TWI688699B - Top support, top support system and construction method for tank - Google Patents

Abstract

The top support, which is provided on a top part of a wall and supports an object, includes a pair of pillar structures erected on the top part of the wall, and a connection structure connecting between the pair of pillar structures, and the connection structure is configured to be connected with an expansion unit configured to expand the separation between the pair of pillar structures.

Description

Top supporting structure, top supporting system and construction method of trough

The present disclosure relates to a top support structure, a top support system, and a method of constructing a tank.

The following Patent Document 1 discloses a method of constructing a cylindrical tank, which is used for storage of low-temperature liquids such as LNG (liquefied natural gas) and LPG (liquefied petroleum gas). The construction method of the cylindrical groove body includes: a process of establishing a side wall of the outer groove on the outer peripheral portion of the bottom of the outer groove; a process of assembling the roof portion of the outer groove on the outer peripheral bottom of the outer groove; the outer groove During the establishment of the side wall of the building, a jack-up device is used to raise the roof of the outer tank on the bottom of the outer tank and to maintain the side wall of the outer tank; and The process of assembling the inner tank independently of the roof of the outer tank in the space created under the roof. In this method, after the side wall of the outer tank is established, the suspension point of the lifting device is moved to the top of the side wall of the outer tank, and the roof of the outer tank is raised to the top of the side wall, and then the house of the outer tank The top is fixed on the inner wall surface of the side wall.

[Prior Technical Literature] [Patent Literature]

Patent Literature 1: International Publication No. 2014/073239

However, when the top of the outer tank is raised to the top of the side wall at this time, the lifting device is supported by the top support structure provided on the top of the side wall. The top support structure is arranged at the top of the side wall at a certain interval, whereby an equal lifting load can be distributed to the plurality of lifting devices. However, when constructing troughs of different sizes, the circumference of the top of the side wall is different, so if the width of the top supporting structure is not changed, installation may become difficult. In addition, when the side wall is formed of prestressed concrete, a sleeve is arranged at a certain interval on the top, and the interval is not necessarily the same as the installation interval of the top support structure, so the feet of the top support structure and the sleeve conflict and may There are situations that make the setting difficult.

This disclosure is developed in view of the above problems, and its purpose is to provide a roof support structure, a roof support system, and a method of constructing a tank suitable for constructing tanks of different scales, or constructing tanks with limited ceilings on the walls .

In order to solve the above problems, the first aspect of the present disclosure is a top support structure, which is provided on the top of the wall to support objects. The top support structure has: a pair of column structures standing on the top of the wall, And a connecting structure connecting the pair of column structures; the connecting structure system is configured as a connectable expansion unit that expands the gap between the pair of column structures.

In addition, in the first aspect of the present disclosure, the expansion unit may include a connecting beam portion connected to the connecting structure, and a middle column portion that reinforces the strength of the connecting beam portion.

In addition, in the first aspect of the present disclosure, the pair of column structures may have a column body connected to the center column via a brace.

In addition, in the first aspect of the present disclosure, the column portion system is detachably attached to a support plate that supports the object, and the center pillar portion may be joined to the support plate.

In addition, in the first aspect of the present disclosure, the object may be a lifting device.

Furthermore, the second aspect of the present disclosure is a top support system, which has a plurality of top support structures provided on the top of the wall to support the aforementioned first aspect of the object.

In addition, in the aforementioned second aspect of the present disclosure, the plurality of top support structures are provided on the top of the wall at intervals different from the interval at which the sleeve is provided on the top of the wall, Pre-stress is applied up and down the wall; in addition, the plurality of top support structures have a plurality of top support structures with different intervals between the pair of column structures, and the pair of column structures are disposed on the wall The area at the top is set to avoid the aforementioned sleeve.

Moreover, the third aspect of the present disclosure is a method of constructing a tank, which supports a plurality of lifting devices on the top of the side wall of the outer tank, and alternately implements the lifting objects performed by the plurality of lifting devices Ascending, and welding the inner side plate of the lower side of the lifting weight to construct the inner tank, the construction method of the tank body is on the top of the side wall of the outer tank, using the support of the plurality of lifting devices The top support system of the aforementioned second aspect.

According to the present disclosure, it is possible to provide a top support structure suitable for constructing tanks of different scales and constructing tanks with restrictions on the top of the wall.

1‧‧‧Basic Edition

2‧‧‧Side wall (wall)

2a‧‧‧Inner wall

2A‧‧‧Top

2b‧‧‧Outer wall

3‧‧‧Outer groove side plate

4‧‧‧Inner slot anchor hoop

5‧‧‧Concrete

5a‧‧‧Body

6‧‧‧Bottom pad

7‧‧‧roof

8‧‧‧Construction

9‧‧‧Inner slot side plate

9a‧‧‧The first structure

9b‧‧‧Second structure

10‧‧‧Portal frame

10a‧‧‧foot

11‧‧‧Corner board

12‧‧‧Cold structure

13‧‧‧Ring

14‧‧‧Inner slot roof

15‧‧‧Internal and external slots

19‧‧‧Lifting device

19a‧‧‧Lift body

19b‧‧‧Lifting rod

22‧‧‧Outer trough roof (roof body roof)

23‧‧‧ Lifting ladder

24‧‧‧ Roof ladder

25‧‧‧Pump

30‧‧‧Inner slot

39‧‧‧Bottom cold and heat resistance alleviating material

40‧‧‧foamed glass

44‧‧‧Insulation

50‧‧‧LNG tank (tank)

60‧‧‧lifting

70‧‧‧Hanging side stand

80‧‧‧Hanged side stand

90‧‧‧Casing

100‧‧‧Top support structure

100A, 100B, 100C‧‧‧top support structure

101‧‧‧Anchor bolt

102‧‧‧Base board

102a‧‧‧rod connecting part

103‧‧‧ Support body

103A‧‧‧Top

104a‧‧‧pillar structure

104b‧‧‧pillar structure

104c‧‧‧Link structure

104c1‧‧‧Beam Department

104c2‧‧‧Link board

105,105A,105B,105C‧‧‧support board

107‧‧‧Mounting plate

107a‧‧‧Plug through hole

108‧‧‧Anchor bolt

110‧‧‧Pedestal Department

120‧‧‧First beam department

121‧‧‧bolt

122‧‧‧Bar connection

123‧‧‧Bar connection

130‧‧‧pillar body

132‧‧‧Mounting plate

133‧‧‧Joint piece

140‧‧‧Second beam

141‧‧‧Bar connection

150‧‧‧First Connection Department

151‧‧‧

152‧‧‧

153‧‧‧Length adjustment section

160‧‧‧Second Link Department

161‧‧‧

162‧‧‧

163‧‧‧Length adjustment section

170‧‧‧The third link

180‧‧‧Expansion unit

180B, 180C‧‧‧Expansion unit

181‧‧‧Zhuzhu Department

181a‧‧‧First Steel

181b‧‧‧Second Steel

181c‧‧‧Link board

182‧‧‧Link beam

190‧‧‧arm

191‧‧‧arm mounting part

192‧‧‧arm mounting part

200‧‧‧Top support system

P1‧‧‧ First interval

P2‧‧‧Second interval

X‧‧‧circular area

α‧‧‧Angle

β‧‧‧Angle

FIG. 1 is an explanatory diagram showing the first step of the construction method of the embodiment of the present disclosure.

FIG. 2 is an explanatory diagram showing a second process of the construction method of the embodiment of the present disclosure.

FIG. 3 is an explanatory diagram showing a third process of the construction method of the embodiment of the present disclosure.

FIG. 4 is an explanatory diagram showing a fourth process of the construction method of the embodiment of the present disclosure.

FIG. 5 is an explanatory diagram showing a fifth project of the construction method of the embodiment of the present disclosure.

FIG. 6 is a side view showing the top support structure 100 according to the embodiment of the present disclosure.

Fig. 7 is a plan view showing the configuration of a top support system 200 having a plurality of top support structures 100 of the disclosed embodiments.

FIG. 8 is a front view showing a plurality of top support structures 100A, 100B, and 100C included in the top support system 200 shown in FIG. 7.

FIG. 9 is a plan view showing the top support structure 100A of the disclosed embodiment.

Fig. 10 is a sectional view taken along the line A-A of Fig. 9;

FIG. 11 is a top view of the top support structure 100B according to the disclosed embodiment.

Fig. 12 is a sectional view taken along the line B-B of Fig. 11;

FIG. 13 is a plan view showing the top support structure 100C of the disclosed embodiment.

Fig. 14 is a sectional view taken along the line C-C of Fig. 13;

Hereinafter, the present disclosure will be described with reference to the drawings. In the following description, an example of the construction method of the above-ground type PC (Prestressed Concrete) double-shell storage tank used for storing LNG is disclosed.

FIG. 1 is an explanatory diagram showing the first step of the construction method of the embodiment of the present disclosure. FIG. 2 is an explanatory diagram showing a second process of the construction method of the embodiment of the present disclosure.

In this technique, first, as shown in Fig. 1, a basic plate 1 having a substantially disc shape is constructed. An inner slot anchor 4 is embedded in the outer peripheral portion of the basic version 1. In addition, a side wall 2 (wall) is constructed on the outer peripheral edge of the basic plate 1. The side wall 2 is a PC wall formed by arranging a plurality of outer groove side plates 3 on the inner wall surface 2a (one wall surface).

The side wall 2 is constructed by building an outer groove side plate 3 on the basic plate 1 while using the outer groove side plate 3 as an inner formwork and laying concrete 5. The outer groove side plate 3 is a steel inner lining, and also serves as a concrete form, and the concrete 5 is erected with the establishment of the outer groove side plate 3 in the state where the scaffold 6b is provided, thereby sequentially establishing the side wall 2 from the bottom . The establishment of the outer groove side plate 3 is performed by joining a plurality of outer groove side plates 3 into a cylindrical shape along the circumferential direction of the tank body, and layering them layer by layer. After establishing a layer of the outer groove side plate 3, erection of the concrete 5 using the outer groove side plate 3 is carried out, and these works are carried out repeatedly, so that the cylindrical side wall 2 is established.

In this technique, the bottom liner 6 is laid on the basic plate 1 in parallel with the establishment of the side wall 2 as described above. Next, the roof gantry 7 is assembled at the center of the basic version 1. In addition, at the base end portion of the side wall 2, a construction port 8 for carrying in the inner groove side plate 9 and the like is formed. In addition, along the inner side of the base end portion of the side wall 2, a plurality of door-shaped gantry 10 for assembling the inner groove side panel are provided. The portal frame 10 is arranged to span an annular region X, which is used as a cylindrical inner groove formed by combining a plurality of inner groove side plates 9 and should be finally discharged to the foundation The area on version 1.

Next, under the portal gantry 10, a cooling structure 12 such as a perlite concrete block or a lightweight concrete block for structure is temporarily installed. Under the portal gantry 10, the cold preservation work of the ring portion 13 (refer to FIG. 2) by the cold preservation structure 12 is performed. The cooling work of the ring portion 13 is performed, for example, by assembling a perlite concrete block and a lightweight concrete block for construction on the bottom heat and heat resistance alleviating material, and installing a ring plate on it.

After the cooling work of the ring portion 13 is completed, the leg portion 10a originally arranged closer to the inner side of the tank than the ring portion 13 is inserted into the ring portion 13 (see FIG. 2 ). By this replacement, there is no interference in the inner side of the groove body than the ring-shaped portion 13, so that the cold preservation work at the central portion of the basic plate 1 can be performed. In the cold preservation work at the center, the foamed glass 40 is placed on the bottom heat and heat resistance alleviating material 39. In addition, a perlite concrete block (not shown) and an inner groove bottom plate (not shown) are sequentially stacked on top of it.

In addition, in this method, in parallel with the above-mentioned cooling work, as shown in FIG. 1, a plurality of lifting devices 19 are provided on the side wall 2. First, the hanging side stand 70 is provided in the middle section of the side wall 2. The hanging side stand 70 is detachably connected and fixed to an unillustrated anchor plate embedded in the side wall 2. In addition, the corner plate 11 assembled on the portal frame 10 is provided with the suspended side frame 80. The suspended side stand 80 is connected to the lifter body 19 a of the lifting device 19. In addition, the suspension side stand 70 is connected to a lifting rod 19b, and the lifting rod 19b is moved by the operation of the lifter body 19a.

After the lifting device 19 is installed in the above manner, the corner plate 11 is lifted, and the inner tank side plate 9 is carried into the lower space due to its lifting. The inner groove side plate 9 is transported to a predetermined welding position, and the adjacent inner groove side plates 9 are welded to each other, and are joined in the circumferential direction to make the whole into a cylindrical shape. Next, the upper end portion of the inner groove side plate 9 is attached to the lower end portion of the corner plate 11. Then, the upper end portion of the corner plate 11 is attached to the outer peripheral portion of the inner trough roof 14 (roof body roof) assembled on the roof gantry 7.

Next, the roof gantry 7 is removed, and the lifting object 60 including the inner trough roof 14, the corner plate 11, and the inner trough side plate 9 is lifted by the lifting device 19. When the lifting device 19 raises the lifting object 60 to a level corresponding to the vertical width of the inner tank side plate 9, the subsequent inner tank side plate 9 is carried into the space formed by the lifting of the lower portion of the inner tank side plate 9 . After aligning the inner groove side plate 9 carried in the circumferential direction, the upper end of the inner groove side plate 9 and the lower end of the lifting object 60 (inner groove side plate 9) are welded. In this way, in this method, the step of raising the inner tank side plate 9 by the lifting device 19 and the step of welding the lower side of the raised inner tank side plate 9 to the subsequent inner tank side plate 9 are alternately performed.

In addition, in this project, as shown in FIG. 2, the outer tank roof 22 (the roof of the tank body) is assembled on the inner tank top 14. The outer trough roof 22 is connected to the inner trough roof 14 by a connecting material (not shown), and is integrally assembled with the inner trough roof 14. In addition, when the lifting object 60 is lifted up to the stroke amount of the lifting lever 19b, the lifting point of the crane side is sequentially changed and set upward. Finally, the lifting point of the hanging side is changed to the top 2A of the side wall 2. At the top 2A of the side wall 2, a top support structure 100 that can be connected to the hanging side stand 70 is provided. The top support structure 100 is preferably installed when the scaffold 6b on the outside of the concrete 5 remains. In this way, the starting point of changing the hanging side is alternately and repeatedly changed, and the step of ascending the inner groove side plate 9 with the lifting device 19 and the step of welding the lower side of the rising inner groove side plate 9 to the subsequent inner groove side plate 9 To assemble the first structure 9a except the lowermost layer of the inner groove side plate 9.

FIG. 3 is an explanatory diagram showing a third process of the construction method of the embodiment of the present disclosure.

In this technique, as shown in FIG. 3, the lowermost layer of the inner groove side plate 9 and the first structure 9 a are respectively assembled to the ring portion 13. After the portal frame 10 is disassembled, the lowermost layer of the inner groove side plate 9 is placed on the annular portion 13 and aligned in the circumferential direction to weld the adjacent inner groove side plates 9 to each other so that the whole becomes cylindrical and assembled into the first二structure 9b. After the second structure 9b is assembled, the inner groove anchor 4 that has been provided in the basic plate 1 is attached to the second structure 9b. In addition, an up and down step 23 is provided outside the side wall 2. The pump barrel 25 is carried into the inside of the side wall 2.

FIG. 4 is an explanatory diagram showing a fourth process of the construction method of the embodiment of the present disclosure.

Next, in this technique, as shown in FIG. 4, the first structure 9a is dropped, the lower end of the first structure 9a is lowered to the upper end of the second structure 9b, and the first structure 9a and The second structure 9b is welded to assemble the inner tank 30. In this technique, the assembly of the lowermost layer of the inner tank 30 is separated from the assembly of the inner tank 30 by the lifting device 19, and the second structure 9b of the lowermost layer of the inner tank 30 is advanced to the annular portion 13 On the fixed. Accordingly, in this technique, for example, it takes about one month for the inner groove 30 to be a critical path for fixing the ring portion 13. Compared with the conventional technique, the construction period can be shortened.

FIG. 5 is an explanatory diagram showing a fifth project of the construction method of the embodiment of the present disclosure.

After the inner tank 30 is completed, the outer tank roof 22 is released from the inner tank top 14 by using a connecting material (not shown), and is fixed to the upper end of the side wall 2 assembled to the uppermost layer. In addition, a roof step 24 is provided on the outer trough roof 22. And, the pump barrel 25 is provided. Then, the lifting device 19 is removed.

After that, the fastening work of the side wall 2 is performed. Then, after the construction port 8 is closed, water is filled to perform a pressure resistance and airtightness test. Finally, the cold insulation material 44 is arranged between the inner and outer grooves 15 between the inner groove 30 and the side wall 2, and the cold insulation material 44 is also arranged between the inner groove roof 14 and the outer groove roof 22 to carry out cold preservation work, and the cold preservation is carried out by painting work and piping The LNG tank 50 is constructed for construction.

Next, referring to FIG. 6, the configuration of the above-described method of constructing the LNG tank 50 in which the top support structure 100 of the lifting device 19 is supported on the top 2A of the side wall 2 will be described.

FIG. 6 is a side view showing the top support structure 100 of the disclosed embodiment.

As shown in FIG. 6, the top support structure 100 is provided on the top 2A of the side wall 2 and supports the lifting device 19 on the side of the inner wall surface 2a of the side wall 2. The top support structure 100 has an anchor bolt 101, a base plate 102, and a support body 103.

Anchor bolts 101 are embedded vertically (horizontally) into a plurality of branches with respect to the outer wall surface 2b of the side wall 2. In this embodiment, the front end of the anchor bolt 101 is connected to the trunk body 5a in which the concrete 5 is embedded.

The base plate 102 is attached to the outer wall surface 2b of the side wall 2 via a plurality of anchor bolts 101. The base plate 102 is joined to the rod connecting portion 102a.

The support body 103 is vertically (vertically) erected on the top 2A of the side wall 2. The support body 103 is formed by a pair of left and right column structures 104a, 104b (only one side is shown in FIG. 6), and a support plate 105 supported by the pair of left and right column structures 104a, 104b. The pair of left and right column structures 104a, 104b are composed of a plurality of steel reinforced materials, etc., and the plurality of steel reinforced materials are connected at a predetermined position via a connecting structure 104c.

The support plate 105 has a mounting plate 107 which can detachably mount the hanging side stand 70 of the lifting device 19. The mounting plate 107 is formed with a plurality of insertion holes 107a at intervals in the vertical direction. This mounting plate 107 is provided with a pair of left and right. The insertion hole 107a is inserted through an unillustrated mounting bolt, and the mounting bolt locks the hanging side frame 70 and the mounting plate 107. With this, the lifting device 19 is supported on the support plate 105.

The pair of left and right column structures 104a, 104b each have a pedestal portion 110, a first beam portion 120, a column body 130, a second beam portion 140, a first coupling portion 150, a second coupling portion 160, and a third coupling portion 170 .

The pedestal portion 110 is fixed to the top 2A of the side wall 2 via a plurality of anchor bolts 108. The pedestal portion 110 may be formed of steel frame material such as I-shaped steel. Anchor bolts 108 are embedded vertically (horizontally) into a plurality of branches with respect to the top 2A of the side wall 2, and fix the lower flange of the pedestal portion 110 to the top 2A of the side wall 2.

The first beam portion 120 is fixed to the upper flange of the pedestal portion 110 via a plurality of bolts 121. The first beam portion 120 may be formed of a steel frame material such as I-shaped steel. The bolt 121 fixes the lower flange of the first beam portion 120 to the upper flange of the pedestal portion 110. The first beam portion 120 is supported by the pedestal portion 110 in a cantilever shape, and extends toward the outer wall surface 2b side of the side wall 2 (toward the radial outer side of the side wall 2). At the front end of the first beam portion 120 that protrudes outward from the outer wall surface 2b of the side wall 2, rod connecting portions 122, 123 are joined. The rod coupling portion 122 is joined to the lower surface of the lower flange of the first beam portion 120. In addition, the rod coupling portion 123 is joined to the upper surface of the upper flange of the first beam portion 120.

The column body 130 is joined to the upper flange of the first beam 120. The column body 130 may be formed of steel reinforced material such as I-shaped steel. The column body 130 is arranged directly above the pedestal 110 and is erected vertically upward from the upper flange of the first beam 120. A mounting plate 132 to which the support plate 105 is attached is attached via a mounting bolt near the top of the column body 130 (the top 103A of the support body 103).

The second beam portion 140 is joined to the back surface side (outside surface in the radial direction) of the middle portion (center portion in the vertical direction) of the column body 130. The second beam portion 140 may be formed of steel reinforced material such as I-shaped steel. The second beam portion 140 is supported on the column body 130 cantilevered above the first beam portion 120 and projects toward the outer wall surface 2b side of the side wall 2. At the front end of the second beam portion 140 that protrudes outward from the outer wall surface 2b of the side wall 2, a rod coupling portion 141 is joined. The rod coupling portion 141 is joined under the lower flange of the second beam portion 140.

The first connecting portion 150 is obliquely connected to the first beam portion 120 and the base plate 102. The first coupling portion 150 extends obliquely to the vertical direction. The angle α of the first connecting portion 150 with respect to the base plate 102 (the outer wall surface 2b of the side wall 2) is set to about 45 degrees. The first connecting portion 150 has: a rod 151, a rod 152, and a length adjusting portion 153; the rod 151 is a rod connecting portion 102a that is rotatably connected to the base plate 102 via a pin about a horizontal axis; The horizontal axis is rotatably connected to the rod connecting portion 122 of the first beam portion 120 via a pin; the length adjusting portion 153 connects the rods 151 and 152. The length adjustment part 153 is a cylindrical member screwed with the rods 151 and 152, and has threads cut inside. The length of the first connecting part 150 can be adjusted by rotating the length adjusting part 153.

The second connection portion 160 is vertically connected to the first beam portion 120 and the second beam portion 140. The second connecting portion 160 extends substantially in the vertical direction. The second coupling portion 160 has a lever 161, a lever 162, and a length adjustment portion 163; the lever 161 is a lever coupling portion 141 connected to the second beam portion 140 via a pin rotatably about a horizontal axis; and the lever 162 The rod connection portion 123 of the first beam portion 120 is rotatably connected to the horizontal axis via a pin; the length adjustment portion 163 is connected to the rods 161 and 162. The length adjustment part 163 is a cylindrical member screwed to the rods 161 and 162, and has threads cut inside. The length of the second connecting part 160 can be adjusted by rotating the length adjusting part 163.

The third coupling portion 170 is obliquely coupled to the second beam portion 140 and the top 103A of the support body 103 (the top of the column body 130). The third coupling portion 170 extends obliquely in the vertical direction. The angle β between the third coupling portion 170 and the second beam portion 140 is set to about 45 degrees. The third connecting portion 170 may be formed of iron-steel steel material such as I-shaped steel. The third connecting portion 170 is joined to the upper surface of the upper flange of the second beam portion 140 and the top and back surfaces of the column body 130 (the outer surface in the radial direction).

According to the top support structure 100 configured as described above, the moment load that occurs when the support plate 105 receives a load from the lifting device 19 toward the inner wall surface 2a side of the side wall 2 (tilt) is applied to the outer wall surface of the side wall 2 2b is transmitted to the anchor bolt 101 at an angle α, and this load acts not only as the shear load of the anchor bolt 101, but also as the pull-out load of the anchor bolt 101, thereby suppressing the rotation with the top 2A of the side wall 2 as a fulcrum And, it is possible to suppress the drop in the focus of the lifting device 19 caused by the top support structure 100.

FIG. 7 is a plan view showing the structure of a top support system 200 having a plurality of top support structures 100 of the disclosed embodiments. FIG. 8 is a front view showing a plurality of top support structures 100A, 100B, and 100C provided in the top support system 200 shown in FIG. 7.

As shown in FIG. 7, in this technique, in order to support a plurality of lifting devices 19 at a certain interval on the top 2A of the side wall 2, a top support system 200 composed of a plurality of top support structures 100 is constructed.

The top support system 200 of the present embodiment has top support structures 100A, 100B, and 100C, and the top support structures 100A, 100B, and 100C are a plurality of pairs of column structures 104a, 104b with different intervals. The top support structure 100A directly connects the pair of column structures 104a, 104b with the connection structure 104c, so that the width is the smallest among the plurality of top support structures. The top support structure 100B is connected to the expansion structure 180B that expands the gap between the pair of column structures 104a, 104b by the connection structure 104c, so that the width becomes larger than that of the top support structure 100A. Furthermore, the top support structure 100C is connected to the expansion structure 180C connecting and expanding the space between the pair of column structures 104a, 104b by the connection structure 104c, so that the width becomes larger than that of the top support structure 100B.

As shown in FIG. 8, the plurality of top support structures 100 are provided on the top 2A of the side wall 2 at the first interval P1. In addition, the reference of the first interval P1 is the center position of the top support structure 100 in the width direction (the circumferential direction of the side wall 2 ), and is the position where the lifting rod 19 b of the lifting device 19 is arranged. At the top 2A of the side wall 2, a sheath pipe 90 that applies pre-stress to the top and bottom of the side wall 2 is disposed at a second interval P2 different from the first interval P1. The second interval P2 is a narrower interval than the first interval P1. In this way, when the first interval P1 and the second interval P2 are different, an area where a pair of column structures 104a, 104b interfere with the sleeve 90 will appear, so in this embodiment, three types of top support structures can be used respectively 100A, 100B, 100C and set at the first interval P1 to avoid the sleeve 90. That is, the plurality of top support structures 100 are disposed at the top 2A of the side wall 2 at a different interval (the first interval P1) from the interval (the second interval P2) at which the sleeve 90 is provided at the top 2A of the side wall 2, The sleeve 90 pre-stresses the side wall 2 up and down.

FIG. 9 is a plan view showing the top support structure 100A of the disclosed embodiment. Fig. 10 is a sectional view taken along the line A-A of Fig. 9;

As shown in FIG. 9, the top support structure 100A includes a pair of column structures 104a, 104b, and a connecting structure 104c connecting the pair of column structures 104a, 104b. The connection structure 104c has a pair of beam portions 104c1 and a connection plate 104c2, the pair of beam portions 104c1 is joined to each of the opposing surfaces of the pair of column structures 104a, 104b, and the connection plate 104c2 is connected to the connection one To the beam portion 104c1.

The pair of beam portions 104c1 is formed of steel reinforced material such as H-shaped steel. The connecting plate 104c2 connects the pair of beam portions 104c1 via a plurality of bolts. As shown in FIG. 9 and FIG. 10, the connecting plate 104c2 connects the upper and lower flanges of the pair of beam portions 104c1 and both side surfaces of the rib (web). According to the above configuration, the pair of column structures 104a, 104b can be connected by bolting, so assembly and disassembly of the top support structure 100A are easy.

As shown in FIG. 10, the pair of column structures 104a, 104b have a brace attachment portion 191 to which a brace 190 (diagonal brace) can be attached. The brace arm mounting portion 191 is also bolted to make the brace arm 190 detachable. The brace mounting portion 191 is installed on the side surface of the column body 130. In the top support structure 100A, the pillar body 130 of the pair of pillar structures 104 a and 104 b are connected to each other via the brace 190.

FIG. 11 is a top view of the top support structure 100B according to the disclosed embodiment. Fig. 12 is a sectional view taken along the line B-B of Fig. 11;

As shown in FIG. 11, the top support structure 100B includes a pair of column structures 104a, 104b, a coupling structure 104c, and an expansion unit 180B coupled to the coupling structure 104c. The expansion unit 180B has a connection beam portion 182 connected to the connection structure 104c, and a center pillar portion 181 that reinforces the strength of the connection beam portion 182.

The connecting beam portion 182 is formed of a steel reinforced material such as H-shaped steel similarly to the pair of beam portions 104c. The connecting beam portion 182 is interposed between the pair of beam portions 104c1, and expands the interval between the pair of column structures 104a, 104b. In other words, by arranging the connecting beam portion 182 between the pair of beam portions 104c1, the width of the top support structure 100B in the circumferential direction of the side wall 2 becomes larger than the width of the top support structure 100A. One end and the other end of the connection beam portion 182 are respectively connected to the pair of beam portions 104c1 via the connection plate 104c2. According to the above configuration, the expansion unit 180B can be connected by bolting, so the assembly and disassembly of the top support structure 100B are easy.

As shown in FIG. 11, the center pillar portion 181 is disposed between the pillar body 130 of the pair of pillar structures 104 a, 104 b to reinforce the strength of the connecting beam portion 182 connecting the pair of pillar bodies 130. As shown in FIG. 12, the center pillar portion 181 is formed of steel skeleton material such as I-shaped steel, similar to the pillar body 130. The center pillar portion 181 of the present embodiment has a structure in which the first steel material 181a and the second steel material 181b are connected by a connecting plate 181c, but it may be formed by one steel material. On both sides of the center pillar portion 181, support arm mounting portions 192 are provided, and the center pillar portion 181 is connected to the pillar body 130 via the support arm 190.

As shown in FIG. 11, the center pillar portion 181 is joined to the support plate 105B. The support plate 105B receives the expansion of the gap between the pair of column structures 104a and 104b due to the connection of the expansion unit 180B, and the joint piece 133 is added. When the expansion unit 180B is connected, the interval between the mounting plates 132 to which the support plate 105B is detachably mounted by bolting is expanded, so the joint piece 133 is added in order to receive the lifting load.

FIG. 13 is a plan view showing the top support structure 100C of the disclosed embodiment. Fig. 14 is a sectional view taken along the line C-C of Fig. 13;

As shown in FIG. 13, the top support structure 100C includes a pair of column structures 104a, 104b, a coupling structure 104c, and an expansion unit 180C coupled to the coupling structure 104c. The expansion unit 180C has a long connecting beam portion 182 connected to the connecting structure 104c, and two center pillar portions 181 that reinforce the strength of the connecting beam portion 182.

The connection beam portion 182 is connected to the pair of beam portions 104c1 via the connection plate 104c2 as described above. According to this configuration, the expansion unit 180C can be connected by bolting, so assembly and disassembly of the top support structure 100C can be easily performed.

In addition, two center pillar portions 181 are arranged between the pillar body 130 of the pair of pillar structures 104a, 104b. As shown in FIG. 14, the two center pillar portions 181 are connected to the pillar body 130 disposed in the vicinity of each via a support arm 190.

As shown in FIG. 13, the two center pillar portions 181 each engage the support plate 105C. The support plate 105C receives a further expansion of the interval between the pair of column structures 104a and 104b due to the connection of the expansion unit 180C, thereby widening the width of the support plate 105C itself, and adding two joining pieces 133. The two joining pieces 133 are respectively joined to the two center pillar portions 181.

According to the top support structure 100 and the top support system 200 configured as described above, as shown in FIGS. 7 and 8, the expansion unit 180 is connected by the connection structure 104c between the connection and the pair of column structures 104a, 104b. 180B or 180C), so that the width of the top support structure 100 can be adjusted without applying structural changes to the pair of column structures 104a, 104b and the connecting structure 104c. In this way, in the construction of the LNG tank 50 with different scales, the pair of column structures 104a, 104b and the connecting structure 104c can also be materialized and recycled.

Furthermore, as shown in FIG. 8, when the sleeve 90 is disposed on the top 2A of the side wall 2 and the structure of the LNG tank 50 with the restriction is provided, even if a plurality of types of top supporting structures 100 with different widths are required, By simply connecting the expansion units 180 with corresponding widths, a plurality of types of top supporting structures 100B, 100C with different widths can be constructed, so that construction costs can be reduced.

Furthermore, as shown in FIGS. 12 and 14, the expansion unit 180 has a connecting beam portion 182 connected to the connecting structure 104c and a center pillar portion 181 that reinforces the strength of the connecting beam portion 182, so the expansion can be ensured Part of the intensity.

In addition, the pair of post structures 104 a and 104 b have the post body 130 connected to the center post 181 via the support arm 190, so that the connection strength with the expansion unit 180 can be improved.

Further, as shown in FIGS. 11 and 13, the pillar body 130 is detachably attached to the support plate 105 via the attachment plate 132, and the center pillar portion 181 is joined to the support plate 105 via the bonding piece 133. The expansion unit 180 is added according to the scale of the LNG tank 50 and the like, and the support plate 105 made according to the interval between the pair of column structures 104a, 104b is also a dedicated part, so it is disassembled together. Removed without materialization. Therefore, the center pillar portion 181 such as the mounting plate 132 of the pillar body 130 is not bolted, thereby reducing the number of bolts and reducing the mounting work of the support plate 105.

In this way, according to the present embodiment described above, the following configuration is adopted: it is provided on the top 2A of the side wall 2 to support the top support structure 100 of the lifting device 19, and has a pair of columns standing on the top 2A of the side wall 2 The structures 104a, 104b and the connecting structure 104c connecting the pair of column structures 104a, 104b, and the connecting structure 104c can connect the expansion unit 180, which expands the pair of column structures 104a, 104b Thus, the top support structure 100 suitable for constructing LNG tanks 50 of different scales or constructing LNG tanks 50 with restrictions on the top 2A of the side wall 2 can be provided.

The appropriate embodiments of the present disclosure have been described above with reference to the drawings, but the present disclosure is not limited to the above-mentioned embodiments. The shapes and combinations of the constituent members shown in the above-mentioned embodiments are examples, and various changes can be made according to design requirements and the like without departing from the gist of the present disclosure.

For example, the top support structure 100 can be assembled in batches on the ground at one time, and mounted on the top 2A of the side wall 2 using a crane or the like, but the connecting plate 104c2 can be detached and the crane or the like can be used in a state of being decomposed into at least two blocks. Mounted on the top 2A of the side wall 2. According to this configuration, the top support structure 100 is decomposed into a plurality of blocks, so the stability of lifting is improved, and the expansion unit 1 is connected as necessary, so the top support structure 100 can be safely assembled.

In addition, for example, in the above-mentioned embodiment, the configuration in which the top supporting structure 100 supports the lifting device 19 has been described, but the object supported by the top supporting structure 100 is not limited to the lifting device 19. For example, the top support structure 100 may be configured to support a suspended scaffold, a winch, or the like.

Furthermore, in this embodiment, the top support structure 100 is provided on the top 2A of the side wall 2 of the cylindrical LNG tank 50, but the present disclosure is not limited to this configuration. For example, the top support structure 100 may also be disposed on the top of the wall of the rectangular groove. The tank of this embodiment may be used for low-temperature liquids such as LPG storage instead of LNG storage. In addition, for example, the top supporting structure 100 may be provided on a wall-shaped structure on the top of a weir that blocks water.

2‧‧‧Side wall (wall)

2a‧‧‧Inner wall

2A‧‧‧Top

2b‧‧‧Outer wall

90‧‧‧Casing

100‧‧‧Top support structure

100A, 100B, 100C‧‧‧top support structure

104a‧‧‧pillar structure

104b‧‧‧pillar structure

104c‧‧‧pillar structure

105‧‧‧Support board

105A‧‧‧Support board

105B‧‧‧Support board

105C‧‧‧Support board

180‧‧‧Expansion unit

180B‧‧‧Expansion unit

180C‧‧‧Expansion unit

200‧‧‧Top support system

Claims (8)

A top support structure is provided on the top of the wall to support objects. The top support structure has: a pair of column structures that are erected on the top of the wall and configured to be isolated from each other along the extending direction of the wall And a connecting structure that connects the pair of column structures; the connecting structure system can connect the expansion unit that expands the pair of column structures relative to the wall. The roof support structure according to item 1 of the patent application scope, wherein the expansion unit includes: a connection beam portion connected to the connection structure; and a center pillar portion that reinforces the strength of the connection beam portion. The top support structure as described in item 2 of the patent application range, wherein the pair of column structure systems has a column body connected to the center column via a brace arm. The top support structure as described in item 3 of the patent application range, wherein the column part system is detachably mounted with a support plate supporting the object, and the center column part is engaged with the support plate. The top support structure according to any one of items 1 to 4 of the patent application scope, wherein the aforementioned object is a lifting device. A top support system is provided with a plurality of the top of the wall to support the object of any one of items 1 to 5 of the patent application Top support structure. The top support system according to item 6 of the patent application scope, wherein the plurality of top support structures are provided at the top of the wall at intervals different from the interval at which the sleeve is provided at the top of the wall, the sleeve Pre-stress is applied to the upper and lower sides of the wall, the plurality of top support structures have a plurality of top support structures with different intervals between the pair of column structures, and the region of the pair of column structures provided on the top of the wall It is set in such a way as to avoid the aforementioned sleeve. A method for constructing a trough, which supports a plurality of lifting devices on the top of the side wall of the outer tank, and alternately repeatedly executes the lifting of the lifting objects by the plurality of lifting devices and the lifting of the foregoing lifting The inner groove side plate under the object is welded, and the inner groove is constructed. The construction method of the groove body is: on the top of the side wall of the outer groove, use the patent application scope supporting the plurality of lifting devices. Item 6 or 7 The top support system described.

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