Single steel plate-reinforced concrete well wall with built-in hollow steel pipe

Abstract

The single steel plate-reinforced concrete well wall with the built-in hollow steel pipes comprises a plurality of well wall assemblies which are arranged in an overlapped mode in the axial direction, and each well wall assembly comprises a steel plate cylinder arranged on the inner surface of the well wall, the hollow square steel pipes arranged in the well wall and perforated rib plates arranged between the adjacent hollow square steel pipes. The reinforcement cage is arranged on the outer side of the hollow square steel tube; and the precast concrete is poured on the outer side of the steel plate cylinder. The annular steel pipe is arranged on the inner side of the well wall, the overall coordinated stress effect and bearing capacity of the well wall structure are improved, and compared with a traditional single steel plate-concrete well wall, the thickness of the well wall can be greatly reduced, and cost is reduced. The inner side of the well wall is connected through steel pipe mortises and tenons, bearing capacity and reliability are improved, the outer side of the well wall is connected through bent bolts, the process is simple, and quality is controllable. The device is reasonable in structure, easy and convenient to construct, capable of being used for construction of various mines and wide in engineering application prospect.

Description

Technical Field

[0001] The invention belongs to the technical field of underground construction, and particularly relates to a single steel plate-reinforced concrete shaft wall with built-in hollow steel pipes. Background Art

[0002] With the increasing demand for the depth of coal resource mining, the difficulty of mine construction is also increasing. Some newly built mines have the characteristics of deep shafts and large diameters. A reasonable shaft wall design plays a crucial role in shortening the construction period of mine construction, saving project costs, and ensuring the safe production of mines.

[0003] At present, most of the shaft walls used in engineering applications adopt a single steel plate-reinforced concrete shaft wall structure, which has a large bearing capacity and a wide range of applications, but there are problems such as too thick shaft wall size and high material costs. Vertical connections often use flange connections, which have problems such as a large amount of welding and difficult quality control during construction. Therefore, there is an urgent need to develop a shaft wall structure with reasonable structure, high economy, and simple construction. Summary of the Invention

[0004] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a single steel plate-reinforced concrete shaft wall with built-in hollow steel pipes, so as to solve the problems of too thick shaft wall size, high material costs, and insufficient connection stability of the existing single steel plate-reinforced concrete shaft wall. The present invention has the advantages of reasonable structure, high economy, and simple construction, can be used in various mine constructions, and has broad engineering application prospects.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A single steel plate-reinforced concrete shaft wall with built-in hollow steel pipes, the shaft wall includes a plurality of shaft wall components stacked along the axial direction, and the shaft wall components include: a steel plate cylinder arranged on the inner surface of the shaft wall, a hollow square steel pipe arranged inside the shaft wall, a plurality of perforated rib plates arranged between adjacent hollow square steel pipes, a steel reinforcement cage arranged outside the hollow square steel pipe, and precast concrete for pouring the hollow square steel pipe, the perforated rib plates and the steel reinforcement cage into one body outside the steel plate cylinder; wherein each of the hollow square steel pipes is arranged around the outside of the steel plate cylinder and is arranged at equal intervals along the axial direction of the shaft wall.

[0007] In one embodiment, the hollow square steel pipe is welded by a rolled inner steel plate, a rolled outer steel plate and two identical end steel plates, and the steel plate cylinder is welded by steel plate cylinder units arranged at equal intervals along the axial direction of the shaft wall component and the rolled inner steel plate in the hollow square steel pipe.

[0008] In one embodiment, the perforated rib plates are uniformly arranged in the circumferential direction of the shaft wall assembly, and the surfaces of the perforated rib plates are vertical. A reserved hole is provided at the central position thereof, and the shape of the reserved hole is circular, rectangular or polygonal.

[0009] In one embodiment, the steel reinforcement cage includes circumferential steel bars arranged at equal intervals in the axial direction of the shaft wall assembly, and vertical steel bars uniformly arranged in the circumferential direction of the shaft wall assembly.

[0010] In one embodiment, the precast concrete is ordinary concrete, high-strength concrete, self-compacting concrete or UHPC.

[0011] In one embodiment, adjacent shaft wall assemblies are assembled through connection nodes, and the connection nodes include: a steel pipe tenon and mortise connection node arranged on the inner side of the shaft wall, and a bent bolt connection node arranged on the outer side of the shaft wall.

[0012] In one embodiment, the steel pipe tenon and mortise connection node includes: a concave tenon steel pipe, a convex tenon steel pipe, grouting material and a PBL connector welded to the outer wall of the convex tenon steel pipe; the convex tenon steel pipe and the concave tenon steel pipe are respectively welded to the upper and lower end faces of the hollow square steel pipe, and the convex tenon steel pipe and the concave tenon steel pipe are uniformly arranged in the circumferential direction of the shaft wall assembly.

[0013] In one embodiment, the wall thickness of the concave tenon steel pipe is the same as that of the convex tenon steel pipe, and the inner diameter of the concave tenon steel pipe is greater than the outer diameter of the convex tenon steel pipe.

[0014] In one embodiment, the bent bolt connection node includes a reserved bolt groove provided on the outer wall of the precast concrete for vertical connection, and the vertical connection of adjacent shaft wall assemblies is completed by passing a bent bolt through the bolt hole in the reserved bolt groove.

[0015] In one embodiment, the diameter of the shaft wall is not less than 8m, the thickness of the shaft wall is not less than 300mm and not more than 500mm. Both the steel plate cylinder and the hollow square steel pipe are made of ordinary high-strength steel. The thickness of the steel plate cylinder is not less than 10mm and not more than 20mm, and the thickness of the hollow square steel pipe is not less than 5mm and not more than 10mm.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1) Convenient construction

[0018] The structural form of the present invention is simple. Combining the characteristics of the steel-concrete composite structure and the prefabricated structure, a circumferential hollow square steel pipe is arranged on the inner side of the shaft wall, reducing the requirement for the bearing capacity of the steel cylinder, and reducing the thickness and processing difficulty of the steel cylinder. The vertical connection node has a simple process, less welding quantity and convenient construction.

[0019] 2) Performance improvement

[0020] The design of the present invention is flexible, the force transmission is clear, and the structural design is reasonable. A hollow square steel pipe is arranged on the inner side of the shaft wall to improve the overall coordinated stress effect and bearing capacity of the shaft wall structure. The perforated rib plate enhances the combined action of steel and concrete. The vertical connection node enables the stress balance at the joint part of the shaft wall, and improves the bearing capacity and reliability of the connection node.

[0021] 3) Economic benefits

[0022] The cost of the present invention is controllable. The steel cylinder serves as both a stress-bearing element and a casting formwork, and the hollow steel pipe can effectively reduce the self-weight of the structure and improve the hoisting and splicing efficiency. Compared with the traditional single steel plate-concrete shaft wall, the thickness of the shaft wall can be significantly reduced, the cost can be reduced, and the construction period can be shortened, having good economic benefits.

[0023] Generally speaking, the present invention gives full play to the advantages of the steel-concrete composite structure and the prefabricated structure. A circumferential steel pipe is arranged on the inner side of the shaft wall to improve the overall coordinated stress effect and bearing capacity of the shaft wall structure, and the perforated rib plate enhances the combined action of steel and concrete. Compared with the traditional single steel plate-concrete shaft wall, the thickness of the shaft wall can be significantly reduced, and the cost can be reduced. The inner side of the shaft wall adopts a steel pipe tenon and mortise connection to improve the bearing capacity and reliability, and the outer side of the shaft wall adopts a bent bolt connection, with simple technology and controllable quality. The structure of the present invention is reasonable and the construction is simple, and it can be used for the construction of various mines, having broad engineering application prospects. Brief description of the drawings

[0024] Figure 1 is the overall schematic diagram of a single steel plate-reinforced concrete shaft wall with an internal hollow steel pipe of the present invention.

[0025] Figure 2 is the cross-sectional schematic diagram of a single steel plate-reinforced concrete shaft wall with an internal hollow steel pipe of the present invention.

[0026] Figure 3 is the schematic diagram of the structure of the shaft wall assembly in the present invention.

[0027] Figure 4 is the cross-sectional schematic diagram of the connection node in the present invention.

[0028] Figure 5 is the welding schematic diagram of the concave tenon steel pipe in the present invention.

[0029] Figure 6 is the welding schematic diagram of the convex tenon steel pipe in the present invention.

[0030] Figure 7 is the connection schematic diagram of the concave tenon steel pipe and the convex tenon steel pipe in the present invention.

[0031] Figure 8 is the overall schematic diagram of the hollow square steel pipe in the present invention.

[0032] Figure 9 Schematic diagram of the welding of the hollow square steel pipe, steel plate cylinder and perforated rib plate in the present invention.

[0033] Legend: 1 - shaft wall assembly; 2 - steel plate cylinder; 21 - steel plate cylinder unit; 3 - hollow square steel pipe; 31 - rolled inner steel plate; 32 - rolled outer steel plate; 33 - arc-shaped steel plate; 4 - perforated rib plate; 41 - reserved hole; 5 - steel reinforcement cage; 51 - circumferential steel bar; 52 - vertical steel bar; 6 - precast concrete; 7 - steel pipe tenon and mortise connection node; 8 - bent bolt connection node; 9 - concave tenon steel pipe; 10 - convex tenon steel pipe; 11 - grouting material; 12 - PBL connector; 13 - reserved bolt groove; 14 - bent bolt. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Generally, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0036] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0038] Refer to Figure 1 As shown, the present invention is a single steel plate - reinforced concrete shaft wall with an internal hollow steel pipe. The shaft wall includes a plurality of shaft wall assemblies 1, and each shaft wall assembly 1 is generally cylindrical and is stacked along the axial direction.

[0039] Refer to Figure 2 、 Figure 3As shown in the figure, the shaft wall assembly 1 of the present invention mainly includes a steel plate cylinder 2, a hollow square steel pipe 3, an opening rib plate 4, a steel reinforcement cage 5, precast concrete 6, etc. Among them, the steel plate cylinder 2 is cylindrical and can be made of thin steel plates. It is arranged on the inner surface of the shaft wall, that is, as the inner surface of the shaft wall. The hollow square steel pipe 3 is a circular steel pipe with a rectangular cross-section, preferably square. The axial height of the hollow square steel pipe 3 is much smaller than the axial height of the steel plate cylinder 2, and its inner diameter is equal to or slightly smaller than the outer diameter of the steel plate cylinder 2. It is wrapped around the outside of the steel plate cylinder 2 and is coaxial with the steel plate cylinder 2. In the present invention, multiple hollow square steel pipes 3 can be wrapped around the outside of one steel plate cylinder 2. In a single steel plate cylinder 2 or the entire shaft wall structure, each hollow square steel pipe 3 is preferably arranged at equal intervals along the axial direction of the shaft wall.

[0040] The opening rib plate 4 is made of steel plate or other materials with appropriate plasticity and rigidity, and each opening rib plate 4 is distributed vertically. In the circumferential direction, multiple opening rib plates 4 are arranged around the outside of the steel plate cylinder 2 and are preferably arranged at equal intervals. In the axial direction, the opening rib plate 4 is arranged between the axially adjacent hollow square steel pipes 3. The inner side of the opening rib plate 4 is the side facing the axial direction of the shaft wall, and there is a certain gap between its inner side and the outer side of the steel plate cylinder 2.

[0041] The steel reinforcement cage 5 is arranged outside the hollow square steel pipe 3, and correspondingly, it is also arranged outside the opening rib plate 4, and there is a certain gap between it and the outer side of the opening rib plate 4. The precast concrete 6 then pours the remaining components such as the hollow square steel pipe 3, the opening rib plate 4, and the steel reinforcement cage 5 together on the outside of the steel plate cylinder 2 to form the concrete outer layer of the shaft wall.

[0042] According to the above structure, since the present invention is provided with a plurality of circumferential hollow square steel pipes distributed axially outside the steel plate cylinder 2, it can improve the overall coordinated stress effect and bearing capacity of the shaft wall structure, thereby reducing the requirement for the bearing capacity of the steel plate cylinder 2 itself, and further reducing the thickness and processing difficulty of the steel plate cylinder 2. And because the opening rib plate 4 is arranged between adjacent hollow square steel pipes 3, it can enhance the synergistic effect between the steel component and the concrete part, and further play a role in reducing the requirement for the bearing capacity of the steel plate cylinder 2 itself.

[0043] In a further embodiment of the present invention, the axially adjacent shaft wall assemblies 1 are assembled through connection nodes. Refer to Figure 4 As shown in the figure, a form of connection node includes a steel pipe mortise and tenon connection node 7 and a bent bolt connection node 8.

[0044] Among them, the steel pipe tenon-mortise connection node 7 is arranged on the inner side of the shaft wall, specifically, it can be arranged on the axial end faces of two hollow square steel pipes 3 at the axial end of the steel plate cylinder 2. It mainly includes a concave tenon steel pipe 9, a convex tenon steel pipe 10, grouting material 11 and a PBL connector 12. Among them, the convex tenon steel pipe 10 and the concave tenon steel pipe 9 are respectively welded to the upper end face and the lower end face of the hollow square steel pipe 3, or respectively welded to the lower end face and the upper end face of the hollow square steel pipe 3. Refer to Figure 5 and Figure 6 As shown, it shows that two hollow square steel pipes 3 are respectively arranged at both ends of the steel plate cylinder 2. The convex tenon steel pipe 10 is welded to the lower end face of the lower hollow square steel pipe 3, and the concave tenon steel pipe 9 is welded to the upper end face of the upper hollow square steel pipe 3. The convex tenon steel pipe 10 and the concave tenon steel pipe 9 correspond one by one and are evenly arranged along the circumferential direction of the shaft wall assembly 1. The concave tenon steel pipe 9 and the convex tenon steel pipe 10 are preferably of the same wall thickness, and the inner diameter of the concave tenon steel pipe 9 needs to be larger than the outer diameter of the convex tenon steel pipe 10, and the size selection of the two should enable the convex tenon steel pipe 10 to be inserted into the concave tenon steel pipe 9 to form a firm tenon-mortise connection.

[0045] As Figure 7 shown, the PBL connector 12 is welded to the outer wall of the convex tenon steel pipe 10, specifically, it is welded to the circumference of its end to strengthen the fastening degree of the tenon-mortise connection. After the insertion of the convex tenon steel pipe 10 and the concave tenon steel pipe 9 is completed, the grouting material 11 is poured to solidify the tenon-mortise structure.

[0046] The bent bolt connection node 8 is arranged on the outer side of the shaft wall, for example, it can be arranged in the precast concrete 6. Specifically, it includes a reserved bolt groove 13 in the precast concrete 6. The reserved bolt groove 13 penetrates through the end face and the outer side face of the shaft wall, and its purpose is to set a bent bolt hole. When the axially adjacent shaft wall assemblies 1 are assembled, the bent bolt hole can supply the bent bolt 14 to pass through the two shaft wall assemblies 1 to vertically connect the two. Finally, the two ends of the bent bolt 14 are respectively left on the outer side faces of the two shaft wall assemblies 1 and are obviously located in the reserved bolt groove 13.

[0047] The present invention adopts a vertical connection node, which can reduce the workload, make the stress at the joint part of the shaft wall balanced, and improve the bearing capacity and reliability of the connection node. The steel pipe tenon-mortise connection node 7 has high strength and large stiffness, effectively solving the problems such as poor tensile strength and easy to be pulled apart in the traditional flange weld connection of the shaft wall. The combination of the steel pipe tenon-mortise connection node 7 and the bent bolt connection node 8 forms a double connection path, making the internal and external forces of the shaft wall uniform, and improving the tensile strength and safety redundancy of the vertical connection of the shaft wall. Through rational design, it can ensure the equal-strength design of the shaft wall connection and the shaft wall assembly, and improve the reliability and stability of the connection.

[0048] Accordingly, the present invention can achieve a well wall thickness in the range of 300 mm to 500 mm when the well wall diameter is not less than 8 m, which is significantly thinner than that of the existing well wall. Both the steel plate cylinder 2 and the hollow square steel pipe 3 can be made of ordinary high-strength steel. The thickness range of the steel plate cylinder 2 is 10 mm to 20 mm, and the thickness range of the hollow square steel pipe 3 is 5 mm to 10 mm. Not only is the thickness not high, but the material requirements are also lower, thus reducing costs to a certain extent.

[0049] In a further embodiment of the present invention, referring to Figure 8 and Figure 9 as shown, the hollow square steel pipe 3 is welded by a rolled inner steel plate 31, a rolled outer steel plate 32 and two identical end steel plates 33. The rolled inner steel plate 31 serves as the inner ring of the hollow square steel pipe 3, the rolled outer steel plate 32 serves as the outer ring of the hollow square steel pipe 3, and the end steel plates 33 are closed at the upper and lower ends. The steel plate cylinder 2 is welded by the steel plate cylinder unit 21 and the rolled inner steel plate 31 of the hollow square steel pipe 3. The steel plate cylinder units 21 can be arranged at equal intervals along the axial direction of the well wall assembly 1. In some embodiments, a single integral steel plate cylinder unit 21 can also be directly used in the well wall assembly 1.

[0050] In a further embodiment of the present invention, referring again to Figure 3 、 Figure 5 and Figure 6 , between two adjacent hollow square steel pipes 3, the opening rib plates 4 are uniformly arranged along the circumferential direction of the well wall assembly 1. The plate surface of the opening rib plate 4 is vertical, and a reserved hole 41 is provided at its central position. The shape of the reserved hole 41 is circular, rectangular or polygonal. By providing the reserved hole 41, the cooperative effect between the concrete and the steel components can be further improved.

[0051] In a further embodiment of the present invention, the steel reinforcement cage 5 includes circumferential steel bars 51 and vertical steel bars 52. Among them, the circumferential steel bars 51 are arranged at equal intervals along the axial direction of the well wall assembly 1, and the vertical steel bars 52 are uniformly arranged along the circumferential direction of the well wall assembly 1, jointly surrounding the hollow square steel pipe 3, the opening rib plate 4, etc.

[0052] The precast concrete 6 of the present invention can be ordinary concrete, high-strength concrete, self-compacting concrete or UHPC, etc.

[0053] The specific construction method of the present invention is as follows:

[0054] Step 1, in the factory, weld the steel plate cylinder unit 21 and the opening rib plate 4 to the hollow square steel pipe 3 respectively, and weld the convex tenon steel pipe 10 and the concave tenon steel pipe 9 to the upper and lower ends of the hollow square steel pipe 3 respectively;

[0055] Step 2, in the factory, place the steel reinforcement cage 5 outside the hollow square steel pipe 3 and pour the precast concrete 6 to complete the processing of the well wall assembly 1.

[0056] Step 3: At the site, complete the support work on the outer side of the shaft wall, suspend the shaft wall assembly 1 to the designated position and sink it.

[0057] Step 4: At the site, the adjacent shaft wall assemblies 1 are vertically connected through the steel pipe tenon and mortise connection node 7 and the bent bolt connection node 8. Repeat the above work to complete the on-site splicing of the shaft wall.

[0058] In summary, the present invention discloses a single steel plate-reinforced concrete shaft wall with built-in hollow steel pipes and connection nodes. The shaft wall comprises a plurality of shaft wall assemblies stacked along the axial direction. The shaft wall assembly includes a steel plate cylinder arranged on the inner surface of the shaft wall, a hollow square steel pipe arranged inside the shaft wall, an opening rib plate arranged between adjacent hollow square steel pipes, a steel reinforcement cage arranged outside the hollow square steel pipe, and precast concrete poured outside the steel plate cylinder. The connection node includes a steel pipe tenon and mortise connection node arranged on the inner side of the shaft wall and a bent bolt connection node arranged on the outer side of the shaft wall. In the present invention, a circumferential steel pipe is arranged on the inner side of the shaft wall, which improves the overall coordinated stress effect and bearing capacity of the shaft wall structure. Compared with the traditional single steel plate-concrete shaft wall, the thickness of the shaft wall can be greatly reduced, and the cost can be reduced. The connection node improves the bearing capacity and reliability of the shaft wall, and has the advantages of simple process and controllable quality. The structure of the present invention is reasonable and the construction is simple, and it can be used for various mine construction, and has broad engineering application prospects.

Claims

1. A single steel plate-reinforced concrete shaft wall with a built-in hollow steel pipe, characterized in that: The well wall comprises a plurality of well wall components (1) stacked and arranged in an axial direction, wherein the well wall components (1) comprise: a steel plate cylinder (2) arranged on the inner surface of the well wall, a hollow square steel pipe (3) arranged inside the well wall, a plurality of perforated ribs (4) arranged between adjacent hollow square steel pipes (3), a steel cage (5) arranged outside the hollow square steel pipe (3), and precast concrete (6) cast on the outside of the steel plate cylinder (2) to form a whole with the hollow square steel pipe (3), the perforated ribs (4) and the steel cage (5); wherein each of the hollow square steel pipes (3) is arranged around the outside of the steel plate cylinder (2) and is arranged at equal intervals along the axial direction of the well wall.

2. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 1 is characterized in that: The hollow square steel tube (3) is welded together by a bent inner steel plate (31), a bent outer steel plate (32) and two identical end steel plates (33); the steel plate cylinder (2) is welded together by steel plate cylinder units (21) arranged at equal intervals along the axial direction of the well wall component (1) and the bent inner steel plate (31) in the hollow square steel tube (3).

3. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 1 is characterized in that: The perforated ribs (4) are evenly arranged along the circumferential direction of the well wall assembly (1), and the plate surface of the perforated ribs (4) is vertical, and a reserved hole (41) is arranged at the center thereof. The shape of the reserved hole (41) is circular, rectangular or polygonal.

4. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 1 is characterized in that: The steel cage (5) comprises circumferential steel bars (51) arranged at equal intervals along the axial direction of the shaft wall component (1), and vertical steel bars (52) arranged evenly along the circumferential direction of the shaft wall component (1).

5. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 1 is characterized in that: The precast concrete (6) is made of ordinary concrete, high-strength concrete, self-compacting concrete or UHPC.

6. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 1, characterized in that: Adjacent well wall components (1) are assembled via connection nodes, wherein the connection nodes include: a steel pipe mortise and tenon connection node (7) arranged on the inner side of the well wall, and a bent bolt connection node (8) arranged on the outer side of the well wall.

7. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 6, characterized in that: The steel pipe mortise and tenon connection node (7) comprises: a concave tenon steel pipe (9), a convex tenon steel pipe (10), a grouting material (11), and a PBL connector (12) welded to the outer wall of the convex tenon steel pipe (10); the convex tenon steel pipe (10) and the concave tenon steel pipe (9) are respectively welded to the upper and lower end surfaces of the hollow square steel pipe (3), and the convex tenon steel pipe (10) and the concave tenon steel pipe (9) are evenly arranged along the circumferential direction of the well wall assembly (1).

8. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 7, characterized in that: The wall thickness of the concave-tenon steel pipe (9) and the convex-tenon steel pipe (10) is the same, and the inner diameter of the concave-tenon steel pipe (9) is greater than the outer diameter of the convex-tenon steel pipe (10).

9. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to claim 7, characterized in that: The bent bolt connection node (8) comprises a reserved bolt groove (13) for vertical connection arranged on the outer wall of the precast concrete (6), and the vertical connection of adjacent shaft wall components (1) is completed by passing the bent bolt (14) through the bolt hole in the reserved bolt groove (13).

10. The single steel plate-reinforced concrete shaft wall with built-in hollow steel pipe according to any one of claims 1 to 9, characterized in that: The diameter of the shaft wall is not less than 8m, the thickness of the shaft wall is not less than 300mm and not more than 500mm, the steel plate tube (2) and the hollow square steel tube (3) are both made of ordinary high-strength steel, the thickness of the steel plate tube (2) is not less than 10mm and not more than 20mm, and the thickness of the hollow square steel tube (3) is not less than 5mm and not more than 10mm.

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