CN1032375A

CN1032375A - Concrete fill pipe column and preparation method thereof

Info

Publication number: CN1032375A
Application number: CN88104690A
Authority: CN
Inventors: 盐川英世; 庄川选男; 藤丰; 中村康一; 渡辺泰志; 池田愚一; 下户芳宽; 佐藤孝典
Original assignee: Shimizu Construction Co Ltd
Current assignee: Shimizu Construction Co Ltd
Priority date: 1987-09-18
Filing date: 1988-07-30
Publication date: 1989-04-12
Also published as: EP0308038B1; EP0308038A1; CA1300920C; DE3884117D1; CN1017364B; KR890005360A; KR940009460B1; DE3884117T2

Abstract

The present invention is a concrete filled pipe column, which consists of an outer pipe connected to a frame beam, and the connection transfers axial load from the beam to the outer pipe. The outer pipe is composed of a plurality of pipe fittings connected in series coaxially, the transverse inner dimensions of the pipe fittings are basically equal; there is a concrete core inside the outer pipe; and a tubular member is coaxially assembled in each fitting Inside, to transfer axial loads from the outer tube to the concrete core. The tubular member has constant transverse outer dimensions and has a lower end. The lower end of the tubular member has a first inner peripheral wall that tapers upward, and the transverse inner dimension of the lower end of the tubular member is equal to the transverse inner dimension of each tubular member.

Description

Concrete fill pipe column and preparation method thereof

The present invention relates to a kind of concrete fill pipe column, and the preparation method when using it for a part (for example pillar stake) that constitutes building frame.

Fig. 1 is to Figure 3 shows that an example that constitutes the used concrete fill pipe column of a fabric structure part.One of pillar 20 usefulness at inner filling concrete make with the steel outer tube 22 that forms concrete core 24.Outer tube 22 is made up of multistage main body pipe 26 and multistage tube connector 28.Each

section tube connector

28 and 26 mutual coaxial connections of two sections adjacent main body pipes.The crossbeam 30 of fabric structure is welded on the outer wall of each tube connector 28, and axial load is delivered on the outer tube 22 from crossbeam 30.In addition, a pair of in inner flange 32 boxing that vertical direction is arranged in parallel at certain intervals on the inwall of tube connector 28, radially stretch into concrete core 24 inwardly, so that axial load is passed to post core 24 from outer tube 22.In this class pillar, the horizontal banding effect of outer tube 22 has improved the compressive strength of concrete core 24, thereby compares with the concrete post commonly used that does not have outer tube, can reduce the cross section of pillar greatly.

But, when making above-mentioned pillar, the trouble in air gap and caking district can appear easily generating in concrete core 24 because of the existence of inner flange 32.For example, when to upright outer tube 22 concrete perfusions when forming

concrete core

24,32 one-tenth of inner flanges hinder that air upwards flows smoothly and the obstacle of from outer tube 22, overflowing, the concrete that the result pours into forms air-gap 34(at inner flange 32 soffits and sees Fig. 3).Except that above-mentioned example, during the concrete curing that pours into, inner flange 32 has also become the obstacle of concrete sedimentation, the i.e. obstacle that moves downward because of concrete shrinkage.This situation also can cause forming air-gap 34 below inner flange 32.These air-gaps 34 not only hinder inner flange 32 axial load are passed to post core 24 from outer tube 22, and it also reduces the compressive strength of concrete column core 24.In addition, when the concrete grout sedimentation, flow downward more smoothly than the aggregate that is contained in the concrete because of containing therein slurries, aggregate is easily assembled around inner flange 32, and forms caking distinguish 36(and see Fig. 3 concrete core 24 in).This caking district 36 can reduce the compressive strength of concrete core 24 equally.

Generation for fear of air-gap and caking district when the concrete spouting in outer tube 22 arrives the height of some inner flanges 32, promptly stops to inject concrete.After the hardening of concrete to be injected, concrete perfusion makes it reach the height of next inner flange 32 again.Yet a kind of like this process of concrete perfusion has prolonged the Production Time of pillar 20 greatly.

Therefore, an object of the present invention is to provide the concrete fill pipe column that a kind of inside does not have air-gap and caking district.

Another object of the present invention provides a kind of concrete fill pipe column, and its part that is connected with the crossbeam of framework does not have the reinforcement of evagination, but has superior mechanical strength.

Another object of the present invention provides a kind of concrete core that can prevent and produces the preparation method of the concrete fill pipe column in air-gap or caking district under the condition that does not prolong Production Time.

Another object of the present invention provides a kind of preparation method that can keep the concrete fill pipe column of pillar compressive strength reliably.

Another object of the present invention provides a kind of precast construction pipe that is used for the concrete fill pipe column, and it can prevent concrete core band air-gap and caking district.

According to these and other goal of the invention, one aspect of the present invention is to be devoted to provide a kind of like this concrete fill pipe column, its ingredient comprises: be connected with truck transom, so that axial load is passed over the outer tube that puts on itself from crossbeam, outer tube is made up of the pipe fitting of a plurality of coaxial serial connections, and the horizontal inside dimension of each pipe fitting is equal substantially; Wrap in the concrete column core in the outer tube; And being arranged on the interior tubular piece of each pipe fitting coaxially, the latter is used for giving concrete core with load transfer from outer tube.Tubular piece has constant horizontal outside dimension and a bottom.The bottom of tubular piece has the internal perisporium face of first convergent that makes progress, and the horizontal inside dimension of tubular piece lower end equates with the horizontal inside dimension of each pipe fitting.When concrete was fed into outer tube, the air that the internal perisporium face of the convergent that should make progress is made way under it successfully rose along its surface, thereby prevents to form below tubular piece air-gap.Equally, during the concrete curing that pours into, the internal perisporium face of this convergent makes concrete can be unobstructedly move and directly enter zone below the tubular piece along it.Its consequence is that the generation in air-gap and caking district is all prevented.

Tubular piece can comprise along periphery and is attached to layer of concrete on each pipe fitting inner surface in radially inwardly first inner flange and the annular on each pipe fitting inner wall.Layer of concrete has one first tubular segments, i.e. the lower end section of tubular piece, it be in first inner flange below, contact with the whole lower plane of first inner flange.Layer of concrete also has one second tubular segments, it be positioned at first inner flange above, and contact with the whole plane of going up of this first flange.This second tubular segments has the second internal perisporium face of downward convergent, and the horizontal inside dimension of tubular piece upper end equates with the horizontal inside dimension of each pipe fitting.

Tubular piece also can be that steel are made, and forms overall structure with each pipe fitting.

Another aspect of the present invention is conceived to provide a kind of precast construction pipe that is used for the concrete fill pipe column.This precast construction pipe comprises a pipe fitting with first and second end; Be installed in first inner flange that radial inward is protruded on this pipe fitting inner surface, first of this inner flange is nearer than second first end from pipe fitting; And edge circumferentially is attached to the layer of concrete on the pipe fitting inner surface.Layer of concrete comprises first tubular segments concentric with pipe fitting.First tubular segments has one first internal perisporium face.Whole first of one of two relative ends of first tubular segments and first inner flange directly contacts.First internal perisporium of first tubular segments faces the second end convergent of pipe fitting, and the horizontal inside dimension at the first tubular segments other end place equates with the horizontal inside dimension of pipe fitting.

Another aspect of the present invention is to be devoted to a kind of method of making the concrete fill pipe column.Be ready to many prefabricated structural tube earlier, second end is last then, and first end is in following prefabricated structural tube of erect.Concrete spouting is gone in the prefabricated structural tube of setting, make it in pipe, form concrete core.The crossbeam of framework is connected on the precast construction pipe of setting.Then another root precast construction pipe is connected coaxially the precast construction pipe upper end of setting, thereby described another root precast construction pipe is erected on the adjacent structural tube under it.Repeat then above-mentioned from concrete perfusion to each operating procedure that pipeline section is connected.

In the accompanying drawings:

Fig. 1 is one section an axial sectional view of the concrete fill pipe column of routine;

Fig. 2 is along the sectional view of II-II direction among Fig. 1;

Fig. 3 is the axial sectional view of the amplification of conventional concrete fill pipe column among Fig. 1;

Fig. 4 is the elevation according to one section band broken section of concrete fill pipe column of the present invention;

Fig. 5 is the axial sectional view of the amplification of concrete fill pipe column among Fig. 4;

Fig. 6 is the sectional view of the precast construction pipeline section of the concrete fill pipe column in the pie graph 4;

Fig. 7 is the axial sectional view of amplification that is welded with the tube connector of inner flange and supporting member;

Fig. 8 is the axial sectional view of amplification that has the tube connector that is configured in the layer of concrete on its inner surface;

Fig. 9 is one section the axial sectional view that is in the precast construction pipe in the concrete perfusion process;

Figure 10 is the elevation of the band broken section of another embodiment of the present invention;

Figure 11 is one section axial sectional view of amplification of concrete fill pipe column among Figure 10;

Figure 12 is one section axial sectional view of connecting portion between two precast construction pipes;

Figure 13 is the elevation of the partly cut-away of another embodiment of the present invention;

Figure 14 is the axial sectional view of the precast construction pipe that is used to make the concrete fill pipe column among Figure 13;

Figure 15 is the axial sectional view that has the pipe fitting that is coated in the separating layer on its inwall;

Figure 16 is one section axial sectional view of a kind of style of retrofiting of concrete fill pipe column among Figure 13;

Figure 17 is the axial sectional view that is used for constituting the precast construction pipe of Figure 16 concrete fill pipe column;

Figure 18 is one section axial sectional view of another embodiment of the present invention;

Figure 19 is one section axial sectional view of a kind of form of retrofiting of concrete fill pipe column among Figure 18.

Referring to Figure 14 to Figure 19, institute's target digitized representation corresponding part in each view among the figure.Just no longer repeat specification after explaining once to the implication of each label.

Figure 4 shows that according to concrete fill pipe column of the present invention, it is erected on the pedestal 40, form the part of building frame.This pillar has an outer tube 42, has wherein filled concrete, forms concrete-core column 44.Outer tube 42 is made up of the circular steel pipe fitting 46 of a plurality of coaxial serial connections.Each pipe fitting 46 comprise a tube connector 48 with one with the coaxial main body pipe 50 that links to each other in tube connector 48 lower ends.A plurality of H section steel beam supporting members 52 are welded on the outer wall of tube connector 48, stretch from this radial outward, and the crossbeam of tube connector 48 with building frame coupled together.Every H section steel beam supporting mass 52 is formed (see figure 5) by upper flange 56 and lower wing plate 58 and with the web 60 that upper and lower wing plate couples together.In addition, tubular piece 62 is assemblied within the tube connector 48 coaxially, and radially stretches into inwardly in the concrete core 44 so that axial load is delivered on the stem stem 44 from tube connector 48.Tubular piece 62 comprises a pair ofly having that spaced and parallel is arranged and be welded in

inner flange

64 and 66 on tube connector 48 inwalls along periphery in vertical direction, and along the strong concrete layer 68 that circumferentially is arranged on tube connector 48 inwalls.Each

inner flange

64 and 66 is disks of hollow, radially protrudes inwardly from the inwall of tube connector 48 to form annulus.Last inner flange 64 is positioned on the same horizon of supporting member 52 upper flanges 56, and following inner flange 66 then is positioned on the same horizon of supporting member 52 lower wing plates.

Be clearly shown that as Fig. 5 layer of concrete 68 is made up of three tubular segments, promptly first section 70, second sections 72 and the 3rd sections 74.Under the inner flange 66, its upper surface directly contacts with the whole lower plane of first inner flange 66 under being positioned at for first section 70.This internal perisporium of first section 70 71 is convergents upwards, and the internal diameter that makes the section of winning 70 upper ends and the internal diameter of following inner flange 66 are big to equating, and the internal diameter of first section 70 lower end, promptly the internal diameter of the internal diameter of tubular piece 62 lower ends and tube connector 48 is about equally.Angle theta between internal perisporium face 71 and tube connector 48 axis ₁, be preferably between 45 ° to 60 °.Extend for second section 72 between inner flange 64 and the following inner flange 66.This internal diameter of second section 72 roughly equates with the internal diameter of upper and lower flange 64 and 66.Be positioned on the inner flange 64 for the 3rd section 74, its lower surface directly contacts with the whole plane of going up of last inner flange 64.The 3rd section 74 internal perisporium face 75 is downward convergents, make the internal diameter of the 3rd section 74 lower ends and last inner flange 64 internal diameter about equally, and the 3rd section 74 upper end, be the internal diameter of tubular piece 62 upper ends and tube connector 48 internal diameter about equally, the angle theta between internal perisporium face 75 and tube connector 48 axis ₂Be preferably between 45 ° to 60 °.In addition, the compressive strength rate of the strong concrete of formation layer of concrete 68 forms the compressive strength height of concrete-core column 44.

Shown in further, there is a separate layer to be clipped between the inwall of concrete-core column 44 and each pipe fitting 46 as Fig. 5, makes stem stem 44 and each pipe fitting 46 unlikely combining.This separate layer is made with the material of pitch, oil, grease, paraffin wax, vaseline, synthetic resin or paper and so on.The thickness of separate layer 76 is limit a stick-slip motion is provided can for concrete-core column 44.When using pitch, thickness is about 20 to 100 microns.In addition, main body pipe 50 is made up of last pipeline section 78 and lower tube section 80.Last pipeline section 78 and lower tube section coaxially but mutually break away from and arrange so that the axial stress of an annular gap 82 of formation reduces device between upper and lower pipeline section 78 and 80.

Lower tube section

78 and 80 length should make annular gap 82 be in the middle position on each, promptly are on the moment flex point of main body pipe 50.Because separate layer 76 allows each pipe fitting 46 can move axially the axial width w of annular gap 82 with respect to concrete-core column 44 ₁When each pipe fitting 46 is subjected to from axial load that the crossbeam 54 of framework passes over is vicissitudinous.Like this, the axial stress that each pipe fitting 46 is born has been reduced in annular gap 82.The axial stress that concrete core 44 bears than pipe fitting 46 bear much bigger because be applied on each pipe fitting axial load by upper and lower

inner flange

64 and 66 and layer of concrete 68 pass to concrete core 44.Limited the cross directional variations of concrete core yet be in, thereby increased the compressive strength of pillar effectively than the outer tube 42 under the much smaller stress of concrete core 44.

Shown in Fig. 6 to Fig. 9 is the process of construction drawing 4 concrete fill pipe columns.At first, in factory, be ready to many precast construction pipes 84.Figure 6 shows that a prefabricated structural tube 84.The preparation method of structural tube 84 is as follows: be ready to three tube connectors 48 and three main body pipes 50.By shown in Figure 7 H-section steel beam supporting member 52 is welded on the outer wall of every ready tube connector 48 then, upper and lower

inner flange

64 and 66 is welded on the inwall of ready tube connector 48.Subsequently, as shown in Figure 8, on the inwall of every tube connector 48, make layer of concrete 68.The method for making of this layer of concrete 68 is slowly along its rotational tube connector 48, manual simultaneously strong concrete is spread upon on the inwall of tube connector 48, makes first section 70 and the 3rd section 74

internal perisporium face

71 and 75 that forms convergent respectively at layer of concrete 68.Before smearing concrete, can be along on the inwall of tube connector 48 reinforcing bar being set so that can spread concrete.As the method that need not smear, also can be between concrete injecting tube pattern tool and tube connector 48 inwalls, this cartridge type mould is fixed on the inwall of tube connector 48 removably.Also having a kind of alternative method is to use centrifugal casting method.More particularly, can be with the mould 86 of a pair of frustoconical sheets by on the inwall that is fixed on tube connector 48 removably shown in dotted lines in Figure 8.Tube connector 48 is placed on the whirler, and its axis is horizontal basically, and it is rotated at a high speed along axis.Then quantitative in advance strong concrete is injected between two moulds 86.The result is that the concrete in the tube connector 48 is subjected to being spread over two zones between the mould 86 because tube connector 48 rotates the action of centrifugal force that produces.Form layer of concrete.In the centrifugal forming process, can between mould 86 and corresponding inner flange, form a space 88, thereby make inner flange 64 and 66 s' concrete when tube connector 48 rotations, flow into the inboard of moulds 86 by space 88.Except space 88, also can make concrete flow into the inboard of mould 86 by the hole (not illustrating in the drawings) of opening in inner flange 64 and 66.After the layer of concrete on every tube connector 48 inwalls 68 formed, barrier material such as pitch or grease be coated in not to be provided in the every tube connector 48 on the inwall of the position of tubular piece 62.Simultaneously also coat identical barrier material, to form separate layer at the inwall of every main body pipe 50.Later, three tube connectors 48 are welded to the upper end of three main body pipes 50 respectively coaxially, form three bodys 46.In this way three bodys 46 making are connected in series coaxially, form precast construction pipe 84.The mistake of above-mentioned making precast construction pipe 84 beg for school  send joke wick  hold back 8

inner flange

64 and 66 and H type supporting member 52 form after being soldered on the tube connector 48, layer of concrete 68 does not suffer the heating of welding process, thereby prevents that it from sustaining damage.

The precast construction pipe of making is as stated above transported to the building site from factory, earlier a precast construction pipe 84 is erected on the pedestal 40 there, then as shown in Figure 9, concrete is injected in the precast construction pipe 84 of setting to form concrete core 44 with elephant trunk 90.When the top of concrete in the pipe was raised to the internal perisporium face 71 of layer of concrete 68, near the air the internal perisporium face 71 of this convergent successfully upwards flowed along this internal perisporium face 71, thereby the concrete that this internal perisporium face space below 71 all is injected into is full of.In concrete curing process subsequently, concrete shrinks along the

internal perisporium face

71 and 75 of layer of concrete 68 downwards smoothly, shown in arrow A among Fig. 5 and B.Like this, concrete just has been full of the space below the internal perisporium face 71 of adjacent layer of concrete 68 fully.As a result, below the internal perisporium face 71 of layer of concrete 68 and below the

inner flange

64 and 66, can not produce air-gap and caking district, thereby form a concrete core 44 with reliable compressive strength.Behind the concrete curing that pours into, with suitable cutting tool every main body pipe 50 is divided into upper and lower two

section

78 and 80, between them, form annulus 82.Then the crossbeam 54 of building frame is coupled together with the H type supporting member 52 of precast construction pipe 84 respectively.Then another root precast construction pipe 84 is received on the top of having poured into concrete precast construction pipe 84 coaxially.After this, repeat above-mentioned each step, make the concrete fill pipe column from concrete perfusion to connection precast construction pipe by the predetermined number of plies.

Can make the concrete fill pipe column with being less than or replacing above-described precast construction pipe 84 more than the precast construction pipe of three pipe fittings 46.In addition, can make another first concrete segment 70 and another the 3rd concrete segment 74 under the last inner flange 64 He on the following inner flange 66 respectively, so that replace second section 72 of layer of concrete 68.In addition, the concrete tube body of also can application of carbon fibres reinforcing replaces main body pipe 50.This body is made up of hollow cylindrical cement matrix and high-strength carbon fiber.Carbon fiber twine to form with the coaxial circle shape of cement matrix and imbeds cement matrix.The method of making this body is the carbon fiber circle to be immersed in to make carbon fiber circle formation drum in the cement paste of cement powder diameter less than the carbon fiber diameter.The concrete main pipe's of this carbon fiber reinforcement young's modulus of elasticity equates substantially with the young's modulus of elasticity of concrete core 44, thereby concrete core 44 is played effective banding effect, even neither establish separate layer 76 thereon, effective too when also not reducing the circumferential weld 82 of little stress.

Figure 10 and 11 is depicted as an alternative embodiment of the invention.Each pipe fitting 92 leaves layout mutually in this structure, forms annulus 82 between per two adjacent pipe fittings 92.Each pipe fitting has a tubular piece to embed the upper end of pipe fitting 92.As Figure 11 clearly shown in, this tubular piece is made up of following part: inner flange 66 that is welded in pipeline section 92 upper ends and one are positioned at the layer of concrete 70 below the inner flange 66.Separate layer 76 is clipped between that part of inwall that concrete core 44 and each pipe fitting 92 do not cover by tubular piece 94.Be welded with several supporting members 52 of being connected with building crossbeam 54 of being used on the outer wall of each pipe fitting 92.Be provided with between the pipe fitting 92 that each pipe fitting 92 is adjacent one be basically the annular separator 96 so that annulus 82 is closed.These separator 96 usefulness elastomeric materials are made, for example rubber or synthetic resin.For example epoxy resin or similar substance stick to separator 96 lower end of each pipe fitting 92 with cementing agent, this concrete fill pipe column is made of several precast construction pipes, every precast construction pipe comprises pipe fitting 92, tubular piece 94, supporting member 52, separate layer 76 and separator 96, and these members are all made in factory.Then the precast construction pipe is transported to the building site, carry out coaxial connection by the described method of a last embodiment.When a precast construction pipe being connected to the prefabricated pipe upper end of concrete perfusion, can inserting the girth member 98(that is cylinder frame shape in the bonding pad of two prefabricated pipe and see Figure 12) thus the mechanical strength of connecting portion is improved.More particularly, as shown in figure 12, in the concrete core 44 that the Lower Half of girth member 98 forms from a following prefabricated pipe 100, the first half of girth member 98 is stretched from the upper end of a following prefabricated pipe like this, then top prefabricated pipe 102 coaxially on the frame prefabricated pipe 100 below, thereby make the first half of girth member 98 prefabricated pipe 102 above inserting.Concrete perfusions in the prefabricated pipe 102 that can be upward after connecting.

Figure 13 shows that another embodiment of the present invention.Its pipe fitting 104 is by several tubes unit 106 coaxial composing in series.Every unit of pipe 106 is made up of tube connector 48 and the coaxial main body steel pipe 108 that is welded in tube connector 48 lower ends.Tube connector 48 has a plurality of H type supporting members 52 and upper and lower inner flange 64 and 66.The crossbeam 54 of building frame is connected with tube connector by H-type supporting member.Main body pipe 108 has the stress of being made up of several cannelures 118 that forms and reduces device on its outer wall.The number of cannelure 118 and axial width w thereof ₂To determine according to the design condition of pillar with radial depth.On the inwall of entire body pipe 108, and on the remainder inwall of the tube connector 48 except that upper and lower inner flange 64 and 66 s' inner wall section, scribble separate layer 76.Each pipe fitting 104 also has a layer of concrete 110.This layer of concrete 110 comprises all two drum-shaped sections coaxial with pipe fitting 104, promptly first section and second section 112,114.Be positioned at for first section 112 below the following inner flange of nethermost unit of pipe 106, this upper end of first section 112 contacts with the whole lower plane of first inner flange 66 of nethermost unit of pipe 106.This first section 112 has a upwards internal perisporium face 71 of convergent.Second section following inner flange 66 from nethermost unit of pipe 106 extends to the last inner flange 64 of uppermost unit of pipe 106.This internal diameter of second section 114 equates with internal diameter last, that carry out

numerous ɡ

4,66 haply.The upper end of the tube connector 48 of uppermost unit of pipe 106, and the inside, the bottom of nethermost unit of pipe is provided with layer of concrete 110.

Figure 14 and 15 is depicted as the manufacturing process of concrete fill pipe column shown in Figure 13.At first, in factory, be ready to many precast construction pipes 120.Such precast construction pipe 120 is shown among Figure 14, and its production routine is as follows: be ready to many tube connectors 48 and Duo Gen main body unit of pipe 108.H-type supporting member 52 is welded on the outer wall of every ready tube connector 48, more upper and lower

inner flange

64,66 is welded on the inwall of every ready tube connector 48.Go out cannelure 118 in the turning of the middle part of every ready main body unit of pipe 108.Coat barrier material to form separate layer 76 at the inwall of every tube connector 48 and every main body unit of pipe 108.Subsequently by the upper end that each root tube connector 48 is welded on coaxially each root main body unit of pipe 108 respectively shown in Figure 15 to form unit of pipe 106.Then the unit of pipe of making by described process 106 is contacted coaxially and weld to form pipe fitting 104.Be that the pipeline section of making is coated layer of concrete 110 then with centrifugal casting.More particularly, frustoconical sheets hollow mould 86 is pressed the mode shown in the dotted line among Figure 14, be fixed on removably on the inwall of nethermost unit of pipe 106, pipe fitting 104 is placed on the slewing it is rotated at a high speed around its axis.Then the strong concrete that will measure in advance is added in the zone between the upper flange of mould 86 and uppermost unit of pipe 106.The result places the concrete of pipeline section 104 to form layer of concrete shown in Figure 14 110.In said process and since layer of concrete 110

inner flange

64 and 66 and H-type supporting member 52 weld after formation, layer of concrete 110 does not suffer the heating of welding process, thereby prevents that layer of concrete 110 from sustaining damage.

The precast construction pipe made as stated above 120 is transported to the building site from factory, couple together coaxially one by one by method described in first embodiment there.In the present embodiment, because the upper and lower

inner flange

64 and 66 between the lower flange 66 of the upper flange 64 of uppermost unit of pipe 106 and nethermost unit of pipe 106 all is embedded in the layer of concrete 110, below all following inner flanges 66, needn't make the internal perisporium 71 of convergent.So, to compare with precast construction pipe 84, the manufacturing efficient of precast construction pipe 120 has improved.Also have, because layer of concrete 110 is neither in the upper end of the tube connector 48 of uppermost unit of pipe 106, not in the bottom of nethermost unit of pipe, layer of concrete 110 can not be subjected to the influence of the heat that produces when precast construction pipe 120 welded yet.

On inner flange 64 on the uppermost unit of pipe 106, the 3rd section of layer of concrete can be set, the 3rd section lower end directly contacts with the whole plane of going up of the last inner flange 64 of uppermost unit of pipe 106, and makes the 3rd section to have an internal perisporium face 75 of convergent down.

Shown in Figure 16 is a kind of remodeling form of the concrete fill pipe column among Figure 13.In this pattern, every main body unit of pipe 122 usefulness carbon fiber reinforced concrete above-mentioned is made.The upper and lower end section 124 of every main body unit of pipe 122 and 126 external diameter are littler than the external diameter in main body pipe stage casing.The upper end section 124 of main body unit of pipe 122 is inserted in the adjacent with it thereon tube connector 48 coaxially, and its lower end section 126 then is inserted in its adjacent with it down tube connector 48 coaxially.A coaxial connection of lower end that has cylindrical shape connector 128 with the main body unit of pipe 122 in bottom of each pipe fitting 130 of inner flange 66, and on the uppermost tube connector 48 of the pipe fitting 130 that its lower end welding is adjacent with it in its lower section.Pipe fitting 130 uppermost tube connectors 48 and connector 128 tighten up them mutually around the axially extended bracing piece of doing of distributing of the axis isogonisms of pipe fitting 130 132 by many, so just with other tube connectors 48 between uppermost tube connector 48 and connector 128 and other main body unit of pipe 122 overlappings tighten together.There is screw the upper and lower end of every bracing piece all turning, and passes all

inner flanges

64 and 66 of pipe fitting 130.The threaded upper end of every bracing piece 132 upwards passes from the hole of the last inner flange 64 of uppermost tube connector 48, is fixed on by nut 134 on the last plane of inner flange 64.On the other hand, the threaded bottom of every bracing piece 132 passes downwards from the hole of the inner flange 66 of connector 128, is fixed on by nut 136 on the lower plane of inner flange 66.First section 112 of layer of concrete 110 is positioned under the inner flange 66 of connector 128, second section 114 of layer of concrete 110 then the inner flange 66 of connector 128 and topmost a tube connector 48 between the inner flange 64.Separate layer neither is set on each root pipe fitting 130 does not also reduce the groove of little stress.Make such concrete fill pipe column, in factory, make many precast construction pipe 138(earlier and see Figure 17).The method of the preparation method of every precast construction pipe 138 and making precast construction pipe 120 is that tube connector 48 and main body unit of pipe 122 replace stacked then being connected and fixed with connector 128 and bracing piece 132 much at one.Layer of concrete 110 is made the method formation of back with centrifugal forming at whole pipe fitting 130.After precast construction pipe 138 was made, bracing piece 132 and nut 134 and 136 all be embedded in the layer of concrete 110.

An alternative embodiment of the invention as shown in figure 18.Each pipe fitting 140 is made up of steel tube connector 142 and the main body pipe 50 that is welded in tube connector 142 lower ends coaxially.One tubular piece that forms one is with it arranged in the tube connector 142, and promptly tube connector 142 has the

internal perisporium face

71 and 75 of the first and second convergent shapes respectively at its upper and lower end.Therefore the internal diameter of the upper and lower end of tube connector 142 equates that with the internal diameter of main body pipe 50 internal diameter of tube connector 142 middle parts is then much smaller than the internal diameter of main body pipe 50.Every tube connector 142 all is welded with several supporting members 52, and has all coated separate layer 76 on the total inner surface of every main body pipe 50.Needn't say that stress reduces groove 82 and opens middle part at every main body pipe 50.Make tube connector 142 with for example centrifugal casting, so its inwall is coarse.The length of every tube connector 142 is than the height H of each supporting member 52 ₁Vertical length L with each convergent shape internal perisporium face ₂Summation long.Behind the precast construction pipe for preparing many tube connectors that alternately are serially connected 142 that include predetermined radical and main body pipe 50, they are transported to the building site, connect together one by one by the method identical with pillar preparation method shown in Figure 4.In this concrete fill pipe column, can prevent the generation in air-gap and caking district equally, to compare with a last embodiment, the mechanical strength of every tube connector 142 is by height.

For strengthening the tensile strength of the short-time load that the pillar opposing for example causes by reasons such as earthquakes, can be by the stiffener 144 that in concrete core 44, adds an axial arranged shape misconduct shown in Figure 19.

Although the cross section of each pipe is circular in the embodiment previously described, also can replace the circular section with polygonal cross section. Also have, can replace strong concrete with the concrete identical with consisting of concrete core 44 and make concrete layer. In addition, except slit 82 and groove 118, also can use the small through hole that many rows pass tube wall. Small through hole so in a row is that the axis around pipeline section is periphery on pipe, and two adjacent apertures in contiguous two rounds are staggeredly arranged mutually

Claims

1. A concrete filled column forming part of the framework of a building, the concrete filled column being characterized by:

The outer tube connected to the frame beam, which transfers the axial load from the beam and applies it to the outer tube. The outer tube is composed of a plurality of tubes connected in series coaxially and with practically equal transverse inner dimensions ;

a concrete core located within the outer tube; and

A tubular member coaxially mounted within each pipe to transmit axial loads from the outer pipe to the concrete core, the tubular member having constant transverse outer dimensions and a lower end section with an upward taper The first inner peripheral wall surface, the transverse inner dimension of the lower end section of each tubular member is equal to the transverse inner dimension of each tubular member.

2. A concrete filled pipe string according to claim 1, characterized in that each pipe has an inner wall, and the tubular member on the inner wall is composed of: a radially inwardly fixed first radially inwardly attached to the inner wall of each pipe along the periphery; an inner flange, the first inner flange having an upper plane and a lower plane; a layer of concrete peripherally attached to the inner wall of each pipe, the concrete layer comprising a first tubular section positioned below the first inner flange, It is arranged in such a way that the first tubular section is in direct contact with the entire lower plane of the first inner flange, the lower end section of which consists of the first tubular section of the concrete layer.

3. A concrete filled pipe string according to claim 2, wherein each pipe member is divided into upper and lower parts, and the tubular member is contained in the upper part of each pipe member.

4. A concrete filled pipe string according to claim 3, further comprising: a spacer layer sandwiched between the concrete core and the inner wall of each pipe for separating the concrete core from the inner wall of each pipe , so that each tube is not combined with the stem; the axial stress reducing device, which is located on the outer tube, includes an annular gap around the entire outer tube along the periphery to reduce the axial load applied to the outer tube When the axial stress is generated in the outer tube, each tube is made of steel, and its lower part is connected with the beam of the frame.

5. The concrete filled pipe string according to claim 4, characterized in that the pipes are stacked away from each other in the axial direction, thereby forming annular gaps with a certain axial width between the pipes, and the stress reducing means consists of these annular gaps The annular gap changes its width when the outer tube is subjected to axial load, thereby reducing the axial stress in the outer tube.

6. The concrete filled pipe column according to claim 3, characterized in that the upper part of each pipe is composed of a steel connecting pipe, the connecting pipe has a lower end and is connected with the beam of the frame, and the lower part of each pipe is composed of a coaxial It consists of a main pipe connected to the lower end of the connecting pipe.

7. A concrete filled pipe string according to claim 6, wherein said concrete layer further comprises a second tubular section located above the first inner flange, said tubular section positioned so as to be in contact with The entire upper plane of the first inner flange is in direct contact with, the second tubular section has a second inner peripheral wall that tapers downward, and the transverse inner dimension of the upper end of the tubular member is equal to the transverse inner dimension of each pipe member.

8. The concrete filling pipe column according to claim 6, characterized in that the connecting pipe has several supports made of H-shaped steel, which protrude radially outward from the outer wall of the connecting pipe, and the connecting pipe passes through these supports The member is connected to the beam of the frame, and the support member is composed of upper and lower flanges and webs connected with the upper and lower flanges; the tubular member also includes a fixed flange along the periphery at a position equal to the height of the upper flange of the support member. The second inner flange protruding radially inward on the inner wall of the connecting pipe; its first inner flange is fixed on the inner wall of the connecting pipe whose height is equivalent to the position of the lower flange of the support; its concrete layer is also included in the first and A second tubular section between the second inner flanges, the second tubular section having a transverse inner dimension no larger than the transverse inner dimensions of the first and second inner flanges.

9. The concrete filled pipe column according to claim 8, characterized in that the second inner flange has upper and lower planes; the concrete layer also includes a third tubular section located on the second inner flange, the third The tubular section is in direct contact with the entire upper plane of the second inner flange, the third tubular section has a downwardly tapered inner peripheral wall, and the transverse inner dimension of the upper end of the tubular element is equal to the transverse inner dimension of each tubular element .

10. A concrete filled pipe string according to claim 6, 7, 8 or 9, characterized in that the main pipe is made of carbon fiber reinforced concrete.

11. A concrete filled pipe column according to claim 6, 7, 8 or 9, characterized in that it further comprises: a spacer layer sandwiched between the concrete core and the inner wall of each pipe to separate the concrete core from the The inner wall of each pipe is separated so that each pipe is not bonded to the concrete core; the axial stress reducing device, which is located on the outer pipe, includes an annular gap around the entire outer pipe along the periphery to reduce the axial stress. The axial stress generated in the outer pipe when the load is applied to the outer pipe; wherein the main pipe of the concrete filled pipe string is made of steel.

12. The concrete filled pipe column according to claim 2, characterized in that each of its pipe fittings is composed of a plurality of coaxial series pipe units, and each pipe unit is connected with the beam of the frame; its first internal method The flange is fixed on the inner wall of the lowermost pipe unit; the tubular member also includes a second inner flange that protrudes radially inward and is fixed along the periphery on the inner wall of each pipe unit except the lowermost pipe unit; The concrete layer also includes a second tubular section from the first inner flange to the second inner flange of the uppermost pipe unit, and the transverse inner dimension of the second tubular section is not larger than that of the first and second inner flanges. The horizontal inner dimension of is large.

13. The concrete filled pipe string according to claim 12, characterized in that the second inner flange has upper and lower planes; and the concrete layer further includes a third pipe located on the second inner flange of the uppermost pipe unit. The tubular section is in direct contact with the entire upper plane of the second inner flange, the third tubular section has a second inner peripheral wall that tapers downward, and the transverse inner dimension of the upper end of the tubular piece is the same as that of each tubular piece The horizontal inner dimensions are equal.

14. A concrete filled pipe string according to claim 13, characterized in that the uppermost pipe unit has an upper end; the lowermost pipe unit has a lower end; In the part other than the upper and lower ends of the pipe units below.

15. A concrete filled pipe string according to claim 12, 13 or 14, characterized in that it further comprises a spacer and axial stress reducing means, the spacer being sandwiched between the concrete layer and the inner wall of each pipe and the concrete Between the core and the inner wall of each pipe, it is used to isolate the inner surface of each pipe from the concrete layer or concrete core, so that each pipe will not be integrated with the concrete layer or concrete core; the axial stress reducing device is located On the outer pipe, there is an annular part surrounding the entire outer pipe along the periphery to reduce the axial stress generated in the outer pipe when the axial load acts on the outer pipe; wherein the pipe unit of the concrete filled pipe string is used Made of steel.

16. The concrete filling pipe column according to claim 1, wherein each pipe fitting is composed of: a connecting pipe made of steel and having a lower end; a main pipe unit coaxially connected to the lower end of the connecting pipe; its The tubular member is made of steel and integrated with the connecting pipe.

17. The concrete filled pipe column according to claim 16, wherein the tubular member has an upper end portion, and the upper end portion has a second inner peripheral wall that tapers downward, and the transverse inner dimension of the upper end of the tubular member is the same as The lateral inner dimensions of the first pipe are equal.

18. A concrete packed pipe string according to claim 16 or 17, characterized in that the main pipe is made of carbon fiber reinforced concrete.

19. A concrete filled pipe string according to claim 16 or 17, characterized in that it further comprises a separation layer and axial stress reducing means, the separation layer is sandwiched between the concrete core and the inner wall of the main pipe to make the concrete The core is spaced from the inner wall of the main pipe so that the main pipe will not be combined with the concrete core; the axial stress reducing device is located on the outer pipe, which includes an annular portion surrounding the entire outer pipe along the periphery to reduce the Axial stress generated in the outer tube when an axial load is applied to the outer tube; wherein said main tube is made of steel.

20. A prefabricated structural tube used as a column part of a building frame, the characteristics of which include:

A pipe fitting having an inner wall and first and second ends;

a first inner flange fixed to the inner wall of the pipe fitting and projecting radially inwardly, the first inner flange has first and second planes, the first plane being closer to the first end of the pipe fitting than the second plane;

A concrete layer attached to the inner wall of the pipe fitting along the periphery, the concrete layer includes a first tubular section coaxial with the pipe fitting, the tubular section has opposite ends and a first inner peripheral wall surface, and the two opposite ends of the first tubular section One of the ends is in direct contact with the entire first plane of the first inner flange, the first inner peripheral wall of the first tubular section tapers toward the second end of the tubular section, and the transverse inner dimension of the other end of the first tubular section Equal to the transverse internal dimension of the fitting.

21. A prefabricated structural pipe according to claim 20, characterized in that the first inner flange and the concrete layer are located in the second end region of the pipe member.

22. A prefabricated structural pipe according to claim 21, characterized in that the second end of the pipe member is formed by connecting steel pipes with support members, each supporting member extending radially outward from the outer wall of the connecting pipe, and the remainder of the pipe member being formed by Consists of a steel main tube coaxially connected to a connecting tube.

23. The prefabricated structural tube according to claim 22, wherein the concrete layer further comprises a second tubular section coaxial with the tubular member, the second tubular section has opposite ends and a second inner peripheral wall surface, the second tubular section One of the opposite ends of the shape section is in direct contact with the entire second plane of the first inner flange, the second inner peripheral wall of the second pipe shape section tapers toward the first end of the pipe section, and the other end of the second pipe shape section The transverse internal dimension is equal to the transverse internal dimension of the fitting.

24. The prefabricated structural pipe according to claim 22, characterized in that it also includes a second inner flange fixed on the inner surface of the connecting pipe and protruding radially inward, the second inner flange is farther from the second end of the pipe than the first Close to the inner flange, the second inner flange has first and second planes, the first plane of the second inner flange faces the second plane of the first inner flange; its support is made of H-shaped steel, with The first and second flanges, the first flange is at the same height as the first inner flange, and the second flange is at the same height as the second inner flange; its concrete layer also includes coaxial with the pipe fittings, As for the second tubular section between the first inner flange and the second inner flange, the lateral inner dimension of the second tubular section is not larger than the transverse inner dimensions of the first and second inner flanges.

25. The prefabricated structural tube according to claim 24, wherein the concrete layer further comprises a third tubular section coaxial with the tubular member, the third tubular section has opposite ends and a second inner peripheral wall surface, the third tubular section One of the opposite ends of the shaped section is in direct contact with the entire second plane of the second inner flange, the second inner peripheral wall of the third tubular section tapers toward the first end of the tubular section, and the other end of the third tubular section The transverse inner dimension of the pipe is equal to the transverse inner dimension of the pipe fitting.

26. A prefabricated structural pipe according to claim 21, 22, 23, 24 or 25, characterized in that it further comprises a separation layer coated on the inner wall of the main pipe, the separation layer separates the inner wall of the main pipe from the concrete poured into the pipe, thereby Keep the main pipe from being bonded to the concrete.

27. A prefabricated structural tube according to claim 26, characterized in that it further comprises stress reducing means, which is located on the outer tube and comprises an annular portion circumferentially surrounding the entire tube, for reducing the stress when axial loads are applied to the tube. The axial stress that develops in the fitting when the fitting is put on.

28. The prefabricated structural pipe according to claim 20, wherein the pipe is composed of a plurality of pipe units connected in series coaxially, and each pipe unit has a support member protruding radially outward from the outer wall of the pipe; the first internal method The flange is fixed on the inner wall of the pipe unit at the first end of the pipe fitting; wherein each pipe unit except the pipe unit at the first end of the pipe fitting has a second inner flange protruding radially inwardly fixed on the inner wall of the pipe unit along the periphery; The concrete layer also includes a second tubular section coaxial with the pipe between the second inner flange extending from the first inner flange to the second inner flange of the pipe unit at the second end of the pipe, the transverse inner portion of the second tubular section The dimension is not larger than the lateral inner dimensions of the first and second inner flanges.

29. A prefabricated structural pipe according to claim 28, wherein the second inner flange has first and second planes, the first plane being closer to the first end of the pipe than the second; A coaxial third tubular section, the third tubular section has opposite ends and a second inner peripheral wall surface, one of the opposite ends of the third tubular section is connected to the entire second inner flange at the second end of the pipe fitting The two planes are in direct contact, the second inner peripheral wall of the third tubular section tapers toward the first end of the pipe, and the transverse inner dimension of the other end of the third tubular section is equal to the transverse inner dimension of the pipe.

30. A prefabricated structural tube according to claim 29, wherein the tube unit at the first end of the tube and the tube unit at the second end of the tube have respective free ends; within the range outside the free end of the tube unit at the second end.

31. The prefabricated structural pipe according to claim 28, 29 or 30, characterized in that it also includes a separation layer, the separation layer is arranged on the part of the inner wall of the pipe fitting where the inner flange is not installed, and the separation layer isolates the inner wall of the pipe fitting from the concrete layer so that the concrete layer is not bonded to the pipe; it also includes stress-reducing means, which are located on the pipe and include an annular portion surrounding the pipe peripherally to reduce the stress when axial loads are applied to the pipe. Axial stresses developed within the fitting.

32. The prefabricated structural pipe according to claim 28, 29 or 30, characterized in that each pipe unit consists of: a steel connecting pipe; a main pipe unit made of carbon fiber reinforced concrete and coaxially connected with the connecting pipe, Both the support and the inner flange are welded on the connecting pipes of each pipe unit.

33. A method of making a concrete filled column forming part of a building framework, the method of making being characterized by the steps of:

(a) Prepare a plurality of prefabricated structural pipes, each prefabricated structural pipe includes: a pipe fitting with an inner wall and first and second ends; an inner flange fixed on the inner wall of the pipe fitting and protruding radially inward, the first the inner flange has first and second planes, the first plane being closer to the first end of the fitting than the second plane; a layer of concrete peripherally attached to the inner wall of the fitting, the concrete layer comprising a first pipe coaxial with the fitting The first tubular section has two opposite ends and a first inner peripheral wall, one of the opposite ends of the first tubular section is in direct contact with the entire first plane of the first inner flange, and the first tubular section The first inner peripheral wall of the section tapers toward the second end of the pipe, and the other end of the first tubular section has a transverse inner dimension equal to the transverse inner dimension of the pipe;

(b) erecting a prepared prefabricated structural pipe with the second end of the pipe section facing upwards and the first end facing downwards;

(c) pouring concrete into erected prefabricated structural tubes so that a concrete core is formed within the structural tubes;

(d) connecting the beams of the frame to the erected prefabricated structural tubes;

(e) Coaxially connect another prefabricated structural tube to the upper end of the vertical prefabricated structural tube, so that the other structural tube is erected on the lower adjacent structural tube;

(f) After completing steps (c) to (e), repeat steps (c) to (f).

34. The method of claim 33 wherein step (a) comprises the steps of:

(g) preparation of fittings;

(h) fixing the first inner flange to the inner wall of the fitting;

(i) attaching the support to the pipe so that the support projects radially outwardly from the outer wall of the pipe;

(j) after completing steps (h) to (i), making a concrete layer on the inner wall of the fitting;

Wherein step (d) includes the following steps:

(k) Connect the beams of the frame to the supports.

35. The method of claim 34 wherein step (g) comprises the steps of:

(l) Prepare connecting pipes made of steel;

(m) prepare the main tube; and

(n) Connect the connecting pipe coaxially to the main pipe to form a pipe fitting, wherein step (n) includes the following steps:

(o) welding the first inner flange to the inner wall of the connecting pipe; wherein step (i) includes the following steps;

(p) Weld the support to the outer wall of the connecting pipe.

36. The method of claim 35 wherein step (j) comprises the step of:

(q) forming a second tubular section of formed concrete layer, the second tubular section being coaxial with the pipe member, having opposite ends and a second inner peripheral wall surface, one of the opposite ends of the second tubular section In direct contact with the entire second plane of the first inner flange, the second inner peripheral wall of the second tubular section tapers toward the first end of the tubular section, and the transverse inner dimension of the other end of the second tubular section is the same as the transverse direction of the pipe fitting The inner dimensions are equal.

37. The method of claim 34 wherein step (g) comprises the steps of:

(r) preparation of multiple steel tubular units;

(s) Connect the pipe units coaxially in series to form pipe fittings; wherein step (h) includes the steps of:

(t) welding the first inner flange to the inner wall of the pipe unit at the first end of the pipe fitting, wherein step (a) further includes the steps of:

(u) Before proceeding to step (j), weld the second inner flange to the inner wall of each pipe unit except the pipe unit at the first end of the fitting so that the second flange is projecting inwardly, wherein step (i) comprises the steps of:

(v) welding the support to the outer wall of each tubular unit, wherein step (j) comprises the steps of:

(w) after completion of step (s), making a second tubular section of concrete layer coaxial with the fitting, extending from the first flange welded to the fitting and from the flange welded to the second end of the fitting. Over the entire length between the second flanges, the transverse inner dimension of the second tubular section is no greater than the transverse inner dimension of the first and second inner flanges.

38. A method according to claim 34 or 35, characterized in that step (j) comprises the steps of:

(x) rotate the pipe about its own axis; and

(y) The concrete is injected into the pipe so that the concrete is subjected to the centrifugal force generated by the rotation of the pipe to form a concrete layer spread on the inner wall of the pipe.