CN116837899A - Construction method for formwork support in narrow space - Google Patents
Construction method for formwork support in narrow space Download PDFInfo
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- CN116837899A CN116837899A CN202311118282.0A CN202311118282A CN116837899A CN 116837899 A CN116837899 A CN 116837899A CN 202311118282 A CN202311118282 A CN 202311118282A CN 116837899 A CN116837899 A CN 116837899A
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- 238000010276 construction Methods 0.000 title claims abstract description 51
- 238000009415 formwork Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 239000004568 cement Substances 0.000 claims description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 230000007306 turnover Effects 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a construction method of a formwork support in a narrow space, which comprises stirring piles arranged around a basement, enclosure walls arranged inside the stirring piles, basement outer walls arranged inside the enclosure walls, opposite supporting steel pipes vertically arranged between the basement outer walls and the enclosure walls at intervals, and a supporting system arranged between supporting plate strips; the invention is beneficial to ensuring the installation foundation of the template system by arranging the support changing bracket, does not occupy the bottom space and is beneficial to bottom construction; the support replacing bracket is easy to install and convenient to turnover; the support changing and adjusting assembly is beneficial to ensuring the adaptation to the installation of different support template assemblies and carrying out local fine adjustment; through the joint installation of single scaffold body and symmetrical steel pipe, do benefit to and guarantee that the workman walks in the narrow and small space, provide construction operation condition for the outer wall reinforcement, do benefit to simultaneously and guarantee the protection of propping of both sides wall body.
Description
Technical Field
The invention belongs to the technical field of formwork support, and particularly relates to a construction method of formwork support in a narrow space.
Background
When the basement is constructed, a support changing plate belt is required to be arranged between the outer wall of the basement and the enclosure structure, and the formwork is usually supported by supporting a scaffold formwork. However, when the distance between the outer wall of the basement and the enclosure structure is smaller than 1m, the steel pipe is used as a supporting system when the formwork of the support changing plate and strip is erected, the steel pipe is required to be arranged on a bottom plate or other foundations, and the situation that a worker cannot walk on the outer side of the outer wall and the construction operation condition is affected exists. And the steel pipe support is adopted, so that the material consumption is large in demolishing operation, and the material turnover condition is not facilitated. How to meet the operation demands of constructors on the premise of meeting the safety performance of a supporting system is a great difficulty.
Disclosure of Invention
The invention provides a construction method for formwork support in a narrow space, which is used for solving the technical problems of formwork support in the narrow space, saving support space, adaptability adjustment, convenience in turnover and the like.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the construction method of the formwork support in the narrow space comprises the steps of arranging stirring piles around a basement, arranging enclosure walls inside the stirring piles, arranging basement outer walls inside the enclosure walls, vertically arranging opposite supporting steel pipes at intervals between the basement outer walls and the enclosure walls, and arranging supporting systems between supporting plate strips; wherein the horizontal distance between the enclosure wall and the basement outer wall is less than 1 meter;
the support system comprises a scaffold body, a scaffold support connected to the bottom of the scaffold body, a support changing bracket arranged on the enclosure wall, a support template component connected to the top of the support changing bracket and a support changing adjusting component connected between the support changing bracket and the support template component;
the support replacing bracket comprises a support replacing cross rod, a support replacing vertical rod which is connected with the support replacing cross rod and detachably connected with the enclosure wall, and a support replacing diagonal rod which is connected between the support replacing cross rod and the support replacing vertical rod;
the support changing and adjusting assembly comprises a support changing and adjusting upright post, a support changing and adjusting inclined support connected to the top of the support changing and adjusting upright post, a support changing and adjusting jacking connected to the top of the support changing and adjusting inclined support, a support changing and adjusting horizontal piece connected to the top of the support changing and adjusting jacking, a support changing and adjusting sleeve connected to the periphery of the support changing and adjusting upright post and connected to a support changing cross rod, and a support changing and adjusting hoop connected to the support changing and adjusting upright post and sleeved on the top of the support changing and adjusting sleeve;
the construction method for supporting the template in the narrow space comprises the following specific steps:
firstly, constructing a stirring pile, then constructing a retaining wall, and constructing a basement in a formed foundation pit; when the basement is constructed, an inner support is arranged inside the outer wall of the basement, and the inner support is sequentially arranged in multiple ways in the vertical direction according to construction procedures;
step two, pile edge enclosures are arranged on the outer sides of the basement outer walls corresponding to the floor slabs and the inner supports of the basement outer walls, and support exchanging plate belts are arranged on the outer sides of the basement outer walls corresponding to the floor slabs of the basement;
step three, drilling holes in the wall body constructed by the enclosure wall during construction, and fixing the support changing vertical rods of the support changing bracket by adopting expansion bolts; then installing a support template assembly on the top of the support replacing cross rod; wherein, a support changing adjusting component is arranged between the support changing cross rod and the support template component;
step four, adjusting the heights of the support changing and jacking and the support changing and leveling piece through a support changing and leveling upright post and a support changing and leveling hoop in the support changing and leveling assembly, so that the design height of the support template assembly is adapted;
step five, during construction, the scaffold frame body and the scaffold support are arranged on a pile edge enclosure or a support changing plate band which is completed in construction, the scaffold frame body is vertically and detachably connected with a support steel pipe, and two ends of the support steel pipe are connected between the enclosure wall and the basement outer wall;
and step six, the lower part of the inner support is removed after each layer of pouring is performed until the pouring of the integral structure is completed, and a replacement support, a replacement support adjusting assembly and a support template assembly are sequentially arranged according to the construction progress of each layer of the inner support and used for pouring construction of the replacement support plate strip until the integral construction is completed.
Further, the stirring piles are cement stirring piles, the cement stirring piles are arranged in groups and are surrounded to form a foundation pit arrangement pattern, and adjacent cement stirring piles are connected in a meshed mode; the enclosure wall is a group of bored piles, and the bored piles are arranged at equal intervals.
Further, the inner support is arranged along with the construction of the basement outer wall, and is a concrete support; and the inner support is removed from bottom to top in sequence, and the removal time is close to the completion of the whole pouring maintenance of the bottom plate or the floor slab below.
Furthermore, the pile edge enclosures are respectively arranged at the same height with the corresponding bottom plate and each inner support, and the pile edge enclosures are formed by casting plain concrete.
Furthermore, a support changing and adjusting sleeve is pre-installed on the support changing cross rod, and the support changing cross rod and the support changing diagonal rod are manufactured through angle steel; and at least two rows of expansion bolts are arranged on the support changing vertical rods, and the support changing vertical rods are arranged below each designed support changing plate belt.
Further, the support template assembly comprises a support keel and a support template, wherein the support keel comprises a horizontal transverse keel and a horizontal vertical keel, and the support keel is manufactured by section steel or a batten; the support template is a wood template or a steel template.
Further, the support changing and adjusting stand column is a solid column, and a protruding column body is arranged at the top of the support changing and adjusting stand column; the top of the protruding column body is connected below the support changing and jacking support; the support changing and adjusting diagonal braces are connected to the two sides outside the protruding column body and connected to the two sides below the support changing and adjusting jacking.
Further, the support-changing and adjusting hoop is in threaded connection with the support-changing and adjusting upright post, and the support-changing and adjusting hoop is connected to the top end of the support-adjusting sleeve in a supporting manner.
Furthermore, the support changing plate bands are rectangular, are arranged on the outer wall of the basement at intervals, are connected with the inner reinforcing steel bars of the outer wall of the basement in an anchoring manner, and are connected with the inner main reinforcing steel bars of the guard piles in a welding manner.
Further, the scaffold support comprises a tubular scaffold support upright post, a scaffold base connected below the scaffold support upright post, a scaffold support stiffening rib connected between the scaffold base and the scaffold support upright post, and a scaffold hoop connected on the scaffold body;
the scaffold body is a single-row scaffold and comprises a vertical rod and a transverse rod, and the vertical rod is inserted into a stand column of the scaffold support.
The beneficial effects of the invention are as follows:
1) The invention is beneficial to ensuring the installation foundation of the template system by arranging the support changing bracket, does not occupy the bottom space and is beneficial to bottom construction; the support replacing bracket is easy to install and convenient to turnover;
2) The support adjusting assembly is arranged, so that the support adjusting assembly is beneficial to ensuring the installation of different support template assemblies and carrying out local fine adjustment;
3) According to the invention, through the combined installation of the single-row scaffold body and the symmetrical steel pipes, the walking of workers in a narrow space is guaranteed, construction operation conditions are provided for the reinforcement of the outer wall, and the support protection of the two wall bodies is guaranteed.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary object and other advantages of the invention may be realized and attained by means of the instrumentalities and particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic construction diagram of a formwork support structure in a small space;
FIG. 2 is a schematic top view of a mixing pile, a retaining wall, a stay strip and an exterior wall of a basement;
FIG. 3 is a schematic view of a formwork support structure construction section in a confined space;
fig. 4 is a schematic view of the scaffold base structure;
FIG. 5 is a schematic view of the connection structure of the stent changing bracket and the stent changing adjustment assembly;
FIG. 6 is a schematic view of a support template assembly, a change strut adjustment assembly and their connection structure;
fig. 7 is a schematic structural view of a change strut adjustment assembly.
Reference numerals: 1-stirring piles, 2-enclosure walls, 3-floorslabs, 4-basement outer walls, 5-column piles, 6-inner supports, 7-type steel columns, 8-pile side enclosures, 9-support systems, 91-scaffold bodies, 92-scaffold supports, 921-scaffold support columns, 922-scaffold bases, 923-scaffold support stiffening ribs, 924-scaffold hoops, 93-support changing brackets, 931-support changing crossbars, 932-support changing vertical rods, 933-support changing diagonal rods, 94-support template assemblies, 941-support keels, 942-support templates, 95-support changing adjusting assemblies, 951-support changing columns, 952-support changing diagonal rods, 953-support changing jacking supports, 954-support changing horizontal pieces, 955-support changing sleeves, 956-support changing hoops, 10-support changing plate bands and 11-support changing steel pipes.
Detailed Description
Taking a three-layer basement as an example, each layer of the basement is provided with upright posts 5 and section steel posts 7 for supporting, and pouring construction of the support changing plate strip 10 is carried out in a narrow space as shown in fig. 1 to 7. The formwork support in the narrow space comprises stirring piles 1 arranged around the basement, a retaining wall 2 arranged in the stirring piles 1, a basement outer wall 4 arranged in the retaining wall 2, opposite supporting steel pipes 11 vertically and upwardly arranged between the basement outer wall 4 and the retaining wall 2 at intervals, and a support system 9 arranged between the supporting plate strips 10; wherein the horizontal distance between the enclosure wall 2 and the basement outer wall 4 is less than 1 meter.
In this embodiment, the support system 9 includes a scaffold body 91, a scaffold support 92 connected to the bottom of the scaffold body 91, a support changing bracket 93 disposed on the enclosure wall 2, a support template 942 assembly 94 connected to the top of the support changing bracket 93, and a support changing adjusting assembly 95 connected between the support changing bracket 93 and the support template 942 assembly 94; the support changing bracket 93 comprises a support changing cross bar 931, a support changing vertical bar 932 which is connected with the support changing cross bar 931 and is detachably connected with the enclosure wall 2, and a support changing diagonal bar 933 which is connected between the support changing cross bar 931 and the support changing vertical bar 932.
In this embodiment, the support-changing adjusting component 95 includes a support-changing adjusting column 951, a support-changing adjusting diagonal brace 952 connected to the top of the support-changing adjusting column 951, a support-changing adjusting jacking 953 connected to the top of the support-changing diagonal brace 952, a support-changing adjusting horizontal member 954 connected to the top of the support-changing jacking 953, a support-changing adjusting sleeve 955 connected to the periphery of the support-changing column 951 and connected to the support-changing cross bar 931, and a support-changing adjusting hoop 956 connected to the support-changing adjusting column 951 and sleeved on the top of the support-changing adjusting sleeve 955.
In the embodiment, the support changing and adjusting upright column 951 is a solid column, and a protruding column is arranged at the top of the support changing and adjusting upright column 951; the top of the protruding column body is connected below the support changing and jacking 953; the support-changing and adjusting diagonal braces 952 are connected to the two sides outside the protruding column and to the two sides below the support-changing and adjusting jacking 953. The support-changing and adjusting anchor ear 956 is in threaded connection with the support-changing and adjusting upright column 951, and the support-changing and adjusting anchor ear 956 is connected to the top end of the support-adjusting sleeve in a supporting mode.
In this embodiment, the scaffold support 92 comprises a tubular scaffold support post 921, a scaffold base 922 connected below the scaffold support post 921, scaffold support stiffeners 923 connected between the scaffold base 922 and the scaffold support post 921, and scaffold anchor ears 924 connected to the scaffold body 91. The scaffold body 91 is a single-row scaffold, and comprises a vertical rod and a cross rod, and the vertical rod is inserted into the scaffold support upright post 921.
Referring to fig. 1 to 7, a construction method using a formwork support in a narrow space is further described, and specific steps are as follows:
firstly, constructing a stirring pile 1, then constructing a retaining wall 2, and constructing a basement in a formed foundation pit; when the basement is constructed, the inner support 6 is arranged inside the basement outer wall 4, and the inner support 6 is sequentially arranged in multiple ways in the vertical direction according to construction procedures.
The cement stirring piles 1 are cement stirring piles 1, the cement stirring piles 1 are arranged in groups and are surrounded to form a foundation pit arrangement pattern, and adjacent cement stirring piles 1 are connected in a meshed mode; the enclosure wall 2 is a group of bored piles which are arranged at equal intervals.
The inner support 6 is arranged along with the construction of the basement outer wall 4, and the inner support 6 is a concrete support; the inner support 6 is removed from bottom to top in sequence, and the removal time is close to the lower bottom plate or the whole pouring maintenance of the floor slab 3. The pile edge enclosures 8 are respectively arranged at the same height with the corresponding bottom plate and each inner support 6, and the pile edge enclosures 8 are formed by casting plain concrete.
In the embodiment, the support changing plate strips 10 are rectangular and are arranged on the basement outer wall 4 at intervals, the steel bars in the support changing plate strips 10 are connected with the steel bars in the basement outer wall 4 in an anchoring way, and the anchoring length is not less than 40 times of the diameter of the steel bars; the steel bars in the support plate replacing strip 10 are welded with the main bars in the guard piles. The steel bars in the support-changing plate belt 10 are double-layer bidirectional steel bars, the double-layer bidirectional steel bars are welded with the main steel bars of the outer wall 4 of the basement, single-sided welding is adopted for welding 10d, and the height of the welding seam is larger than 8mm.
And step two, pile edge enclosures 8 are arranged on the outer sides of the basement outer walls 4 corresponding to the floor plates 3 and the inner supports 6 of the basement outer walls 4, and support exchanging plate belts 10 are arranged on the outer sides of the basement outer walls 4 corresponding to the floor plates 3 of each floor of the basement.
Step three, during construction, drilling holes in the wall body constructed by the enclosure wall 2, and fixing the support changing vertical rods 932 of the support changing bracket 93 by adopting expansion bolts; then a support template 942 assembly 94 is installed on top of the support changing cross bar 931; wherein, still be provided with between the support cross bar 931 and the support template 942 subassembly 94 and trade and prop the adjustment subassembly 95.
The support template 942 assembly 94 comprises a support keel 941 and a support template 942, wherein the support keel 941 comprises a horizontal transverse keel and a horizontal vertical keel, and the support keel 941 is made of section steel or a square; the support template 942 is a wood or steel template.
A support changing and adjusting sleeve 955 is pre-installed on the support changing cross bar 931, and the support changing cross bar 931 and the support changing diagonal bar 933 are manufactured by angle steel; at least two rows of expansion bolts are arranged on the support changing vertical rods 932, and the support changing vertical rods 932 are arranged below each design support changing plate belt 10.
And step four, the heights of the support changing and adjusting jacking 953 and the support changing and adjusting horizontal piece 954 are adjusted through the support changing and adjusting upright column 951 and the support changing and adjusting hoop 956 in the support changing and adjusting assembly 95, so that the design height of the support template 942 assembly 94 is adapted.
And fifthly, during construction, the scaffold frame body 91 and the scaffold support 92 are arranged on the pile edge enclosure 8 or the support changing plate belt 10 which are completed in construction, the scaffold frame body 91 is vertically and detachably connected with the opposite support steel pipe 11, and two ends of the opposite support steel pipe 11 are connected between the enclosure wall 2 and the basement outer wall 4.
And step six, the lower part of the inner support 6 is removed after each layer of pouring until the whole structure pouring is completed, and a replacement support bracket 93, a replacement support adjusting assembly 95 and a support template 942 assembly 94 are sequentially arranged according to the construction progress of each layer of the inner support for pouring construction of the replacement support plate belt 10 until the whole construction is completed.
The foregoing is merely illustrative of preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any changes or substitutions that would occur to those skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The construction method of the formwork support in the narrow space is characterized in that the formwork support in the narrow space comprises stirring piles (1) arranged around a basement, a retaining wall (2) arranged inside the stirring piles (1), a basement outer wall (4) arranged inside the retaining wall (2), opposite supporting steel pipes (11) arranged between the basement outer wall (4) and the retaining wall (2) at vertical intervals, and a supporting system (9) arranged between supporting plate strips (10); wherein the horizontal distance between the enclosure wall (2) and the basement outer wall (4) is less than 1 meter;
the support system (9) comprises a scaffold body (91), a scaffold support (92) connected to the bottom of the scaffold body (91), a support changing bracket (93) arranged on the enclosure wall (2), a support template (942) assembly (94) connected to the top of the support changing bracket (93) and a support changing adjusting assembly (95) connected between the support changing bracket (93) and the support template (942) assembly (94);
the support replacing bracket (93) comprises a support replacing cross rod (931), a support replacing vertical rod (932) which is connected with the support replacing cross rod (931) and is detachably connected with the enclosure wall (2), and a support replacing diagonal rod (933) which is connected between the support replacing cross rod (931) and the support replacing vertical rod (932);
the support changing and adjusting assembly (95) comprises a support changing and adjusting upright post (951), a support changing and adjusting diagonal brace (952) connected to the top of the support changing and adjusting upright post (951), a support changing and adjusting jacking (953) connected to the top of the support changing and adjusting diagonal brace (952), a support changing and adjusting horizontal piece (954) connected to the top of the support changing and adjusting jacking (953), a support changing and adjusting sleeve (955) connected to the periphery of the support changing and adjusting upright post (951) and connected to a support changing cross rod (931), and a support changing and adjusting hoop (956) connected to the support changing and adjusting upright post (951) and sleeved on the top of the support changing and adjusting sleeve (955);
the construction method for supporting the template in the narrow space comprises the following specific steps:
firstly, constructing a stirring pile (1) and then constructing a retaining wall (2), and constructing a basement in a formed foundation pit; when the basement is constructed, an inner support (6) is arranged inside the basement outer wall (4), and the inner supports (6) are sequentially arranged in multiple ways in the vertical direction according to construction procedures;
step two, pile edge enclosures (8) are arranged on the outer sides of the basement outer walls (4) corresponding to the floor plates (3) and the inner supports (6) of the basement outer walls (4), and support replacing plate belts (10) are arranged on the outer sides of the basement outer walls (4) corresponding to the floor plates (3) of the basement;
step three, during construction, drilling holes in the wall body constructed by the enclosure wall (2), and fixing a support changing vertical rod (932) of the support changing bracket (93) by adopting an expansion bolt; then, a supporting template (942) assembly (94) is arranged at the top of the support replacing cross bar (931); wherein, a support changing adjusting component (95) is arranged between the support changing cross rod (931) and the support template (942) component (94);
step four, adjusting the heights of a support changing and adjusting jacking (953) and a support changing and adjusting horizontal piece (954) through a support changing and adjusting upright column (951) and a support changing and adjusting hoop (956) in a support changing and adjusting assembly (95), so as to adapt to the design height of a support template (942) assembly (94);
step five, during construction, a scaffold frame body (91) and a scaffold support (92) are arranged on a pile side enclosure (8) or a support changing plate belt (10) which is completed in construction, the scaffold frame body (91) is vertically and detachably connected with a support steel pipe (11), and two ends of the support steel pipe (11) are connected between the enclosure wall (2) and the basement outer wall (4);
and step six, the lower part of the inner support (6) is removed after each layer of pouring until the whole structure pouring is completed, and a replacement support bracket (93), a replacement support adjusting assembly (95) and a support template (942) assembly (94) are sequentially arranged according to the construction progress of each layer and used for pouring construction of the replacement support plate belt (10) until the whole construction is completed.
2. The construction method of the formwork support in the narrow space according to claim 1, wherein the stirring piles (1) are cement stirring piles (1), the cement stirring piles (1) are arranged in groups and are surrounded to be in a foundation pit arrangement mode, and adjacent cement stirring piles (1) are connected in a meshed mode; the enclosure wall (2) is a group of bored piles which are arranged at equal intervals.
3. The construction method of the formwork support in the narrow space according to claim 1, wherein the inner support (6) is arranged along with the construction of the basement outer wall (4), and the inner support (6) is a concrete support; the inner support (6) is removed from bottom to top in sequence, and the removal time is close to the lower bottom plate or the floor (3) to finish the integral pouring maintenance.
4. The construction method of the formwork support in the narrow space according to claim 1, wherein the pile edge enclosures (8) are respectively arranged at the same height with the corresponding bottom plate and each inner support (6), and the pile edge enclosures (8) are formed by casting plain concrete.
5. The construction method of the formwork support in the narrow space according to claim 1, wherein a support changing and adjusting sleeve (955) is pre-installed on the support changing cross rod (931), and the support changing cross rod (931) and the support changing diagonal rod (933) are manufactured through angle steel; at least two rows of expansion bolts are arranged on the support changing vertical rods (932), and the support changing vertical rods (932) are arranged below each design support changing plate belt (10).
6. The construction method for formwork support in a small space according to claim 1, wherein the support formwork (942) assembly (94) comprises a support keel (941) and a support formwork (942), the support keel (941) comprises a horizontal cross keel and a horizontal vertical keel, and the support keel (941) is made of section steel or wood; the support form (942) is a wood form or a steel form.
7. The construction method of the formwork support in the narrow space according to claim 1, wherein the support changing and adjusting upright post (951) is a solid post, and a protruding post is arranged at the top of the support changing and adjusting upright post (951); the top of the protruding column body is connected below the support changing and jacking bracket (953); the support changing and adjusting diagonal braces (952) are connected to the two sides outside the protruding cylinder and are connected to the two sides below the support changing and adjusting jacking (953).
8. The construction method for the formwork support in the narrow space according to claim 1, wherein the support changing and adjusting hoop (956) is connected with the support changing and adjusting upright post (951) in a threaded mode, and the support changing and adjusting hoop (956) is connected to the top end of the support adjusting sleeve in a supporting mode.
9. The construction method for the formwork support in the narrow space according to claim 1, wherein the support changing plate strips (10) are rectangular, are arranged on the basement outer wall (4) at intervals, are connected with the reinforcing steel bars in the basement outer wall (4) in an anchoring manner, and are welded with the main reinforcing steel bars in the enclosure piles.
10. The construction method of a formwork support in a small space according to claim 1, wherein the scaffold support (92) comprises a tubular scaffold support column (921), a scaffold base (922) connected below the scaffold support column (921), a scaffold support stiffening rib (923) connected between the scaffold base (922) and the scaffold support column (921), and a scaffold anchor (924) connected to the scaffold body (91);
the scaffold body (91) is a single-row scaffold and comprises a vertical rod and a transverse rod, and the vertical rod is inserted into the scaffold support stand column (921).
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| CN202311118282.0A CN116837899B (en) | 2023-09-01 | 2023-09-01 | Construction method for formwork support in narrow space |
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| CN202311118282.0A CN116837899B (en) | 2023-09-01 | 2023-09-01 | Construction method for formwork support in narrow space |
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| CN116837899A true CN116837899A (en) | 2023-10-03 |
| CN116837899B CN116837899B (en) | 2023-12-12 |
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- 2023-09-01 CN CN202311118282.0A patent/CN116837899B/en active Active
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| KR20090064711A (en) * | 2007-12-17 | 2009-06-22 | 이창남 | Construction method of basement exterior wall applying the floor slab as the strut against the earth pressure from the temporary earth wall = tsw(thrusting slabbed wall) method |
| US20150211205A1 (en) * | 2014-01-29 | 2015-07-30 | Guangzhou Jishi Construction Group Co., Ltd. | Construction system for subway station |
| CN204199299U (en) * | 2014-10-31 | 2015-03-11 | 天津三建建筑工程有限公司 | The structural element of the overhanging type support replacement of the horizontal inner support of a kind of steel concrete |
| CN105951848A (en) * | 2016-07-01 | 2016-09-21 | 杭州江润科技有限公司 | Non-intermittent composite transfer structure for super-deep foundation pit support and construction method |
| CN218233483U (en) * | 2021-03-12 | 2023-01-06 | 中国联合工程有限公司 | Detachable section steel trades to prop and concurrently makes side wall scaffold braced system |
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