Wall body structure with reserved underground space communicating connector and construction method of wall body structure

Abstract

The invention relates to the technical field of underground engineering construction, and discloses a wall structure with a reserved underground space communicating connector and a construction method of the wall structure. The wall body structure comprises a main wall body, a supporting ring beam and a steel wall box body. The supporting ring beam is pre-buried in the main wall body, and a plurality of lock holes are formed in the inner side wall; the steel wall box body is arranged at the position of an inner through hole of the supporting ring beam and comprises a box body structure, an elastic lock catch structure and a retraction control structure, the elastic lock catch structure comprises a spring bolt capable of popping up and can be inserted into a lock hole to achieve fixed connection, and the retraction control structure can control the spring bolt to retract so that the steel wall box body can be separated from the supporting ring beam. During construction, the steel wall box body is embedded into the supporting ring beam, then the main wall body concrete is poured to form a whole, and when communication is needed, the steel wall box body and the supporting ring beam are separated through the retraction control structure, so that underground space communication is achieved. Communication construction of the underground space in the later period is facilitated, and the construction efficiency and the construction quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of underground engineering building structure, and particularly relates to a wall structure of reserved underground space communication interface and a construction method thereof. BACKGROUND

[0002] With the acceleration of urbanization and the continuous deepening of the development and utilization of underground space, the construction of underground structures is increasing, and the demand for the communication of underground space is becoming more and more urgent. In the process of underground structure construction, it is often necessary to realize the spatial communication between the newly built underground structure and the existing underground structure to form a complete underground space network.

[0003] In the past, most underground structures were supporting facilities of above-ground buildings, such as underground garages, underground shopping malls, etc. They were separated from each other and operated independently, showing the characteristics of isolated units. With the continuous development of urban underground space, it is often necessary to realize the spatial communication with the constructed underground structure during the construction of underground structure. During the construction, the reinforced concrete structure at the communication interface needs to be broken, and then strengthening measures and waterproof structure need to be set. However, the thickness of the reinforced concrete wall in the existing structure is large, which not only increases the construction difficulty of cutting and breaking, but also causes serious damage to the wall structure, thereby affecting the quality and service life of the underground passage.

[0004] Therefore, it is necessary to study a wall structure of reserved underground space communication interface and a construction method thereof without damaging the original wall and the force system. SUMMARY

[0005] The present application provides a wall structure of reserved underground space communication interface and a construction method thereof, which reserves the underground space communication interface on the wall structure of underground space, creates conditions for subsequent realization of the mutual penetration of underground space, and solves the problem of great construction difficulty and influence on the structural safety of the wall structure caused by the need to break the reinforced concrete structure during the communication of underground space in the prior art.

[0006] To solve the above technical problems, the present application includes the following technical solutions:

[0007] A wall structure of reserved underground space communication interface, comprising:

[0008] a main wall, which is a reinforced concrete structure;

[0009] a support ring beam, which is pre-buried in the main wall, the thickness of the support ring beam matches the thickness of the main wall, and the inner hole of the support ring beam is perpendicular to the main wall; a plurality of lock holes are arranged on the inner side wall of the support ring beam in the circumferential direction;

[0010] A steel-walled box body, located within the internal through-hole of the supporting ring beam, includes a box structure, an elastic locking structure, and a retraction control structure. The box structure is a hollow steel structure, its shape matching the internal through-hole of the supporting ring beam. The elastic locking structure is located within the cavity of the box structure and includes several pop-out latches, the positions of which match the lock holes. The latches can be inserted into the lock holes to achieve a fixed connection between the box structure and the supporting ring beam. The retraction control structure is located within the cavity of the box structure and can control the retraction of the latches, allowing the box structure to separate from the supporting ring beam.

[0011] Furthermore, the box structure includes a first end plate, a second end plate, and an edge sealing side plate. The first end plate and the second end plate are arranged in parallel and spaced apart. The edge sealing side plate connects the first end plate and the second end plate into one piece and forms a cavity structure inside. The edge sealing side plate is provided with a through hole at the position corresponding to the locking tongue.

[0012] Furthermore, the first and second end plates of the box structure are both circular steel plates, with the diameter of the first end plate being smaller than that of the second end plate, and the box structure is a frustum structure.

[0013] The internal through-holes of the supporting ring beam are funnel-shaped, matching the contour of the box structure.

[0014] Furthermore, the elastic locking structure includes several latches, a first baffle, a second baffle, and a spring; one end of each latch facing inward is fixed perpendicularly to the first baffle, the second baffle is spaced apart from the first baffle, and a spring is provided between the first baffle and the second baffle, with both ends of the spring fixedly connected to the first baffle and the second baffle respectively; a through hole is provided at the position of the housing structure corresponding to the latch, the second baffle is fixedly connected to the housing structure, and under the elastic force of the spring, the first baffle moves away from the second baffle, causing the latch to extend out of the through hole.

[0015] Furthermore, the retraction control structure includes a rotating shaft, a drum, a locking rope, and an operating handle; the rotating shaft is mounted on the housing structure via bearings, the drum is sleeved on the rotating shaft, one end of the locking rope is wound around the drum, and the other end is fixedly connected to the first baffle; the operating handle enables the rotating shaft to rotate, causing the rope to wind around the drum and retracting the locking tongue.

[0016] Furthermore, the operating handle and the rotating shaft are detachably connected. One end of the rotating shaft is connected to a hollow bushing. The inner side wall of the bushing is symmetrically provided with sliding grooves. One end of the operating handle can be inserted into the hollow part of the bushing. The side wall of the insertion section of the operating handle is symmetrically provided with protrusions. The protrusions can be locked in the sliding grooves, so that the bushing and the operating handle rotate together.

[0017] Furthermore, several T-shaped components are spaced apart along the circumferential direction on the outer wall of the supporting ring beam. The vertical ends of the T-shaped components are welded and fixed perpendicularly to the supporting ring beam, and the horizontal sides of the T-shaped components are cast into the concrete of the main wall.

[0018] Correspondingly, the application also provides a construction method of the wall structure of the reserved underground space communication interface, comprising the following steps:

[0019] Step one, embed the steel wall box into the support ring beam, match the lock tongue with the lock hole position, insert the lock tongue into the lock hole, and install the combined steel wall box and support ring beam in a suitable position;

[0020] Step two, bind the steel bars of the main wall body, and cast the concrete of the main wall body to form an integral whole with the support ring, and then remove the formwork;

[0021] Step three, construct the existing underground structure on one side of the wall structure.

[0022] Further, a plurality of T-shaped components are arranged on the outer wall of the support ring beam in the circumferential direction at intervals;

[0023] In step two, the T-shaped components are welded and fixed with the steel bars of the main wall body.

[0024] Further, when constructing the post-construction underground structure on the other side of the wall structure, the method further comprises:

[0025] Step four, excavate the soil on the other side of the wall structure;

[0026] Step five, retract the lock tongue from the lock hole by controlling the structure to retract, separate the steel wall box from the support ring beam, and remove the steel wall box;

[0027] Step six, construct the post-construction underground structure on the other side of the wall structure, and the post-construction underground structure is in communication with the existing underground structure.

[0028] Compared with the prior art, the wall structure of the reserved underground space communication interface and the construction method thereof have the following advantages and positive effects: the support ring beam is cast in the main wall body, the support ring beam and the main wall body form an integral whole, the lock tongue of the elastic lock structure of the steel wall box is inserted into the lock hole of the support ring beam, the steel wall box is locked with the support ring beam, so that the main wall body, the support steel beam and the steel wall box form an integral wall structure, when constructing the post-construction underground structure, only the lock tongue needs to be retracted from the lock hole, the steel wall box is separated from the support ring beam, the mutual penetration of the underground space between the existing underground structure and the post-construction underground structure is realized, the post-construction construction process of the wall body is omitted, the original wall structure system is not damaged, the construction process of the underground space communication is simplified, the construction difficulty is reduced, the quality and service life of the underground passage are guaranteed. In addition, the steel wall box can be recycled, the amount of steel bars used in the wall structure is reduced, the cost is saved, the environmental pollution is small, and green construction is realized. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 This is a schematic diagram of the wall structure for reserving an underground space connection interface in one embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the supporting ring beam in one embodiment of the present invention;

[0031] Figure 3 for Figure 2 Sectional view along the middle AA;

[0032] Figure 4 This is a schematic diagram of the steel wall box structure in one embodiment of the present invention;

[0033] Figure 5 for Figure 4 A sectional view along the middle edge BB;

[0034] Figure 6 This is a schematic diagram of the elastic locking structure and retraction control structure provided in an embodiment of the present invention;

[0035] Figures 7 to 11 This is a schematic diagram of a construction method for a wall structure with a reserved underground space connection interface provided in an embodiment of the present invention.

[0036] The numbers in the diagram are as follows:

[0037] 1-Wall structure; 2-Existing underground structure; 3-Soil; 4-Ring lining; 5-Post-constructed underground structure;

[0038] 10-Main wall;

[0039] 20-Supporting ring beam; 21-Through hole; 22-Lock hole; 23-T-shaped component; 24-Waterproof material;

[0040] 30-Steel wall box; 31-Box structure; 311-First end plate; 312-Second end plate; 313-Side sealing plate; 314-Steel plate rib; 315-Through hole; 32-Elastic locking structure; 321-Lock tongue; 322-First baffle; 323-Second baffle; 324-Spring; 33-Retraction control structure; 331-Rotating shaft; 332-Drum; 333-Locking rope; 334-Operating handle. Detailed Implementation

[0041] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the wall structure and construction method for the reserved underground space connection interface provided by the present invention. The advantages and features of the present invention will become clearer with the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0042] Example 1

[0043] like Figure 1 As shown, the wall structure for the reserved underground space connection interface provided in this embodiment includes a main wall 10, a supporting ring beam 20, and a steel wall box 30.

[0044] The main wall 10 is made of reinforced concrete, which has sufficient strength and stability to meet the load-bearing requirements of the underground space wall.

[0045] Combination Figures 1 to 3 As shown, the support ring beam 20 is pre-embedded in the main wall 10. The thickness of the support ring beam 20 matches the thickness of the main wall 10, allowing it to be inserted into the main wall 10 during its pouring without affecting the formwork and ensuring the overall structural stability. The internal through-hole 21 of the support ring beam 20 is perpendicular to the main wall 10, serving as a connection channel for later use. Several locking holes 22 are provided along the circumferential direction on the inner sidewall of the support ring beam 20. These locking holes 22 are used to engage with the locking tongue on the steel wall box 30 for fixed connection. For example, the internal through-hole 21 of the support ring beam 20 is trumpet-shaped. This design gives the through-hole a specific geometric shape, facilitating the installation and disassembly of the steel wall box 30. Preferably, several T-shaped members 23 are spaced along the circumferential direction on the outer sidewall of the support ring beam 20. The vertical ends of the T-shaped members 23 are welded perpendicularly to the support ring beam 20, and the horizontal sides of the T-shaped members are cast into the concrete of the main wall 10. This T-shaped component design enhances the connection strength between the support ring beam 20 and the main wall 10, preventing the support ring beam 20 from detaching from the main wall 10. For example, the T-shaped component 23 can be a stud or a welded steel plate.

[0046] Combination Figures 1 to 5As shown, the steel wall box 30 is arranged in the inner through hole 21 of the support ring beam 20, including a box structure 31, an elastic lock structure 32 and a retraction control structure 33. The box structure 31 is a steel structure with a cavity, which is matched in shape with the inner through hole of the support ring beam 20, ensuring that it can be tightly fitted during installation. The box structure 31 and the support ring beam 20 can be sealed by a waterproof material 24, such as a polyurethane waterproof strip, so that the steel wall box 30 has a waterproof function. As an example, the box structure 31 includes a first end plate 311, a second end plate 312 and an edge side plate 313. The first end plate 311 and the second end plate 312 are arranged in parallel and spaced apart. The edge side plate 313 connects the first end plate 311 and the second end plate 312 into a whole and forms a cavity structure inside. The edge side plate 313 is provided with a through hole 315 at a position corresponding to the lock tongue. After the lock tongue extends out of the through hole, it can cooperate with the lock hole 22 on the support ring beam 20. Preferably, the first end plate and the second end plate of the box structure 31 are both circular steel plates. The diameter of the first end plate is smaller than that of the second end plate, so that the box structure 31 has a circular truncated cone structure, facilitating installation and removal. This design is matched with the trumpet-shaped inner through hole of the support ring beam 20. The elastic lock structure 32 is arranged in the cavity of the box structure 31 and mainly realizes the lock connection between the box structure 31 and the support ring beam 20. As an example, the elastic lock structure 32 includes a plurality of lock tongues 321 that can be popped out. The position of the lock tongue 321 is matched with the lock hole 22. The lock tongue 321 can be inserted into the lock hole 22 to realize the fixed connection between the box structure 31 and the support ring beam 20. In a specific embodiment, the elastic lock structure 32 includes a plurality of lock tongues 321, a first baffle 322, a second baffle 323 and a spring 324. Each lock tongue has one end perpendicular to the first baffle. The second baffle is arranged in spaced apart relationship with the first baffle. The spring is arranged between the first baffle and the second baffle. The two ends of the spring are fixedly connected with the first baffle and the second baffle, respectively. The box structure 31 is provided with a through hole at a position corresponding to the lock tongue. The second baffle is fixedly connected with the box structure 31. Under the action of the spring force, the first baffle moves away from the second baffle, so that the lock tongue extends out of the through hole. This design enables the lock tongue to automatically extend out under the action of the spring force and cooperate with the lock hole 22 on the support ring beam 20, realizing the self-locking function.The retraction control structure 33 is arranged in the cavity of the box structure 31, and is used for controlling the retraction of the lock tongue, so that the box structure 31 is separated from the support ring beam 20. For example, the retraction control structure 33 includes a rotating shaft 331, a winding drum 332, a lock rope 333 and an operating handle 334. The rotating shaft is arranged on the box structure 31 through a bearing, the winding drum is sleeved on the rotating shaft, one end of the lock rope is wound on the winding drum, and the other end is fixedly connected with the first baffle. The operating handle can rotate the rotating shaft, so that the rope is wound on the winding drum, and the lock tongue is retracted into the through hole. When the steel wall box 30 needs to be taken out, the rotating shaft is rotated through the operating handle, the lock rope is tightened, the first baffle is moved to the direction of the second baffle against the spring force, so that the lock tongue is retracted into the through hole, and the steel wall box 30 is separated from the support ring beam 20. For example, the lock tongue is a steel pipe, and a waterproof sleeve can be arranged at the end of the lock tongue. The lock rope is a steel wire rope.

[0047] In a preferred embodiment, the operating handle 334 and the rotating shaft 331 are detachably arranged. One end of the rotating shaft is connected with a hollow shaft sleeve, symmetrically arranged with sliding grooves on the inner side wall of the shaft sleeve. One end of the operating handle can be inserted into the hollow part of the shaft sleeve. Symmetrically arranged with protrusions on the side wall of the inserted section of the operating handle, the protrusions can be buckled in the sliding grooves, so that the shaft sleeve rotates together with the operating handle. This detachable design makes the operating handle not need to be resident on the steel wall box 30, and only needs to be installed and used when the steel wall box 30 needs to be taken out, avoiding the safety hidden danger and space occupation problem caused by long-term exposure of the operating handle.

[0048] When the wall structure 1 is constructed, the steel wall box 30 is first installed at the internal through hole of the support ring beam 20. Under the action of the spring force, the lock tongue automatically extends and is inserted into the lock hole 22 on the inner side wall of the support ring beam 20, realizing the fixed connection of the steel wall box 30 and the support ring beam 20. Then, the main wall 10 is constructed in a conventional manner. When the underground space communication interface needs to be opened, the operating handle is inserted into the hollow shaft sleeve at the end of the rotating shaft, the protrusions are buckled into the sliding grooves, and then the operating handle is rotated, so that the rotating shaft drives the winding drum to rotate, the lock rope is tightened and pulls the first baffle, so that the lock tongue is retracted into the through hole. At this time, the steel wall box 30 is separated from the support ring beam 20, and the steel wall box 30 can be taken out, forming a communication passage of the underground space.

[0049] This wall structure reserving the underground space communication interface realizes the reserving function of the underground space communication interface by pre-burying the support ring beam 20 in the main wall 10 and cooperating with the detachable steel wall box 30. When the underground space needs to be communicated, the steel wall box 30 only needs to be taken out, without damaging the wall structure 1, greatly improving the construction efficiency and reducing the construction cost, while ensuring the integrity and safety of the wall structure 1.

[0050] Embodiment two

[0051] The embodiment provides a construction method of a wall structure reserving a communication interface of underground space, which can reserve the communication interface in the construction process of the underground structure and facilitates the communication of the underground space in the later period. The method specifically comprises the following steps.

[0052] Step one, embed the steel wall box 30 in the support ring beam 20, match the position of the lock tongue 321 and the lock hole 22, insert the lock tongue 321 into the lock hole 22, and install the combined steel wall box 30 and support ring beam 20 in a suitable position.

[0053] The structure of the steel wall box 30 and the support ring beam 20 is the same as that described in the first embodiment. The steel wall box 30 comprises a box structure 31, an elastic lock structure 32 and a retraction control structure 33. In the installation process, the steel wall box 30 is inserted into the trumpet-shaped internal through hole 21 of the support ring beam 20 with the small end of the steel wall box 30 facing forward. Due to the action of the spring 324 in the elastic lock structure 32, the lock tongue 321 is automatically popped out and inserted into the lock hole 22 on the inner wall of the support ring beam 20, so that the steel wall box 30 and the support ring beam 20 are fixedly connected.

[0054] Step two, bind the steel bars of the main wall body 10, and erect the formwork to pour the concrete of the main wall body 10, so that the main wall body 10 and the support ring beam form an integral whole, and the formwork is removed.

[0055] In this step, first, the steel bar net of the main wall body 10 is bound according to the design requirements. When the T-shaped members 23 are arranged on the outer wall of the support ring beam 20 in the circumferential direction, the T-shaped members 23 are welded and fixed with the steel bars of the main wall body 10, so that the support ring beam 20 and the main wall body 10 form a firm integral whole. The horizontal edge of the T-shaped member 23 is completely poured in the concrete of the main wall body 10, so that the connection strength is enhanced. Then, the formwork is erected and the concrete of the main wall body 10 is poured, so that the concrete can fully fill the space in the formwork, especially the area around the support ring beam 20, so that defects such as honeycomb and hole are avoided. After the concrete reaches a certain strength, the formwork is removed, and the construction of the main wall body 10 is completed.

[0056] Step three, construct the underground structure on one side of the wall structure 1, and form the existing underground structure 2.

[0057] In the side of the wall structure 1, the underground structure is constructed according to the design requirements, including the foundation, column, beam, plate and other components, forming the existing underground structure 2. During the construction process, attention should be paid to the protection of the reserved connecting interface part to avoid damage to the steel wall box 30 and the support ring beam 20. As an example, the top or bottom of the support ring beam 20 is consistent with the floor slab height, and when the existing underground structure 2 is constructed, holes are drilled on one side of the support ring beam 20 to plant reinforcement, so that the support ring beam 20 and the floor slab of the existing underground structure 2 form an integral structure. When the post-construction underground structure 5 is constructed, holes are drilled on the other side of the support ring beam 20 to plant reinforcement, so that the support ring beam 20 and the floor slab of the post-construction underground structure 5 form an integral structure, thereby enhancing the integrity of the existing underground structure 2 and the post-construction underground structure 5.

[0058] In a preferred embodiment, when the post-construction underground structure 5 needs to be constructed on the other side of the wall structure 1, the following steps are also performed:

[0059] Step four, excavate the soil 3 on the other side of the wall structure 1.

[0060] According to the design requirements, the soil on the other side of the wall structure 1 is excavated to form the construction space of the post-construction underground structure 5. During the excavation process, necessary support measures should be taken to ensure the stability of the excavation surface and prevent the deformation of the soil around the wall structure 1.

[0061] Step five, retract the locking tongue 321 from the lock hole 22 by the retraction control structure 33, separate the steel wall box 30 from the support ring beam 20, and remove the steel wall box 30.

[0062] First, insert the operating handle 334 into the hollow shaft sleeve at the end of the shaft 331, so that the protrusion of the operating handle is clamped into the sliding groove on the inner wall of the shaft sleeve. Then rotate the operating handle to rotate the shaft 331 and the reel 332, causing the locking rope 333 to tighten and pull the first baffle to move against the spring force in the direction of the second baffle. This process causes the locking tongue to retract from the lock hole 22 of the support ring beam 20 into the through hole of the box structure 31, achieving the separation of the steel wall box 30 from the support ring beam 20. Finally, remove the steel wall box 30 to expose the internal through hole of the support ring beam 20, forming a connecting channel.

[0063] When the steel wall box 30 is removed, a lining ring can be provided on the inner wall of the support ring beam 20 to change the trumpet-shaped internal through hole to a cylindrical through hole, so that the shape of the channel remains consistent. The lining ring can be composed of multiple lining pieces welded together.

[0064] Step six, construct the post-construction underground structure 5 on the other side of the wall structure 1, and connect the post-construction underground structure 5 with the existing underground structure 2.

[0065] After the wall structure 1 is constructed on the other side according to the design requirements, the underground structure 5 is constructed, including foundation, column, beam, plate and other components. Through the reserved communication interface, the underground structure 5 and the existing underground structure 2 form a communication channel, realizing the connection of the two underground spaces.

[0066] Through the above construction method, the communication interface can be reserved during the construction of the underground structure, avoiding destructive construction on the wall during the later communication, improving the construction efficiency, reducing the construction cost, and ensuring the integrity and safety of the wall structure 1. This method is especially suitable for the phased construction and later communication of urban underground space, and has good engineering application value.

[0067] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0068] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A wall structure with reserved underground space connection interface, characterized in that, include: The main wall is a reinforced concrete structure; The support ring beam is embedded in the main wall. The thickness of the support ring beam matches the thickness of the main wall. The through holes inside the support ring beam are perpendicular to the main wall. Several locking holes are provided on the inner side wall of the support ring beam along the circumferential direction. A steel-walled box body, located within the internal through-hole of the supporting ring beam, includes a box structure, an elastic locking structure, and a retraction control structure. The box structure is a hollow steel structure, its shape matching the internal through-hole of the supporting ring beam. The elastic locking structure is located within the cavity of the box structure and includes several pop-out latches, the positions of which match the lock holes. The latches can be inserted into the lock holes to achieve a fixed connection between the box structure and the supporting ring beam. The retraction control structure is located within the cavity of the box structure and can control the retraction of the latches, allowing the box structure to separate from the supporting ring beam.

2. The wall structure with reserved underground space connection interface as described in claim 1, characterized in that, The box structure includes a first end plate, a second end plate, and a sealing side plate. The first end plate and the second end plate are arranged in parallel and spaced apart. The sealing side plate connects the first end plate and the second end plate into one piece and forms a cavity structure inside. The sealing side plate is provided with a through hole at the position corresponding to the locking tongue.

3. The wall structure with reserved underground space connection interface as described in claim 2, characterized in that, The first and second end plates of the box structure are both circular steel plates. The diameter of the first end plate is smaller than that of the second end plate, and the box structure is a frustum structure. The internal through-holes of the supporting ring beam are funnel-shaped, matching the contour of the box structure.

4. The wall structure with reserved underground space connection interface as described in claim 1, characterized in that, The elastic locking structure includes several latches, a first baffle, a second baffle, and a spring. The inner end of each latch is fixed perpendicularly to the first baffle. The second baffle is spaced apart from the first baffle. A spring is provided between the first baffle and the second baffle, and the two ends of the spring are fixedly connected to the first baffle and the second baffle, respectively. A through hole is provided at the position of the housing structure corresponding to the latch. The second baffle is fixedly connected to the housing structure. Under the elastic force of the spring, the first baffle moves away from the second baffle, causing the latch to extend out of the through hole.

5. The wall structure with reserved underground space connection interface as described in claim 1, characterized in that, The retraction control structure includes a rotating shaft, a drum, a locking rope, and an operating handle. The rotating shaft is mounted on the housing structure via bearings, the drum is sleeved on the rotating shaft, one end of the locking rope is wound around the drum, and the other end is fixedly connected to the first baffle. The operating handle enables the rotating shaft to rotate, causing the rope to wind around the drum and retracting the locking tongue.

6. The wall structure with reserved underground space connection interface as described in claim 1, characterized in that, The operating handle and the rotating shaft are detachably connected. One end of the rotating shaft is connected to a hollow bushing. The inner side wall of the bushing is symmetrically provided with sliding grooves. One end of the operating handle can be inserted into the hollow part of the bushing. The side wall of the insertion section of the operating handle is symmetrically provided with protrusions. The protrusions can be locked in the sliding grooves, so that the bushing and the operating handle rotate together.

7. The wall structure with reserved underground space connection interface as described in claim 1, characterized in that, Several T-shaped components are spaced apart along the circumferential direction on the outer wall of the support ring beam. The vertical ends of the T-shaped components are welded and fixed perpendicularly to the support ring beam, and the horizontal sides of the T-shaped components are cast into the concrete of the main wall.

8. The construction method of the wall structure with reserved underground space connection interface as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Step 1: Embed the steel wall box into the support ring beam, match the lock tongue with the lock hole, insert the lock tongue into the lock hole, and install the combined steel wall box and support ring beam in the appropriate position. Step 2: Tie the reinforcing bars of the main wall, erect the formwork and pour the concrete of the main wall to form an integral whole with the supporting ring, and then remove the formwork; Step 3: Construct the underground structure on one side of the wall structure to form the existing underground structure.

9. The construction method of the wall structure with reserved underground space connection interface as described in claim 8, characterized in that, Several T-shaped components are spaced apart along the circumferential direction on the outer wall of the supporting ring beam. In step two, the T-shaped component is welded and fixed to the steel reinforcement of the main wall.

10. The construction method of the wall structure with reserved underground space connection interface as described in claim 8, characterized in that, When constructing the underground structure after completing the work on the other side of the wall structure, it also includes: Step 4: Excavate the soil on the other side of the wall structure; Step 5: Using the retraction control structure, the bolt retracts from the lock hole, separating the steel wall box from the supporting ring beam, and then the steel wall box is removed. Step 6: After constructing the underground structure on the other side of the wall structure, the underground structure will be connected to the existing underground structure.

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