Assembled imitation wall column without partition board and mortise and tenon pile and construction method

Abstract

The present invention provides an assembled imitation wall column without partitions and with mortise and tenon piles and a construction method, comprising a wall, mortise and tenon piles, an insertable adjustment plate, and an adjustment device. The adjustment bracket and the adjustment support seat of the adjustment device are respectively arranged on the sides of two butt joint walls to adjust and control the gap size between the two butt joint walls and the verticality of the wall. The two ends of the insertable adjustment plate are respectively inserted into the upper and lower butt joint walls to play an auxiliary role in adjusting the gap size between the two butt joint walls and the verticality of the wall. After the adjustment is completed, the insertable adjustment plate is welded and fixed to the upper and lower walls, and finally the upper wall is welded and fixed to the lower wall. The present invention solves the problems of the existing technology that the imitation wall column has partitions, resulting in poor synergy between concrete and steel pipes, the partitions in the upper wall and the lower wall cannot be butt-welded, the strength of the connection is low, and the assembly is easy to be misplaced and tilted.

Description

Technical Field

[0001] The invention relates to the technical field of imitation wall column construction, in particular to an assembled imitation wall column without partition board and with mortise and tenon piles and a construction method. Background Art

[0002] Prefabricated buildings are the future direction of construction. On this basis, the structural form is reasonable and the cost-effectiveness is improved. The existing prefabricated walls are made of steel pipes. Partitions are welded in the steel pipes of the upper and lower walls to separate the upper and lower walls into multiple chambers. When the upper wall and the lower wall are butt-welded, the partitions in the upper and lower walls cannot be butt-welded, resulting in the problem of weak nodes and strong rods, that is, the area of ​​the welding connection at the joint of the upper and lower walls is small, and the strength does not meet the standard; at the same time, because of the partitions, the upper and lower walls are divided into multiple chambers by the partitions, so that the concrete is separated in each chamber and cannot form a whole, which is not easy to be densely constructed and has poor synergy. At the same time, when docking, the upper and lower walls are prone to docking misalignment, the upper wall is tilted, and it is inconvenient to adjust, which in turn causes the wall structure strength to be substandard, the load-bearing capacity is weak, and there are safety hazards. Summary of the invention

[0003] The invention provides an assembled imitation wall column without partitions and with mortise and tenon piles and a construction method, so as to solve the problems in the prior art that the imitation wall column has partitions, resulting in poor synergy between concrete and steel pipes, the partitions in the upper wall and the lower wall cannot be butt-welded, the strength of the connection is low, and the assembly is easy to be dislocated and tilted.

[0004] In order to solve the above technical problems, the present invention provides an assembled imitation wall column without partition board and with mortise and tenon piles, comprising a wall body, an insertable adjustment plate, an adjustment device, and mortise and tenon piles, wherein the wall body is composed of a plurality of steel sections, and the connection seams between the steel sections are arranged on the side of the wall body;

[0005] The insertable adjustment plate comprises a plate body and a bolt fixing seat, wherein the bolt fixing seat is fixed on the plate body, the wall comprises an upper wall and a lower wall, the plate body is fixed on the lower end of the upper wall, a plurality of insertable adjustment plates are arranged on the lower end of the upper wall, the bolt fixing seat of the insertable adjustment plate is inserted into the lower wall, the lower wall and the bolt fixing seat are fixedly connected by wall bolts, and a gap is left between the upper wall and the lower wall for welding;

[0006] The adjustment device includes an adjustment bracket and an adjustment support seat. The adjustment bracket is fixedly installed on the lower end of the upper wall side, and the adjustment support seat is installed on the upper end of the lower wall side. The adjustment bracket is threaded with an adjustment bolt, and the adjustment bolt is supported by the adjustment support seat.

[0007] The shapes of the wall formed by a plurality of the steel sections include "I" shape, "X" shape, "T" shape and "L" shape.

[0008] A welding support plate is arranged inside the connection seam between the section steels.

[0009] The steel section is provided with a connection hole, in which a mortise and tenon pile is welded, and the mortise and tenon pile connects and fixes two face-to-face steel sections.

[0010] A plurality of lower end long grooves are formed at the lower end of the upper wall body, and a plurality of upper end long grooves are formed at the upper end of the lower wall body.

[0011] The plate body comprises a wide plate section and a narrow plate section, wherein the width of the wide plate section is greater than the thickness of the outer wall of the wall, and the width of the narrow plate section is less than the thickness of the inner wall of the wall.

[0012] The wide plate section is inserted into the lower end long groove and the upper end long groove and is welded and fixed to the wall.

[0013] The adjusting bracket is in a "J" shape as a whole, and the lower hook at the lower end of the adjusting bracket supports the bottom surface of the upper wall, and the adjusting bracket is fixed to the lower end of the side surface of the upper wall by bolts.

[0014] The upper end of the lower wall is provided with steps along the periphery.

[0015] The adjustable support seat includes a vertical plate and a horizontal block, the vertical plate is fixedly connected to the horizontal block, the adjustable support seat is generally in the shape of a "7", the horizontal block is located on the step of the lower wall, and the vertical plate is located on the side of the lower wall; the adjustable support seat is hooked on the lower wall.

[0016] A guide welding support plate is welded and fixed around the inner wall of the lower end of the upper wall, the upper end of the guide welding support plate is welded and fixed to the inner wall of the upper wall, and the lower end of the guide welding support plate is bent toward the inside of the wall.

[0017] Concrete is injected into the upper wall and the lower wall.

[0018] A construction method, applied to any of the above-mentioned assembled imitation wall columns without partitions and with mortise and tenon piles, comprises the following steps:

[0019] Step (1): according to the requirements of the shape of the construction wall, steel sections of corresponding shapes are manufactured and spliced ​​into a wall, and welding support plates are arranged on the inner side of the joints between the steel sections to weld and fix the steel sections;

[0020] Step (2): inserting the wide plate section of the insertable adjustment plate into the long groove at the lower end and welding and fixing it;

[0021] Step (3): Hold the bottom surface of the upper wall with the lower hook at the lower end of the adjustment bracket, and fix the adjustment bracket to the lower end of the side surface of the upper wall with bolts;

[0022] Step (4): Hook the adjustable support seat on the step of the lower wall, hook the horizontal block of the adjustable support seat on the top surface of the lower wall, and make the vertical plate close to the side surface of the lower wall;

[0023] Step (5): connect the upper wall and the lower wall, insert the narrow plate section of the plug-in adjustment plate into the lower wall, insert the wide plate section into the upper long groove, and support the adjustment bolt of the adjustment device against the adjustment support seat;

[0024] Step (6): Rotate the adjusting bolt of the adjusting device on the side of the wall to control the distance between the adjusting bracket and the adjusting support seat, thereby adjusting the verticality of the side of the upper wall where the adjusting bracket is located, and also adjusting the height of the gap between the upper wall and the lower wall;

[0025] Step (7): insert wall bolts into the lower wall to match the bolt fixing seat threads of the inserted adjustment plate, weld the wide plate section to the lower wall at the upper long groove, and remove the adjustment device;

[0026] Step (8): Weld the upper wall and the lower wall together at the gap between them.

[0027] Step (9): Pour concrete into the upper wall and the lower wall.

[0028] The step (1) also includes opening a connection hole on the steel section, inserting a mortise and tenon pile into the connection hole, welding and fixing the steel section and the mortise and tenon pile at the connection hole, and connecting and fixing two face-to-face steel sections.

[0029] The step (2) also includes welding and fixing a guide welding support plate around the inner wall of the lower end of the upper wall, and welding and fixing the upper end of the guide welding support plate to the inner wall of the upper wall.

[0030] The beneficial effects brought by the present invention are as follows: (1) The inner cavity of the wall is transparent without partitions, which is convenient for construction and easy to compact. The concrete and steel sections work together, the welding effect between the upper wall and the lower wall is good, the connection strength of the connection parts is high, and the overall structural effect of strong nodes and weak rods is achieved.

[0031] (2) The inclination of the wall is adjustable, the verticality of the wall is easy to control, the adjustment is convenient, and the safety is improved.

[0032] (3) The prefabricated production method has high production efficiency and batch modular production, which improves on-site construction efficiency and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0034] Figure 2is a schematic diagram of coordination according to an embodiment of the present invention;

[0035] Figure 3 yes Figure 1 A top view of

[0036] Figure 4 is a schematic diagram of a "T"-shaped wall formed by steel sections according to an embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of an adjustment bracket according to an embodiment of the present invention;

[0038] Figure 6 is a front view of an adjustment bracket according to an embodiment of the present invention;

[0039] Figure 7 is a schematic structural diagram of an adjustment support seat according to an embodiment of the present invention;

[0040] Figure 8 is a front view of an adjustment support seat according to an embodiment of the present invention;

[0041] Fig. 9 is a schematic diagram of the cooperation between the adjustment bracket and the adjustment support seat according to an embodiment of the present invention;

[0042] Fig.10 is a schematic structural diagram of an insertable adjustment plate according to an embodiment of the present invention;

[0043] Fig.11 is a schematic diagram of the cooperation between the plug-in adjustment plate and the upper wall and the lower wall according to an embodiment of the present invention;

[0044] Fig.12 is a schematic diagram of an "L"-shaped wall formed by steel sections according to an embodiment of the present invention;

[0045] Fig.13 1 is a top view of an "L"-shaped assembled imitation wall column without partitions and with mortise and tenon piles according to an embodiment of the present invention;

[0046] Among them, 1-wall, 101-upper wall, 102-lower wall, 2-insertion type adjustment plate, 3-adjustment device, 4-steel, 5-plate body, 6-bolt fixing seat, 7-adjustment bracket, 8-adjustment support seat, 9-adjustment bolt, 10-welding support plate, 11-vertical plate, 12-horizontal block, 13-connecting hole, 14-mortise and tenon pile, 15-lower end long groove, 16-upper end long groove, 17-wide plate section, 18-narrow plate section, 19-guide welding support plate, 20-wall bolt, 21-step, 22-lower hook. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Embodiment 1

[0049] A kind of assembled wall column without partition board and with mortise and tenon piles, such as Figure 4 The "T"-shaped wall 1 is formed by three steel sections 4, the steel sections 4 are cold-bent steel sections or hot-rolled steel sections, the connection seams between the steel sections 4 are arranged on the side of the wall 1, and a welding support plate 10 is arranged inside the connection seams between the steel sections 4. The steel sections 4 are welded and fixed in pairs, and the welding support plate 10 arranged inside the connection seams prevents the welding from melting through and the welding molten iron from flowing out. Figure 3 A connecting hole 13 is opened on the steel section 4, and a mortise and tenon pile 14 is welded in the connecting hole 13. The mortise and tenon pile 14 connects and fixes the two facing steel sections 4.

[0050] like Figure 1-3 , Figure 5-9 The adjusting device 3 includes an adjusting bracket 7 and an adjusting support seat 8. The adjusting bracket 7 is in a "J" shape as a whole. The lower hook 22 at the lower end of the adjusting bracket 7 hooks the bottom surface of the wall 101, and the adjusting bracket 7 is fixed to the lower end of the side of the upper wall 101 by bolts. The adjusting support seat 8 includes a vertical plate 11 and a horizontal block 12. The vertical plate 11 is fixedly connected to the horizontal block 12. The adjusting support seat 8 is generally in a "7" shape. The horizontal block 12 is hooked on the step 21 of the lower wall 102. The vertical plate 11 is tightly attached to the side of the lower wall 102, and the adjusting support seat 8 is hooked on the lower wall 102. The adjusting bracket 7 is threaded with an adjusting bolt 9, and the adjusting bolt 9 is supported by the adjusting support seat 8.

[0051] like Figure 1-3 , Figure 10-11 The insertable adjustment plate 2 includes a plate body 5 and a bolt fixing seat 6. The plate body 5 includes a wide plate section 17 and a narrow plate section 18. The width of the wide plate section 17 is greater than the thickness of the outer wall of the wall 1, and the width of the narrow plate section 18 is less than the thickness of the inner wall of the wall 1. A plurality of lower end long grooves 15 are formed at the lower end of the upper wall 101, and a plurality of upper end long grooves 16 are formed at the upper end of the lower wall 102. The wide plate section 17 is inserted into the lower end long grooves 15 and welded, and then inserted into the upper end long grooves 16 in the wall 102 on site and welded to the inserted wall 102.

[0052] A guide welding support plate 19 is welded and fixed around the inner wall of the lower end of the upper wall 101. The upper end of the guide welding support plate 19 is welded and fixed to the inner wall of the upper wall 101, and the lower end of the guide welding support plate 19 is bent toward the inside of the wall 1. When the upper wall 101 and the lower wall 102 are butt-jointed, because the lower end of the guide welding support plate 19 is bent toward the inside of the wall 1, the guide welding support plate 19 plays a role of guiding and facilitating the butt-jointing. When the upper wall 101 and the lower wall 102 are subsequently welded, the guide welding support plate 19 is located on the inner side of the upper wall 101 and the lower wall 102 to prevent the melted welding liquid from melting and flowing out from the inside. The steps 21 arranged along the periphery of the upper end of the lower wall 102 are conducive to the accumulation of the welding liquid.

[0053] A construction method, applied to the above-mentioned assembled non-partitioned imitation wall column with mortise and tenon piles, comprises the following steps:

[0054] Step (1): In a production plant, according to the requirements of the shape of the construction wall 1, steel sections 4 of corresponding shapes are manufactured and spliced ​​into the wall 1, and welding support plates 10 are arranged on the inner side of the connecting seams between the steel sections 4 to weld and fix the steel sections 4 in pairs; it also includes opening a plurality of connecting holes on the steel sections, inserting mortise and tenon piles into the connecting holes, welding and fixing the steel sections and the mortise and tenon piles at the connecting holes, and connecting and fixing the two face-to-face steel sections.

[0055] Step (2): In the production plant, the wide plate section 17 of the insertable adjustment plate 2 is inserted into the lower end long groove 15 and welded and fixed; the process also includes welding and fixing a guide welding support plate around the inner wall of the lower end of the upper wall, and welding and fixing the upper end of the guide welding support plate to the inner wall of the upper wall;

[0056] Step (3): At the construction site, the lower hook 22 at the lower end of the adjusting bracket 7 is hooked onto the bottom surface of the upper wall 101, and the adjusting bracket 7 is fixed to the lower end of the side surface of the upper wall 101 by bolts;

[0057] Step (4): Hook the adjustable support seat 8 on the step 21 of the lower wall 102, hook the horizontal block 12 of the adjustable support seat 8 on the top surface of the lower wall 102, and make the vertical plate 11 close to the side surface of the lower wall 102;

[0058] Step (5): dock the upper wall 101 with the lower wall 102, insert the narrow plate section 18 of the insertable adjustment plate 2 into the lower wall 102, insert the wide plate section 17 into the upper long groove 16, and support the adjustment bolt 9 of the adjustment device 3 against the adjustment support seat 8;

[0059] Step (6): Rotate the adjusting bolt 9 of the adjusting device 3 on the side of the wall 1 to control the distance between the adjusting bracket 7 and the adjusting support seat 8, thereby adjusting the verticality of the side of the upper wall 101 where the adjusting bracket 7 is located, and also adjust the height of the gap between the upper wall 101 and the lower wall 102;

[0060] Step (7): insert the wall bolts 20 into the lower wall 102 to threadably engage with the bolt fixing seat 6 of the insertable adjustment plate 2, weld and fix the wide plate section 17 to the lower wall 102 at the upper long groove 16, and remove the adjustment device 3;

[0061] Step (8): Weld the upper wall 101 and the lower wall 102 together at the gap between them.

[0062] Step (9): Concrete is injected into the upper wall 101 and the lower wall 102 . The concrete is highly integrated and synergistic with the mortise and tenon piles 14 in the upper wall 101 and the lower wall 102 .

[0063] Embodiment 2

[0064] like Fig.11 , 12 An assembled imitation wall column with mortise and tenon piles without partitions, using two pieces of steel 4 to form an "L"-shaped wall 1, the steel 4 is a cold-bent steel or a hot-rolled steel, the connecting seam between the steels 4 is arranged on the side of the wall 1, and a welding support plate 10 is arranged on the inner side of the connecting seam between the steels 4. The steels 4 are welded and fixed in pairs, and the welding support plate 10 arranged on the inner side of the connecting seam prevents the welding molten iron from flowing out when the welding is melted through.

[0065] like Fig.10 The insertable adjustment plate 2 includes a plate body 5 and a bolt fixing seat 6, wherein the bolt fixing seat 6 is fixed on the plate body 5, and the wall 1 includes an upper wall 101 and a lower wall 102. The plate body 5 is fixed to the lower end of the upper wall 101, and a plurality of insertable adjustment plates 2 are arranged at the lower end of the upper wall 101. The bolt fixing seat 6 end of the insertable adjustment plate 2 is inserted into the lower wall 102, and the lower wall 102 is fixedly connected to the bolt fixing seat 6 by wall bolts 20, and a gap is left between the upper wall 101 and the lower wall 102 for welding;

[0066] like Fig. 9 The adjusting device 3 includes an adjusting bracket 7 and an adjusting support seat 8. The adjusting bracket 7 is temporarily installed at the lower end of the side of the upper wall 101, and the adjusting support seat 8 is hooked at the upper end of the side of the lower wall 102. The adjusting bracket 7 is threaded with an adjusting bolt 9, and the adjusting bolt 9 is supported by the adjusting support seat 8. After the wall 101 and the wall 102 are docked and fixed, they can be removed and reused.

[0067] In summary, the assembled wall column imitation with mortise and tenon piles without partitions and the construction method of the present invention have a transparent wall cavity without partitions, which is convenient for construction and easy to compact. The concrete and steel sections work together, the welding effect between the upper wall and the lower wall is good, the connection strength of the connection parts is high, and the overall structural effect of strong nodes and weak rods is achieved. The inclination of the wall can be adjusted, the verticality of the wall is easy to control, the adjustment is convenient, and the safety is improved. The assembled production method has high production efficiency, batch modular production, and the on-site construction efficiency is improved, which reduces costs.

[0068] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An assembled imitation wall column without partition and with mortise and tenon piles, characterized in that: It comprises a wall (1), an insertable adjustment plate (2), an adjustment device (3), and mortise and tenon piles (14); the wall (1) is composed of a plurality of steel sections (4), and the connecting seams between the steel sections (4) are arranged on the side of the wall (1); The insertable adjustment plate (2) comprises a plate body (5) and a bolt fixing seat (6), wherein the bolt fixing seat (6) is fixed on the plate body (5); the wall (1) comprises an upper wall (101) and a lower wall (102); the plate body (5) is fixed on the lower end of the upper wall (101); a plurality of insertable adjustment plates (2) are arranged at the lower end of the upper wall (101); the bolt fixing seat (6) of the insertable adjustment plate (2) is inserted into the lower wall (102); the lower wall (102) and the bolt fixing seat (6) are fixedly connected by wall bolts (20); and a gap is left between the upper wall (101) and the lower wall (102) for welding; The adjusting device (3) comprises an adjusting bracket (7) and an adjusting support seat (8); the adjusting bracket (7) is fixedly mounted on the lower end of the side of the upper wall (101); the adjusting support seat (8) is mounted on the upper end of the side of the lower wall (102); an adjusting bolt (9) is threadedly engaged on the adjusting bracket (7); and the adjusting bolt (9) is supported against the adjusting support seat (8).

2. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 1, characterized in that: The shapes of the wall (1) formed by the plurality of steel sections (4) include "I" shape, "X" shape, "T" shape and "L" shape.

3. The assembled imitation wall column without partition board and with mortise and tenon piles as claimed in claim 1, characterized in that: A welding support plate (10) is arranged inside the connection seam between the section steels (4).

4. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 3 is characterized in that: The steel section (4) is provided with a connection hole (13), in which a mortise and tenon pile (14) is welded, and the mortise and tenon pile (14) connects and fixes two face-to-face steel sections (4).

5. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 1, characterized in that: The lower end of the upper wall (101) is provided with a plurality of lower end long grooves (15), and the upper end of the lower wall (102) is provided with a plurality of upper end long grooves (16).

6. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 1, characterized in that: The plate body (5) comprises a wide plate section (17) and a narrow plate section (18); the width of the wide plate section (17) is greater than the thickness of the outer wall of the wall (1), and the width of the narrow plate section (18) is less than the thickness of the inner wall of the wall (1).

7. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 6, characterized in that: The wide plate section (17) is inserted into the lower end long groove (15) and the upper end long groove (16) and is welded and fixed to the wall (1).

8. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 1, characterized in that: The adjusting bracket (7) is in a "J" shape as a whole. The lower hook (22) at the lower end of the adjusting bracket (7) hooks and supports the bottom surface of the upper wall (101). The adjusting bracket (7) is fixed to the lower end of the side surface of the upper wall (101) by bolts.

9. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 1, characterized in that: The upper end of the lower wall (102) is provided with steps (21) along the periphery.

10. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 9, characterized in that: The adjustable support seat (8) comprises a vertical plate (11) and a horizontal block (12); the vertical plate (11) and the horizontal block (12) are fixedly connected; the adjustable support seat (8) is generally in the shape of a letter "7"; the horizontal block (12) is located on a step (21) of a lower wall (102); and the vertical plate (11) is located on a side surface of the lower wall (102); the adjustable support seat (8) is hooked on the lower wall (102).

11. The assembled imitation wall column without partition board and with mortise and tenon piles as claimed in claim 1, characterized in that: A guide welding support plate (19) is welded and fixed around the inner wall of the lower end of the upper wall (101); the upper end of the guide welding support plate (19) is welded and fixed to the inner wall of the upper wall (101); and the lower end of the guide welding support plate (19) is bent toward the inside of the wall (1).

12. The assembled imitation wall column with mortise and tenon piles without partitions as claimed in claim 1, characterized in that: Concrete is injected into the upper wall (101) and the lower wall (102).

13. A construction method, applied to the assembled imitation wall column without partition board and with mortise and tenon piles as claimed in any one of claims 1 to 12, characterized in that: The following steps are involved: Step (1): according to the requirements of the shape of the construction wall (1), steel sections (4) of corresponding shapes are manufactured and assembled into the wall (1), and a welding support plate (10) is arranged inside the connection seam between the steel sections (4) to weld and fix the steel sections (4); Step (2): inserting the wide plate section (17) of the insertable adjustment plate (2) into the lower end long groove (15) and welding and fixing it; Step (3): hook the lower hook (22) at the lower end of the adjustment bracket (7) onto the bottom surface of the upper wall (101), and fix the adjustment bracket (7) to the lower end of the side surface of the upper wall (101) by means of bolts; Step (4): hook the adjustable support seat (8) on the step (21) of the lower wall (102), hook the horizontal block (12) of the adjustable support seat (8) on the top surface of the lower wall (102), and the vertical plate (11) is closely attached to the side surface of the lower wall (102); Step (5): dock the upper wall (101) with the lower wall (102), insert the narrow plate section (18) of the insertable adjustment plate (2) into the lower wall (102), insert the wide plate section (17) into the upper long groove (16), and support the adjustment bolt (9) of the adjustment device (3) against the adjustment support seat (8); Step (6): Rotate the adjusting bolt (9) of the adjusting device (3) on the side of the wall (1) to control the distance between the adjusting bracket (7) and the adjusting support seat (8), thereby adjusting the verticality of the side of the upper wall (101) where the adjusting bracket (7) is located, and also adjust the height of the gap between the upper wall (101) and the lower wall (102); Step (7): insert the wall bolts (20) into the lower wall (102) to threadably engage with the bolt fixing seat (6) of the insertable adjustment plate (2), weld and fix the wide plate section (17) to the lower wall (102) at the upper long groove (16), and remove the adjustment device (3); Step (8): Welding the upper wall (101) and the lower wall (102) together at the gap between them; Step (9): injecting concrete into the upper wall (101) and the lower wall (102).

14. The construction method according to claim 13, characterized in that: The step (1) further comprises the steps of opening a connection hole (13) on the steel section (4), inserting a mortise and tenon pile (14) into the connection hole (13), and welding and fixing the steel section (4) and the mortise and tenon pile (14) at the connection hole (13) to connect and fix two face-to-face steel sections (4).

15. The construction method according to claim 13, characterized in that: The step (2) also includes welding and fixing a guide welding support plate (19) around the inner wall at the lower end of the upper wall (101), and welding and fixing the upper end of the guide welding support plate (19) to the inner wall of the upper wall (101).

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