TW201907081A - 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 support structure, top support system, and construction method of tank  

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

Patent Document 1 below discloses a method of constructing a cylindrical tank which is used for storage of a cryogenic liquid such as LNG (liquefied natural gas) or LPG (liquefied petroleum gas). The cylindrical groove body is constructed by: forming a side wall of the outer groove at a peripheral portion outside the bottom of the outer groove; assembling a roof portion of the outer groove on the bottom of the groove other than the outer peripheral portion; During the establishment of the side wall, the roof portion of the outer trough on the bottom of the outer trough is raised by the jack-up device, and is maintained in the side wall of the outer trough; and in the outer trough due to its rise In the space generated below the roof portion, the inner tank is assembled independently of the roof portion of the outer tank. In this method, after the side wall of the outer tank is established, the lifting point of the lifting device is moved to the top of the side wall of the outer tank, and the roof portion of the outer tank is lifted to the top of the side wall, and then the outer tank house is The top is fixed to the inner wall surface of the side wall.

 [Previous Technical Literature]    [Patent Literature]  

Patent Document 1: International Publication No. 2014/073239

However, when the top of the outer trough is raised to the top of the side wall at this point, the lifting device is supported by a top support structure disposed at the top of the side wall. The top support structure is disposed at a top of the side wall at a certain interval, whereby an equal number of lifting loads can be assigned to the plurality of lifting devices. However, when the tanks of different sizes are constructed, the circumference of the top of the side wall is different. Therefore, if the width of the top support structure is not changed, the installation may become difficult. In addition, when the side walls are formed of pre-stressed concrete, the sleeves are arranged at intervals at the top, and the intervals are not necessarily the same as the spacing of the top support structures, so the feet of the top support structure collide with the casings. There are situations in which setting becomes difficult.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a top support structure, a top support system, and a tank construction method suitable for constructing a tank having a different scale or a tank having a restriction at the top of the wall. .

In order to solve the above problems, a first aspect of the present disclosure is a top support structure provided at a top of a wall to support an object, the top support structure having: a pair of pillar structures standing on the top of the wall, And a connection structure that connects the pair of column structures; the connection structure system is a connectable expansion unit that expands a space between the pair of column structures.

Further, in the first aspect of the present disclosure, the expansion unit may include a column portion that is connected to the connection beam portion of the connection structure and the strength that reinforces the connection beam portion.

Further, in the first aspect of the present disclosure, the pair of column structures may have a column portion body that is coupled to the center pillar portion via a brace.

Further, in the first aspect of the present disclosure, the column portion system is detachably mounted with a support plate for supporting the object, and the center pillar portion may be joined to the support plate.

Further, 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 having a plurality of top support structures disposed on the top of the wall to support the first aspect of the object.

Further, in the 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 disposed at the top of the wall, the sleeve being paired with the foregoing Pre-stressing is applied to the upper and lower sides of the wall; further, the plurality of top support structures have a plurality of top support structures different in spacing between the pair of column structures, and the pair of column structures are disposed on the wall The area at the top is set in such a way as to avoid the aforementioned sleeve.

Moreover, the third aspect of the present disclosure is a method for constructing a trough body, wherein a plurality of lifting devices are supported on the top of the side wall of the outer trough, and the lifting objects carried by the plurality of lifting devices are alternately and repeatedly carried out. Raising and splicing the inner groove side plates on the lower side of the raised lifting object to construct an inner groove, the groove body is constructed on the top of the side wall of the outer groove, and the plurality of lifting devices are supported. The top support system of the second aspect described above.

According to the present disclosure, it is possible to provide a top support structure suitable for constructing a tank having a different scale and a tank having a restriction on the top of the wall.

1‧‧‧ Basic Edition

2‧‧‧ Sidewall (wall)

2a‧‧‧ inner wall

2A‧‧‧ top

2b‧‧‧ outer wall

3‧‧‧ outer trough side panels

4‧‧‧Internal groove anchor

5‧‧‧ concrete

5a‧‧‧body body

6‧‧‧Bottom liner

7‧‧‧ Roof rack

8‧‧‧ construction port

9‧‧‧Inch slot side panel

9a‧‧‧First structure

9b‧‧‧Second structure

10‧‧‧door frame

10a‧‧‧foot

11‧‧‧ Corner board

12‧‧‧Safety structure

13‧‧‧Rings

14‧‧‧Inch roof

15‧‧‧Internal and external trough rooms

19‧‧‧ Lifting device

19a‧‧‧lifter body

19b‧‧‧ Lifting pole

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

23‧‧‧ Lifting ladder

24‧‧‧ Roof ladder

25‧‧‧ pumping cylinder

30‧‧‧ Inside slot

39‧‧‧Bottom hot and cold resistance tempering material

40‧‧‧foamed glass

44‧‧‧ Keep cold materials

50‧‧‧LNG tank (slot)

60‧‧‧ lifting objects

70‧‧‧ hanging side stand

80‧‧‧ hanging side frame

90‧‧‧ casing

100‧‧‧Top support structure

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

101‧‧‧ anchor bolt

102‧‧‧Base board

102a‧‧‧ rod joint

103‧‧‧Support body

103A‧‧‧ top

104a‧‧‧column structure

104b‧‧‧column structure

104c‧‧‧Linked structure

104c1‧‧‧ Beam Department

104c2‧‧‧link board

105,105A,105B,105C‧‧‧Support board

107‧‧‧Installation board

107a‧‧‧ inserted through hole

108‧‧‧ anchor bolt

110‧‧‧Deputy Department

120‧‧‧First Beam

121‧‧‧Bolts

122‧‧‧ rod joint

123‧‧‧ rod joint

130‧‧‧column body

132‧‧‧Installation board

133‧‧‧Joint piece

140‧‧‧Second beam

141‧‧‧ rod joint

150‧‧‧First Link

151‧‧‧ rod

152‧‧‧ rod

153‧‧‧ Length adjustment department

160‧‧‧Second link

161‧‧‧ rod

162‧‧‧ rod

163‧‧‧ Length Adjustment Department

170‧‧‧ Third Link

180‧‧‧Expansion unit

180B, 180C‧‧‧ expansion unit

181‧‧‧中柱部

181a‧‧‧First steel

181b‧‧‧second steel

181c‧‧‧link board

182‧‧‧Linked beam

190‧‧‧ Arms

191‧‧‧Brace arm installation

192‧‧‧Brace arm installation

200‧‧‧Top Support System

P1‧‧‧ first interval

P2‧‧‧ second interval

X‧‧‧ring area

‧‧‧‧ angle

‧‧‧‧ angle

Fig. 1 is an explanatory view showing a first project of the construction method of the embodiment of the present disclosure.

Fig. 2 is an explanatory view showing a second construction of the construction method of the embodiment of the present disclosure.

Fig. 3 is an explanatory view showing a third project of the construction method of the embodiment of the present disclosure.

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

Fig. 5 is an explanatory view showing a fifth example of the construction method of the embodiment of the present disclosure.

Figure 6 is a side elevational view of the top support structure 100 of the embodiment of the present disclosure.

Figure 7 is a plan view showing the construction of a top support system 200 having a plurality of top support structures 100 of the disclosed embodiment.

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

Figure 9 is a plan view showing the top support structure 100A of the embodiment of the present disclosure.

Figure 10 is a cross-sectional view taken along line A-A of the arrow of Figure 9.

Figure 11 is a plan view showing the top support structure 100B of the embodiment of the present disclosure.

Figure 12 is a cross-sectional view taken along line B-B of the arrow of Figure 11.

Figure 13 is a plan view showing the top support structure 100C of the embodiment of the present disclosure.

Figure 14 is a cross-sectional view taken along line C-C of the arrow of Figure 13.

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

Fig. 1 is an explanatory view showing a first project of the construction method of the embodiment of the present disclosure. Fig. 2 is an explanatory view showing a second construction of the construction method of the embodiment of the present disclosure.

In this method, first, as shown in Fig. 1, a basic plate 1 having a substantially disk shape is constructed. An inner arm anchor 4 is embedded in the outer peripheral portion of the base plate 1. Further, a side wall 2 (wall) is constructed on the outer peripheral edge portion of the base 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 forming the outer groove side plate 3 on the base plate 1 while the outer groove side plate 3 is an inner formwork and the concrete 5 is placed. The outer groove side plate 3 is a steel lining, and also serves as a concrete formwork, and the concrete 5 is provided with the outer groove side plate 3 in the state in which the eagle frame 6b is provided, thereby establishing the side wall 2 in order from the bottom. . The outer groove side plate 3 is formed by joining a plurality of outer groove side plates 3 into a cylindrical shape in the direction around the groove body, and stacking them one by one. After the outer tank side panel 3 is formed, the installation of the concrete 5 using the other tank side panel 3 is performed, and the cylindrical side wall 2 is established by repeating the above-mentioned processes.

In this method, the bottom liner 6 is laid on the base plate 1 in parallel with the establishment of the side wall 2 as described above. Next, the roof stand 7 is assembled at the center of the base plate 1. Further, a construction port 8 for carrying in the inner tank side plate 9 or the like is formed at the base end portion of the side wall 2. Further, a plurality of gantry stages 10 for assembling the inner groove side plates are provided along the inner side of the base end portion of the side wall 2. The gantry stage 10 is disposed so as to straddle an annular region X which is a cylindrical inner groove formed by combining a plurality of inner groove side plates 9 and finally discharged to the foundation. The area on version 1.

Next, under the gantry stage 10, a cold-preserving structure 12 such as a perlite concrete block or a lightweight concrete block for structure is temporarily provided. Under the gantry stage 10, the cold-keeping work of the annular portion 13 (see Fig. 2) by the cold-insulation structure 12 is performed. The cold-retaining work of the annular portion 13 is carried out, for example, by assembling a perlite concrete block, a lightweight concrete block for construction, and a ring-shaped plate thereon, on the bottom cold heat resistance retarding material.

After the cold-keeping work of the annular portion 13 is completed, the leg portion 10a that is originally disposed closer to the inside of the groove than the annular portion 13 is inserted into the annular portion 13 (see Fig. 2). By this insertion, there is no interference object inside the groove body than the annular portion 13, so that the cold-keeping work at the center portion of the base plate 1 can be performed. In the cold-keeping work at the center, the foamed glass 40 is placed on the bottom cold heat-resistance-reducing material 39. Further, a perlite concrete block (not shown) and an inner groove bottom plate (not shown) are stacked in this order.

Further, in the present method, as shown in Fig. 1, in parallel with the above-described cold preservation work, a plurality of lifting devices 19 are provided on the side wall 2. First, a hanging side stand 70 is provided in the middle portion of the side wall 2. The hanging side stand 70 is detachably connected to an anchor plate (not shown) that is embedded in the side wall 2. Further, the corner plate 11 assembled on the portal frame 10 is provided with a suspended side stand 80. The suspended side frame 80 is coupled to the lifter body 19a of the lifting device 19. Further, the hanging side stand 70 is coupled to the lift lever 19b, and the lift lever 19b is moved by the movement of the lifter body 19a.

After the lifting device 19 is installed as described above, the corner plate 11 is lifted, and the inner groove side plate 9 is carried into the lower space by lifting. The inner groove side plate 9 is conveyed to a predetermined welding position, and the adjacent inner groove side plates 9 are welded to each other and joined in the circumferential direction to have a cylindrical shape as a whole. Next, the upper end portion of the inner groove side plate 9 is attached to the lower end portion of the corner plate 11. Further, the upper end portion of the corner plate 11 is attached to the outer peripheral portion of the inner groove roof 14 (the roof of the tank body) assembled on the roof frame 7.

Next, the roof gantry 7 is removed, and the hoisting material 60 including the inner tank roof 14, the corner plate 11, and the inner groove side plate 9 is lifted by the lifting device 19. When the lifting device 60 is raised by the lifting device 19 to the extent of the upper and lower webs of the inner groove side plate 9, the succeeding inner groove side plate 9 is carried into the space formed by the lower portion of the inner groove side plate 9 by the lifting device 19 . After the inner groove side plates 9 loaded therein are aligned in the circumferential direction, the upper ends thereof and the lower ends of the weights 60 (the inner groove side plates 9) are welded. In this manner, in the present method, the step of raising the inner groove side plate 9 by the lifting device 19 and the step of welding the lower side of the raised inner groove side plate 9 and the succeeding inner groove side plate 9 are alternately repeated.

Further, in this project, as shown in Fig. 2, the outer tank roof 22 (the roof of the tank) is assembled on the inner tank top portion 14. The outer tank roof 22 is connected to the inner tank roof 14 by a connecting material (not shown), and is integrally assembled with the inner tank roof 14. Further, when the lifting weight 60 is lifted up to the stroke amount of the lift lever 19b, the focus change on the hanging side is sequentially set to the upper side. Finally, the focus of the hanging side is changed to the top 2A of the side wall 2. At the top portion 2A of the side wall 2, a top support structure 100 to which the hanging side frame 70 can be coupled is provided. The top support structure 100 is preferably provided when the scaffold 6b on the outer side of the concrete 5 is left still. In this manner, the step of changing the lifting side of the hanging side is performed alternately, and the step of raising the inner groove side plate 9 by the lifting device 19 and the step of welding the lower side of the rising inner groove side plate 9 and the succeeding inner groove side plate 9 are performed. The first structure 9a except the lowermost layer of the inner groove side plate 9 is assembled.

Fig. 3 is an explanatory view showing a third project of the construction method of the embodiment of the present disclosure.

In the present method, as shown in Fig. 3, the lowermost layer of the inner groove side plate 9 and the first structure 9a are assembled to the annular portion 13, respectively. After the gantry stage 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 to form a cylindrical shape as a whole. Two structures 9b. After the second structure 9b is assembled, the groove anchor 4 which has been disposed in the base plate 1 is attached to the second structure 9b. Further, on the outside of the side wall 2, a lifting step 23 is provided. The pump cylinder 25 is carried into the inner side of the side wall 2.

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

Next, in the present method, as shown in Fig. 4, the first structure 9a is lowered, the lower end portion of the first structure 9a is lowered to the upper end portion of the second structure 9b, and the first structure 9a is The second structure 9b is welded to assemble the inner tank 30. In this method, the assembly of the lowermost layer of the inner tank 30 and the assembly and separation of the inner tank 30 by the lifting device 19 advance the second structure 9b of the lowermost layer of the inner tank 30 to the annular portion 13 Fixed on the top. Accordingly, in the present method, for example, it takes about one month to fix the groove 30 to the annular portion 13 without becoming a critical path, and it is possible to shorten the construction period as compared with the conventional method.

Fig. 5 is an explanatory view showing a fifth example of the construction method of the embodiment of the present disclosure.

After the completion of the inner tank 30, the outer tank roof 22 is disconnected from the inner tank top portion 14 by a connecting member (not shown), and is fixed to the upper end portion of the side wall 2 assembled to the uppermost layer. Further, a roof step 24 is provided on the outer tank roof 22. Also, a pump cylinder 25 is provided. Then, the lifting device 19 is removed.

Thereafter, the fastening work of the side wall 2 is performed. Then, after the construction port 8 was closed, water was filled to carry out a pressure resistance and airtight test. Finally, the heat retaining material 44 is disposed between the inner and outer grooves 15 between the inner tank 30 and the side wall 2, and the heat retaining material 44 is also disposed between the inner tank roof 14 and the outer tank roof 22 to perform cold keeping work, and is cooled by the coating work and the piping. The LNG tank 50 is constructed by work.

Next, referring to Fig. 6, a description will be given of a configuration in which the top support structure 100 of the lift device 19 is supported on the top portion 2A of the side wall 2 in the method of constructing the LNG tank 50 described above.

Figure 6 is a side elevational view of the top support structure 100 of the embodiment of the present disclosure.

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

The anchor bolt 101 is embedded with a plurality of branches perpendicularly (horizontal direction) to the outer wall surface 2b of the side wall 2. In the present 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 coupling portion 102a.

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

The support plate 105 has a mounting plate 107 that is detachably mountable to 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 a mounting bolt (not shown), and the mounting bolt locks the side frame 70 and the mounting plate 107. Thereby, the lifting device 19 is supported by the support plate 105.

Each of the pair of right and left column structures 104a and 104b has a pedestal portion 110, a first beam portion 120, a column portion body 130, a second beam portion 140, a first connecting portion 150, a second connecting portion 160, and a third connecting portion 170. .

The pedestal portion 110 is fixed to the top portion 2A of the side wall 2 via a plurality of anchor bolts 108. The pedestal portion 110 may be formed of a steel aggregate such as an I-beam. The anchor bolt 108 is formed by vertically burying a plurality of branches perpendicularly (horizontally) with respect to the top portion 2A of the side wall 2, and fixing the lower flange of the pedestal portion 110 to the top portion 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 aggregate such as an I-beam. 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 manner, and protrudes toward the outer wall surface 2b side of the side wall 2 (toward the outer side in the radial direction of the side wall 2). The rod connecting portions 122, 123 are joined to the front end of the first beam portion 120 that protrudes outward from the outer wall surface 2b of the side wall 2. The rod coupling portion 122 is joined to the lower surface of the lower flange of the first beam portion 120. Further, 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 portion 120. The column body 130 may be formed of a steel aggregate such as an I-beam. The column main body 130 is disposed directly above the pedestal portion 110 and is erected upward from the upper flange of the first beam portion 120 in the vertical direction. A mounting plate 132 to which the support plate 105 is mounted is joined via a mounting bolt in the vicinity of the top of the column body 130 (the top portion 103A of the holder body 103).

The second beam portion 140 is joined to the back side (the surface on the outer side in the radial direction) of the middle portion (the intermediate portion in the vertical direction) of the column portion main body 130. The second beam portion 140 may be formed of a steel aggregate such as an I-beam. The second beam portion 140 is supported by the column portion body 130 in a cantilever manner above the first beam portion 120, and protrudes toward the outer wall surface 2b side of the side wall 2. The rod connecting portion 141 is joined to the front end of the second beam portion 140 that protrudes outward from the outer wall surface 2b of the side wall 2. The rod coupling portion 141 is engaged below the lower flange of the second beam portion 140.

The first connecting portion 150 is coupled to the first beam portion 120 and the base plate 102 obliquely. The first joint portion 150 extends obliquely in the vertical direction. The angle α of the first joint 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 rotatably coupled to the rod connecting portion 102a of the base plate 102 via a tip end; the rod 152 is rotatable The horizontal axis is rotatably coupled to the rod coupling portion 122 of the first beam portion 120 via the insertion end; the length adjusting portion 153 is coupled to the rods 151, 152. The length adjusting portion 153 is a cylindrical member that is screwed to the rods 151 and 152, and has a thread cut inside. The length of the first joint portion 150 can be adjusted by rotating the length adjusting portion 153.

The second connecting portion 160 is coupled to the first beam portion 120 and the second beam portion 140 in the vertical direction. The second joint portion 160 extends substantially in the vertical direction. The second coupling portion 160 has a rod 161, a rod 162, and a length adjusting portion 163; the rod 161 is rotatably coupled to the rod coupling portion 141 of the second beam portion 140 via a distal end; the rod 162 is The rod coupling portion 123 of the first beam portion 120 is coupled to the first beam portion 120 so as to be rotatable about a horizontal axis; the length adjusting portion 163 is coupled to the rods 161, 162. The length adjusting portion 163 is a cylindrical member that is screwed to the rods 161 and 162, and has a thread cut inside. The length of the second joint portion 160 can be adjusted by rotating the length adjusting portion 163.

The third coupling portion 170 is obliquely coupled to the second beam portion 140 and the top portion 103A of the holder body 103 (the top of the column portion body 130). The third joint portion 170 extends obliquely in the vertical direction. The angle β of the third joint portion 170 and the second beam portion 140 is set to be about 45 degrees. The third joint portion 170 may be formed of an iron ore steel such as an I-beam. The third coupling portion 170 is joined to the upper surface of the upper flange of the second beam portion 140 and the top surface (the surface on the outer side in the radial direction) of the column portion body 130.

According to the top support structure 100 configured as described above, the moment load which is rotated (tilted) toward the inner wall surface 2a side of the side wall 2 which occurs when the support plate 105 receives the load from the lifting device 19 is applied to the outer wall surface of the side wall 2 2b is conveyed to the anchor bolt 101 at an angle α, and this load acts not only as a shear load of the anchor bolt 101 but also as a pulling load of the anchor bolt 101, thereby suppressing rotation with the top 2A of the side wall 2 as a fulcrum The focus of the lifting device 19 caused by the top support structure 100 can be suppressed from decreasing.

Figure 7 is a top plan view showing the construction of a top support system 200 having a plurality of top support structures 100 of the disclosed embodiment. Figure 8 is a front elevational view showing a plurality of top support structures 100A, 100B, 100C of the top support system 200 shown in Figure 7.

As shown in Fig. 7, in the present method, in order to support a plurality of lifting devices 19 at a certain interval between the top portions 2A of the side walls 2, a top supporting system 200 composed of a plurality of top supporting structures 100 is constructed.

The top support system 200 of the present embodiment has top support structures 100A, 100B, 100C, and the top support structures 100A, 100B, and 100C are different in the interval between a plurality of pairs of column structures 104a and 104b. In the top support structure 100A, the pair of column structures 104a and 104b are directly connected by the connection structure 104c, and the width is minimized among the plurality of top support structures. The top support structure 100B is connected to the connection structure 104c to expand the expansion unit 180B that enlarges the interval between the pair of column structures 104a and 104b, and the width is made larger than the top support structure 100A. Further, the top support structure 100C is connected to the expansion structure 180C in which the connection structure 104c is connected to expand the interval between the pair of column structures 104a and 104b, and the width is made larger than that of the top support structure 100B.

The plurality of top support structures 100 are disposed at the top portion 2A of the side wall 2 at a first interval P1 as shown in FIG. Further, the reference portion of the first interval P1 supports the center position of the width direction of the structure 100 (the peripheral direction of the side wall 2), and is the position of the lift lever 19b where the lift device 19 is disposed. The top portion 2A of the side wall 2 is provided with a sheath pipe 90 for applying a pre-stress to the upper and lower sides of the side wall 2 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 is different from the second interval P2, a region where the pair of column structures 104a, 104b interfere with the sleeve 90 occurs, so in the present embodiment, three types of top support structures can be used respectively. 100A, 100B, 100C are disposed at a first interval P1 to avoid the sleeve 90. That is, the plurality of top support structures 100 are disposed at the top of the side wall 2 at a different interval (first interval P1) than the sleeve 90 is disposed at the top of the side wall 2 (second interval P2), The sleeve 90 is prestressed against the upper and lower sides of the side wall 2.

Figure 9 is a plan view showing the top support structure 100A of the embodiment of the present disclosure. Figure 10 is a cross-sectional view taken along line A-A of the arrow of Figure 9.

As shown in Fig. 9, the top support structure 100A includes a pair of column structures 104a and 104b and a connection structure 104c that connects the pair of column structures 104a and 104b. The connection structure 104c includes a pair of beam portions 104c1 and a connecting plate 104c2 that are joined to the respective faces of the opposing faces of the pair of column structures 104a and 104b, and the connecting plate 104c2 is coupled to the connecting plate 104c2. For the beam portion 104c1.

The pair of beam portions 104c1 are formed of a steel aggregate such as H-beam. The connecting plate 104c2 connects the pair of beam portions 104c1 via a plurality of bolts. As shown in FIGS. 9 and 10, the connecting plate 104c2 connects the upper and lower sides of the pair of beam portions 104c1 and the side faces of the ribs (web). According to the above configuration, the pair of column structures 104a and 104b can be connected by bolt connection, so that the assembly and disassembly of the top support structure 100A can be easily performed.

As shown in Fig. 10, the pair of column structures 104a, 104b have a strut attachment portion 191 to which a brace 190 (diagonal support) can be attached. The arm attachment portion 191 is also bolted to make the arm 190 detachable. The arm mounting portion 191 is mounted on a plurality of sides of the column body 130. In the top support structure 100A, the column body 130 of the pair of column structures 104a, 104b are coupled to each other via the arms 190.

Figure 11 is a plan view showing the top support structure 100B of the embodiment of the present disclosure. Figure 12 is a cross-sectional view taken along line B-B of the arrow of Figure 11.

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

Similarly to the pair of beam portions 104c, the connecting beam portion 182 is formed of a steel aggregate such as H-shaped steel. 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 coupling beam portion 182 between the pair of beam portions 104c1, the width of the top supporting structure 100B in the circumferential direction of the side wall 2 becomes larger than the width of the top supporting structure 100A. One end and the other end of the connecting beam portion 182 are connected to the pair of beam portions 104c1 via the connecting plate 104c2. According to the above configuration, the expansion unit 180B can be connected by bolt connection, so that the assembly and disassembly of the top support structure 100B can be easily performed.

As shown in Fig. 11, the center pillar portion 181 is disposed between the column body 130 of the pair of column structures 104a and 104b to reinforce the strength of the connecting beam portion 182 between the pair of pillar portions 130. As shown in Fig. 12, the center pillar portion 181 is formed of a steel aggregate such as an I-shaped steel, similarly to the column portion 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 the connecting plate 181c, but may be formed of one steel material. The arm attachment portion 192 is provided on both side faces of the center pillar portion 181, and the center pillar portion 181 is coupled to the pillar portion body 130 via the stay arm 190.

As shown in Fig. 11, the center pillar portion 181 is joined to the support plate 105B. The support plate 105B is subjected to the connection of the expansion unit 180B to expand the interval between the pair of column structures 104a and 104b, and the bonding piece 133 is added. When the expansion unit 180B is connected, the interval between the attachment plates 132 to which the support plate 105B is detachably attached by bolting is expanded. Therefore, the engagement piece 133 is added in order to receive the lift load therebetween.

Figure 13 is a plan view showing the top support structure 100C of the embodiment of the present disclosure. Figure 14 is a cross-sectional view taken along line C-C of the arrow of Figure 13.

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

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

Further, the center pillar portion 181 is disposed between the column body 130 of the pair of column structures 104a and 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 of the two pillar portions 190 via the arms 190.

As shown in Fig. 13, the two center pillar portions 181 each engage the support plate 105C. The support plate 105C receives the connection of the expansion unit 180C to further expand the interval between the pair of column structures 104a and 104b, and widens the width of the support plate 105C itself, and adds two pieces of the bonding piece 133. Two pieces of engaging pieces 133 are joined to the two center pillar portions 181, respectively.

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 coupled to the connection structure 104c that is coupled to the pair of column structures 104a and 104b ( 180B or 180C), 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 connection structure 104c. Thereby, in the construction of the LNG tank 50 having different scales, the pair of column structures 104a and 104b and the joint structure 104c can be materialized and recycled.

Further, as shown in Fig. 8, the sleeve 90 is disposed on the top portion 2A of the side wall 2, and in the construction of the LNG tank 50 having the restriction, even if a plurality of types of the top support structure 100 having different widths are required, Only by connecting the expansion unit 180 having the corresponding width, it is possible to construct a plurality of types of top support structures 100B and 100C having different widths, thereby reducing the construction cost.

Further, as shown in FIGS. 12 and 14, the expansion unit 180 has the center pillar portion 181 that is coupled to the connection beam portion 182 of the connection structure 104c and the strength of the reinforcement coupling beam portion 182, so that the expansion can be ensured. Part of the strength.

Further, since the pair of column structures 104a and 104b have the column main body 130 coupled to the center pillar portion 181 via the stay arm 190, the connection strength with the expansion unit 180 can be improved.

Further, as shown in FIGS. 11 and 13 , the column main 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 engagement piece 133 . The expansion unit 180 is added in accordance with the scale of the LNG tank 50, etc., and the support plate 105 produced in accordance with the interval between the pair of column structures 104a and 104b is also a dedicated component, and is thus disassembled. Withdraw without being materialized. Therefore, the center pillar portion 181 is such that the mounting plate 132 of the pillar portion main body 130 is not bolted, thereby reducing the number of bolts to be fixed, and the mounting work of the support plate 105 can be reduced.

In this manner, according to the present embodiment described above, a configuration is provided in which the top portion 2A of the side wall 2 is supported to support the top support structure 100 of the lifting device 19, and has one of the tops 2A standing on the side wall 2 The structures 104a and 104b and the connection structure 104c that connects the pair of column structures 104a and 104b, and the connection structure 104c can connect the expansion unit 180, and the expansion unit 180 expands the pair of column structures 104a and 104b. In this case, it is possible to provide a top support structure 100 suitable for constructing an LNG tank 50 having a different scale or a LNG tank 50 having a restriction on the top portion 2A of the side wall 2.

Although the preferred embodiments of the present disclosure have been described above with reference to the drawings, the present disclosure is not limited to the embodiments described above. The shapes, combinations, and the like of the respective constituent members shown in the above-described embodiments can be variously changed in accordance with design requirements and the like without departing from the scope of the present invention.

For example, the top support structure 100 may be assembled in batches at a time on the ground, and may be mounted to the top portion 2A of the side wall 2 by a crane or the like, but the connecting plate 104c2 may be detached, and the crane or the like may be utilized in a state of being decomposed into at least two blocks. Mounted to 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 that the stability of the lifting is improved, and the expansion unit 1 is connected as needed, so that the top support structure 100 can be assembled safely.

Further, for example, in the above embodiment, the configuration in which the top support structure 100 supports the lift device 19 has been described, but the object supported by the top support structure 100 is not limited to the lift device 19. For example, the top support structure 100 may also be configured to support a suspended scaffold, a winch, and the like.

Further, in the present embodiment, the top support structure 100 is provided on the top portion 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 can also be placed on top of the wall of the rectangular trough. The tank body of the present embodiment may be used in a low-temperature liquid such as a storage LPG without using LNG in storage. Further, for example, the top support structure 100 may be provided in a wall structure that blocks the top of a water or the like.

Claims (8)

 A top support structure is provided at the top of the wall to support an object, the top support structure having: a pair of column structures erected on top of the wall; and a connection structure connecting the pair of column structures Between the bodies; the connection structure system may be connected to an expansion unit that expands the interval between the pair of column structures.    The top support structure according to claim 1, wherein the expansion unit has a connection beam portion coupled to the connection structure, and a center pillar portion for reinforcing the strength of the connection beam portion.    The top support structure according to claim 2, wherein the pair of column structure systems have a column portion body coupled to the center pillar portion via a stay arm.    The top support structure according to claim 3, wherein the column portion system is detachably mounted with a support plate for supporting the object, and the center pillar portion is joined to the support plate.    The top support structure according to any one of claims 1 to 4, wherein the object is a lifting device.    A top support system having a plurality of top support structures as set forth in any one of claims 1 to 5, which are disposed at the top of the wall to support the object.    The top support system of claim 6, wherein the plurality of top support structures are disposed on top of the wall at a different spacing from the spacing of the sleeves disposed at the top of the wall, the sleeve Prestressing the upper and lower sides of the wall, the plurality of top support structures having a plurality of top support structures having different intervals of the pair of column structures, and the pair of column structures being disposed at the top of the wall It is set in such a way as to avoid the aforementioned casing.    A tank body is constructed by supporting a plurality of lifting devices at the top of the side walls of the outer tank, and alternately performing the lifting of the lifting objects by the plurality of lifting devices and lifting the lifting The inner groove is formed by welding the inner side plate of the lower side of the object, and the groove is constructed by using the sixth or seventh patent application range supporting the plurality of lifting devices at the top of the side wall of the outer groove. The top support system is described.