Underground space communication method

Abstract

The invention provides an underground space communication method, 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] The present invention belongs to the technical field of urban underground space connection, and the present invention relates to an underground space connection method. Background Art

[0002] With the gradual rise of underground space structures, in the construction of urban underground space, due to the limitations of construction conditions and considering long-term planning and development, it is necessary to reserve multiple interconnection interfaces in the underground space theme structure to facilitate the connection of the underground space in the later stage.

[0003] Traditionally, underground spaces, such as underground garages and shopping malls, have served as appendages to above-ground structures, characterized by being separate and independent units. However, as urban underground spaces increasingly become integrated and connected, traditional underground spaces lack pre-existing openings in their walls.

[0004] The method for later chiseling of traditional walls without reserved openings is roughly as follows: first chisel away the concrete at the lintel position to strengthen the lintel and set up a waterproof structure. After the lintel reaches the design strength, chisel away the concrete at the hidden columns on both sides to strengthen the hidden columns and set up a waterproof structure. After the hidden columns reach the design strength, chisel away the remaining part of the wall to form a connecting doorway.

[0005] The disadvantage of this approach is that by breaking down the structural reinforced concrete and re-setting reinforcement measures and waterproofing structures, the thickness of the existing structural reinforced concrete walls increases the difficulty of cutting and breaking, and at the same time seriously damages the reinforced concrete wall structure, affecting the quality and service life of the reinforced concrete underground passage.

[0006] Therefore, how to research an economical and reasonable reserved interface that does not require destroying the original wall and force system while reducing the difficulty of construction is a technical problem that technical personnel in the vicinity of this project urgently need to solve. Summary of the Invention

[0007] The present invention aims to provide an underground space connection method which does not require destroying the original wall and force system and can reduce the difficulty of construction.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] A method for connecting an underground space comprises the following steps:

[0010] Step 1, place the steel wall box structure on the part of the wall to be constructed where an opening needs to be reserved, the steel wall box structure includes: two steel plates, a rectangular steel wall box with a self-locking system and a pull rod mechanism, the rectangular steel wall box with a self-locking system includes a steel box wall and multiple locking systems, the multiple locking systems are arranged in the steel box wall, the steel box wall is a rectangular parallelepiped consisting of a front panel, a back panel, a top panel, a bottom panel and two side panels, the two steel plates are respectively fixed on the four sides of the front panel and the four sides of the back panel of the steel box wall, each steel plate is rectangular, and the middle part of each steel plate has an opening for accommodating the steel box wall, the front panel and the back panel of the steel box wall are respectively fixed to the The two steel plates are flush, and a plurality of vertically arranged card slots are provided on the front panel or the back panel of the steel box wall. The number of the card slots is the same as the number of the locking systems. The top plate and the bottom plate of the steel box wall are respectively provided with through holes for the upper and lower ends of the locking system to extend out. The locking system can pass through the corresponding card slots and be fixedly connected to the pull rod mechanism by hinged bolts. By pulling the pull rod mechanism, the upper and lower ends of all the locking systems are extended out of the steel box wall from the corresponding through holes of the steel box wall, and an Ω-shaped rubber water-stop cap is respectively installed on the parts of the upper and lower ends of all the locking systems extending out of the steel box wall. The pull rod mechanism is removed from the locking system, and the card slot is sealed with a long wooden slat and the end of the locking system for connecting the pull rod mechanism is fixed;

[0011] Step 2: Tie the steel bars of the remaining walls around the rectangular steel wall box with its own locking system, support the formwork and pour concrete so that the steel wall box structure and the surrounding remaining walls form an integral wall;

[0012] Step 3: Drill holes on one side of the lintel to set up dowel bars, build the basement floor first, and complete the basement construction;

[0013] Step 4: After the excavation, build the basement soil, drill holes on the other side of the lintel to set the dowels, build the basement floor after construction, and then build the basement after completion;

[0014] Step 5: Remove the long wooden slats at the slots, connect the pull rod mechanism to the corresponding locking system through hinged bolts, and retract the upper and lower ends of all locking systems into the steel box wall by pulling the pull rod mechanism horizontally outward;

[0015] Step 6: Use a cutting tool to cut the steel plates 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 with concrete to form a connecting hole, thereby realizing the connection between the first basement and the later basement.

[0016] Preferably, in the underground space connection method as described above, in step 2, when tying the steel bars of the remaining walls around the rectangular steel wall box with a self-locking system, the steel bars are densely packed between the steel plates on the upper side of the steel box wall and between the steel plates on the lower side of the steel box wall, and the steel bars are densely packed between the steel plates on both sides of the steel box wall. After the formwork is supported and the concrete is poured, lintels are formed on the upper and lower sides of the rectangular steel wall box with a self-locking system, and hidden columns are formed on the left and right sides of the rectangular steel wall box with a self-locking system.

[0017] Preferably, in the underground space connection method as described above, the locking system includes two springs, two first steel pipe locking buckles, a solid steel pipe, two hollow steel pipe hoists, two hoist handles, two first force transmission steel pipes and a triangular steel plate, the first steel pipe locking buckle 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 a solid pipe, the two steel pipe purlin supports and a hollow steel pipe hoist are respectively sleeved on the other end of the hollow pipe, and the two steel pipe purlin supports are respectively 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, and one end of the hoist handle The end is fixedly connected to the corresponding hollow steel pipe hoist, and the triangular steel plate is a triangular plate. The three corners of the triangular steel plate are respectively hinged to the other end of the two first force transmission steel pipes and the pull rod mechanism through hinge bolts. The two ends of the solid steel pipe are respectively extended into the hollow tubes of the two first steel pipe locks. The two springs are respectively arranged on both sides of the solid steel pipe and are located in the hollow tubes of the corresponding first steel pipe locks. The two ends of the spring are respectively fixedly connected to the solid tube of the corresponding first steel pipe lock and the corresponding end of the solid steel pipe. The spring is a compression spring, and the spring pushes the solid tube away from the solid steel pipe in a natural state.

[0018] Preferably, in the underground space connection method as described above, the pull rod mechanism includes a steel pipe crossbeam and several second force transmission steel pipes, the second force transmission steel pipes correspond one-to-one to the locking system, one end of the second force transmission steel pipe is provided with a threaded section, and the steel pipe crossbeam is provided with several internal threaded holes along its own axial direction that match the threaded sections of the second force transmission steel pipes, and the three corners of the triangular steel plate are respectively hinged to the other end of the two first force transmission steel pipes and the other end of the second force transmission steel pipe through hinge bolts.

[0019] Preferably, in the underground space connection method as described above, by pulling the steel pipe crossbeam horizontally in a direction away from the steel box wall, the angle of the two first force-transmitting steel pipes becomes smaller, and the two first force-transmitting steel pipes drive the corresponding first steel pipe locks to approach each other along the axial direction of the solid steel pipe, so that the corresponding solid pipes are retracted into the steel box wall, that is, the upper and lower ends of all locking systems are retracted into the steel box wall; by pushing the steel pipe crossbeam horizontally in a direction close to the steel box wall, the angle of the two first force-transmitting steel pipes becomes larger, and the two first force-transmitting steel pipes drive the corresponding first steel pipe locks to move away from each other along the axial direction of the solid steel pipe, so that the corresponding solid pipes extend out of the steel box wall from the corresponding through holes of the steel box wall, that is, the upper and lower ends of the locking systems extend out of the steel box wall from the corresponding through holes of the steel box wall.

[0020] Preferably, in the underground space connection method as described above, 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 for the other end of the corresponding second steel pipe lock to pass through are respectively opened on the left and right side panels of the steel box wall. By pulling the pull rod mechanism, the second steel pipe lock can be extended from the corresponding hole on the side of the steel box wall to the steel box wall or retracted into the steel box wall.

[0021] It can be seen from the technical solutions disclosed above that, compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention provides a method for connecting underground spaces, which places a steel wall box structure at a position on a wall to be constructed where an opening needs to be reserved. The steel wall box structure includes: two steel plates, a rectangular steel wall box with a built-in locking system, and a pull rod mechanism. The rectangular steel wall box with a built-in locking system includes a steel box wall and multiple locking systems. The multiple locking systems are arranged in the steel box wall. By pulling the pull rod mechanism, the upper and lower ends of all locking systems extend out of the steel box wall from the corresponding through holes in the steel box wall, and an Ω-shaped rubber water-stop cap is installed on the parts of the upper and lower ends of all locking systems extending out of the steel box wall. The pull rod mechanism is removed from the locking system, and the slot is sealed and fixed with a long wooden slat. The end of the locking system for connecting the pull rod mechanism is fixed. , step 2, tie the steel bars of the remaining walls around the rectangular steel wall box with a self-locking system; drill holes on one side of the lintel to set dowel bars, build the basement floor first, and complete the construction of the first basement; excavate the soil for the second basement in the later stage, drill holes on the other side of the lintel to set dowel bars, build the basement floor after construction, and complete the construction of the second basement; remove the long wooden slats at the slot, connect the pull rod mechanism with the corresponding locking system through hinged bolts, and retract the upper and lower ends of all locking systems into the steel box wall by pulling the pull rod mechanism outward horizontally; use a cutting tool to cut the steel plates around the steel wall box with the self-locking system, remove the steel wall box with the self-locking system, and fill the holes at the Ω-type rubber water stop cap with concrete to form a connecting hole, thereby realizing the connection between the first basement and the later basement. The present invention can retract the upper and lower ends of all locking systems into the steel box wall by simply pulling the pull rod mechanism, and cutting the steel plates around the rectangular steel wall box with the self-locking system to remove the rectangular steel wall box with the self-locking system, thereby avoiding the need to chisel out the wall later. This not only facilitates construction and reduces construction difficulty, but also effectively protects the original wall structure. In addition, by arranging steel plates around the steel wall box with the self-locking system, not only can they become part of the lintel and hidden column, thereby improving the strength of the lintel and hidden column, but also a U-shaped path can be formed in the process of groundwater flowing from the unexcavated wall side to the excavated wall side, thereby solving the linear seepage that occurs at the connecting hole in the traditional method, increasing the seepage path of groundwater, and effectively reducing the risk of wall leakage. In addition, since the rectangular steel wall box with the self-locking system can be recycled, the use of steel bars is reduced, the cost is saved, the pollution to the environment is reduced, and green construction is achieved. In addition, since the steel wall box structure is embedded in the wall, the upper and lower ends of the locking system extend from the corresponding through holes of the steel box wall and the wall is cast after the steel box wall is cast. The upper and lower ends of the locking system can work together with the steel plate to resist the soil pressure on the wall, avoiding the steel plate from breaking at the connection between it and the steel box wall, thereby ensuring the safety of the wall and foundation pit construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the three-dimensional structure of the steel wall box structure used for connecting underground spaces according to the present invention.

[0024] Figure 2 It is a schematic diagram of the assembly between the steel box wall and the steel plate in the present invention.

[0025] Figure 3 It is a side view of the steel box wall in the present invention.

[0026] Figure 4 Schematic diagram of the distribution of reinforcing ribs in the present invention.

[0027] Figure 5 It is a schematic diagram of the assembly between the locking system and the pull rod mechanism in the present invention.

[0028] Figure 6 It is a schematic diagram of the assembly between the locking system and the pull rod mechanism located on both sides of the present invention.

[0029] Figure 7 It is a structural schematic diagram of the first steel pipe lock buckle in the present invention.

[0030] Figure 8 It is a structural schematic diagram of the solid steel pipe in the present invention.

[0031] Figure 9 It is a structural schematic diagram of the pull rod mechanism in the present invention.

[0032] Figure 10 This is a structural diagram of the locking system with its upper and lower ends retracted into the steel box wall.

[0033] Figure 11 This is a structural diagram of the locking system with the upper and lower ends extending out of the steel box wall.

[0034] Figure 12 It is a structural schematic diagram of the steel wall box structure used for connecting the underground space in step 3 of the present invention.

[0035] Figure 13 yes Figure 12 AA cross-sectional view.

[0036] Figure 14 It is a structural schematic diagram of the steel wall box structure used for connecting the underground space in step 4 of the present invention.

[0037] Figure 15 It is a structural schematic diagram of the steel wall box structure used for connecting the underground space in step 5 of the present invention.

[0038] Figure 16 It is a structural schematic diagram of the steel wall box structure used for connecting the underground space in step 6 of the present invention.

[0039] In the figure: 1-steel plate, 2-steel box wall, 2.1-slot, 2.2-hole, 2.3-reinforcement 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, 3.3-solid steel pipe, 3.4-hollow steel pipe hoist, 3.5-hoist handle, 3.6-first force-transmitting steel pipe, 3.7-triangular steel plate, 3.8-second hoist handle, 3.9-second steel pipe lock, 4-pull rod mechanism, 4.1-steel pipe crossbeam, 4.2-second force-transmitting steel pipe, 5-Ω-type rubber water-stop cap, 6-soil, 7-wall, 8-lintel, 9-hidden column, 10-basement built first, 11-floor slab, 12-basement built later. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following examples, combined with the accompanying drawings, will provide a detailed description of the technical content and features of the present invention. It should be noted that the drawings are all in a very simplified form and are not precisely proportioned, and are only used to conveniently and clearly assist in illustrating the purpose of the embodiments of the present invention. For ease of description, the "upper" and "lower" described below are consistent with the upper and lower directions in the accompanying drawings, but this does not constitute a limitation of the technical solution of the present invention.

[0041] See also Figures 1 to 16 This embodiment discloses a method for connecting underground spaces, comprising the following steps:

[0042] Step 1: Place the steel wall box structure on the part of the wall to be constructed 7 where a hole needs to be reserved. The steel wall box structure includes: two steel plates 1, a rectangular steel wall box with a self-locking system, and a pull 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 in the steel box wall 2. The steel box wall 2 is a rectangular parallelepiped consisting of a front panel, a back panel, a top panel, a bottom panel and two side panels. The two steel plates 1 are divided into They are fixed on the four sides of the front panel and the four sides of the back panel of the steel box wall 2. Each steel plate 1 is rectangular. The middle part of each steel plate 1 has an opening 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. A plurality of vertically arranged card slots 2.1 are opened on the front panel or the back panel of the steel box wall 2. The number of the card slots 2.1 is the same as the number of the locking system 3. The top and bottom plates of the steel box wall 2 are respectively opened for the upper and lower parts of the locking system 3. The through hole extending from the lower end, the locking system 3 can pass through the corresponding card slot 2.1 and is fixedly connected to the pull rod mechanism 4 through a hinged bolt. By pulling the pull rod mechanism 4, the upper and lower ends of all the locking systems 3 are extended from the corresponding through holes of the steel box wall 2 to the steel box wall 2, and an Ω-shaped rubber water-stopping cap 5 is installed on the upper and lower ends of all the locking systems 3 extending from the steel box wall 2. The Ω-shaped rubber water-stopping cap 5 is provided to stop water on the one hand and to ensure that the upper and lower ends of the locking system 3 are connected to the concrete poured later on the other hand. To prevent the concrete from contacting the steel box wall 2, and to facilitate smooth retraction, the tie rod mechanism 4 is removed from the locking system 3. The slot 2.1 is sealed with a long wooden slat and the end of the locking system 3 connected to the tie rod mechanism 4 is fixed. The long wooden slat is fixedly connected to the end of the locking system 3 connected to the tie rod mechanism 4. The long wooden slat is provided to prevent concrete / water from entering the steel box wall 2 through the slot 2.1. On the other hand, it serves 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.

[0043] Step 2, tie the steel bars of the remaining wall 7 around the rectangular steel wall box with a self-locking system, perform steel reinforcement density treatment between the steel plates 1 on the upper side of the steel box wall 2 and between the steel plates 1 on the lower side of the steel box wall 2, respectively, perform steel reinforcement density treatment between the steel plates 1 on both sides of the steel box wall 2, support the formwork and cast concrete, so that the steel wall box structure and the surrounding remaining walls 7 form an integral wall, and form lintels 8 on the upper and lower sides of the rectangular steel wall box with a self-locking system, respectively, and form hidden columns 9 on the left and right sides of the rectangular steel wall box with a self-locking system;

[0044] Step 3: Drill holes on one side of the lintel 8 to set the dowel bars 14, and then build the basement 10 floor slab 11 to complete the construction of the basement 10.

[0045] Step 4, after the later excavation, the soil 6 of the basement 12 is built, and the dowel bars 14 are drilled on the other side of the lintel 8. After the construction, the floor 11 of the basement 12 is built, and the construction of the basement 12 is completed;

[0046] Step 5: Remove the long wooden slats from the slots 2.1. When removing the long wooden slats, the ends of the locking systems 3 for connecting the pull rod mechanisms 4, i.e., the triangular steel plates 3.7, can be brought out of the slots 2.1. The pull rod mechanisms 4 are connected to the corresponding locking systems 3 via hinged bolts. The pull rod mechanisms 4 are pulled outward horizontally so that the upper and lower ends of all locking systems 3 are retracted into the steel box wall 2 and separated from the lintel 8.

[0047] Step 6: Use a cutting tool to cut the steel plates 1 around the steel wall box with a self-locking system, remove the steel wall box with a self-locking system, and fill the holes at the Ω-shaped rubber water stop cap 5 with concrete to form a connecting hole, thereby realizing the connection between the first built basement 10 and the later built basement 12.

[0048] The present invention provides a method for connecting underground spaces, which places a steel wall box structure at a position where an opening needs to be reserved on a wall 7 to be constructed, and the steel wall box structure includes: two steel plates 1, a rectangular steel wall box with a self-locking system, and a pull 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 in the steel box wall 2, and the upper and lower ends of all locking systems 3 are extended out of the steel box wall 2 from the corresponding through holes of the steel box wall 2 by pulling the pull rod mechanism 4, and an Ω-shaped rubber water-stop cap 5 is respectively installed on the upper and lower ends of all locking systems 3 that extend out of the steel box wall 2, and the slot 2.1 is sealed and fixed with a long wooden slat. The end of the locking system 3 for connecting to the pull rod mechanism 4 is tied. The steel bars of the remaining wall 7 around the steel wall box; holes are drilled on one side of the lintel 8 to set dowel bars 14, and the basement 10 floor 11 is built first to complete the construction of the first basement 10; the soil 6 of the later basement 12 is excavated in the later stage, and holes are drilled on the other side of the lintel 8 to set dowel bars 14, and the basement 12 floor 11 is built later to complete the construction of the later basement 12; the long wooden slats at the slot 2.1 are taken out, and the pull rod mechanism 4 is connected to the corresponding locking system 3 through hinged bolts, and the upper and lower ends of all locking systems 3 are retracted into the steel box wall 2 by pulling the pull rod mechanism 4 horizontally outward; 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 taken out, and the holes at the Ω-type rubber water stop cap 5 are filled with concrete to form a connecting hole, thereby realizing the connection between the first basement 10 and the later basement 12. The present invention only requires pulling the pull rod mechanism 4 to retract the upper and lower ends of all locking systems 3 into the steel box wall 2. Cutting the steel plates 1 around the rectangular steel wall box with the self-locking system allows the rectangular steel wall box with the self-locking system to be removed, avoiding the need to chisel out the wall 7 later. This not only facilitates construction and reduces construction difficulty, but also effectively protects the original wall structure. Furthermore, by placing the steel plates 1 around the steel wall box with the self-locking system, they not only become part of the lintel 8 and concealed columns 9, improving their strength, but also form a U-shaped path for groundwater to flow from the unexcavated side of the wall 7 to the excavated side. This solves the linear seepage problem that occurs at the wall 7 in traditional methods, increases the groundwater seepage path, and effectively reduces the risk of leakage from the wall 7. Furthermore, because the rectangular steel wall box with the self-locking system can be recycled, the use of steel bars is reduced, construction costs are saved, and environmental pollution is reduced, achieving green construction. In addition, since the steel wall box structure is pre-buried in the wall 7, the upper and lower ends of the locking system 3 extend from the corresponding through holes of the steel box wall 2 and the wall 7 is cast after the steel box wall 2 is cast. The upper and lower ends of the locking system 3 can jointly resist the soil pressure on the wall 7 with the steel plate 1, avoiding the steel plate 1 from breaking at the connection between it and the steel box wall 2, thereby ensuring the safety of the wall 7 and the foundation pit construction.

[0049] Preferably, in the underground space connection method described above, the locking system 3 includes two springs 3.1, two first steel pipe locking buckles 3.2, a 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, wherein the first steel pipe locking buckle 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 tube purlin supports 3.2.3 and a hollow steel tube hoist 3.4 are respectively sleeved on the other end of the hollow tube 3.2.1, and the two steel tube purlin supports 3.2.3 are respectively located on the upper and lower sides of the hollow steel tube hoist 3.4, the two steel tube purlin supports 3.2.3 are fixedly connected to the hollow tube 3.2.1, the hoist One end of the reed handle 3.5 is fixedly connected to the corresponding hollow steel pipe hoist 3.4, and 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 are respectively extended into the hollow pipes 3.2.1 of the two first steel pipe locks 3.2. The two springs 3.1 are respectively arranged on both sides of the solid steel pipe 3.3 and are located in the hollow pipes 3.2.1 of the corresponding first steel pipe locks 3.2. The two ends of the spring 3.1 are respectively fixedly connected to the solid pipe 3.2.2 of the corresponding first steel pipe lock 3.2 and the corresponding ends of the solid steel pipe 3.3. The spring 3.1 is a compression spring 3.1, and the spring 3.1 pushes the solid pipe 3.2.2 away from the solid steel pipe 3.3 in a natural state.

[0050] Preferably, in the underground space connection method as described above, the triangular steel plate 3.7 is an isosceles triangle, and the distance from the connection between the other end of the two first force transmission steel pipes 3.6 and the triangular steel plate 3.7 to the connection between the pull rod mechanism 4 and the triangular steel plate 3.7 is equal, so that the pull rod mechanism 4 can synchronously and smoothly operate the movement of the two first steel pipe locks 3.2.

[0051] Preferably, in the underground space connection method as described above, the pull rod mechanism 4 includes a steel pipe crossbeam 4.1 and several second force transmission steel pipes 4.2, the second force transmission steel pipes 4.2 correspond one-to-one to the locking system 3, and one end of the second force transmission steel pipe 4.2 is provided with a threaded section, and the steel pipe crossbeam 4.1 is provided with several internal threaded holes along its own axial direction that match the threaded sections of the second force transmission steel pipe 4.2, and the three corners of the triangular steel plate 3.7 are respectively hinged to the other end of the two first force transmission steel pipes 3.6 and the other end of the second force transmission steel pipe 4.2 by hinge bolts.

[0052] Preferably, in the underground space connection method as described above, by pulling the steel pipe crossbeam 4.1 horizontally in the direction away from the steel box wall 2, the angle of the two first force-transmitting steel pipes 3.6 becomes smaller, and the two first force-transmitting steel pipes 3.6 drive the corresponding first steel pipe lock buckles 3.2 to approach each other along the axial direction of the solid steel pipe 3.3, so that the corresponding solid pipes 3.2.2 are retracted into the steel box wall 2, that is, the upper and lower ends of all the lock buckle systems 3 are retracted into the steel box wall 2, so that the steel box wall 2 can be taken out from the wall 7 later; ... The steel pipe crossbeam 4.1 is pushed horizontally in the direction of the box wall 2, so that the angle of the two first force-transmitting steel pipes 3.6 becomes larger, and the two first force-transmitting steel pipes 3.6 drive the corresponding first steel pipe locks 3.2 to move away from each other along the axial direction of the solid steel pipe 3.3, so that the corresponding solid pipes 3.2.2 extend out of the steel box wall 2 from the corresponding through holes of the steel box wall 2, that is, the upper and lower ends of the locking system 3 extend out of the steel box wall 2 from the corresponding through holes of the steel box wall 2, so that the upper and lower ends of the locking system 3 and the steel plate 1 can jointly resist the soil pressure on the wall 7 to prevent the steel plate 1 from breaking.

[0053] Preferably, in the underground space connection method as described above, the locking system 3 located on both sides also 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 for the other end of the corresponding second steel pipe lock 3.9 to pass through are respectively provided on the left and right side panels of the steel box wall 2. By pulling the pull rod mechanism 4, the second steel pipe lock 3.9 can be extended from the corresponding hole 2.2 on the side of the steel box wall 2 to the steel box wall 2 or retracted into the steel box wall 2. By pulling the steel pipe crossbeam 4.1 horizontally away from the steel box wall 2, the angle of the two first force-transmitting steel pipes 3.6 becomes smaller, and the two first force-transmitting steel pipes 3.6 drive the corresponding first steel pipe lock buckles 3.2 to approach each other along the axial direction of the solid steel pipe 3.3, so that the corresponding solid pipes 3.2.2 are retracted into the steel box wall 2, and the second steel pipe lock buckles 3.9 are retracted into the steel box wall 2, so that the steel box wall 2 can be subsequently removed from the wall 7. By pushing the steel pipe crossbeam 4.1 horizontally toward the steel box wall 2, the angle of the two first force-transmitting steel pipes 3.6 becomes larger, and the two first force-transmitting steel pipes 3.6 drive the corresponding first steel pipe lock buckles 3.2 to move away from each other along the axial direction of the solid steel pipe 3.3, so that the corresponding solid pipes 3.2.2 extend out of the steel box wall 2 from the corresponding through holes in the steel box wall 2, and the second steel pipe lock buckles 3.9 extend out of the steel box wall 2 from the corresponding holes 2.2 on the side of the steel box wall 2. In this way, when the steel wall box structure is pre-buried in the wall 7, the upper and lower ends of the locking system 3 and the two second steel pipe lock buckles 3.9 can work together with the steel plate 1 to resist the soil pressure on the wall 7, thereby preventing the steel plate 1 from breaking.

[0054] Preferably, in the underground space connection method as described above, in the step 1, in order to further prevent concrete / water from entering the steel box wall 2 through the slot 2.1 during subsequent pouring, after the long wooden slats are provided in the slots, a waterproof membrane is covered on the side of the steel box wall 2 where the slots 2.1 are provided. (Not shown). When the steel box wall 2 needs to be removed from the wall 7, just tear off the waterproof membrane first and then remove the long wooden slats. In order to ensure that the end of the locking system 3 for connecting the pull rod mechanism 4 can be extended from the slot 2.1 when the long wooden slats are removed later, the long wooden slats can be connected to the end of the locking system 3 for connecting the pull rod mechanism 4 by a steel wire.

[0055] Preferably, in the underground space communication method as described above, in order to improve the strength of the steel box wall 2 , longitudinally and transversely arranged reinforcing ribs 2 . 3 are provided inside the steel box wall 2 .

[0056] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A method for connecting underground spaces, characterized in that: The steps include: Step 1: Place a steel wall box structure on the part of the wall to be constructed where an opening needs to be reserved. The steel wall box structure includes: two steel plates, a rectangular steel wall box with a self-locking system, and a pull rod mechanism. The rectangular steel wall box with a self-locking system includes a steel box wall and multiple locking systems. Multiple locking systems are arranged in the steel box wall. The steel box wall is a rectangular parallelepiped consisting of a front panel, a back panel, a top panel, a bottom panel, and two side panels. The two steel plates are respectively fixed on the four sides of the front panel and the four sides of the back panel of the steel box wall. Each steel plate is rectangular, and the middle of each steel plate has an opening for accommodating the steel box wall. The steel box wall A plurality of vertically arranged card slots are provided on the front panel or the back panel, and the number of the card slots is the same as the number of the locking systems. The top plate and the bottom plate of the steel box wall are respectively provided with through holes for the upper and lower ends of the locking system to extend out. The locking system can pass through the corresponding card slots and be fixedly connected to the pull rod mechanism by hinged bolts. By pulling the pull rod mechanism, the upper and lower ends of all the locking systems are extended out of the steel box wall from the corresponding through holes of the steel box wall, and an Ω-shaped rubber water stop cap is respectively installed on the parts of the upper and lower ends of all the locking systems extending out of the steel box wall. The pull rod mechanism is removed from the locking system, and the card slot is sealed with a long wooden slat and the end of the locking system for connecting the pull rod mechanism is fixed; Step 2: Tie the steel bars of the remaining walls around the rectangular steel wall box with its own locking system, support the formwork and pour concrete so that the steel wall box structure and the surrounding remaining walls form an integral wall; Step 3: Drill holes on one side of the lintel to set up dowel bars, build the basement floor first, and complete the basement construction; Step 4: After the excavation, build the basement soil, drill holes on the other side of the lintel to set the dowels, build the basement floor after construction, and then build the basement after completion; Step 5: Remove the long wooden slats at the slots, connect the pull rod mechanism to the corresponding locking system through hinged bolts, and retract the upper and lower ends of all locking systems into the steel box wall by pulling the pull rod mechanism horizontally outward; Step 6: Use a cutting tool to cut the steel plates 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 with concrete to form a connecting hole, thereby realizing the connection between the first basement and the later basement.

2. The underground space connection method according to claim 1, characterized in that: In step 2, when tying the steel bars of the remaining walls around the rectangular steel wall box with a self-locking system, the steel plates on the upper side of the steel box wall and the steel plates on the lower side of the steel box wall are respectively reinforced, and the steel plates on both sides of the steel box wall are respectively reinforced. After supporting the formwork and pouring concrete, lintels are formed on the upper and lower sides of the rectangular steel wall box with a self-locking system, and hidden columns are formed on the left and right sides of the rectangular steel wall box with a self-locking system.

3. The underground space connection method according to claim 1, characterized in that: The locking system includes two springs, two first steel pipe locks, a solid steel pipe, two hollow steel pipe hoists, two hoist handles, two first force transmission steel pipes and a triangular steel plate. The 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 a solid pipe. The two steel pipe purlin supports and a hollow steel pipe hoist are respectively sleeved on the other end of the hollow pipe, and the two steel pipe purlin supports are respectively 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, and one end of the hoist handle is fixedly connected to the corresponding hollow pipe. On the core steel pipe hoist, the triangular steel plate is a triangular plate, and the three corners of the triangular steel plate are hinged to the other end of the two first force transmission steel pipes and the pull rod mechanism through hinged bolts. The two ends of the solid steel pipe are respectively extended into the hollow tubes of the two first steel pipe locks. The two springs are respectively arranged on both sides of the solid steel pipe and are located in the hollow tubes of the corresponding first steel pipe locks. The two ends of the spring are respectively fixedly connected to the solid tube of the corresponding first steel pipe lock and the corresponding end of the solid steel pipe. The spring is a compression spring, and the spring pushes the solid tube away from the solid steel pipe in a natural state.

4. The underground space connection method according to claim 2, wherein: The pull rod mechanism includes a steel pipe crossbeam and several second force-transmitting steel pipes, the second force-transmitting steel pipes corresponding one-to-one to the locking system, a threaded section is provided at one end of the second force-transmitting steel pipe, and several internal threaded holes matching the threaded sections of the second force-transmitting steel pipes are provided on the steel pipe crossbeam along its own axis, and the three corners of the triangular steel plate are respectively hinged to the other end of the two first force-transmitting steel pipes and the other end of the second force-transmitting steel pipe through hinge bolts.

5. The underground space communication method according to claim 3, wherein: By pulling the steel pipe crossbeam horizontally in a direction away from the steel box wall, the angle of the two first force-transmitting steel pipes becomes smaller, and the two first force-transmitting steel pipes drive the corresponding first steel pipe lock buckles to approach each other along the axial direction of the solid steel pipe, so that the corresponding solid pipes retract into the steel box wall; by pushing the steel pipe crossbeam horizontally in a direction close to the steel box wall, the angle of the two first force-transmitting steel pipes becomes larger, and the two first force-transmitting steel pipes drive the corresponding first steel pipe lock buckles to move away from each other along the axial direction of the solid steel pipe, so that the corresponding solid pipes extend out of the steel box wall from the corresponding through holes of the steel box wall.

6. The underground space connection method according to claim 1, wherein: The locking system 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 provided on the left and right side panels 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.

7. The underground space communication method according to claim 5, wherein: A guide cylinder is also provided in the steel box wall. The guide cylinder is arranged obliquely. The number of the guide cylinders is the same as the number of the second steel pipe lock buckles. The upper end of the guide cylinder is fixedly provided at the corresponding hole of the side panel of the steel box wall.

8. The underground space connection method according to claim 1, wherein: The long wooden slats are fixedly connected to the end portion of the locking system for connecting the pull rod mechanism via a steel wire. When the long wooden slats are taken out of the slot, the end portion of the locking system for connecting the pull rod mechanism can be pulled out of the slot.

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