Air bag type force transmission structure of narrow fat groove assembly type subway station and construction method

Abstract

The narrow fat groove assembly type subway station air bag type force transmission structure comprises an air bag assembly, an inflation assembly and a grouting assembly, the air bag assembly is arranged in a fat groove and located between a soil body enclosure structure and a prefabricated side wall, the air bag assembly is connected with the inflation assembly, one end of the grouting assembly is located between the soil body enclosure structure and the prefabricated side wall, and the other end of the grouting assembly is connected with the inflation assembly. After pressure stress is effectively transmitted through the air bag assemblies, the overall structure of the station can be assembled, then high-strength cement grout is poured into the fertilizer grooves, complete filling of the fertilizer grooves is achieved, the method is suitable for construction of the fabricated subway station without a boss on the outer side of a contour, the earthwork excavation volume of a foundation pit and the volume of an enclosure structure are reduced, and the construction cost is reduced. The invention further provides a construction method, and the construction method is used for construction of the air bag type force transmission structure of the narrow fat groove assembly type subway station and the air bag type force transmission structure of the narrow fat groove assembly type subway station, and the construction method is used for construction of the air bag type force transmission structure of the narrow fat groove assembly type subway station.

Description

Technical Field

[0001] The invention belongs to the field of urban rail transit, and in particular relates to an airbag-type force transmission structure of a narrow and wide trough assembled subway station and a construction method thereof. Background Art

[0002] Prefabricated buildings represent the future trend of the modern construction industry due to their high production efficiency, precise components, and green environmental protection. Unlike the construction mode of cast-in-place subway stations, prefabricated subway stations are constructed by splitting the beams, slabs, columns, walls and other components of the main structure, prefabricating them in a standardized and modular factory, transporting them to the site, and using lifting equipment to lift each segmented component into an open excavation pit for assembly. Each segmented component is fastened with connecting steel bars to form a whole.

[0003] The main structural concrete of the cast-in-place subway station is constructed close to the retaining structure. After the bottom plate, middle plate and top plate are constructed, hinge supports can be formed to resist the lateral earth pressure of the soil. Then the internal supports at the corresponding positions can be installed in sequence. The construction method of prefabricated and assembled subway stations is significantly different. In order to facilitate the lifting and placement of prefabricated structures, the width of the open excavation pit is often larger than the outer contour size of the main structure, and there is a fat groove (gap) between the two. This leads to the fact that after the internal support system is removed, the retaining structure of the foundation pit is very likely to become unstable under the huge earth pressure. Therefore, it is necessary to set an intermediate force transmission component between the soil structure and the prefabricated components so that the two can form a force system together to resist the earth pressure.

[0004] In the previous design of prefabricated subway stations, a 50cm wide boss was set at the connection between the station floor and the bottom of the side wall, and at the connection between the top plate and the top of the side wall. The boss is used to provide the construction of the connecting steel rod. The advantage of this design method is that it provides sufficient space for workers to operate, which is not only convenient for installing the connecting steel rod at the boss, but also convenient for the manual installation of the force transmission components between the prefabricated components and the surrounding structure. However, this method also has disadvantages, that is, the wide fat trough of the foundation pit greatly increases the earthwork excavation volume and the volume of the surrounding structure of the foundation pit, occupies the tight surface area of ​​the city, increases the workload of pipeline relocation and relocation of existing buildings, and increases the project cost and construction period. For this reason, in the new prefabricated subway station structure design, the outer boss of the outline is cancelled, and the width of the fat trough is also greatly compressed, resulting in the force transmission components and construction methods in the existing technology not being suitable for the construction of the new prefabricated subway station, and unable to effectively guarantee the normal operation of the intermediate force transmission components. Summary of the invention

[0005] The present invention is made to solve the above problems, and aims to provide an intermediate force transmission structure suitable for narrow fat troughs, which can be suitable for the construction of assembled subway stations without contour outer bosses, can reduce the amount of earthwork excavation in foundation pits and the volume of retaining structures, can reduce the occupation of tight urban surface area, can reduce the workload of pipeline relocation and relocation of existing buildings, can reduce the project cost and construction period, and can effectively adjust the pressure size and expansion width of the force transmission structure. The airbag force transmission structure and construction method of the assembled subway station with narrow fat troughs. In order to achieve the above purposes, the technical solutions adopted by the present invention are:

[0006] The present invention provides an airbag-type force transmission structure for a narrow trough assembled subway station, which has the following characteristics: it includes an airbag component, an inflation component and a grouting component. The airbag component is arranged in the trough, between the soil retaining structure and the prefabricated side wall. The airbag component is connected to the inflation component. One end of the grouting component is located between the soil retaining structure and the prefabricated side wall.

[0007] In the narrow and wide slot assembled subway station airbag force transmission structure provided by the present invention, it can also have such a feature that the airbag assembly includes an inflation tube and a first airbag, a second airbag and a third airbag arranged on the inflation tube.

[0008] In the narrow and wide trough assembled subway station airbag force transmission structure provided by the present invention, it can also have such a feature that the first airbag is located on one side of the prefabricated side wall, corresponding to the position of the prefabricated bottom plate; the second airbag is located on one side of the prefabricated side wall, corresponding to the position of the prefabricated middle plate; the third airbag is located on one side of the prefabricated side wall, corresponding to the position of the prefabricated top plate.

[0009] In the narrow fat trough assembled subway station airbag type force transmission structure provided by the present invention, it can also have such a feature that the inflation component includes an air pump, the air pump is connected to the inflation pipe, and the air pump is connected to a nitrogen bottle.

[0010] In the narrow and fat trough assembled subway station airbag force transmission structure provided by the present invention, it can also have such a feature that the inflation component also includes an inflation valve and a pressure gauge, the inflation valve is arranged on the inflation tube, the pressure gauge is arranged on the inflation tube, and the inflation valve is located between the air pump and the pressure gauge.

[0011] In the narrow fat trough assembled subway station airbag force transmission structure provided by the present invention, it can also have such a feature that the grouting assembly includes a grouting pipe and a grouting pump, one end of the grouting pipe extends between the soil retaining structure and the prefabricated side wall, and the grouting pump is arranged on the grouting pipe.

[0012] In the narrow fat trough assembled subway station airbag type force transmission structure provided by the present invention, it can also have such a feature that a grouting valve and a hydraulic gauge are provided on the grouting pipe, the grouting valve is arranged on the grouting pipe, the hydraulic gauge is arranged on the grouting pipe, and the grouting valve is located between the grouting pump and the hydraulic gauge.

[0013] The present invention also provides a construction method, which uses the above-mentioned narrow and fat trough assembled subway station airbag type force transmission structure to construct an assembled station, and has the following characteristics, including the following steps: step S1, soil retaining structure construction and foundation pit excavation; step S2, prefabricated component assembly and force transmission structure construction; step S3, cement slurry injection.

[0014] In the construction method provided by the present invention, it can also have such a feature that step S2 includes the following sub-steps: step S2-1, hoisting the prefabricated bottom plate, and inflating the first airbag; step S2-2, hoisting the prefabricated side wall, connecting the prefabricated bottom plate and the prefabricated side wall, inflating the second airbag, and pouring cement slurry between the second airbag and the first airbag; step S2-3, hoisting the prefabricated middle plate, and connecting the prefabricated middle plate with the prefabricated side wall; step S2-4, hoisting the prefabricated top plate, connecting the prefabricated top plate with the prefabricated side wall, inflating the third airbag, and pouring cement slurry between the third airbag and the second airbag.

[0015] The construction method provided by the present invention may also have such a feature that in step S3, the first airbag, the second airbag and the third airbag are deflated, the airbag assembly is retracted, and cement slurry is replenished to the original placement positions of the first airbag, the second airbag and the third airbag.

[0016] The technical effect of the present invention is as follows: the airbag force transmission structure of the narrow fertilizer trough prefabricated subway station provided by the present invention includes an airbag component, an inflation component and a grouting component. The airbag component is arranged in the fertilizer trough, located between the soil retaining structure and the prefabricated side wall. The airbag component is connected to the inflation component. One end of the grouting component is located between the soil retaining structure and the prefabricated side wall. After the compressive stress is effectively transmitted by the airbag component, the assembly of the overall structure of the station can be realized, and then high-strength cement slurry is poured into the fertilizer trough to achieve complete filling of the fertilizer trough. It can be suitable for the construction of prefabricated subway stations that cancel the outer boss of the contour, can reduce the amount of excavation of foundation pit earthwork and the volume of retaining structure, can reduce the occupation of tight surface area in the city, can reduce the workload of pipeline relocation and relocation of existing buildings, can reduce the project cost and construction period, and can effectively adjust the pressure size and expansion width of the force transmission structure. The present invention also provides a construction method for the construction of the airbag force transmission structure of the narrow fertilizer trough prefabricated subway station.

[0017] Therefore, the airbag-type force transmission structure of the narrow and fat trough prefabricated subway station provided by the present invention is suitable for the middle force transmission structure of the narrow and fat trough, can be suitable for the construction of prefabricated subway stations that cancel the outer boss of the contour, can reduce the amount of earth and stone excavation in the foundation pit and the volume of the retaining structure, can reduce the occupation of the tight surface area in the city, can reduce the workload of pipeline relocation and relocation of existing buildings, can reduce the project cost and construction period, can effectively adjust the pressure size and expansion width of the force transmission structure, and the construction method provided by the present invention effectively solves the problem that the narrow and fat trough prefabricated subway cannot manually install the middle force transmission component, can efficiently adjust the installation verticality of the prefabricated structure, and effectively transmit the soil pressure, so as to achieve the purpose of safe and reliable construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification includes the following drawings, which show the following contents:

[0019] Figure 1 It is a structural schematic diagram of the airbag-type force transmission structure of a narrow and wide trough assembled subway station in an embodiment of the present invention.

[0020] Figure 2 is a schematic diagram of the structure of step S1 in an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of step S2-1 in an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of steps S2-2 and S2-3 in an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of step S2-4 in an embodiment of the present invention;

[0024] Figure 6 It is a structural diagram of step S3 in an embodiment of the present invention.

[0025] Marked in the figure: 1-fertilizer trough, 2-soil retaining structure, 3-prefabricated side wall, 4-prefabricated bottom plate, 5-prefabricated middle plate, 6-prefabricated top plate, 7-foundation pit, 10-air bag assembly, 11-inflation pipe, 12-first air bag, 13-second air bag, 14-third air bag, 20-inflation assembly, 21-air pump, 22-inflation valve, 23-pressure gauge, 30-grouting assembly, 31-grouting pipe, 32-grouting pump, 33-grouting valve, 34-hydraulic gauge. DETAILED DESCRIPTION

[0026] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and facilitating their implementation.

[0027] Figure 1 It is a structural schematic diagram of the airbag-type force transmission structure of a narrow and wide trough assembled subway station in an embodiment of the present invention.

[0028] like Figure 1 As shown, the airbag force transmission structure of the narrow fertilizer trough prefabricated subway station provided by the present invention includes an airbag component 10, an inflation component 20 and a grouting component 30. The airbag component 10 is arranged in the fertilizer trough 1, between the soil retaining structure 2 and the prefabricated side wall 3, the airbag component 10 is connected to the inflation component 20, and one end of the grouting component 30 is located between the soil retaining structure 2 and the prefabricated side wall 3. After the compressive stress is effectively transmitted by the airbag component 10, the assembly of the overall structure of the station can be realized, and then high-strength cement slurry is poured into the fertilizer trough through the grouting component 30 to achieve complete filling of the fertilizer trough 1. It can be suitable for the construction of prefabricated subway stations that cancel the outer boss of the contour, can reduce the amount of excavation of earth and stone in the foundation pit and the volume of the retaining structure, can reduce the occupation of the tense surface area in the city, can reduce the workload of pipeline relocation and relocation of existing buildings, can reduce the project cost and construction period, and can effectively adjust the pressure size and expansion width of the force transmission structure.

[0029] like Figure 1 As shown, the airbag assembly 10 includes an inflation tube 11 and a first airbag 12, a second airbag 13 and a third airbag 14 arranged on the inflation tube 11, the first airbag 12 is located on one side of the prefabricated side wall 3, between the soil retaining structure 2 and the prefabricated side wall 3, the prefabricated bottom plate 4 is located on the other side of the prefabricated side wall 3, and the position of the prefabricated bottom plate 4 corresponds to the position of the first airbag 12; the second airbag 13 is located on one side of the prefabricated side wall 3, between the soil retaining structure 2 and the prefabricated side wall 3, the prefabricated middle plate 5 is located on the other side of the prefabricated side wall 3, and the position of the prefabricated middle plate 5 corresponds to the position of the second airbag 13; the third airbag 14 is located on one side of the prefabricated side wall 3, between the soil retaining structure 2 and the prefabricated side wall 3, the prefabricated top plate 6 is located on the other side of the prefabricated side wall 3, and the position of the prefabricated top plate 6 corresponds to the position of the third airbag 14.

[0030] The inflation assembly 20 includes an air pump 21, which is connected to the inflation pipe 11. The air pump 21 is connected to a nitrogen cylinder. The air pump 21 can pump the high-pressure nitrogen in the nitrogen cylinder into the first airbag 12, the second airbag 13 and the third airbag 14, so that the first airbag 12, the second airbag 13 and the third airbag 14 expand and abut against the soil retaining structure 2 and the prefabricated components. It can play a role in initially transferring the soil pressure in the fertilizer trough, and can transfer the soil pressure between the soil retaining structure 2 and the prefabricated components, so that the soil retaining structure 2 and the prefabricated components form a force system together to jointly resist the soil pressure.

[0031] The inflation component 20 also includes an inflation valve 22 and a pressure gauge 23. The inflation valve 22 is arranged on the inflation tube 11, and the pressure gauge 23 is arranged on the inflation tube 11. The inflation valve 22 is located between the air pump 21 and the pressure gauge 23. The inflation valve 22 can control the circulation or closure of the inflation tube 11. After the nitrogen filling is completed, the inflation valve 22 can be closed to prevent the leakage of nitrogen in the inflation tube 11, thereby improving the reliability of the structure; the pressure gauge 23 can detect the gas pressure in the inflation tube 11, and it is convenient to grasp the gas pressure in the inflation tube 11, the first airbag 12, the second airbag 13 and the third airbag 14. The degree of expansion of the airbag can be grasped according to the gas pressure, and the degree of expansion of the airbag can be adjusted according to the construction accuracy, and the operability is strong.

[0032] The grouting assembly 30 includes a grouting pipe 31 and a grouting pump 32. One end of the grouting pipe 31 extends between the soil retaining structure 2 and the prefabricated side wall 3. The grouting pump 32 is arranged on the grouting pipe 31. The grouting pump 32 is connected to the tank truck and can pump the evenly stirred cement slurry in the tank truck to between the soil retaining structure 2 and the prefabricated side wall 3 through the grouting pipe 31. The fertilizer trough between the soil retaining structure 2 and the prefabricated side wall 3 is filled with cement slurry, which can play a role in stably transmitting soil pressure in the fertilizer trough, and can transmit soil pressure between the soil retaining structure 2 and the prefabricated components, so that the soil retaining structure 2 and the prefabricated components form a force system together to cooperate in resisting the soil pressure.

[0033] A grouting valve 33 and a hydraulic gauge 34 are provided on the grouting pipe 31. The grouting valve 33 is arranged on the grouting pipe 31, and the hydraulic gauge 34 is arranged on the grouting pipe 31. The grouting valve 33 is located between the grouting pump 32 and the hydraulic gauge 34. The grouting valve 33 can control the circulation or closure of the grouting pipe 31, thereby controlling the circulation of cement slurry; the hydraulic gauge 34 can detect the cement slurry pressure in the grouting pipe 31, facilitate the circulation of cement slurry in the grouting pipe 31, and improve the reliability of the structure.

[0034] The present invention also provides a construction method, which uses the above-mentioned narrow and fat trough assembled subway station airbag type force transmission structure to carry out assembled station construction, comprising the following steps:

[0035] Figure 2 It is a structural diagram of step S1 in an embodiment of the present invention.

[0036] Step S1, such as Figure 2 As shown, the construction of the earth retaining structure 2 and the excavation of the foundation pit 7 are carried out. The earth retaining structure 2 is constructed according to the design requirements, the foundation pit 7 is excavated to the designed depth, and the fine leveling strip at the bottom of the foundation pit 7 is constructed. During the construction of the earth retaining structure 2, the first airbag 12, the second airbag 13 and the third airbag 14 are placed on the earth retaining structure 2.

[0037] Step S2: assembly of prefabricated components and construction of force transmission structure.

[0038] In step S2, the following sub-steps are included:

[0039] Figure 3 It is a schematic diagram of the structure of step S2-1 in an embodiment of the present invention.

[0040] Step S2-1, such as Figure 3 As shown, the prefabricated base plate 4 is hoisted and installed at the bottom of the foundation pit 7, the air pump 21 is started, and nitrogen is transported to the first air bag 12 through the inflation pipe 11. The first air bag 12 is inflated and expanded. The first air bag 12 abuts against the soil retaining structure 2 and the prefabricated base plate 4, so that the first air bag 12 transmits the soil pressure, and the inflation pressure is monitored by the pressure gauge 23 to ensure the accuracy of the construction.

[0041] Figure 4 It is a schematic diagram of the structure of steps S2-2 and S2-3 in an embodiment of the present invention.

[0042] Step S2-2, such as Figure 4 As shown, the prefabricated side wall 3 is hoisted, the prefabricated side wall 3 is connected to the prefabricated bottom plate 4, the air pump 21 is started, and nitrogen is transported to the second airbag 13 through the inflation pipe 11, the second airbag 13 is inflated, and the second airbag 13 abuts against the soil enclosure structure 2 and the prefabricated side wall 3, so that the second airbag 13 transmits the soil pressure, and the inflation pressure is monitored by the barometer 23 to ensure the accuracy of the construction. The cement slurry is poured through the grouting assembly 30, one end of the grouting pipe 31 is extended between the second airbag 13 and the first airbag 12, the grouting pump 32 is started, and the cement slurry stirred evenly in the tank truck is poured into the fertilizer tank between the second airbag 13 and the first airbag 12 through the grouting pipe 31.

[0043] Step S2-3, such as Figure 4 As shown, the prefabricated middle plate 5 is hoisted and connected to the prefabricated side wall 3 .

[0044] Figure 5 It is a schematic diagram of the structure of step S2-4 in an embodiment of the present invention.

[0045] Step S2-4, such as Figure 5As shown, the prefabricated top plate 6 is hoisted, the prefabricated top plate 6 is connected to the prefabricated side wall 3, the air pump 21 is started, and nitrogen is transported to the third airbag 14 through the inflation pipe 11, the third airbag 14 is inflated, and the third airbag 14 abuts against the soil enclosure structure 2 and the prefabricated bottom plate 4, so that the third airbag 14 transmits the soil pressure, and the inflation pressure is monitored by the barometer 23 to ensure the accuracy of the construction. The cement slurry is poured through the grouting assembly 30, one end of the grouting pipe 31 is extended between the third airbag 14 and the second airbag 13, the grouting pump 32 is started, and the cement slurry stirred evenly in the tank truck is poured into the fertilizer tank between the third airbag 14 and the second airbag 13 through the grouting pipe 31.

[0046] Figure 6 It is a structural diagram of step S3 in an embodiment of the present invention.

[0047] Step S3, such as Figure 6 As shown, cement slurry is replenished. When the cement slurry poured in step S2 begins to solidify, the first airbag 12, the second airbag 13 and the third airbag 14 are deflated and contracted, and the airbag assembly 10 is retracted through the inflation tube 11. One end of the grouting tube 31 extends along the original path of the connecting tube 11 to the original placement positions of the first airbag 12, the second airbag 13 and the third airbag 14, and cement slurry is replenished to the original placement positions of the first airbag 12, the second airbag 13 and the third airbag 14, so that the cement slurry in the fertilizer tank is completely filled, which can stably play the role of transmitting soil pressure in the fertilizer tank, and can transmit soil pressure between the soil retaining structure 2 and the prefabricated components, so that the soil retaining structure 2 and the prefabricated components form a force system together to cooperate in resisting soil pressure.

[0048] Therefore, the narrow and wide trough prefabricated subway station airbag-type force transmission structure and construction method provided by the present invention can be applicable to the construction of prefabricated subway stations that eliminate the outer boss of the contour, can reduce the amount of earth and stone excavation in the foundation pit and the volume of the retaining structure, can reduce the occupation of the tight surface area in the city, can reduce the workload of pipeline relocation and relocation of existing buildings, can reduce the project cost and construction period, and can effectively adjust the pressure size and expansion width of the force transmission structure.

[0049] Functions and Effects of the Embodiments

[0050] The airbag force transmission structure of the narrow fertilizer trough prefabricated subway station provided by the present invention comprises an airbag assembly 10, an inflation assembly 20 and a grouting assembly 30. The airbag assembly 10 is arranged in the fertilizer trough 1, between the soil retaining structure 2 and the prefabricated side wall 3, the airbag assembly 10 is connected to the inflation assembly 20, and one end of the grouting assembly 30 is located between the soil retaining structure 2 and the prefabricated side wall 3. After the compressive stress is effectively transmitted by the airbag assembly 10, the assembly of the overall structure of the station can be realized, and then high-strength cement slurry is poured into the fertilizer trough through the grouting assembly 30 to achieve complete filling of the fertilizer trough 1. It can be suitable for the construction of prefabricated subway stations that eliminate the outer boss of the contour, can reduce the amount of excavation of earth and stone in the foundation pit and the volume of the retaining structure, can reduce the occupation of the tense surface area in the city, can reduce the workload of pipeline relocation and relocation of existing buildings, can reduce the project cost and construction period, and can effectively adjust the pressure size and expansion width of the force transmission structure. Therefore, the airbag-type force transmission structure of the narrow and fat trough prefabricated subway station provided by the present invention is suitable for the middle force transmission structure of the narrow and fat trough, can be suitable for the construction of prefabricated subway stations that cancel the outer boss of the contour, can reduce the amount of earth and stone excavation in the foundation pit and the volume of the retaining structure, can reduce the occupation of the tight surface area in the city, can reduce the workload of pipeline relocation and relocation of existing buildings, can reduce the project cost and construction period, can effectively adjust the pressure size and expansion width of the force transmission structure, and the construction method provided by the present invention effectively solves the problem that the narrow and fat trough prefabricated subway cannot manually install the middle force transmission component, can efficiently adjust the installation verticality of the prefabricated structure, and effectively transmit the soil pressure, so as to achieve the purpose of safe and reliable construction.

[0051] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A narrow and wide trough assembled subway station airbag force transmission structure, characterized in that: The invention comprises an airbag component (10), an inflation component (20) and a grouting component (30); the airbag component (10) is arranged in a fertilizer trough (1) and is located between a soil body retaining structure (2) and a prefabricated side wall (3); the airbag component (10) is connected to the inflation component (20); and one end of the grouting component (30) is located between the soil body retaining structure and the prefabricated side wall (3).

2. The airbag force transmission structure of the narrow and wide trough assembled subway station according to claim 1 is characterized in that: The airbag assembly (10) comprises an inflation tube (11) and a first airbag (12), a second airbag (13) and a third airbag (14) arranged on the inflation tube (11).

3. The airbag force transmission structure of the narrow and wide slot assembled subway station according to claim 2 is characterized in that: The first airbag (12) is located on one side of the prefabricated side wall (3), corresponding to the position of the prefabricated bottom plate (4); the second airbag (13) is located on one side of the prefabricated side wall (3), corresponding to the position of the prefabricated middle plate (5); and the third airbag (14) is located on one side of the prefabricated side wall (3), corresponding to the position of the prefabricated top plate (6).

4. The airbag force transmission structure of the narrow and wide trough assembled subway station according to claim 3 is characterized in that: The inflation component (20) comprises an air pump (21), wherein the air pump (21) is connected to the inflation tube (11), and the air pump (21) is connected to a nitrogen bottle.

5. The airbag force transmission structure of the narrow and wide trough assembled subway station according to claim 5 is characterized in that: The inflation component (20) further comprises an inflation valve (22) and an air pressure gauge (23); the inflation valve (22) is arranged on the inflation tube (11); the air pressure gauge (23) is arranged on the inflation tube (11); the inflation valve (22) is located between the air pump (21) and the air pressure gauge (23).

6. The airbag force transmission structure of the narrow and wide trough assembled subway station according to claim 5 is characterized in that: The grouting assembly (30) comprises a grouting pipe (31) and a grouting pump (32); one end of the grouting pipe (31) extends between the earth body retaining structure (2) and the prefabricated side wall (3); and the grouting pump (32) is arranged on the grouting pipe (31).

7. The airbag force transmission structure of the narrow and wide trough assembled subway station according to claim 6 is characterized in that: The grouting pipe (31) is provided with a grouting valve (33) and a hydraulic gauge (34); the grouting valve (33) is arranged on the grouting pipe (31); the hydraulic gauge (34) is arranged on the grouting pipe (31); and the grouting valve (33) is located between the grouting pump (32) and the hydraulic gauge (34).

8. A construction method, using the airbag force transmission structure of the narrow and wide slot assembled subway station as described in any one of claims 1 to 7 to construct an assembled station, characterized in that: The following steps are involved: Step S1, construction of soil retaining structure and excavation of foundation pit; Step S2, assembly of prefabricated components and construction of force transmission structure; Step S3, cement slurry injection.

9. The construction method according to claim 8, characterized in that: The step S2 includes the following sub-steps: step S2-1, hoisting the prefabricated bottom plate, and inflating the first airbag; step S2-2, hoisting the prefabricated side wall, connecting the prefabricated bottom plate and the prefabricated side wall, inflating the second airbag, and pouring cement slurry between the second airbag and the first airbag; step S2-3, hoisting the prefabricated middle plate, and connecting the prefabricated middle plate and the prefabricated side wall; step S2-4, hoisting the prefabricated top plate, connecting the prefabricated top plate and the prefabricated side wall, inflating the third airbag, and pouring cement slurry between the third airbag and the second airbag.

10. The construction method according to claim 9, characterized in that: In step S3, the first airbag, the second airbag and the third airbag are deflated, the airbag assembly is retracted, and cement slurry is refilled into the original placement positions of the first airbag, the second airbag and the third airbag.

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