Underground space communication structure

Abstract

The invention provides an underground space communication structure, which is characterized in that a steel wall box body structure is placed at a position, where a hole needs to be reserved, on a wall body to be constructed, and the steel wall box body structure comprises two steel plates, a rectangular steel wall box body with a lock catch system and a pull rod mechanism, the rectangular steel wall box body with the lock catch systems comprises a steel box body wall and a plurality of lock catch systems, the lock catch systems are arranged in the steel box body wall, and the upper ends and the lower ends of all the lock catch systems can retract into the steel box body wall only by pulling a pull rod mechanism; the rectangular steel wall box body with the lock catch system can be taken out by cutting the steel plates on the periphery of the rectangular steel wall box body with the lock catch system, a wall body is prevented from being chiseled away in the later period, construction is convenient, the construction difficulty is lowered, and an original wall body structure is effectively protected. And moreover, the rectangular steel wall box body with the lock catch system can be recycled, so that the use amount of reinforcing steel bars is reduced.

Description

Technical Field

[0001] This invention belongs to the field of urban underground space connectivity technology, and relates to an underground space connectivity structure. Background Technology

[0002] With the gradual rise of underground space structures, in the construction of urban underground spaces, due to construction constraints and consideration of long-term planning and development, it is necessary to reserve multiple connecting interfaces in the main structure of the underground space to facilitate the connection of underground spaces in the future.

[0003] Traditionally, underground spaces have mostly existed as appendages to above-ground structures, such as underground parking garages and shopping malls. They are characterized by being independent units that are "separate from each other and each operating independently." However, nowadays, urban underground spaces are gradually showing a trend of integration and connection. For traditional underground spaces, their walls do not have pre-reserved openings for connection.

[0004] The general construction method for removing traditional walls without pre-reserved openings is as follows: First, remove the concrete at the lintel location to reinforce the lintel and install a waterproof structure. After the lintel reaches the design strength, remove the concrete at the hidden column locations on both sides to reinforce the hidden columns and install a waterproof structure. After the hidden columns reach the design strength, remove the remaining part of the wall to form a connecting doorway.

[0005] The drawback of this approach is that while the existing reinforced concrete structure is broken down and reinforced and waterproofed, the large thickness of the existing reinforced concrete wall increases the difficulty of cutting and breaking it down. At the same time, it severely damages the reinforced concrete wall structure, affecting the quality and service life of the reinforced concrete underground passage.

[0006] Therefore, how to study an underground space connection structure that can reduce the difficulty of construction without damaging the original walls and load-bearing system is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0007] The present invention aims to provide an underground space connection structure that is easy to construct. During the construction of underground space, it can serve as part of the wall to provide enclosure. When the underground spaces on both sides of the wall need to be connected, the connection between the underground spaces on both sides of the wall can be achieved without damaging the original wall and load-bearing system.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0009] An underground space connectivity structure includes a steel wall box structure for underground space connectivity, installed at a location on a wall where an opening needs to be reserved. The steel wall box structure for underground space connectivity includes: two steel plates, a rectangular steel wall box with a self-locking system, and a tie rod mechanism. The rectangular steel wall box with the self-locking system includes a steel box wall and multiple locking systems arranged within the steel box wall. The steel box wall is a structure consisting of a front panel, a back panel, a top panel, a bottom panel, and two side panels. The steel box wall is composed of rectangular panels. Two steel plates are fixed to the perimeter of the front panel and the perimeter of the back panel, respectively. Each steel plate is rectangular and has an opening in the center to accommodate the steel box wall. The front and back panels of the steel box wall are flush with the two steel plates. Several vertically arranged slots are provided on the front or back panel of the steel box wall, the number of which is the same as the number of locking systems. The top and bottom plates of the steel box wall have openings for the upper and lower parts of the locking systems. The lower end protrudes through a through hole, allowing the locking system to pass through the corresponding slot and be fixedly connected to the tie rod mechanism via hinge bolts. By pulling the tie rod mechanism, the upper and lower ends of all locking systems protrude from the corresponding through holes in the steel box wall. An Ω-shaped rubber water-stop cap is installed on each of the upper and lower ends of the locking systems protruding from the corresponding through holes in the steel box wall. Before pouring the wall concrete, long wooden beams are used to seal the slots and fix the ends of the locking systems used to connect to the tie rod mechanism, thus securing the self-locking systems. The reinforcing bars of the remaining walls surrounding the rectangular steel wall box are reinforced with additional steel plates on the upper and lower sides of the steel box wall. Concrete is then poured using formwork to create a unified wall structure between the steel wall box and the surrounding remaining walls. Lintels are formed on the upper and lower sides of the rectangular steel wall box with its own locking system, and concealed columns are formed on the left and right sides of the rectangular steel wall box with its own locking system.

[0010] Preferably, in the underground space connection structure described above, the locking system includes two springs, two first steel pipe locks, one solid steel pipe, two hollow steel pipe hoists, two hoist handles, two first force transmission steel pipes, and a triangular steel plate. Each first steel pipe lock includes a hollow pipe, a solid pipe, and two steel pipe purlin supports. One end of the hollow pipe is coaxially connected to one end of the solid pipe. The two steel pipe purlin supports and one hollow steel pipe hoist are respectively fitted onto the other end of the hollow pipe, and the two steel pipe purlin supports are located on the upper and lower sides of the hollow steel pipe hoist. The two steel pipe purlin supports are fixedly connected to the hollow pipe. One of the hoist handles... The end is fixedly connected to the corresponding hollow steel pipe hoist. The triangular steel plate is a triangular plate. The three corners of the triangular steel plate are respectively hinged to the other ends of the two first force transmission steel pipes and the pull rod mechanism through hinge bolts. The two ends of the solid steel pipe extend into the hollow tubes of the two first steel pipe locks. The two springs are respectively set on both sides of the solid steel pipe and located in the hollow tubes of the corresponding first steel pipe locks. The two ends of the springs are respectively fixedly connected to the solid tubes of the corresponding first steel pipe locks and the corresponding ends of the solid steel pipes. The springs are compression springs. In their natural state, the springs push the solid tubes away from the solid steel pipes.

[0011] Preferably, in the underground space connection structure described above, the tie rod mechanism includes a steel pipe beam and several second force transmission steel pipes. Each second force transmission steel pipe corresponds to one of the locking systems. One end of each second force transmission steel pipe is provided with a threaded section. The steel pipe beam is provided with several internal threaded holes along its own axial direction that match the threaded sections of each of the second force transmission steel pipes. The three corners of the triangular steel plate are respectively hinged to the other ends of the two first force transmission steel pipes and the other ends of the second force transmission steel pipes by hinge bolts.

[0012] Preferably, in the underground space connection structure described above, by horizontally pulling the steel pipe beam away from the steel box wall, the angle between the two first force-transmitting steel pipes decreases. The two first force-transmitting steel pipes drive the corresponding first steel pipe latches to move closer to each other along the axial direction of the solid steel pipe, causing the corresponding solid pipe to retract into the steel box wall. This means that the upper and lower ends of all latching systems are retracted into the steel box wall. By horizontally pushing the steel pipe beam towards the steel box wall, the angle between the two first force-transmitting steel pipes increases. The two first force-transmitting steel pipes drive the corresponding first steel pipe latches to move away from each other along the axial direction of the solid steel pipe, causing the corresponding solid pipe to extend out of the steel box wall through the corresponding through holes. This means that the upper and lower ends of the latching systems extend out of the steel box wall through the corresponding through holes.

[0013] Preferably, in the underground space connection structure described above, the locking system located on both sides further includes a second hoist handle and a second steel pipe lock. One end of the second hoist handle is fixedly connected to the hollow steel pipe hoist, and one end of the second steel pipe lock is hinged to the other end of the second hoist handle. Holes are respectively opened on the left and right side plates of the steel box wall for the other end of the corresponding second steel pipe lock to pass through. By pulling the pull rod mechanism, the second steel pipe lock can extend out of the steel box wall from the side of the steel box wall through the corresponding hole or retract into the steel box wall.

[0014] Preferably, in the underground space connection structure described above, when the part of the wall that needs to reserve an opening needs to connect the underground spaces on both sides, the long wooden rod at the slot is removed, the tie rod mechanism is connected to the corresponding locking system through hinge bolts, and the tie rod mechanism is pulled outward horizontally to make the upper and lower ends of all locking systems retract into the steel box wall; the steel plates around the steel wall box with the built-in locking system are cut with a cutting tool, the steel wall box with the built-in locking system is removed, and the hole at the Ω-shaped rubber waterstop cap is filled with concrete to form a connecting opening, thereby realizing the connection between the underground spaces on both sides.

[0015] As can be seen from the above-disclosed technical solutions, the beneficial effects of the present invention compared with the prior art are as follows:

[0016] This embodiment discloses an underground space connection structure, including a steel wall box structure for underground space connection, installed at the location where an opening needs to be reserved in the wall. The steel wall box structure for underground space connection includes: two steel plates, a rectangular steel wall box with a self-locking system, and a tie rod mechanism. The rectangular steel wall box with the self-locking system includes a steel box wall and multiple locking systems, which are arranged inside the steel box wall. The steel box wall is a structure consisting of a front panel, a back panel, a top plate, a bottom plate, and two... A cuboid composed of side panels; two steel plates are fixed to the perimeter of the front panel and the perimeter of the back panel of the steel box wall, respectively. Each steel plate is rectangular and has an opening in the center for accommodating the steel box wall. The front and back panels of the steel box wall are flush with the two steel plates. Several vertically arranged slots are provided on the front or back panel of the steel box wall, the number of which is the same as the number of the locking system. The top and bottom plates of the steel box wall have openings for the upper and lower ends of the locking system to extend. The locking system passes through the corresponding slot and is fixedly connected to the tie rod mechanism via hinge bolts. By pulling the tie rod mechanism, the upper and lower ends of all locking systems extend out of the corresponding through holes in the steel box wall. An Ω-shaped rubber water-stop cap is installed on each of the upper and lower ends of the locking systems extending out of the corresponding through holes in the steel box wall. Before pouring the wall concrete, the tie rod mechanism is removed from the locking system. Long wooden beams are used to seal the slots and fix the ends of the locking system used to connect the tie rod mechanism. The system is then bound... The reinforcing bars of the remaining walls surrounding the rectangular steel wall box with a locking system are reinforced with additional reinforcement between the steel plates on the upper and lower sides of the steel box wall. After formwork and concrete pouring, the steel wall box structure for underground space connectivity forms an integral wall with the surrounding remaining walls. Lintels are formed on the upper and lower sides of the rectangular steel wall box with the locking system, and concealed columns are formed on the left and right sides. In this underground space connectivity structure, when the steel wall box structure for underground space connectivity is pre-embedded in the wall, the upper and lower ends of the locking system extend from the corresponding through holes in the steel box wall before the wall is poured. This allows the upper and lower ends of the locking system and the steel plates to jointly resist the soil pressure on the wall, preventing the steel plates from breaking at the connection point with the steel box wall and ensuring the safety of the wall and foundation pit construction. When underground spaces need to be connected, i.e., when openings are needed in the walls, simply by pulling the lever mechanism, the upper and lower ends of all locking systems can be retracted into the steel box wall. The rectangular steel wall box with its own locking system can then be removed by cutting the steel plates around its perimeter. This avoids the need to chisel away the walls later, making construction more convenient and reducing the difficulty of construction, while also effectively protecting the original wall structure.Furthermore, by installing steel plates around the steel wall box with its self-locking system, it not only becomes part of the lintels and concealed columns, increasing their strength, but also creates a U-shaped path for groundwater flowing from the unexcavated side of the wall to the excavated side. This solves the problem of straight seepage at the openings in traditional methods, increases the seepage path of groundwater, and effectively reduces the risk of wall leakage. In addition, because the rectangular steel wall box with its self-locking system is recyclable, it reduces the amount of steel reinforcement used, saves costs, reduces environmental pollution, and achieves green construction. Moreover, since the steel wall box structure is pre-embedded in the wall, the upper and lower ends of the locking system extend from the corresponding through holes in the steel box wall before the wall is poured. This allows the upper and lower ends of the locking system and the steel plates to jointly resist the soil pressure on the wall, preventing the steel plates from breaking at the connection point with the steel box wall and ensuring the safety of the wall and foundation pit construction. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the steel wall box structure for underground space connectivity according to the present invention.

[0018] Figure 2 This is a schematic diagram of the assembly between the steel box wall and the steel plate in this invention.

[0019] Figure 3 This is a side view of the steel box wall in this invention.

[0020] Figure 4 This is a schematic diagram showing the distribution of the reinforcing ribs in this invention.

[0021] Figure 5 This is a schematic diagram of the assembly between the locking system and the pull rod mechanism in this invention.

[0022] Figure 6 This is an assembly diagram of the locking system and the pull rod mechanism located on both sides in this invention.

[0023] Figure 7 This is a schematic diagram of the structure of the first steel pipe lock in this invention.

[0024] Figure 8 This is a schematic diagram of the solid steel pipe structure in this invention.

[0025] Figure 9 This is a schematic diagram of the tie rod mechanism in this invention.

[0026] Figure 10 This is a structural diagram showing the upper and lower ends of the locking system retracting into the steel box wall.

[0027] Figure 11 This is a structural diagram showing the upper and lower ends of the locking system extending out of the steel box wall.

[0028] Figure 12 This is a schematic diagram of the steel wall box structure used for underground space connection in step 3 of the present invention.

[0029] Figure 13 yes Figure 12 AA sectional view.

[0030] Figure 14 This is a schematic diagram of the steel wall box structure used for underground space connection in step 4 of the present invention.

[0031] Figure 15 This is a schematic diagram of the steel wall box structure used for underground space connection in step 5 of the present invention.

[0032] Figure 16 This is a schematic diagram of the steel wall box structure used for underground space connection in step 6 of the present invention.

[0033] In the diagram: 1-Steel plate, 2-Steel box wall, 2.1-Slot, 2.2-Hole, 2.3-Reinforcing rib, 3-Locking system, 3.1-Spring, 3.2-First steel pipe lock, 3.2.1-Hollow pipe, 3.2.2-Solid pipe, 3.2.3-Steel pipe purlin support, 3.3-Solid steel pipe, 3.4-Hollow steel pipe hoist, 3.5-Hoist handle, 3.6-First force transmission steel pipe, 3.7-Triangular steel plate, 3.8-Second hoist handle, 3.9-Second steel pipe lock, 4-Pulley mechanism, 4.1-Steel pipe beam, 4.2-Second force transmission steel pipe, 5-Ω-type rubber waterstop cap, 6-Soil, 7-Wall, 8-Linette, 9-Hidden column, 10-Basement built first, 11-Floor slab, 12-Basement built later. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The technical content and features of the present invention will be described in detail below with reference to the listed embodiments and the accompanying drawings. It should be noted that the 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. For ease of description, the terms "upper" and "lower" used below are consistent with the upper and lower directions in the accompanying drawings, but this should not be construed as a limitation of the technical solution of the present invention.

[0035] Please see Figures 1 to 16This embodiment discloses an underground space connection structure, including a steel wall box structure for underground space connection, installed on a wall 7 at a location where an opening needs to be reserved. The steel wall box structure for underground space connection includes: two steel plates 1, a rectangular steel wall box with a self-locking system, and a tie rod mechanism 4. The rectangular steel wall box with a self-locking system includes a steel box wall 2 and multiple locking systems 3, which are arranged inside the steel box wall 2. The steel box wall 3 is a structure consisting of a front panel, a back panel, a top panel, a bottom panel, and two side panels. The steel box wall 2 is composed of two rectangular steel plates 1, which are respectively fixed to the perimeter of the front panel and the perimeter of the back panel of the steel box wall 2. Each steel plate 1 is rectangular and has an opening in the middle for accommodating the steel box wall 2. The front panel and back panel of the steel box wall 2 are flush with the two steel plates 1. Several vertically arranged slots 2.1 are provided on the front panel or back panel of the steel box wall 2. The number of slots 2.1 is the same as the number of locking systems 3. The top and bottom plates of the steel box wall 2 are respectively provided for the upper and lower ends of the locking systems 3. The protruding through-holes allow the locking system 3 to pass through the corresponding slots 2.1 and be fixedly connected to the tie rod mechanism 4 via hinge bolts. By pulling the tie rod mechanism 4, the upper and lower ends of all locking systems 3 protrude from the corresponding through-holes of the steel box wall 2. An Ω-shaped rubber water-stop cap 5 is installed on each of the upper and lower ends of the locking systems 3 protruding from the corresponding through-holes of the steel box wall 2. Before pouring the wall concrete, the tie rod mechanism 4 is removed from the locking system 3, and the slots 2.1 are sealed and fixed to the locking system 3 for connecting the tie rod mechanism using long wooden stakes. At the end of 4, the reinforcing bars of the remaining walls around the rectangular steel wall box with a self-locking system are tied. The steel plates on the upper side of the steel box wall 2 and the steel plates 1 on the lower side of the steel box wall are reinforced with additional steel. The steel plates 1 on both sides of the steel box wall are also reinforced with additional steel. Concrete is poured by formwork to make the steel wall box structure used for underground space connection form an integral wall with the surrounding remaining walls. The upper and lower sides of the rectangular steel wall box with a self-locking system form lintels 8 respectively, and the left and right sides of the rectangular steel wall box with a self-locking system form hidden columns 9 respectively.

[0036] The underground space connection structure provided by this invention allows for the following: When the steel wall box structure used for underground space connection is pre-embedded in the wall 7, the upper and lower ends of the locking system 3 extend out of the corresponding through holes in the steel box wall before the wall 7 is poured. This enables the upper and lower ends of the locking system 3 and the steel plate 1 to jointly resist the soil pressure on the wall, preventing the steel plate 1 from breaking at its connection with the steel box wall 2, thus ensuring the safety of the wall 7 and the foundation pit construction. When underground space needs to be connected, i.e., when an opening is needed in the wall 7, simply pulling the tie rod mechanism 4 allows the upper and lower ends of all the locking systems 3 to retract into the steel box wall. The steel plates 1 around the rectangular steel wall box with the built-in locking system can then be cut to remove the rectangular steel wall box with the built-in locking system, avoiding the need for later wall removal. This not only facilitates construction and reduces construction difficulty but also effectively protects the original wall structure. Furthermore, by setting steel plates 1 around the perimeter of the steel wall box with its own interlocking system, it not only becomes part of the lintel 8 and hidden column 9, increasing their strength, but also allows groundwater to flow in a U-shaped path from the unexcavated side of the wall 7 to the excavated side, solving the problem of straight seepage at the wall 7 in traditional methods, increasing the seepage path of groundwater, and effectively reducing the risk of leakage at the wall 7. In addition, since the rectangular steel wall box with its own interlocking system is recyclable, it reduces the amount of steel reinforcement used, saves costs, reduces environmental pollution, and achieves green construction. Moreover, since the steel wall box structure is pre-embedded in the wall 7, the upper and lower ends of the interlocking system 3 extend from the corresponding through holes of the steel box wall 2 before the wall 7 is poured. This allows the upper and lower ends of the interlocking system 3 and the steel plates 1 to jointly resist the soil pressure on the wall 7, preventing the steel plates 1 from breaking at their connection with the steel box wall 2, ensuring the safety of the wall 7 and the foundation pit construction.

[0037] Preferably, in the underground space connection structure described above, the locking system 3 includes two springs 3.1, two first steel pipe locks 3.2, one solid steel pipe 3.3, two hollow steel pipe hoists 3.4, two hoist handles 3.5, two first force transmission steel pipes 3.6, and a triangular steel plate 3.7. The first steel pipe lock 3.2 includes a hollow pipe 3.2.1, a solid pipe 3.2.2, and two steel pipe purlin supports 3.2. 3. One end of the hollow tube 3.2.1 is coaxially connected to one end of a solid tube 3.2.2. The two steel pipe purlin supports 3.2.3 and a hollow steel pipe hoist 3.4 are respectively sleeved on the other end of the hollow tube 3.2.1, and the two steel pipe purlin supports 3.2.3 are respectively located on the upper and lower sides of the hollow steel pipe hoist 3.4. The two steel pipe purlin supports 3.2.3 are fixedly connected to the hollow tube 3.2.1. One end of the hoist handle 3.5 is fixedly connected to the corresponding hollow steel pipe hoist 3.4. The triangular steel plate 3.7 is a triangular plate. The three corners of the triangular steel plate 3.7 are respectively hinged to the other ends of the two first force transmission steel pipes 3.6 and the pull rod mechanism 4 through hinge bolts. The two ends of the solid steel pipe 3.3 extend into the hollow tubes 3.2.1 of the two first steel pipe locks 3.2. The two springs 3.1 are respectively set on both sides of the solid steel pipe 3.3 and located in the hollow tubes 3.2.1 of the corresponding first steel pipe locks 3.2. The two ends of the springs 3.1 are respectively fixedly connected to the corresponding ends of the solid tubes 3.2.2 of the corresponding first steel pipe locks 3.2 and the corresponding ends of the solid steel pipe 3.3. The springs 3.1 are compression springs 3.1. In their natural state, the springs 3.1 push the solid tubes 3.2.2 away from the solid steel pipes 3.3.

[0038] Preferably, in the underground space connection structure described above, the triangular steel plate 3.7 is an isosceles triangle, and the distance from the connection point between the other end of the two first force transmission steel pipes 3.6 and the triangular steel plate 3.7 to the connection point between the tie rod mechanism 4 and the triangular steel plate 3.7 is equal, so that the tie rod mechanism 4 can synchronously and smoothly operate the two first steel pipe locks 3.2 to move.

[0039] Preferably, in the underground space connection structure described above, the tie rod mechanism 4 includes a steel pipe beam 4.1 and several second force transmission steel pipes 4.2. The second force transmission steel pipes 4.2 correspond one-to-one with the locking system 3. One end of the second force transmission steel pipe 4.2 is provided with a threaded section. The steel pipe beam 4.1 is provided with several internal threaded holes along its own axial direction that match the threaded sections of each of the second force transmission steel pipes 4.2. The three corners of the triangular steel plate 3.7 are respectively hinged to the other ends of the two first force transmission steel pipes 3.6 and the other ends of the second force transmission steel pipes 4.2 by hinge bolts.

[0040] Preferably, in the underground space connection structure described above, by horizontally pulling the steel pipe beam 4.1 away from the steel box wall 2, the angle between the two first force transmission steel pipes 3.6 decreases. The two first force transmission steel pipes 3.6 drive the corresponding first steel pipe latches 3.2 to move closer to each other along the axial direction of the solid steel pipe 3.3, causing the corresponding solid pipe 3.2.2 to retract into the steel box wall 2. This ensures that the upper and lower ends of all latch systems 3 retract into the steel box wall. 2. By horizontally pushing the steel pipe beam 4.1 towards the steel box wall 2, the angle between the two first force transmission steel pipes 3.6 increases. The two first force transmission steel pipes 3.6 drive the corresponding first steel pipe latches 3.2 to move away from each other along the axial direction of the solid steel pipe 3.3, so that the corresponding solid pipe 3.2.2 extends out of the steel box wall 2 from the corresponding through hole, thus making the upper and lower ends of the latch system 3 extend out of the steel box wall 2 from the corresponding through hole.

[0041] Preferably, in the underground space connection structure described above, the locking system 3 located on both sides further includes a second hoist handle 3.8 and a second steel pipe lock 3.9. One end of the second hoist handle 3.8 is fixedly connected to the hollow steel pipe hoist 3.4, and one end of the second steel pipe lock 3.9 is hinged to the other end of the second hoist handle 3.8. Holes 2.2 are respectively opened on the left and right side plates of the steel box wall 2 for the other end of the corresponding second steel pipe lock 3.9 to pass through. By pulling the pull rod mechanism 4, the second steel pipe lock 3.9 can extend out of the steel box wall 2 from the side of the steel box wall 2 corresponding to the hole 2.2 or retract into the steel box wall 2. By horizontally pulling the steel pipe beam 4.1 away from the steel box wall 2, the angle between the two first force transmission steel pipes 3.6 decreases. The two first force transmission steel pipes 3.6 drive the corresponding first steel pipe latches 3.2 to move closer to each other along the axial direction of the solid steel pipe 3.3, which causes the corresponding solid pipe 3.2.2 to retract into the steel box wall 2, and also causes the second steel pipe latches 3.9 to retract into the steel box wall 2, so that the steel box wall 2 can be removed from the wall 7 later. By horizontally pushing the steel pipe beam 4.1 towards the steel box wall 2, the angle between the two first force transmission steel pipes 3.6 increases. The two first force transmission steel pipes 3.6 drive the corresponding first steel pipe latches 3.2 to move away from each other along the axial direction of the solid steel pipe 3.3. This causes the corresponding solid pipe 3.2.2 to extend out of the steel box wall 2 from the corresponding through hole, and also causes the second steel pipe latch 3.9 to extend out of the steel box wall 2 from the corresponding hole 2.2 on the side of the steel box wall 2. In this way, the steel wall box structure used for underground space connection can be embedded in the wall 7, and can resist soil pressure during underground foundation pit excavation, avoiding the steel box wall 2 from breaking with the surrounding steel plate 1.

[0042] Preferably, in the underground space connection structure described above, to further prevent concrete / water from entering the steel box wall 2 through the slot 2.1 during subsequent pouring, a waterproof membrane can be covered on the side of the steel box wall 2 with the slot 2.1 after the long wooden beam is installed in the slot. When the steel box wall 2 needs to be removed from the wall 7, simply tear off the waterproof membrane first, and then remove the long wooden beam. To ensure that the end of the locking system 3 used to connect the tie rod mechanism 4 can extend out of the slot 2.1 when the long wooden beam is removed, the long wooden beam can be connected to the end of the locking system 3 used to connect the tie rod mechanism 4 with a steel wire.

[0043] Preferably, in the underground space connection structure described above, when the part of the wall 7 that needs to reserve an opening needs to connect the underground spaces on both sides, the long wooden rod at the slot 2.1 is removed, and the tie rod mechanism 4 is connected to the corresponding locking system 3 by hinge bolts. By pulling the tie rod mechanism 4 outward horizontally, the upper and lower ends of all locking systems 3 are retracted into the steel box wall 2. The steel plates 1 around the steel wall box with the built-in locking system are cut with a cutting tool, the steel wall box with the built-in locking system is removed, and the hole at the Ω-shaped rubber waterstop cap 5 is filled with concrete to form a connecting opening, thereby realizing the connection between the underground spaces on both sides.

[0044] Preferably, in the underground space connection structure described above, in order to improve the strength of the steel box wall 2, longitudinal and transverse reinforcing ribs 2.3 are provided inside the steel box wall 2.

[0045] This embodiment discloses a construction method for an underground space connectivity structure, including the following steps:

[0046] Step 1: Place the steel wall box structure on the wall 7 to be constructed at the location where the pre-reserved opening is needed. The steel wall box structure includes: two steel plates 1, a rectangular steel wall box with a self-locking system, and a tie rod mechanism 4. The rectangular steel wall box with a self-locking system includes a steel box wall 2 and multiple locking systems 3. The multiple locking systems 3 are arranged inside the steel box wall 2. The steel box wall 2 is a cuboid composed of a front panel, a back panel, a top panel, a bottom panel, and two side panels. The two steel plates 1 are... The steel box wall 2 is fixed to the four sides of the front panel and the four sides of the back panel. Each steel plate 1 is rectangular, and each steel plate 1 has an opening in the middle for accommodating the steel box wall 2. The front panel and the back panel of the steel box wall 2 are flush with the two steel plates 1 respectively. Several vertically arranged slots 2.1 are opened on the front panel or the back panel of the steel box wall 2. The number of slots 2.1 is the same as the number of the locking system 3. The top plate and the bottom plate of the steel box wall 2 are respectively provided with upper and lower openings for the locking system 3. The lower end protrudes through the through hole, allowing the locking system 3 to pass through the corresponding slot 2.1 and be fixedly connected to the pull rod mechanism 4 via hinge bolts. By pulling the pull rod mechanism 4, the upper and lower ends of all locking systems 3 protrude from the corresponding through holes in the steel box wall 2. An Ω-shaped rubber waterstop cap 5 is installed on the portion of each locking system 3 protruding from the steel box wall 2. The Ω-shaped rubber waterstop cap 5 serves two purposes: firstly, to stop water flow, and secondly, to prevent the upper and lower ends of the locking system 3 from contacting the subsequently poured concrete. Concrete does not come into contact with the steel box wall 2 to facilitate retraction. The tie rod mechanism 4 is removed from the locking system 3. The slot 2.1 is sealed and the end of the locking system 3 used to connect the tie rod mechanism 4 is fixedly connected to the end of the locking system 3 used to connect the tie rod mechanism 4. The long wooden beam is set to prevent concrete / water from entering the steel box wall 2 through the slot 2.1, and to fix the position of the triangular steel plate 3.7 to prevent the upper and lower ends of the locking system 3 from retracting into the steel box wall 2.

[0047] Step 2: Tie the reinforcing bars of the remaining walls 7 around the rectangular steel wall box with self-locking system. The reinforcing bars are densified between the steel plates 1 on the upper side and the steel plates 1 on the lower side of the steel box wall 2. The reinforcing bars are also densified between the steel plates 1 on both sides of the steel box wall 2. The formwork is erected and concrete is poured so that the steel wall box structure and the surrounding remaining walls 7 form an integral wall. The upper and lower sides of the rectangular steel wall box with self-locking system form lintels 8 respectively. The left and right sides of the rectangular steel wall box with self-locking system form hidden columns 9 respectively.

[0048] Step 3: Drill holes on one side of the lintel 8 to install reinforcing bars 14. Construct the basement 10 floor slab 11 first, and complete the construction of the basement 10.

[0049] Step 4: After the excavation, construct the soil body 6 of basement 12. Drill holes on the other side of the lintel 8 to install reinforcing bars 14. After construction, construct the floor slab 11 of basement 12. After completion, construct basement 12.

[0050] Step 5: Remove the long wooden beam from slot 2.1. When removing the long wooden beam, the end of the locking system 3 used to connect the tie rod mechanism 4, i.e., the triangular steel plate 3.7, can be brought out of slot 2.1. The tie rod mechanism 4 is connected to the corresponding locking system 3 by hinge bolts. By pulling the tie rod mechanism 4 outward horizontally, the upper and lower ends of all locking systems 3 are retracted into the steel box wall 2 and separated from the lintel 8.

[0051] Step 6: Use a cutting tool to cut the steel plates 1 around the steel wall box with the self-locking system, remove the steel wall box with the self-locking system, and fill the hole at the Ω-shaped rubber water-stop cap 5 with concrete to form a connecting opening, so as to connect the basement 10 built first and the basement 12 built later.

[0052] This invention provides a method for connecting underground spaces. A steel wall box structure is placed on a wall 7 to be constructed at the location where a pre-reserved opening is needed. The steel wall box structure includes two steel plates 1, a rectangular steel wall box with a self-locking system, and a tie rod mechanism 4. The rectangular steel wall box with the self-locking system includes a steel box wall 2 and multiple locking systems 3. The multiple locking systems 3 are arranged inside the steel box wall 2. By pulling the tie rod mechanism 4, the upper and lower ends of all locking systems 3 extend out of the corresponding through holes in the steel box wall 2. An Ω-shaped rubber water-stop cap 5 is installed on the upper and lower ends of all locking systems 3 extending out of the steel box wall 2. A long wooden strip is used to seal the slot 2.1 and fix the end of the locking system 3 used to connect to the tie rod mechanism 4. Step 2: Binding the rectangular steel wall box with the self-locking system. The remaining steel bars of the wall 7 around the steel wall box are removed; holes are drilled on one side of the lintel 8 to install reinforcing bars 14; the basement 10 floor slab 11 is built first, and the construction of the basement 10 is completed; the soil 6 of the basement 12 is built after excavation; holes are drilled on the other side of the lintel 8 to install reinforcing bars 14; the basement 12 floor slab 11 is built after construction, and the construction of the basement 12 is completed; the long wooden joists at the slot 2.1 are removed; the tie rod mechanism 4 is connected to the corresponding locking system 3 by hinge bolts; the tie rod mechanism 4 is pulled outward horizontally to make the upper and lower ends of all locking systems 3 retract into the steel box wall 2; the steel plates 1 around the steel wall box with the self-locking system are cut with a cutting tool; the steel wall box with the self-locking system is removed; and the holes at the Ω-shaped rubber waterstop caps 5 are filled with concrete to form a connecting opening, realizing the connection between the first basement 10 and the later basement 12. This invention allows the upper and lower ends of all locking systems 3 to retract into the steel box wall 2 simply by pulling the lever mechanism 4. The steel plates 1 around the perimeter of the rectangular steel wall box with its own locking system can then be cut to remove the box, avoiding the need for later demolition of the wall 7. This not only simplifies construction and reduces construction difficulty but also effectively protects the original wall structure. Furthermore, by setting steel plates around the perimeter of the steel wall box with its own locking system, it not only becomes part of the lintel 8 and concealed column 9, increasing their strength, but also increases the path for water flow from one side of the wall to the other, effectively reducing the risk of leakage in the wall 7. In addition, since the rectangular steel wall box with its own locking system is recyclable, it reduces the amount of steel reinforcement used, saves costs, reduces environmental pollution, and achieves green construction. Furthermore, since the steel wall box structure is pre-embedded in the wall 7, the upper and lower ends of the locking system 3 extend out of the corresponding through holes of the steel box wall 2 before the wall 7 is poured. This allows the upper and lower ends of the locking system 3 and the steel plate 1 to jointly resist the soil pressure on the wall 7, preventing the steel plate 1 from breaking at its connection with the steel box wall 2, and ensuring the safety of the wall 7 and the foundation pit construction.

[0053] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An underground space connectivity structure, characterized in that, This includes a steel wall box structure for connecting underground spaces, installed at locations in walls where openings need to be reserved. The steel wall box structure for connecting underground spaces comprises: two steel plates, a rectangular steel wall box with a self-locking system, and a tie rod mechanism. The rectangular steel wall box with the self-locking system includes a steel box wall and multiple locking systems arranged within the steel box wall. The steel box wall is a cuboid composed of a front panel, a back panel, a top panel, a bottom panel, and two side panels. Steel plates are fixed to the perimeter of the front panel and the perimeter of the back panel of the steel box wall. Each steel plate is rectangular and has an opening in the center to accommodate the steel box wall. The front and back panels of the steel box wall are flush with the two steel plates. Several vertically arranged slots are formed on the front or back panel of the steel box wall, the number of which is the same as the number of locking systems. Through holes are formed on the top and bottom plates of the steel box wall for the upper and lower ends of the locking systems to extend out. The system can pass through the corresponding slots and be fixedly connected to the tie rod mechanism by hinge bolts. By pulling the tie rod mechanism, the upper and lower ends of all locking systems protrude from the corresponding through holes in the steel box wall. An Ω-shaped rubber water-stop cap is installed on the part of each locking system that protrudes from the corresponding through hole in the steel box wall. Before pouring the wall concrete, the tie rod mechanism is removed from the locking system. Long wooden blocks are used to seal the slots and fix the ends of the locking system used to connect the tie rod mechanism. The self-locking system is then tied. The reinforcing bars of the remaining walls surrounding the rectangular steel wall box are reinforced with additional steel plates on the upper and lower sides of the steel box wall. Concrete is then poured using formwork to create a unified wall structure between the steel wall box and the surrounding remaining walls. Lintels are formed on the upper and lower sides of the rectangular steel wall box with its own locking system, and concealed columns are formed on the left and right sides of the rectangular steel wall box with its own locking system.

2. The underground space connectivity structure as described in claim 1, characterized in that, The locking system includes two springs, two first steel pipe locks, one solid steel pipe, two hollow steel pipe hoists, two hoist handles, two first force transmission steel pipes, and a triangular steel plate. Each first steel pipe lock includes a hollow pipe, a solid pipe, and two steel pipe purlin supports. One end of the hollow pipe is coaxially connected to one end of the solid pipe. The two steel pipe purlin supports and one hollow steel pipe hoist are respectively fitted onto the other end of the hollow pipe, with the two steel pipe purlin supports located on the upper and lower sides of the hollow steel pipe hoist. The two steel pipe purlin supports are fixedly connected to the hollow pipe. One end of each hoist handle is fixedly connected to the corresponding hollow pipe. On the steel pipe hoist, the triangular steel plate is a triangular plate. The three corners of the triangular steel plate are respectively hinged to the other ends of the two first force transmission steel pipes and the pull rod mechanism through hinge bolts. The two ends of the solid steel pipe extend into the hollow tubes of the two first steel pipe locks. The two springs are respectively set on both sides of the solid steel pipe and located in the hollow tubes of the corresponding first steel pipe locks. The two ends of the springs are respectively fixedly connected to the solid tubes of the corresponding first steel pipe locks and the corresponding ends of the solid steel pipes. The springs are compression springs. In their natural state, the springs push the solid tubes away from the solid steel pipes.

3. The underground space connectivity structure as described in claim 2, characterized in that, The tie rod mechanism includes a steel pipe beam and several second force transmission steel pipes. Each second force transmission steel pipe corresponds to a locking system. One end of each second force transmission steel pipe is provided with a threaded section. The steel pipe beam is provided with several internal threaded holes along its own axial direction that match the threaded sections of each second force transmission steel pipe. The three corners of the triangular steel plate are respectively hinged to the other ends of the two first force transmission steel pipes and the other ends of the second force transmission steel pipes by hinge bolts.

4. The underground space connectivity structure as described in claim 3, characterized in that, By horizontally pulling the steel pipe beam away from the steel box wall, the angle between the two first force-transmitting steel pipes decreases, and the two first force-transmitting steel pipes drive the corresponding first steel pipe latches to move closer to each other along the axial direction of the solid steel pipe, causing the corresponding solid pipe to retract into the steel box wall; by horizontally pushing the steel pipe beam towards the steel box wall, the angle between the two first force-transmitting steel pipes increases, and the two first force-transmitting steel pipes drive the corresponding first steel pipe latches to move away from each other along the axial direction of the solid steel pipe, causing the corresponding solid pipe to extend out of the steel box wall from the corresponding through hole.

5. The underground space connectivity structure as described in claim 4, characterized in that, The locking system located on both sides also includes a second hoist handle and a second steel pipe lock. One end of the second hoist handle is fixedly connected to the hollow steel pipe hoist, and one end of the second steel pipe lock is hinged to the other end of the second hoist handle. Holes are respectively opened on the left and right side plates of the steel box wall for the other end of the corresponding second steel pipe lock to pass through. By pulling the pull rod mechanism, the second steel pipe lock can extend out of the steel box wall from the corresponding hole on the side of the steel box wall or retract into the steel box wall.

6. The underground space connectivity structure as described in claim 5, characterized in that, A guide cylinder is also provided inside the steel box wall. The guide cylinder is set at an angle, and the number of guide cylinders is the same as the number of second steel pipe locks. The upper end of the guide cylinder is fixedly set at the corresponding hole of the side plate of the steel box wall.

7. The underground space connectivity structure as described in claim 1, characterized in that, The long wooden beam is fixedly connected to the end of the locking system used to connect the pull rod mechanism by a steel wire. When the long wooden beam is removed from the slot, the end of the locking system used to connect the pull rod mechanism can be pulled out of the slot.

8. The underground space connectivity structure as described in claim 1, characterized in that, When the area in the wall that requires a pre-reserved opening needs to connect the underground spaces on both sides, remove the long wooden beam from the slot, connect the tie rod mechanism to the corresponding locking system with hinge bolts, and pull the tie rod mechanism outward horizontally to retract the upper and lower ends of all locking systems into the steel box wall; cut the steel plates around the steel wall box with the built-in locking system with a cutting tool, remove the steel wall box with the built-in locking system, and fill the hole at the Ω-shaped rubber waterstop cap with concrete to form a connecting opening, thereby connecting the underground spaces on both sides.

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