Waterproof structure of wading tower crane foundation and construction method of waterproof structure

Abstract

The invention relates to the technical field of bridge construction, in particular to a waterproof structure of a wading tower crane foundation and a construction method thereof.The waterproof structure comprises two bridge piers, a sealing assembly and a waterproof butt joint assembly, bridge pier bearing platforms are arranged at the lower ends of the two bridge piers, and the tower crane foundation is arranged between the two bridge pier bearing platforms; a tower crane and a fence pre-embedded seat are pre-embedded at the upper end of the tower crane foundation, a water retaining barrel is assembled at the upper end of the tower crane and the fence pre-embedded seat, and the water retaining barrel comprises a plurality of water retaining steel formworks. Quality and safety problems caused by difficult control of welding quality are avoided through an assembled structure and a sealing assembly, then the water retaining steel formwork and the pier are supported by sustaining wall profile steel, the overall rigidity and stability of the waterproof structure are improved, steel cost is reduced, the material pouring rate is high, green and environment-friendly construction can be achieved, and the construction cost is reduced. In addition, the waterproof butt joint assembly can improve the splicing efficiency and the waterproof effect of the cross joint.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, in particular to a waterproof structure of a water-borne tower crane foundation and a construction method thereof. Background Art

[0002] During the construction of the superstructure of bridges across rivers, tower cranes are commonly used lifting equipment. The foundation of a tower crane for a bridge is generally set on a pedestal below the normal water level. Since the construction period of a tower crane generally experiences at least one to two rainy seasons or flood seasons, the tower crane foundation, some standard sections, and bolts below the ground are easily corroded due to long-term immersion in water. This corrosion is difficult to detect and poses a major safety hazard.

[0003] The traditional construction method is to install steel casing at the tower crane foundation for protection. For tower cranes in deep water, multiple sections of steel casing are butt-jointed and welded. However, the verticality and butt welding quality control are difficult, the weld quality requirements are high, the construction is difficult, and the safety risks are high. At the same time, the amount of steel required is large, the project cost is high, and the material recycling rate is low, which is not conducive to green and environmentally friendly construction. Summary of the Invention

[0004] The object of the present invention is to provide a waterproof structure of a water-resistant tower crane foundation and a construction method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a waterproof structure for a water-resistant tower crane foundation, comprising:

[0006] Two bridge piers, each of the two piers having a pier cap provided at its lower end, a tower crane foundation provided between the two pier caps, a tower crane and a pre-buried enclosure seat pre-embedded at the upper end of the tower crane foundation, a water retaining cylinder assembled at the upper end of the tower crane and the pre-buried enclosure seat, and the water retaining cylinder comprising a plurality of water retaining steel templates;

[0007] A sealing assembly is provided on the mating side of two adjacent water-retaining steel templates, and the sealing assembly includes a plurality of sealing strips;

[0008] A waterproof butt joint assembly is provided at the cross joint position of the water retaining steel template. The waterproof butt joint assembly comprises a butt joint combination plate, two seam sealing plates and four assembly boxes.

[0009] Preferably, vertical flange plates and horizontal flange plates are respectively provided on both sides and upper and lower ends of the water retaining steel formwork, and four adjacent water retaining steel formworks are assembled and fixed by bolts through the vertical flange plates and the horizontal flange plates.

[0010] Preferably, the lower end horizontal flange plate of the water retaining steel formwork is assembled and fixed with upper end bolts of the tower crane and the embedded seat of the enclosure, and the upper end of the tower crane foundation covers the horizontal flange plate and the tower crane and the embedded seat of the enclosure with encapsulating concrete.

[0011] Preferably, an embedding groove is provided on opposite sides of the plurality of vertical flange plates and the horizontal flange plates, and the plurality of sealing strips are respectively inserted into the plurality of embedding grooves.

[0012] Preferably, one side of the water retaining steel formwork is provided with a buttress steel through bolt connection, the side of the pier close to the buttress steel is pre-embedded with supporting embedded parts, and the end of the buttress steel away from the water retaining steel formwork is fixedly connected to the supporting embedded parts.

[0013] Preferably, the water retaining steel formwork is provided with a plurality of reinforcing ribs.

[0014] Preferably, several of the assembly boxes are respectively arranged on the four sides of the water-retaining steel formwork. When the four water-retaining steel formwork are combined and assembled, several assembly boxes will form two positioning sealing boxes. A sealing groove is opened in the center of the positioning sealing box, and the docking combination plate is vertically inserted into the sealing groove. One side of the four assembly boxes is connected to the sealing groove and a pulling positioning groove is opened. Four pulling positioning blocks are symmetrically provided on the four sides of the docking combination plate. The four pulling positioning blocks are respectively inserted into the pulling positioning grooves of the four assembly boxes, and the side surface of the pulling positioning block inserted into the pulling positioning groove is an inclined surface.

[0015] Preferably, a through-groove is provided on the inner side of the water retaining cylinder composed of the water retaining steel formwork in the sealing groove, an adjustment seat is provided through the center of the docking combination plate, two assembly bolts are respectively provided on both sides of the docking combination plate, one side of the two assembly bolts are respectively inserted into the two sides of the adjustment seat, and the docking combination plate is provided with guide placement grooves on both sides of the adjustment seat, the two joint sealing plates are respectively movably inserted in the two guide placement grooves, and a combination groove is provided on both sides of the adjustment seat, a screw protrusion is provided in the center of one side of the joint sealing plate, and the two screw protrusions are respectively movably inserted in the two grooves, a control screw is provided through the center of the adjustment seat, and the control screw is provided with a self-rotation constraint block in the center of the adjustment seat, the two joint sealing plates are respectively threadedly sleeved with the control screw through the two sides of the adjustment seat through the screw protrusions, and one side of the control screw is provided with a through-groove.

[0016] Preferably, the side of the joint sealing plate away from the butt joint composite plate is provided with a sealing sheet, the threads of the control screws inserted into the two joint sealing plates are arranged oppositely, and the area of ​​the sealing sheet is larger than the cross-sectional area of ​​the unassembled position of the plurality of sealing strips.

[0017] A construction method for a waterproof structure of a water-resistant tower crane foundation comprises the following steps:

[0018] Step 1: When pouring the tower crane foundation, take the tower crane as the center and embed the tower crane and enclosure embedded seats in the tower crane foundation. At the same time, the embedded bolts of the tower crane and enclosure embedded seats must be embedded to a depth of no less than 30cm.

[0019] When the water retaining steel formwork is assembled, the water retaining steel formwork is assembled by bolting the horizontal flange plate and the vertical flange plate. When assembling, the sealing strip is filled in the fitting position of the adjacent water retaining steel formwork, and then the water retaining steel formwork is bolted to the tower crane and the embedded seat of the enclosure. When assembling the upper and left and right water retaining steel formwork, the butt joint combination plate can be smashed into the two adjacent assembly boxes, and the two assembled water retaining steel formworks on the left and right are pulled and positioned to facilitate the subsequent bolting of the vertical flange plates. When the upper water retaining steel formwork is built, the assembly box of the upper water retaining steel formwork can be docked with the pulling positioning block of the butt joint combination plate. When the upper water retaining steel formwork drops with gravity, the two adjacent water retaining steel formworks above and below are quickly positioned, which is convenient for the bolting and fixing connection of the two adjacent horizontal flange plates. Then, by rotating the control screw, the two joint sealing plates are respectively pressed and sealed on the two sides in the sealing groove, and the assembly quantity and height are adjusted at the top according to the water depth.

[0020] Step 3: After the assembly of the water-retaining steel formwork is completed, the support wall steel is constructed to ensure that the water retaining cylinder is stable after the water-retaining steel formwork is constructed. Then, pour 20cm of encapsulating concrete at the connection position of the water-retaining steel formwork, the tower crane and the embedded seat of the enclosure, and wait for the subsequent tower crane to be erected.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] For tower cranes in deep water areas, this device can use the steel formwork left over from the bridge piers to fence the tower crane's gears. The assembled structure and sealing components can avoid quality and safety issues caused by difficult-to-control welding quality. The supporting wall steel then supports the water-retaining steel formwork and the bridge piers, thereby improving the overall rigidity and stability of the waterproof structure, reducing steel costs, and achieving a high material utilization rate, thereby achieving green and environmentally friendly construction. In addition, the waterproof docking components can improve the efficiency of assembly and the waterproof effect of the cross joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the tower crane and the embedded seat of the enclosure of the present invention;

[0025] Figure 3 This is a schematic diagram of the assembly structure of the water retaining steel template of the present invention;

[0026] Figure 4 For the present invention Figure 3 Schematic diagram of part A;

[0027] Figure 5 This is a side sectional view of the structure inside the sealing groove of the butt-jointed composite panel of the present invention;

[0028] Figure 6 For the present invention Figure 5 Schematic diagram of part B;

[0029] Figure 7 This is a schematic diagram of the assembly structure of the assembly box of the present invention;

[0030] Figure 8 For the present invention Figure 7 Schematic diagram of the C part;

[0031] Figure 9 It is a structural schematic diagram of the butt-jointed composite plate of the present invention.

[0032] In the figure: pier cap 1, pier 2, tower crane foundation 3, tower crane and enclosure embedded seat 4, water-retaining steel formwork 5, horizontal flange plate 6, vertical flange plate 7, sealing strip 8, wall steel 9, encapsulated concrete 10, assembly box 11, docking combination plate 12, tension positioning groove 13, tension positioning block 14, adjustment seat 15, assembly bolt 16, control screw 17, rotation constraint block 18, guide placement groove 19, joint sealing plate 20, screw protrusion 21, through-groove 22, sealing sheet 23, reinforcement rib 24, sealing groove 25. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Please see the attached Figure 1-9 , this application provides the following technical solutions.

[0035] Embodiment 1: A waterproof structure for a water-resistant tower crane foundation, characterized by comprising:

[0036] Two piers 2, the lower ends of the two piers 2 are provided with pier caps 1, a tower crane foundation 3 is provided between the two pier caps 1, the upper end of the tower crane foundation 3 is pre-buried with a tower crane and enclosure embedded seat 4, the upper end of the tower crane and enclosure embedded seat 4 is assembled with a water retaining cylinder, the water retaining cylinder includes a number of water retaining steel templates 5, the two sides and the upper and lower ends of the water retaining steel template 5 are respectively provided with vertical flange plates 7 and horizontal flange plates 6, four adjacent water retaining steel templates 5 are bolted together and fixed by the vertical flange plates 7 and the horizontal flange plates 6, the lower end of the water retaining steel template 5 The end horizontal flange plate 6 is assembled and fixed with the upper end bolts of the tower crane and the embedded seat 4 of the enclosure. The upper end of the tower crane foundation 3 is covered with the horizontal flange plate 6 and the tower crane and the embedded seat 4 of the enclosure and is provided with encapsulated concrete 10. A number of reinforcing ribs 24 are provided on the water-retaining steel formwork 5. The tower crane and the embedded seat 4 of the enclosure are used for the later tower crane construction and the assembly and positioning of the water-retaining steel formwork 5. The reinforcing ribs 24 can improve the supporting strength of the water-retaining steel formwork 5. In addition, the water-retaining steel formwork 5 can be the used steel formwork of the pier 2, which can achieve the effect of cost reduction and green environmental protection.

[0037] The sealing assembly is arranged on the mating side of two adjacent water-retaining steel formworks 5. The sealing assembly includes a plurality of sealing strips 8. The opposite sides of a plurality of vertical flange plates 7 and a horizontal flange plate 6 are provided with embedding grooves. The plurality of sealing strips 8 are respectively inserted into the plurality of embedding grooves to seal the joints when the plurality of water-retaining steel formworks 5 are assembled.

[0038] One side of the water-retaining steel formwork 5 is connected with a supporting wall steel 9 by bolts, and the side of the pier 2 close to the supporting wall steel 9 is pre-embedded with supporting embedded parts. The end of the supporting wall steel 9 away from the water-retaining steel formwork 5 is fixedly connected to the supporting embedded parts. The supporting embedded parts are pre-embedded on the pier 2 in advance. After the water retaining cylinder constructed by the water-retaining steel formwork 5 is assembled, it is supported laterally, and the pier 2 is used as a support point to ensure that the water retaining cylinder composed of the water-retaining steel formwork 5 is stable and reliable.

[0039] Example 2: On the basis of Example 1, a waterproof docking assembly is provided at the cross joint position of the water-retaining steel template 5. The waterproof docking assembly includes a docking combination plate 12, two seam sealing plates 20 and four assembly boxes 11. Several assembly boxes 11 are respectively provided on the four sides of the splicing of the water-retaining steel template 5. When the four water-retaining steel templates 5 are assembled, several assembly boxes 11 will form two positioning sealing boxes. A sealing groove 25 is provided in the center of the positioning sealing box. The docking combination plate 12 is vertically inserted into the sealing groove 25. The four assembly boxes 11 are respectively provided on the four sides of the splicing of the water-retaining steel template 5. One side of the box 11 is connected to the sealing groove 25 and is provided with a pulling positioning groove 13. Four pulling positioning blocks 14 are symmetrically provided on the four sides of the docking combination plate 12. The four pulling positioning blocks 14 are respectively inserted into the pulling positioning grooves 13 of the four assembly boxes 11, and the side surface of the pulling positioning block 14 inserted into the pulling positioning groove 13 is an inclined surface. When the docking combination plate 12 is connected to the positioning sealing box composed of the water-retaining steel formwork 5, the two adjacent water-retaining steel formworks 5 can be pulled in the center through the inclined surface, while ensuring that the water-retaining steel formworks 5 are assembled stably.

[0040] The sealing groove 25 runs through the inner side of the water retaining cylinder composed of the water retaining steel template 5 and is provided with a through groove 22. The center of the docking composite plate 12 is penetrated and plugged with an adjustment seat 15. Two assembly bolts 16 are respectively inserted on both sides of the docking composite plate 12. One side of the two assembly bolts 16 are respectively plugged on both sides of the adjustment seat 15. The docking composite plate 12 is located on both sides of the adjustment seat 15 and is provided with a guide placement groove 19. The two joint sealing plates 20 are respectively movably plugged in the two guide placement grooves 19. Both sides of the adjustment seat 15 are provided with a combined groove. The center of one side of the joint sealing plate 20 is provided with a screw protrusion 21. The two screw protrusions 21 are respectively movably plugged in the two grooves. The center of the adjustment seat 15 is penetrated and plugged with a control screw 17. The control screw 17 is located at the adjustment A rotation constraint block 18 is provided in the center of the joint seat 15, and two joint sealing plates 20 are respectively threadedly connected to the control screw 17 through the screw protrusions 21 and pass through the two sides of the adjustment seat 15, and one side of the control screw 17 passes through the groove 22. The joint sealing plate 20 is provided with a sealing piece 23 on the side away from the docking combination plate 12. The control screw 17 is inserted into the two joint sealing plates 20 with the threads arranged oppositely, and the area of ​​the sealing piece 23 is larger than the cross-sectional area of ​​the unassembled position of several sealing strips 8. When the joint sealing plate 20 pushes the sealing piece 23 to abut against the inner wall of the sealing groove 25, the cross seam area formed by the water-retaining steel formwork 5 is covered to avoid the waterproof effect when the sealing strip 8 cannot completely fill the cross seam when the water-retaining steel formwork 5 is assembled.

[0041] A construction method for a waterproof structure of a water-resistant tower crane foundation comprises the following steps:

[0042] Step 1: When pouring the tower crane foundation, with the tower crane as the center, embed the tower crane and enclosure embedded seat 4 in the position of the tower crane foundation 3. At the same time, the embedded depth of the embedded bolts of the tower crane and enclosure embedded seat 4 is not less than 30 cm;

[0043] Step 2: Then assemble the water retaining steel formwork 5 by bolting it together through the horizontal flange plate 6 and the vertical flange plate 7. When assembling, fill the sealing strip 8 in the adjacent fitting position of the water retaining steel formwork 5, and then bolt the water retaining steel formwork 5 to the tower crane and the embedded seat 4 of the enclosure. When assembling the upper and lower and left and right water retaining steel formworks 5, the docking combination plate 12 can be smashed into the two adjacent assembly boxes 11, and the two left and right assembled water retaining steel formworks 5 can be pulled and positioned to facilitate the subsequent bolting of the vertical flange plate 7. When the upper water retaining steel formwork 5 is built, the assembly box 11 of the upper water retaining steel formwork 5 can be connected with the The pulling positioning blocks 14 of the docking combination plate 12 are docked. When the upper water retaining steel formwork 5 drops with gravity, the two upper and lower adjacent water retaining steel formworks 5 are quickly positioned, which facilitates the bolted connection of the two adjacent horizontal flange plates 6. Then, by rotating the control screw 17, the two joint sealing plates 20 are respectively pressed and sealed on the two side surfaces in the sealing groove 25, and the cross seam area formed by the water retaining steel formwork 5 is covered. This prevents the water retaining steel formwork 5 from being unable to completely fill the waterproof effect of the cross seam when the sealing strip 8 is assembled. The number and height of the assembly are adjusted at the top according to the water depth.

[0044] Step 3: After the assembly of the water-retaining steel formwork 5 is completed, the support wall steel 9 is constructed to ensure that the water retaining cylinder is stable after the water-retaining steel formwork 5 is constructed. Then, 20 cm of encapsulating concrete 10 is poured at the connection position of the water-retaining steel formwork 5, the tower crane and the embedded seat 4 of the enclosure, and then wait for the subsequent tower crane to be erected.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof structure for a water-resistant tower crane foundation, characterized in that: include: Two bridge piers (2), the lower ends of the two bridge piers (2) are provided with bridge pier caps (1), a tower crane foundation (3) is provided between the two bridge pier caps (1), the upper end of the tower crane foundation (3) is pre-buried with a tower crane and enclosure pre-buried seat (4), the upper ends of the tower crane and enclosure pre-buried seat (4) are assembled with a water retaining cylinder, and the water retaining cylinder includes a plurality of water retaining steel templates (5); A sealing assembly, the sealing assembly being arranged on the mating side of two adjacent water-retaining steel templates (5), the sealing assembly comprising a plurality of sealing strips (8); A waterproof docking assembly is provided at the cross joint position of a water-retaining steel template (5). The waterproof docking assembly comprises a docking combination plate (12), two joint sealing plates (20) and four assembly boxes (11).

2. The waterproof structure of a water-resistant tower crane foundation according to claim 1, characterized in that: Vertical flange plates (7) and horizontal flange plates (6) are respectively provided on both sides and upper and lower ends of the water retaining steel formwork (5), and four adjacent water retaining steel formworks (5) are assembled and fixed by bolts through the vertical flange plates (7) and the horizontal flange plates (6).

3. The waterproof structure of a water-resistant tower crane foundation according to claim 2, characterized in that: The lower end horizontal flange plate (6) of the water retaining steel template (5) is assembled and fixed with bolts on the upper end of the tower crane and the embedded seat of the enclosure (4); the upper end of the tower crane foundation (3) covers the horizontal flange plate (6) and the tower crane and the embedded seat of the enclosure (4) and is provided with encapsulating concrete (10).

4. The waterproof structure of a water-resistant tower crane foundation according to claim 3, characterized in that: An embedding groove is provided on the opposite side of the plurality of vertical flange plates (7) and the horizontal flange plates (6), and a plurality of sealing strips (8) are respectively inserted into the plurality of embedding grooves.

5. The waterproof structure of a water-resistant tower crane foundation according to claim 4, characterized in that: One side of the water retaining steel formwork (5) is provided with a supporting wall steel (9) through bolt connection, and the side of the pier (2) close to the supporting wall steel (9) is pre-embedded with a supporting embedded part, and the end of the supporting wall steel (9) away from the water retaining steel formwork (5) is fixedly connected to the supporting embedded part.

6. The waterproof structure of a water-resistant tower crane foundation according to claim 5, characterized in that: The water retaining steel template (5) is provided with a plurality of reinforcing ribs (24).

7. The waterproof structure of a water-resistant tower crane foundation according to claim 6, characterized in that: The plurality of assembly boxes (11) are respectively arranged on the four sides of the splicing of the water-retaining steel templates (5). When the four water-retaining steel templates (5) are assembled, the plurality of assembly boxes (11) will form two positioning sealing boxes. A sealing groove (25) is provided in the center of the positioning sealing box. The docking combination plate (12) is vertically inserted into the sealing groove (25). One side of the four assembly boxes (11) is connected to the sealing groove (25) and is provided with a pulling positioning groove (13). Four pulling positioning blocks (14) are symmetrically provided on the four sides of the docking combination plate (12). The four pulling positioning blocks (14) are respectively inserted into the pulling positioning grooves (13) of the four assembly boxes (11), and the side surface of the pulling positioning block (14) inserted into the pulling positioning groove (13) is an inclined surface.

8. The waterproof structure of a water-resistant tower crane foundation according to claim 7, characterized in that: The sealing groove (25) is provided with a through groove (22) on the inner side of the water retaining cylinder formed by the water retaining steel template (5), and an adjustment seat (15) is inserted and inserted through the center of the docking composite plate (12). Two assembly bolts (16) are respectively inserted on both sides of the docking composite plate (12), and one side of the two assembly bolts (16) is respectively inserted on both sides of the adjustment seat (15). Guide placement grooves (19) are provided on both sides of the docking composite plate (12) located at the adjustment seat (15), and two joint sealing plates (20) are respectively movably inserted in the two guide placement grooves (19). The adjustment seat ( The two sides of the joint sealing plate (20) are provided with combined grooves, the center of one side of the joint sealing plate (20) is provided with a screw-connected protrusion (21), and the two screw-connected protrusions (21) are respectively movably inserted into the two grooves. The center of the adjustment seat (15) is penetrated and inserted with a control screw (17), and the control screw (17) is located in the center of the adjustment seat (15) and is provided with a self-rotation constraint block (18). The two joint sealing plates (20) are respectively threadedly sleeved with the control screw (17) through the screw-connected protrusions (21) and penetrate the two sides of the adjustment seat (15), and one side of the control screw (17) is penetrated and provided with a groove (22).

9. The waterproof structure of a water-resistant tower crane foundation according to claim 8, characterized in that: The side of the joint sealing plate (20) away from the butted composite plate (12) is provided with a sealing sheet (23), the control screw (17) is inserted into the threads of the two joint sealing plates (20) and the threads are arranged oppositely, and the area of ​​the sealing sheet (23) is larger than the cross-sectional area of ​​the unassembled position of the plurality of sealing strips (8).

10. A construction method for a waterproof structure of a water-resistant tower crane foundation according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: When the tower crane foundation is being poured, the tower crane and the enclosure embedded seat (4) are embedded in the position of the tower crane foundation (3) with the tower crane as the center, and the embedded bolts of the tower crane and the enclosure embedded seat (4) are embedded to a depth of not less than 30 cm; Step 2: Then assemble the water retaining steel template (5) by bolting it together through the horizontal flange plate (6) and the vertical flange plate (7). When assembling, fill the sealing strip (8) in the adjacent fitting position of the water retaining steel template (5), and then fix the water retaining steel template (5) with the tower crane and the embedded seat (4) of the enclosure by bolts. When assembling the upper and lower and left and right water retaining steel templates (5), the docking combination plate (12) can be smashed into the two adjacent assembly boxes (11), and the two left and right assembled water retaining steel templates (5) are pulled and positioned to facilitate the subsequent bolting of the vertical flange plate (7). When the upper water retaining steel template (5) is built, the assembly box (11) of the upper water retaining steel template (5) can be docked with the tension positioning block (14) of the docking combination plate (12). When the upper water retaining steel template (5) falls with gravity, the two upper and lower adjacent water retaining steel templates (5) are quickly positioned, which facilitates the bolted connection of the two adjacent horizontal flange plates (6). Then, by rotating the control screw (17), the two joint sealing plates (20) are respectively pressed and sealed on the two side surfaces in the sealing groove (25). The assembly quantity and height are adjusted at the top according to the water depth. Step 3: After the assembly of the water retaining steel formwork (5) is completed, the support wall steel (9) is constructed to ensure that the water retaining tube is stable after the water retaining steel formwork (5) is constructed, and then 20cm of encapsulating concrete (10) is poured at the connection position of the water retaining steel formwork (5) and the tower crane and the enclosure embedded seat (4), and then wait for the subsequent tower crane to be erected.

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