Concrete support wallboard

Abstract

The utility model discloses a concrete supporting wallboard, and belongs to the field of building foundation pit engineering. A main body part of the concrete supporting wallboard is a concrete pile, a pile head is fixedly arranged at the bottom of the concrete pile, two flexible force transmission mechanisms are arranged in the concrete supporting wallboard, one end of each flexible force transmission mechanism is arranged in a metal conical head, and the other end of each flexible force transmission mechanism is arranged in a metal conical head. A pipeline used for installing a flexible force transmission mechanism is longitudinally arranged in a concrete pile of the concrete supporting wallboard, the upper portion of the pipeline is a pipeline bending part, and the pipeline bending part is laterally bent to form the concrete pile. The flexible force transmission mechanism has the advantages that the flexible force transmission mechanism is simple in structure and convenient to install, use, replace and disassemble; due to the arrangement of the pile head guide ribs, the stability of the concrete support wallboard during construction is ensured; after foundation pit construction is finished, the concrete supporting wall plate can be pulled out of the soil body through the flexible force transmission mechanism, the concrete supporting wall plate can be recycled, and cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of building foundation pit engineering, in particular to a concrete supporting wallboard. Background Art

[0002] Foundation pit support is a temporary support, reinforcement, protection and groundwater control measure for the foundation pit to protect the safety of the underground main structure construction and the surrounding environment of the foundation pit. With the renewal and iteration of urban construction, more and more high-rise buildings and underground projects need to carry out foundation pit or deep foundation pit construction. Foundation pit support is a key measure to ensure construction safety. The existing foundation pit support methods mainly include pile rows, underground continuous walls, anchor rods and internal support structures, soil nail walls, gravity cement soil walls, Larsen steel sheet piles, etc. According to the provisions of the Technical Specifications for Safety of Construction of Deep Foundation Pit Engineering in Buildings JGJ 311-2013, deep foundation pit support construction mainly includes the following forms: soil nail walls, gravity cement soil walls, underground continuous walls, cast-in-place pile row retaining walls, sheet pile retaining walls, steel cement soil mixing walls, internal supports, soil anchor rods, caissons, reverse construction and pit soil reinforcement, etc.

[0003] Soil nail wall is easy to construct and economical; however, it has high requirements for the construction environment and needs to be supported. The construction process of gravity cement soil wall is mature, with good integrity and good waterproof and anti-seepage performance; however, it requires a large amount of concrete and has a long curing period. The underground continuous wall has good integrity, high rigidity, good waterproof and anti-seepage performance; however, it has a long curing period, many wet operations on site, and high project cost. The cast-in-place pile retaining wall has good integrity and rigidity, can be applied to complex geological conditions, and has good waterproof and anti-seepage performance; however, a large amount of mud will be generated when drilling is used, and manual digging requires construction in the well, which has a high risk factor, and the curing period of the cast-in-place concrete is long, and the project cost is high. The sheet pile retaining wall is easy and quick to construct, and the steel sheet pile can be recycled after use. It has good anti-seepage performance and can greatly reduce the construction period; however, for deep foundation pit support, its rigidity is relatively low and the deformation is large after the foundation pit is excavated. The steel-cement soil mixing wall is basically noiseless during construction and has good structural strength; however, its support depth is limited, and the steel is difficult to recycle. The mixing strength of soil and cement is not easy to control, and the project cost is high. Internal supports, soil anchors, and soil reinforcement in the pit often cannot be used alone for support operations and are often used as auxiliary facilities. Caisson construction should not be used when there are strict environmental protection requirements for existing buildings (structures) and pipelines around the foundation pit; the reverse method requires cumbersome construction organization and coordination of ventilation, lighting, drainage, beam and slab construction and other requirements.

[0004] Conventional foundation pit support projects are often used as temporary projects. They lose their function after the project emerges from the ground or is completed. Most of them cannot be used anymore, which makes the foundation pit support costly and wasteful.

[0005] CN 108343069 A discloses a precast concrete support wall, which includes a reinforced concrete wall, wherein transverse steel bars and vertical steel bars are arranged in the reinforced concrete wall, and connectors are arranged on both sides of the reinforced concrete wall along the vertical direction of the reinforced concrete wall, and a steel wall cap is arranged on the upper part of the reinforced concrete wall, and a protective steel plate is arranged on the outer side of the bottom of the reinforced concrete wall. In order to pull the precast concrete support wall out of the soil, a lifting lug is arranged on the steel wall cap. However, when the precast concrete support wall is pulled out, the concrete of the reinforced concrete wall is tensilely damaged, and the precast concrete support wall cannot be reused.

[0006] CN 108086319 B discloses a pulling device for a precast concrete supporting wall. A vertical hollow tube is embedded in the precast concrete supporting wall. The pulling device comprises a pulling mechanism penetrating the hollow tube. The lower end of the pulling mechanism is fixedly arranged inside the precast concrete supporting wall and located at the lower end of the hollow tube. The upper end of the pulling mechanism is provided with a first fixing device for tensioning the pulling mechanism. The first fixing device is not connected to the precast concrete supporting wall. The problem of pulling the precast concrete supporting wall out of the soil for reuse can be solved. However, the adopted technical solution requires the pulling device to be installed before pouring concrete during the production of the supporting wall, and the production and installation steps are complicated. The fixing device of the pulling mechanism is installed in the protective steel plate, which greatly changes the structural form of the protective steel plate, and the pile head processing form is complicated. Utility Model Content

[0007] The utility model provides a concrete support wall panel. A flexible force transmission mechanism is installed in the concrete pile of the concrete support wall panel, so that the concrete support wall panel can be pulled out from the soil conveniently and quickly without reducing the performance of the concrete pile, so that it can be reused and the stability of the concrete support wall panel during construction is guaranteed.

[0008] The utility model provides the following technical solutions:

[0009] A concrete supporting wall panel, the main part of which is a concrete pile, a pile head is fixedly arranged at the bottom of the concrete pile, the pile head is a cavity formed by welding steel plates, the interior of the cavity is fixedly connected to the concrete pile, at least one pile head stiffening rib is arranged inside the pile head, at least one pile head guide rib is arranged outside each inclined side of the pile head, and two cone head mounting holes are arranged on the bottom end of the pile head; a left-right symmetrical penetrating pipe is longitudinally arranged in the concrete pile of the concrete supporting wall panel for installing a flexible force transmission mechanism, the upper part of the pipe is a pipe bending part, and the pipe bending part is bent laterally outward Concrete pile, the lower port of the pipeline is close to the inner side of the cone head mounting hole corresponding to the pile head; a flexible force transmission mechanism is respectively arranged in the two pipelines, one end of the flexible force transmission mechanism is provided with a metal cone head, the metal cone head includes a cone head neck and a cone head cap, one end of the flexible force transmission mechanism is fixedly connected with the cone head neck, the cone head neck is detachably arranged in the cone head mounting hole, the circular surface diameter of the cone head cap is larger than the diameter of the cone head mounting hole, the other end of the flexible force transmission mechanism passes through the bottom concrete wall panel, and is fixed on the outside of the bent part of the pipeline to keep the flexible force transmission mechanism in a taut state.

[0010] Furthermore, a supporting plate filler is arranged inside the concrete pile.

[0011] Furthermore, a steel wall cap is fixed on the top of the concrete pile. The steel wall cap is welded from steel plates. The top and sides of the steel wall cap are closed all around, and the bottom is open.

[0012] Furthermore, prestressed tendons are arranged in the concrete supporting wall panel, pile head prestressed tendon tensioning holes are arranged on the inclined surfaces on both sides of the pile head, and steel wall cap prestressed tendon tensioning holes are arranged on the top of the steel wall cap. One end of the prestressed tendon is fixed on the pile head prestressed tendon tensioning hole, and the other end of the prestressed tendon is fixed on the steel wall cap prestressed tendon tensioning hole.

[0013] Furthermore, a steel cage formed by longitudinal steel bars and transverse steel bars is arranged in the concrete supporting wall panel.

[0014] Furthermore, an internal thread is arranged in the cone head mounting hole, an external thread matching the internal thread of the cone head mounting hole is arranged on the cone head neck, and the metal cone head is threadedly connected to the cone head mounting hole; a tool connection port is arranged on the side of the cone head cap.

[0015] Furthermore, at least one cable hole is provided in the length direction of the concrete pile.

[0016] Furthermore, the diameter of the cable holes is 150 mm, and the spacing is no more than 1800 mm.

[0017] Furthermore, a number of connecting pieces are symmetrically arranged at the left and right ends of the front side of the concrete pile along the length direction. The connecting pieces include an internal threaded connecting sleeve, a bolt and a fixed arm. The fixed arm is detachably connected to the internal threaded connecting sleeve.

[0018] Furthermore, the length of the concrete supporting wall panel is not greater than 9m, the thickness is not less than 200mm, and the width is not less than 500mm.

[0019] The utility model has the following beneficial effects:

[0020] (1) The flexible force transmission mechanism has a simple structure and is easy to install, use, replace and disassemble;

[0021] (2) The setting of the pile head guide rib ensures the stability of the concrete support wall panel during construction;

[0022] (3) After the foundation pit construction is completed, the concrete support wall panels can be pulled out from the soil through a flexible force transmission mechanism, and the concrete support wall panels can be recycled, greatly reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional diagram of a concrete supporting wall panel;

[0024] Figure 2 A perspective view of a concrete retaining wall panel with a steel wall cap;

[0025] Figure 3 It is a front view of a concrete retaining wall panel with a steel wall cap;

[0026] Figure 4 for Figure 3 Sectional view along AA direction;

[0027] Figure 5 for Figure 3 Cross-sectional view along the BB direction;

[0028] Figure 6 for Figure 3 A partial enlarged view of point C in the middle;

[0029] Figure 7 The left side view of the concrete retaining wall panel with steel wall cap;

[0030] Figure 8 for Figure 7 A partial enlarged view of point D in the middle;

[0031] Fig. 9 A three-dimensional diagram showing the connection state of the pile head and the extraction device;

[0032] Fig.10 It is a side view of the connection state of the pile head and the extraction device;

[0033] Fig.11 for Fig.10 Sectional view along EE direction;

[0034] Fig.12It is a three-dimensional diagram of a trapezoidal pile head;

[0035] Fig.13 It is the front view of the trapezoidal pile head;

[0036] Fig.14 It is a top view of the trapezoidal pile head;

[0037] Fig.15 It is the side view of the trapezoidal pile head;

[0038] Fig.16 It is a three-dimensional diagram of a rectangular pile head;

[0039] Fig.17 It is the front view of the rectangular pile head;

[0040] Fig.18 It is a top view of a rectangular pile head;

[0041] Fig.19 It is a three-dimensional diagram of a steel wall cap;

[0042] Fig. 20 It is a top view of the steel wall cap;

[0043] Fig.21 It is the front view of the steel wall cap;

[0044] Fig. 22 It is a three-dimensional diagram of the connection between the metal cone head and the flexible force transmission mechanism;

[0045] Fig.23 A three-dimensional diagram of another metal cone head connected to a flexible force transmission mechanism;

[0046] Fig.24 This is a three-dimensional diagram of the foundation pit retaining wall;

[0047] Fig.25 This is the front view of the foundation pit retaining wall;

[0048] Fig.26 for Fig.25 Cross-sectional view along the FF axis.

[0049] In the figure, 1. concrete pile; 1-1. support plate filling; 2. pile head; 2-1. pile head stiffening rib; 2-2. prestressed tendon tensioning hole of pile head; 2-3. cone head mounting hole; 2-4. pile head guide rib; 3. steel wall cap; 3-1. prestressed tendon tensioning hole of steel wall cap; 4. longitudinal steel bar; 5. transverse steel bar; 6. prestressed tendon; 7. pipeline; 7-1. pipeline bending part; 8. flexible force transmission mechanism; 8-1. metal cone head; 8-1-1. cone head neck; 8-1-2. cone head cap; 8-1-3. tool connection port; 9. rope hole; 10. connector; 10-1. internal threaded connecting sleeve; 10-2. bolt; 10-3. fixed arm; 10-4. baffle. DETAILED DESCRIPTION

[0050] In order to make the technical problems to be solved, technical solutions and advantages of the present invention more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0051] A concrete supporting wall panel, the main part of which is a concrete pile 1, and a supporting plate filler 1-1 is arranged inside the concrete pile 1. The supporting plate filler 1-1 can be formed by a plastic hollow tube or the like, or can be formed by filling with a lightweight material. The provision of the supporting plate filler 1-1 can reduce the use of concrete and reduce the weight of the concrete pile 1, and is convenient for transportation and mechanical lifting.

[0052] A pile head 2 is fixedly arranged at the bottom of the concrete pile 1. The arrangement of the pile head 2 can facilitate the driving of the concrete support wall panel into the soil during construction. The pile head 2 is a cavity formed by welding steel plates. The interior of the cavity is fixedly connected to the concrete pile 1. At least one pile head stiffening rib 2-1 is arranged inside the pile head 2. The number of the pile head stiffening ribs 2-1 is set according to the specific usage. In this embodiment, three pile head stiffening ribs 2-1 are arranged to enhance the rigidity and strength of the pile head 2, avoid the pile head 2 from being damaged by pressure when driven into the soil, and ensure that the concrete support wall panel is smoothly driven into the soil. Two cone head mounting holes 2-3 are arranged on the bottom end of the pile head 2 for installing the metal cone head 8-1. In order to ensure that the concrete support wall panel does not deviate in the vertical direction during the process of driving into the soil, at least one pile head guide rib 2-4 is arranged on the outside of each inclined side of the pile head 2. The arrangement of the pile head guide ribs 2-4 ensures the stability of the concrete support wall panel during construction. During the driving process, the pile head guide ribs 2-4 evenly separate the soil along the side of the pile head 2, ensuring the stability of the concrete support wallboard in the vertical direction during construction. According to the size of the side, multiple pile head guide ribs 2-4 can be added to achieve better stability.

[0053] Specifically, the pile head 2 has two forms, one is a trapezoidal pile head 2, the structure is as follows Figures 11 to 14 As shown, the trapezoidal pile head 2 is easy to process and is suitable for areas with soft soil. When driven into the soil, the lateral displacement is small. Another type of pile head 2 is a rectangular pile head 2, and the structure is as shown in FIG. Figures 15 to 17 As shown, the rectangular pile head 2 is used in denser areas, and may deviate both forwardly and laterally when driven into the soil. The bottoms of the two types of pile heads 2 are flat or curved, which reduces the damage to the end of the pile head 2 when it is driven into the soil.

[0054] A symmetrically penetrating pipe 7 is longitudinally arranged in the concrete pile 1 of the concrete supporting wallboard for installing a flexible force transmission mechanism 8. The upper portion of the pipe 7 is a pipe bending portion 7-1, and the pipe bending portion 7-1 is bent laterally out of the concrete pile 1. The lower end of the pipe 7 is closely attached to the inner side of the cone head mounting hole 2-3 corresponding to the pile head 2. Specifically, the pipe 7 is a metal pipe or a plastic pipe. In order to ensure the use strength of the pipe 7, a metal pipe is preferably used.

[0055] A flexible force transmission mechanism 8 is respectively provided through the two pipes 7, which is used to pull the concrete support wall panel out of the soil. A metal cone head 8-1 is provided at one end of the flexible force transmission mechanism 8, and the metal cone head 8-1 includes a cone head neck 8-1-1 and a cone head cap 8-1-2. One end of the flexible force transmission mechanism 8 is fixedly connected to the cone head neck 8-1-1, and the cone head neck 8-1-1 is detachably arranged in the cone head mounting hole 2-3. The circular surface diameter of the cone head cap 8-1-2 is larger than the diameter of the cone head mounting hole 2-3. The other end of the flexible force transmission mechanism 8 passes through the bottom concrete wall panel and is fixed to the outside of the pipe bending part 7-1. When the concrete support wall panel is driven into, the pile driver will not damage the flexible force transmission mechanism 8. Keep the flexible force transmission mechanism 8 in a taut state. The flexible force transmission mechanism 8 can be a high-strength material such as prestressed steel strands, prestressed steel cables, and ultra-high molecular weight polyethylene fibers. Such as Fig. 22 As shown, the cone head neck 8-1-1 is cylindrical. After the metal cone head 8-1 is installed in the cone head mounting hole 2-3, the distal end of the flexible force transmission mechanism 8 is knotted or clamped and fixed at the pipe bending portion 7-1, so as to realize a detachable fixed connection between the cone head neck 8-1-1 and the cone head mounting hole 2-3. In order to further strengthen the connection between the cone head mounting hole 2-3 and the metal cone head 8-1, an internal thread is provided in the cone head mounting hole 2-3, and an external thread matching the internal thread of the cone head mounting hole 2-3 is provided on the cone head neck 8-1-1, so as to threadably connect the cone head neck 8-1-1 to the cone head mounting hole 2-3. In order to facilitate the installation of the cone head neck 8-1-1 on the cone head mounting hole 2-3, a tool connection port 8-1-3 is provided on the side of the cone head cap 8-1-2, such as Fig.23 As shown, it is used to connect the tightening tool. When installing, insert one end of the tightening tool into the tool connection port 8-1-3, and screw the metal cone head 8-1 to install it on the cone head installation hole 2-3. The flexible force transmission mechanism has a simple structure and is easy to install, use, replace and disassemble.

[0056] When the pile driver clamps and strikes the concrete support wall panel, in order to protect the top of the concrete support wall panel, a steel wall cap 3 is fixed on the top of the concrete pile 1. The steel wall cap 3 is welded from steel plates. The structure of the steel wall cap 3 is as follows: Figures 19 to 21 As shown, the top and sides of the steel wall cap 3 are closed all around and the bottom is open. When preparing the concrete support wall panel and pouring concrete, the concrete can enter the internal space of the steel wall cap 3 to achieve a fixed connection between the steel wall cap 3 and the concrete pile 1.

[0057] Longitudinal steel bars 4 and transverse steel bars 5 are arranged in the concrete support wall panel to form a steel cage, which improves the strength of the concrete support wall panel. The longitudinal steel bars 4 are welded and fixed to the pile head 2 and the steel wall cap 3. The two ends of the longitudinal steel bars are bent to increase the welding surface of the longitudinal steel bars, the pile head and the steel wall cap. Double-sided welding is adopted during welding, and the welding length is not less than 5d, where d is the diameter of the longitudinal steel bar.

[0058] Prestressed tendons 6 are arranged in the concrete support wall panel. Pile head prestressed tendon tensioning holes 2-2 are arranged on the inclined surfaces on both sides of the pile head 2. Steel wall cap prestressed tendon tensioning holes 3-1 are arranged on the top of the steel wall cap 3. The pile head prestressed tendon tensioning holes 2-2 and the steel wall cap prestressed tendon tensioning holes 3-1 are used to install prestressed tendons 6. One end of the prestressed tendon 6 is fixed on the pile head prestressed tendon tensioning hole 2-2, and the other end is fixed on the steel wall cap prestressed tendon tensioning hole 3-1. The provision of the prestressed tendons 6 enhances the crack resistance of the concrete support wall panel and prevents cracking during the processes of turning over, transportation, hoisting, burying and pulling out during the factory preparation process. Prestressed tendons 6 can use prestressed steel wires or steel strands.

[0059] When cable anchor + retaining wall support is adopted, cable holes 9 are provided on the concrete pile 1, and the cable holes 9 are provided along the height direction of the concrete pile 1. The diameter of the cable holes 9 in this embodiment is 150 mm, and the spacing is not greater than 1800 mm. When internal support (steel or concrete) is adopted, the concrete pile 1 does not need to be provided with cable holes 9. In the foundation pit, the side of the concrete retaining wallboard is provided with an internal support member to achieve the stability of the concrete retaining wallboard.

[0060] A plurality of connectors 10 are symmetrically arranged along the length direction at the left and right ends of the front side of the concrete pile 1. The connector 10 includes an internal thread connection sleeve 10-1, a bolt 10-2 and a fixed arm 10-3. The fixed arm 10-3 is detachably connected to the internal thread connection sleeve 10-1. The fixed arm 10-3 is used to connect the concrete supporting wall panels on the left and right sides and to fix the baffle 10-4. Figure 24 to Figure 26 Specifically, the baffle 10-4 is inserted into the soil behind the fixed arm 10-3 to support the soil in the gap between the concrete support wall panels, thereby reducing the number of concrete support wall panels and saving costs. After the foundation pit construction is completed, the bolts 10-2, the fixed arm 10-3 and the baffle 10-4 are removed.

[0061] The length of the concrete support wall panel shall not exceed 9m, the thickness shall not be less than 200mm, and the width shall not be less than 500mm. The specific dimensions shall be designed and determined according to the depth of the foundation pit, the deadweight of the wall panel module, and the installation equipment.

[0062] During on-site construction, the punching and drawing machine clamps and fixes the upper end of the concrete support wall panel. When the concrete support wall panel is provided with a steel wall cap 3, the punching and drawing machine clamps the steel wall cap 3 position, lifts the concrete support wall panel, and strikes the top of the concrete support wall panel to drive the concrete pile 1 of the concrete support wall panel into the soil. Excavate to a specific depth. When the bolt 10-2 is exposed from the soil, remove the bolt 10-2, install the fixed arm 10-3, and then connect the bolt 10-2 to the internal threaded connection sleeve 10-1. Insert the baffle 10-4 into the soil behind the fixed arm 10-3. The fixed arm 10-3 fixes the baffle 10-4 on the soil to form a foundation pit support wall. When cable anchor + support wall support is adopted: the cable anchor is fixed in the cable hole 9; when internal support is adopted for fixing, an internal support is set up on the side of the concrete support wall panel in the foundation pit. When the foundation pit construction is completed, remove the cable anchor or internal support, remove the bolt 10-2, the fixed arm 10-3 and the baffle 10-4, use a crane to connect and fix the flexible force transmission mechanism 8, start the crane, and pull the concrete support wall panels out of the soil. After the foundation pit construction is completed, the concrete support wall panels can be pulled out of the soil by a crane, and the concrete support wall panels can be recycled, which greatly reduces costs. The setting of the pile head guide ribs 2-4 ensures the stability of the concrete support wall panels in the soil during construction. After the foundation pit construction is completed, the concrete support wall panels can be pulled out of the soil by a flexible force transmission mechanism, and the concrete support wall panels can be recycled, which greatly reduces costs.

[0063] The concrete support wall panels are prefabricated in the factory and can be directly constructed, which greatly reduces on-site wet operations and shortens the construction period. After the foundation pit construction is completed, the concrete support wall panels can be recycled, greatly reducing costs.

[0064] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A concrete supporting wall panel, the main part of which is a concrete pile (1), It is characterized in that A pile head (2) is fixedly arranged at the bottom of the concrete pile (1); the pile head (2) is a cavity formed by welding steel plates; the interior of the cavity is fixedly connected to the concrete pile (1); at least one pile head stiffening rib (2-1) is arranged inside the pile head (2); at least one pile head guide rib (2-4) is arranged outside each inclined side surface of the pile head (2); and two cone head mounting holes (2-3) are arranged at the bottom end of the pile head (2); A left-right symmetrical through-going pipe (7) is longitudinally arranged in a concrete pile (1) of a concrete supporting wall panel for installing a flexible force transmission mechanism (8); the upper portion of the pipe (7) is a pipe bending portion (7-1); the pipe bending portion (7-1) is bent laterally out of the concrete pile (1); and the lower end of the pipe (7) is closely attached to the inner side of a cone head mounting hole (2-3) corresponding to the pile head (2); A flexible force transmission mechanism (8) is respectively provided through the two pipes (7); a metal cone head (8-1) is provided at one end of the flexible force transmission mechanism (8); the metal cone head (8-1) comprises a cone head neck (8-1-1) and a cone head cap (8-1-2); one end of the flexible force transmission mechanism (8) is fixedly connected to the cone head neck (8-1-1); the cone head neck (8-1-1) is detachably arranged in the cone head mounting hole (2-3); the circular surface diameter of the cone head cap (8-1-2) is larger than the diameter of the cone head mounting hole (2-3); the other end of the flexible force transmission mechanism (8) passes through the bottom concrete wall plate and is fixed to the outside of the pipe bending portion (7-1) to keep the flexible force transmission mechanism (8) in a taut state.

2. The concrete support wall panel according to claim 1, It is characterized in that A supporting plate filler (1-1) is arranged inside the concrete pile (1).

3. The concrete supporting wall panel according to claim 1, It is characterized in that A steel wall cap (3) is fixed on the top of the concrete pile (1). The steel wall cap (3) is welded from steel plates. The top and sides of the steel wall cap (3) are closed and the bottom is open.

4. The concrete supporting wall panel according to claim 3, It is characterized in that Prestressed tendons (6) are arranged in the concrete supporting wall panel, pile head prestressed tendon tensioning holes (2-2) are arranged on the inclined surfaces on both sides of the pile head (2), and steel wall cap prestressed tendon tensioning holes (3-1) are arranged on the top of the steel wall cap (3), one end of the prestressed tendon (6) is fixed on the pile head prestressed tendon tensioning hole (2-2), and the other end of the prestressed tendon (6) is fixed on the steel wall cap prestressed tendon tensioning hole (3-1).

5. The concrete supporting wall panel according to claim 1, It is characterized in that A steel cage formed by longitudinal steel bars (4) and transverse steel bars (5) is arranged in the concrete supporting wall panel.

6. The concrete supporting wall panel according to claim 1, It is characterized in that The cone head mounting hole (2-3) is provided with an internal thread, the cone head neck (8-1-1) is provided with an external thread matching the internal thread of the cone head mounting hole (2-3), and the metal cone head (8-1) is threadedly connected to the cone head mounting hole (2-3); A tool connection port (8-1-3) is arranged on the side of the cone head cap (8-1-2).

7. The concrete supporting wall panel according to claim 1, It is characterized in that At least one cable hole (9) is arranged in the length direction of the concrete pile (1).

8. The concrete supporting wall panel according to claim 7, It is characterized in that The diameter of the cable holes (9) is 150 mm, and the spacing is no more than 1800 mm.

9. The concrete supporting wall panel according to claim 1, It is characterized in that A plurality of connecting pieces (10) are symmetrically arranged at the left and right end portions of the front side of the concrete pile (1) along the length direction. The connecting piece (10) comprises an internal thread connecting sleeve (10-1), a bolt (10-2) and a fixing arm (10-3). The fixing arm (10-3) is detachably connected to the internal thread connecting sleeve (10-1).

10. The concrete supporting wall panel according to claim 1, It is characterized in that The length of the concrete supporting wall panel shall not exceed 9m, the thickness shall not be less than 200mm and the width shall not be less than 500mm.

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