Underground diaphragm wall structure with rear cut hole

Abstract

The utility model provides an underground diaphragm wall structure with rear cut holes, which comprises an underground diaphragm wall body, the underground diaphragm wall body is formed by integrally pouring concrete into a steel bar frame, and rear cut hole areas are arranged on two sides of the underground diaphragm wall body; the reserved pipe frame is arranged in the rear cut hole area and comprises a plurality of reserved pipe assemblies vertically arranged in the rear cut hole area at intervals and a connecting assembly used for connecting the multiple sets of reserved pipe assemblies, and each reserved pipe assembly comprises a starting reserved pipe and a stopping reserved pipe which are arranged in the thickness direction of the underground diaphragm wall body; the initial reserved pipe and the final reserved pipe are oppositely arranged on the two sides of the rear hole cutting area, and at least two threading ropes are arranged in the initial reserved pipe. The underground diaphragm wall structure with the rear cut hole aims to solve the problems that concrete of an existing underground diaphragm wall is difficult to chiseling away, and the stability of the structure is affected due to the fact that the overall structure is vibrated during chiseling away.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering, specifically to a diaphragm wall structure with post-cut holes. Background Technology

[0002] In the construction of rail stations, achieving the connection between the station and its ancillary structures is a crucial step in realizing the functionality of these facilities. However, using conventional construction techniques to achieve this connection presents a series of challenging problems. First, conventional techniques often require the removal of large volumes of high-strength concrete in the later stages of construction. Due to its high strength and hardness, high-strength concrete makes removal extremely difficult. Construction workers need to expend considerable time and effort, using tools such as pneumatic drills to break down the concrete bit by bit. This not only requires a significant investment of manpower but also necessitates ample material resources such as pneumatic drills. The continuous high-intensity construction and prolonged equipment operation undoubtedly lead to a substantial increase in financial costs. Furthermore, the entire removal process is time-consuming, severely impacting the overall project schedule. In addition, the extensive use of pneumatic drills generates strong vibrations. These vibrations are transmitted through the completed structure, adversely affecting its stability. Under prolonged vibration, the internal microstructure of the structure may change, and the originally dense concrete structure may develop micro-cracks, significantly increasing the risk of structural leakage. If a structural leak occurs, it will not only affect the normal use of the rail station, but also require additional resources for repair, further increasing the project cost and time cost. Summary of the Invention

[0003] The problem this utility model aims to solve is to provide a diaphragm wall structure with post-cut holes, in order to address the current difficulties in removing concrete from diaphragm walls and the vibration of the overall structure during removal, which affects the stability of the structure.

[0004] The technical solution adopted by this utility model to solve the above problems is: a diaphragm wall structure with post-cut holes.

[0005] Includes a diaphragm wall body, which is formed by integrally pouring concrete onto a steel frame and has post-cut hole areas on both sides.

[0006] A pre-reserved pipe rack is installed within the post-cutting hole area. It includes several pre-reserved pipe assemblies arranged vertically at intervals along the post-cutting hole area, and connecting assemblies for connecting multiple sets of pre-reserved pipe assemblies. Each pre-reserved pipe assembly includes a starting pre-reserved pipe and a ending pre-reserved pipe arranged along the thickness direction of the diaphragm wall body. The starting and ending pre-reserved pipes are positioned opposite each other on both sides of the post-cutting hole area. At least two threaded ropes are installed inside the starting pre-reserved pipe. These threaded ropes are used to connect to a cutting rope when cutting the post-cutting hole area. One set of cutting ropes from the starting pre-reserved pipe cuts vertically upwards to the upper starting pre-reserved pipe and then horizontally to the upper ending pre-reserved pipe. The other set cuts horizontally to the ending pre-reserved pipe and then vertically upwards to the upper ending pre-reserved pipe, thus achieving the cutting.

[0007] In traditional construction methods, achieving the connection between a station and its ancillary structures requires significant manpower, material resources, financial resources, and time, necessitating the removal of large volumes of high-grade concrete. A post-cutting diaphragm wall structure, through its pre-installed pipe supports and threaded rope design, provides the necessary conditions for later cutting during the construction phase, eliminating the need for the difficult and costly removal of high-grade concrete after completion. When connection is needed, the threaded rope inside the pre-installed pipe is connected to the cutting rope. Following a predetermined cutting path—for example, one set of cutting ropes cuts vertically upwards to the upper pre-installed pipe and then horizontally to the upper end pre-installed pipe, while another set cuts horizontally to the end pre-installed pipe and then vertically upwards to the upper end pre-installed pipe—post-cutting can be achieved, greatly reducing construction and time costs. Furthermore, the pre-installed pipe supports provide overall structural stability to the diaphragm wall, increasing its stability during pouring. Excessive pneumatic hammer removal, on the other hand, causes vibrations to the completed structure, increasing the risk of structural leakage. This post-cutting diaphragm wall structure uses a cutting method instead of pneumatic hammer chisels, generating far less vibration during the cutting process. This reduces vibration interference with the completed structure, effectively preventing microscopic cracks caused by vibration-induced changes in the internal structure, thus lowering the risk of structural leakage and ensuring the stability and waterproof performance of the rail station structure.

[0008] Furthermore, both the starting reserved tube and the ending reserved tube include an outer circular tube body and a middle support part. The support part has four support arms that extend radially outward from the axis of the circular tube body and are perpendicular to each other. The extended ends of the support arms abut against the inner wall of the circular tube body, and one of the support arms is vertically upward during installation.

[0009] Pre-installed pipe assemblies are prone to displacement or deformation during concrete pouring. The support design for the starting and ending pre-installed pipes utilizes four mutually perpendicular support arms extending radially outward from the axis of the circular pipe. The ends of these arms abut against the inner wall of the circular pipe, forming a stable internal support structure. This structure significantly enhances the deformation resistance of the circular pipe, ensuring its stability even under the impact and lateral pressure of concrete during pouring. This prevents displacement or deformation, ensuring the positioning accuracy of the pre-installed holes and guaranteeing accurate subsequent hole cutting. Furthermore, during installation, one support arm of the starting and ending pre-installed pipes is vertically upward; this directional installation method facilitates accurate positioning of the threaded rope within the pipe.

[0010] Furthermore, the cylindrical tube and the support are integrally formed, wherein the support and the inner wall of the cylindrical tube form four mutually separated placement cavities, and the two threading ropes in the initial reserved tube are respectively set in two opposite placement cavities.

[0011] Four support arms divide the space inside the pipe. Combined with the design of placing the threading rope in the corresponding cavity, the position of the threading rope inside the pipe can be fixed, avoiding entanglement or displacement of the threading rope during construction. This improves the accuracy and reliability of the cutting rope connection and ensures the smooth progress of the post-cutting hole cutting work.

[0012] Furthermore, the reserved pipe assembly also includes a transverse connecting pipe arranged perpendicular to the thickness of the diaphragm wall. The two ends of the transverse connecting pipe are respectively connected to the starting reserved pipe and the ending reserved pipe to form a horizontally square structure.

[0013] The horizontal connecting pipe connects the starting reserved pipe and the ending reserved pipe to form a horizontal square structure, which greatly enhances the overall rigidity and stability of the reserved pipe assembly.

[0014] Furthermore, the connecting assembly is disposed between two adjacent pre-reserved pipe assemblies, and includes four vertical connecting pipes vertically arranged at the vertical edge of the post-cut hole area. The two vertical connecting pipes closer to the starting pre-reserved pipe are respectively connected to the starting pre-reserved pipe above and below them, and the two vertical connecting pipes closer to the ending pre-reserved pipe are respectively connected to the ending pre-reserved pipe above and below them, so as to form a rectangular structure.

[0015] The connecting assembly uses four vertical connecting pipes between adjacent pre-reserved pipe assemblies. The vertical connecting pipes closest to the starting and ending pre-reserved pipes connect to their corresponding upper and lower pre-reserved pipes, forming a stable rectangular structure. This structure makes the entire pre-reserved pipe rack an organic whole, greatly enhancing its resistance to external loads and deformation. During construction processes such as concrete pouring, it effectively prevents relative displacement between the pre-reserved pipe assemblies, ensuring the dimensional accuracy and shape stability of the post-cut hole area.

[0016] Furthermore, both ends of the uppermost starting reserved tube are connected to a closed tube. The closed tube is arranged vertically upward, and a sealing cap is installed at the end away from the starting reserved tube. A hook is provided at the end of the sealing cap facing the sealing tube, and the hook is used for winding and fixing one end of the threaded rope.

[0017] During construction, dust, sand, and other debris can easily enter the pre-installed pipe, potentially causing the threaded rope to become tangled and blocked, affecting the subsequent connection of the cutting rope and cutting operations. The combination of the closed pipe and sealing cap creates a sealed space, effectively preventing external debris from entering the initial pre-installed pipe. This ensures that the threaded rope inside the pipe remains clean and usable, guaranteeing smooth subsequent hole cutting and preventing increased construction difficulty and costs due to debris interference. The hook design on the sealing cap provides a reliable way to secure the threaded rope. Wrapping one end of the threaded rope around the hook ensures it won't move or fall off during construction, ensuring its accurate positioning. When connecting the cutting rope later, the stable position of the threaded rope facilitates quick and accurate connection, improving the efficiency and precision of the cutting operation. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present utility model;

[0019] Figure 2 This is a perspective view of a portion of the post-cut hole area of ​​this utility model;

[0020] Figure 3 This is a perspective view of the two adjacent reserved tube assemblies at the top of this utility model;

[0021] Figure 4 for Figure 3 A magnified view of the circled area.

[0022] Diagram: 1. Diaphragm wall body; 2. Post-cut hole area; 3. Reserved pipe rack; 4. Reserved pipe assembly; 4.1. Starting reserved pipe; 4.2. Ending reserved pipe; 4.3. Threading rope; 4.4. Horizontal connecting pipe; 5. Connecting assembly; 5.1. Vertical connecting pipe; 6. Sealing pipe; 7. Sealing cap; 8. Hook; 9. Round pipe body; 10. Support part; 10.1. Support arm. Detailed Implementation

[0023] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0024] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

[0026] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0027] Please refer to Figures 1 to 4A post-cut diaphragm wall structure includes a diaphragm wall body 1 formed by integrally casting concrete onto a reinforced steel frame, with post-cut hole areas 2 on both sides. A pre-reserved pipe frame 3 is provided within the post-cut hole area 2, consisting of a plurality of pre-reserved pipe assemblies 4 arranged vertically at intervals along the post-cut hole area 2, and connecting assemblies 5 connecting multiple sets of pre-reserved pipe assemblies 4. Each pre-reserved pipe assembly 4 includes a starting pre-reserved pipe 4.1 and a ending pre-reserved pipe 4.2 arranged along the thickness direction of the diaphragm wall body 1, positioned opposite each other on both sides of the post-cut hole area 2. The starting pre-reserved pipe 4.1 contains at least two threaded ropes 4.3 for connecting to the cutting rope when cutting the post-cut hole area 2. During cutting, one set of cutting ropes cuts vertically upwards to the upper starting pre-reserved pipe 4.1 and then horizontally to the upper ending pre-reserved pipe 4.2; the other set cuts horizontally to the ending pre-reserved pipe 4.2 and then vertically upwards to the upper ending pre-reserved pipe 4.2.

[0028] Both the initial reserved tube 4.1 and the final reserved tube 4.2 are composed of an outer circular tube 9 and a middle support part 10. The support part 10 has four support arms 10.1 that extend radially outward from the axis of the circular tube 9 and are perpendicular to each other. The extended ends abut against the inner wall of the circular tube 9. During installation, one of the support arms 10.1 is vertically upward. The circular tube 9 and the support part 10 are integrally formed. The support part 10 and the inner wall of the circular tube 9 form four mutually separated placement cavities. The two threading ropes 4.3 inside the initial reserved tube 4.1 are placed in the two opposite placement cavities respectively.

[0029] The reserved pipe assembly 4 also includes a horizontal connecting pipe 4.4 arranged perpendicular to the thickness of the diaphragm wall, with its two ends connected to the starting reserved pipe 4.1 and the ending reserved pipe 4.2 respectively, forming a horizontal square structure. The connecting assembly 5 is located between two adjacent reserved pipe assemblies 4, including four vertical connecting pipes 5.1 arranged vertically at the vertical edge of the post-cut hole area 2. The two vertical connecting pipes 5.1 near the starting reserved pipe 4.1 are connected to the starting reserved pipes 4.1 above and below respectively; the two vertical connecting pipes 5.1 near the ending reserved pipe 4.2 are connected to the ending reserved pipes 4.2 above and below respectively, forming a rectangular structure.

[0030] The uppermost pre-reserved tube 4.1 is connected to two vertically upward closed tubes 6 at both ends. The end of the closed tube 6 away from the pre-reserved tube 4.1 is equipped with a sealing cap 7. The end of the sealing cap 7 facing the sealing tube is equipped with a hook 8 for wrapping and fixing one end of the threading rope 4.3.

[0031] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A post-cut hole diaphragm wall structure, characterized in that: It includes a diaphragm wall body (1), which is formed by integrally pouring concrete onto a steel frame and has post-cut hole areas (2) on both sides. A pre-reserved pipe rack (3) is provided in the post-cut hole area (2). It includes a plurality of pre-reserved pipe assemblies (4) arranged vertically at intervals along the post-cut hole area (2) and a connecting assembly (5) for connecting the multiple sets of pre-reserved pipe assemblies (4) to each other. The pre-reserved pipe assembly (4) includes a starting pre-reserved pipe (4.1) and a ending pre-reserved pipe (4.2) arranged along the thickness direction of the diaphragm wall body (1). The starting pre-reserved pipe (4.1) and the ending pre-reserved pipe (4.2) are arranged opposite to each other in the post-cut hole area (2). On both sides, at least two threading ropes (4.3) are provided in the starting reserved tube (4.1). The threading ropes (4.3) are used to connect the cutting rope when cutting the hole area (2) after cutting. One set of cutting ropes of the starting reserved tube (4.1) cuts vertically upward to the upper starting reserved tube (4.1) and then cuts horizontally to the upper termination reserved tube (4.2). The other set cuts horizontally to the termination reserved tube (4.2) and then cuts vertically upward to the upper termination reserved tube (4.2) to achieve cutting.

2. The diaphragm wall structure with post-cut holes according to claim 1, characterized in that: The starting reserved tube (4.1) and the ending reserved tube (4.2) both include an outer circular tube body (9) and a middle support part (10). The support part (10) has four support arms (10.1) that extend radially outward from the axis of the circular tube body (9) and are perpendicular to each other. The extended ends of the support arms (10.1) abut against the inner wall of the circular tube body (9). During installation, one of the support arms (10.1) is vertically upward.

3. The diaphragm wall structure with post-cut holes according to claim 2, characterized in that: The cylindrical tube (9) and the support (10) are integrally formed, wherein the support (10) and the inner wall of the cylindrical tube (9) form four mutually separated placement cavities, and the two threading ropes (4.3) in the initial reserved tube (4.1) are respectively set in the two opposite placement cavities.

4. The diaphragm wall structure with post-cut holes according to claim 1, characterized in that: The reserved pipe assembly (4) also includes a transverse connecting pipe (4.4) arranged perpendicular to the thickness of the diaphragm wall. The two ends of the transverse connecting pipe (4.4) are connected to the starting reserved pipe (4.1) and the ending reserved pipe (4.2) respectively to form a horizontal square structure.

5. A post-cut hole diaphragm wall structure according to claim 4, characterized in that: The connecting component (5) is disposed between two adjacent pre-reserved pipe components (4), and includes four vertical connecting pipes (5.1) vertically arranged at the vertical edge of the post-cut hole area (2). The two vertical connecting pipes (5.1) closer to the starting pre-reserved pipe (4.1) are connected at both ends to the starting pre-reserved pipe (4.1) above and below them, respectively. The two vertical connecting pipes (5.1) closer to the ending pre-reserved pipe (4.2) are connected at both ends to the ending pre-reserved pipe (4.2) above and below them, respectively, to form a rectangular structure.

6. The diaphragm wall structure with post-cut holes according to claim 5, characterized in that: Both ends of the uppermost pre-reserved tube (4.1) are connected to closed tubes (6). The closed tubes (6) are arranged vertically upwards, and a sealing cap (7) is installed at the end away from the pre-reserved tube (4.1). A hook (8) is provided at the end of the sealing cap (7) facing the sealing tube. The hook (8) is used to wrap and fix one end of the threading rope (4.3).

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