CN111364513A - Subway co-construction underground station structure and construction method thereof - Google Patents
Subway co-construction underground station structure and construction method thereof Download PDFInfo
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- 239000002131 composite material Substances 0.000 claims description 6
- 210000002435 tendon Anatomy 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000009417 prefabrication Methods 0.000 claims description 4
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- 238000009412 basement excavation Methods 0.000 abstract description 3
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Abstract
The invention relates to an underground station structure built by highway and railway, which comprises a plurality of shield segments, wherein concrete linings are arranged in the shield segments, underground station spaces are formed in the concrete linings, top plates, underground two-layer plates, underground three-layer plates and underground four-layer plates are arranged in the concrete linings, the underground station spaces are divided into a highway pipeline layer, a municipal highway layer, a subway station hall layer, a subway station layer and a comprehensive bottom layer, and brackets are arranged on the bottom sides of the top plates, the underground two-layer plates and the underground three-layer plates by the concrete linings; the municipal highway layer comprises a highway and an evacuation channel, a first partition wall is arranged between the evacuation channel and the highway, and a plurality of escape doors are arranged on the first partition wall; the subway station platform layer comprises a prefabricated platform and a subway track, a platform cast-in-place layer is arranged on the prefabricated platform, and a prefabricated air duct is arranged at the bottom of the underground three-layer plate; a prefabricated box type frame is arranged in the comprehensive bottom layer; also relates to a construction method for jointly building the underground station structure by the highway and railway, which comprises seven steps. The invention can solve the difficult problem of underground station excavation construction under complex environmental conditions.
Description
Technical Field
The invention relates to the technical field of underground engineering, in particular to a highway and railway combined construction underground station structure and a construction method thereof.
Background
At present, box-type frames are generally adopted in underground stations, and construction methods generally comprise an open cut method (cover cut method) and a subsurface cut method. The mining method is underground excavated, is greatly influenced by geological conditions, has low mechanization degree, is manually excavated and constructed, has high risk and low quality, and has common water leakage; the open cut method (cover cut method) requires open large excavation, and under special environmental conditions (underpass main roads, rivers, mountains, buildings and the like), traffic fluffing, pipeline moving and modifying, removal and land collection, river and mountain moving and modifying and the like have huge engineering amount and coordination difficulty, quite high investment and huge implementation difficulty.
Meanwhile, the existing municipal roads, subway stations, municipal pipe networks and the like are generally designed in a separated structure, so that the planning, the design, the construction and the transformation are independent, the overall coordination and the overall planning are lacked, the scientific planning is lacked, unnecessary engineering abandonment is caused due to the contradiction between the planning, the planning and the engineering, and the concept of energy conservation, environmental protection and green construction is contradictory.
In addition, the evacuation capacity of the existing safety facilities of the underground engineering needs to be improved, the accident risk needs to be reduced, and the drainage efficiency needs to be improved. Therefore, improvement is desired.
Disclosure of Invention
The invention provides a highway and railway combined construction underground station structure and a construction method thereof, which solve the technical problems.
The scheme for solving the technical problems is as follows:
the invention relates to an underground station structure built by highway and railway, which comprises a plurality of sections of cylindrical shield segments spliced ring by ring, wherein a concrete lining is arranged on the inner side of each shield segment, an underground station space is formed in the concrete lining, a top plate, an underground two-layer plate, an underground three-layer plate and an underground four-layer plate which are parallel to a horizontal plane are sequentially arranged in the concrete lining from top to bottom, the underground station space is divided into a highway pipeline layer, a municipal highway layer, a subway station hall layer, a subway station platform layer and a comprehensive bottom layer from top to bottom, and brackets are arranged at two ends of the bottom side of the top plate, the underground two-layer plate and the underground three-layer plate by the concrete lining; the urban highway layer comprises a highway positioned in the middle of the urban highway layer and evacuation channels positioned on two sides of the highway, a first partition wall is arranged between each evacuation channel and the highway, and the first partition wall is provided with a plurality of escape doors; the subway station platform layer comprises a prefabricated station platform positioned in the middle of the subway station platform layer and subway rails positioned on two sides of the subway station platform, a platform cast-in-place layer is arranged on the upper side of the prefabricated station platform, and prefabricated air channels are arranged at the bottom of the underground three-layer plate above the subway rails; and a prefabricated box type frame is arranged in the comprehensive bottom layer.
The construction method for jointly building the underground station structure by the highway and the railway comprises the following steps: respectively constructing an originating well and a receiving well at two ends of a designed underground station structure; hoisting a shield from a starting well, splicing shield segments ring by ring, arranging a secondary lining template trolley behind the shield, splicing and smearing rigid waterproof materials on the inner sides of the shield segments to form a concrete lining, reserving corbels, pre-burying a first support and a second support, and then hoisting the shield to a receiving well; step three, constructing a prefabricated box type frame, a top plate, an underground two-layer plate and an underground three-layer plate by adopting a mechanical assembly method, wherein the underground two-layer plate, the underground three-layer plate and an upper plate of the frame form a rough surface and a rib hole in the prefabrication process, binding prestressed ribs during assembly, tensioning and anchoring to ensure firm connection and synchronously pouring to form a whole, and embedding a steel groove and a pipeline lifting hook in the prefabrication process of the underground three-layer plate; step four, constructing a cast-in-place plate structure and an underground four-layer plate respectively by taking an underground two-layer plate, an underground three-layer plate and a prefabricated box type frame as templates, reserving clamping block positions for the cast-in-place plate structure and the underground four-layer plate, binding prestressed tendons during clamping block assembly, tensioning and anchoring, ensuring firm connection and synchronously pouring to form a whole; step five, assembling and constructing a prefabricated platform, a first partition wall and a second partition wall, wherein the first partition wall and the second partition wall are also prefabricated parts, and constructing a platform cast-in-place layer by taking the prefabricated platform as a template; erecting a highway pipeline, a municipal pipeline and a subway pipeline; and seventhly, finishing construction by combining the auxiliary structures of the starting well and the receiving well.
The invention has the beneficial effects that:
the method adopts a plurality of sections of cylindrical shield segments spliced ring by ring, and adopts one-time tunneling construction to form a large-section circular main body structure, so that the mechanized assembly type construction is favorably realized, the quality is high, the speed is high, and the difficulty and the cost caused by traffic fluffiness, pipeline relocation, land collection and removal, river and mountain relocation and the like can be effectively reduced or avoided; the environment-friendly energy-saving effect is achieved, and the development concept and industrial policy of national safety, green and environmental protection are met; the deeper the station depth, the more the standardized stations are, the more prominent the economic advantages of the invention are, and the difficult problem of underground station subsurface excavation construction under complex environmental conditions (underpass main road, major pipeline, building structure, bridge, river, mountain, etc.) can be effectively solved;
the inner side of the shield segment is provided with the concrete lining, and the integral composite structure of the secondary lining is formed by adopting one-time propelling construction, so that the shield segment has the advantages of high strength, good stress performance, strong bearing capacity and the like; the concrete lining is formed after the rigid waterproof material is spliced and coated on the inner side of the shield segment, so that the problem of water leakage can be effectively solved, and the waterproof performance of the underground station of the large shield can be effectively improved;
the concrete lining is internally and sequentially provided with a top plate, an underground two-layer plate, an underground three-layer plate and an underground four-layer plate from top to bottom, the underground station space is divided into a road pipeline layer, a municipal road layer, a subway station hall layer, a subway station platform layer and a comprehensive bottom layer from top to bottom, the space is favorably and fully utilized, municipal roads, underground stations and various pipelines are reasonably arranged, the high fusion of the underground stations, the municipal roads (one-way or two-way lanes) and a comprehensive pipe gallery is favorably realized, the comprehensive functions of the municipal roads, rail traffic and various pipelines (such as supplying wind, water, electricity and the like) are favorably and efficiently integrated, and the section utilization rate and the economic benefit of the large shield underground station are favorably improved;
the corbels are arranged at the two ends of the bottom sides of the top plate, the underground two-layer plate and the underground three-layer plate of the concrete lining, so that the supporting strength of the top plate, the underground two-layer plate and the underground three-layer plate is favorably improved, and the corbels are reserved, so that the mechanical assembly at the later stage is facilitated, no additional template or scaffold is needed, the construction period can be greatly shortened, and the efficiency is improved; the size of each bracket is selected according to the requirements of the application scene, so that the strength and stress requirements are ensured;
the municipal highway layer comprises a highway positioned in the middle of the municipal highway layer and evacuation channels positioned on two sides of the highway, a first partition wall is arranged between each evacuation channel and the highway, and a plurality of escape doors are arranged on each first partition wall, so that the evacuation capacity in emergency can be effectively improved, and the accident risk is reduced;
prefabricated platform, prefabricated wind channel and prefabricated box frame all adopt prefabricated construction, and bilateral symmetry arranges, can reduce the assembly degree of difficulty to a great extent, and the reduction of erection time improves the efficiency of construction, reduces the load to connecting piece and carrier, guarantees life.
For the construction method, only the starting well and the receiving well need to be constructed by open cut, a large amount of temporary supporting structures can be saved, the cost is saved, the deeper the underground is, the more the economic value is considerable, the starting well and the receiving well can also be used as a feed opening for secondary structure construction in the later period and a working well for assembly type operation, and auxiliary structures such as a station access opening, a wind pavilion and the like can also be connected out;
the underground two-layer plate, the underground three-layer plate and the frame upper plate form a rough surface and a rib hole in the prefabricating process, and prestressed ribs are bound during assembly and then tensioned and anchored, so that firm connection with cast-in-place concrete is ensured, an integral composite structure is formed, the strength is improved, and leakage is prevented;
the two-layer underground plate, the three-layer underground plate and the prefabricated box type frame are used as templates, and a cast-in-place plate structure and the four-layer underground plate are respectively constructed, so that the using amount of the templates can be greatly reduced, the construction difficulty is reduced, the construction period is shortened, and the efficiency is improved.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, a rigid waterproof layer is arranged between the concrete lining and the shield segment, the rigid waterproof layer and the concrete lining form a composite structure.
The beneficial effect of adopting the further scheme is that: the shield has the advantages of high strength, good stress performance and strong bearing capacity, can effectively solve the problem of water leakage, and can effectively improve the waterproof performance of the large shield underground station.
Further, the top plate, the underground two-layer plate and the underground three-layer plate are all of prefabricated prestressed plate structures, and the underground four-layer plate is of a cast-in-place structure.
The beneficial effect of adopting the further scheme is that: the post mechanized assembly of being convenient for need not extra template or scaffold frame, can shorten the time limit for a project by a wide margin, reduces the assembly degree of difficulty, improves the efficiency of construction, guarantees life.
Further, the upper sides of the underground two-layer plate and the underground three-layer plate are both provided with cast-in-place plate structures, and the cast-in-place plate structures and the underground four-layer plate are both provided with embedded steel bar connectors at the contact parts with the concrete lining, so that the concrete lining, the cast-in-place plate structures and the underground four-layer plate form a whole.
The beneficial effect of adopting the further scheme is that: the method is favorable for ensuring the firm connection between the underground two-layer plate and the underground three-layer plate and the cast-in-place plate structure, ensuring the integral composite structure formed by the underground four-layer plate and the concrete lining, improving the strength and preventing leakage.
Furthermore, a second partition wall is arranged between the evacuation channel and the concrete lining, a first support is arranged between the second partition wall and the concrete lining, and the first support is provided with municipal pipelines; and a second support is arranged on the inner side of the concrete lining in the subway station platform layer, and a subway pipeline is erected on the second support.
The beneficial effect of adopting the further scheme is that: the first support and the second support adopt a pre-buried mode, are high in strength, good in stress performance and strong in bearing capacity, can effectively bear and classify various pipelines, are convenient to maintain or replace, and save relocation cost.
Furthermore, the prefabricated box type frame comprises two independent parts which are bilaterally symmetrical, each part comprises a frame upper plate which is parallel to the four underground plates, an arc-shaped bottom plate which is matched with the arc-shaped inner wall of the concrete lining, a frame side wall which connects the frame upper plate and the arc-shaped bottom plate, and an intermediate wall which is parallel to the frame side wall, and the prefabricated box type frame is divided into a pipeline room and a drainage chamber.
The beneficial effect of adopting the further scheme is that: the strength is high, the stress performance is good, the bearing capacity is strong, the assembly difficulty can be reduced to a great extent, the construction period is shortened, the construction efficiency is improved, the load on the connecting piece and the bearing piece is reduced, the service life is ensured, and each functional area is divided; the pipeline house and the drainage chamber are respectively used for arranging pipelines and comprehensively draining water, so that comprehensive drainage of highways, subways and pipelines can be realized, the functions are integrated, the occupied space is small, the energy is saved, the environment is protected, and the cost is low.
Further, a first fixture block is arranged between one side of the evacuation channel and the cast-in-place plate structure of the first partition wall, and a second fixture block is arranged between the prefabricated platform and the underground four-layer plate; and rib holes are reserved at the joints of the first clamping block, the second clamping block and the bracket, and prestressed ribs are inserted in the rib holes.
The beneficial effect of adopting the further scheme is that: the first clamping block and the second clamping block are used for improving the strength, improving the stress and ensuring the service life; the prestressed tendons can promote the connection to form a whole, and further improve the bearing capacity.
Further, a steel groove is pre-embedded in the position, connected with the prefabricated air duct, of the underground three-layer plate, and the prefabricated air duct is provided with a steel joint matched with the steel groove; the bottom of the underground three-layer plate is also embedded with an I-shaped pipeline lifting hook.
The beneficial effect of adopting the further scheme is that: the post-mechanical assembly is facilitated, additional templates or scaffolds are not needed, the construction period can be greatly shortened, the assembly difficulty is reduced, the construction efficiency is improved, and the service life is ensured; the pipeline lifting hook is used for assisting pipeline arrangement; the steel groove, the steel joint and the pipeline lifting hook are designed according to the application scene, and the strength and the durability are guaranteed.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic cross-sectional view of a subway station structure built by co-construction of roads and railways according to the present invention;
FIG. 2 is an enlarged view of A of FIG. 1;
FIG. 3 is an enlarged view of B of FIG. 1;
FIG. 4 is an enlarged view of C of FIG. 1;
fig. 5 is a schematic structural view of a single-sided prefabricated box type frame in a subway station structure built by co-construction of roads and railways according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a shield segment; 2. concrete inner lining; 3. a top plate; 4. underground two-layer plate; 5. underground three-layer plates; 6. underground four-layer plates; 7. a highway pipeline layer; 8. a municipal highway layer; 81. evacuating the channel; 82. a first partition wall; 83. a second partition wall; 9. a subway station hall layer; 10. a subway station layer; 101. prefabricating a platform; 102. a subway rail; 103. a platform cast-in-place layer; 104. prefabricating an air duct; 105. a pipeline hanger; 11. prefabricating a box-type frame; 111. a frame upper plate; 112. an arc-shaped bottom plate; 113. a frame side wall; 114. an intermediate wall; 12. a bracket; 13. a cast-in-place plate structure; 14. embedding a steel bar connector; 15. a second fixture block; 16. prestressed tendons; 17. a steel groove; 18. a steel joint.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention. The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides an underground station structure built by roads and railways, which comprises a plurality of sections of cylindrical shield segments 1 spliced ring by ring, wherein a concrete lining 2 is arranged on the inner side of each shield segment 1, an underground station space is formed in the concrete lining 2, a top plate 3, an underground two-layer plate 4, an underground three-layer plate 5 and an underground four-layer plate 6 which are parallel to a horizontal plane are sequentially arranged in the concrete lining 2 from top to bottom, the underground station space is divided into a road pipeline layer 7, a municipal road layer 8, a subway station hall layer 9, a subway station layer 10 and a comprehensive bottom layer from top to bottom, and corbels 12 are respectively arranged at two ends of the bottom side of the top plate 3, the underground two-layer plate 4 and the underground three-layer plate 5 by the concrete lining 2; the municipal highway layer 8 comprises a highway positioned in the middle of the municipal highway layer and evacuation channels 81 positioned on two sides of the highway, a first partition wall 82 is arranged between the evacuation channels 81 and the highway, and a plurality of escape doors are arranged on the first partition wall 82; the subway station layer 10 comprises a prefabricated station 101 positioned in the middle of the subway station layer and subway rails 102 positioned on two sides of the subway station layer, a station cast-in-place layer 103 is arranged on the upper side of the prefabricated station 101, and prefabricated air channels 104 are arranged at the bottoms of the underground three-layer plates 5 above the subway rails 102; a prefabricated box type frame 11 is arranged in the comprehensive bottom layer.
Further, a rigid waterproof layer is arranged between the concrete lining 2 and the shield segment 1, the rigid waterproof layer and the concrete lining 2 form a composite structure.
Further, the top plate 3, the underground two-layer plate 4 and the underground three-layer plate 5 are all of prefabricated prestressed plate structures, and the underground four-layer plate 6 is of a cast-in-place structure.
Further, cast-in-place plate structures 13 are arranged on the upper sides of the underground two-layer plates 4 and the underground three-layer plates 5, and embedded steel bar connectors 14 are arranged at the contact positions of the cast-in-place plate structures 13 and the underground four-layer plates 6 and the concrete lining 2, so that the concrete lining 2, the cast-in-place plate structures 13 and the underground four-layer plates 6 are integrated.
Further, a second partition wall 83 is arranged between the evacuation channel 81 and the concrete lining 2, a first support is arranged between the second partition wall 83 and the concrete lining 2, and the first support is provided with municipal pipelines; and a second support is arranged on the inner side of the concrete lining 2 in the subway station platform layer 10, and a subway pipeline is erected on the second support.
Further, the prefabricated box type frame 11 comprises two independent parts which are bilaterally symmetrical, each part comprises a frame upper plate 111 which is parallel to the four underground plates 6, an arc-shaped bottom plate 112 which is matched with the arc-shaped inner wall of the concrete lining 2, a frame side wall 113 which connects the frame upper plate 111 and the arc-shaped bottom plate 112, and an intermediate wall 114 which is parallel to the frame side wall 113, and the prefabricated box type frame 11 is divided into a pipeline room and a drainage chamber.
Further, a first fixture block is arranged between one side of the evacuation channel 81 and the cast-in-place plate structure 13 of the first partition wall 82, and a second fixture block 15 is arranged between the prefabricated platform 101 and the underground four-layer plate 6; and rib holes are reserved at the respective joints of the first fixture block, the second fixture block 15 and the bracket 12, and prestressed ribs 16 are inserted in the rib holes.
Further, a steel groove 17 is pre-embedded in the position where the underground three-layer plate 5 is connected with the prefabricated air duct 104, and the prefabricated air duct 104 is provided with a steel joint 18 matched with the steel groove 17; the bottom of the underground three-layer plate 5 is also embedded with an I-shaped pipeline lifting hook 105.
The invention relates to a construction method for jointly building an underground station structure by highway and railway, which comprises the following steps: respectively constructing an originating well and a receiving well at two ends of a designed underground station structure; hoisting a shield from a starting well, splicing shield segments 1 ring by ring, arranging a secondary lining template trolley behind the shield, splicing and coating rigid waterproof materials on the inner sides of the shield segments 1 to form a concrete lining 2, reserving corbels 12, pre-burying a first support and a second support, and hoisting the concrete lining out of a receiving well; step three, constructing the prefabricated box type frame 11, the top plate 3, the underground two-layer plate 4 and the underground three-layer plate 5 by adopting a mechanical assembly method, wherein the underground two-layer plate 4, the underground three-layer plate 5 and the frame upper plate 111 form rough surfaces and reinforcement holes in the prefabricating process, binding prestressed reinforcements 16 during assembly, tensioning and anchoring to ensure firm connection and synchronously pouring to form a whole, and embedding a steel groove 17 and a pipeline lifting hook 105 in the prefabricating process of the underground three-layer plate 5; step four, constructing a cast-in-place plate structure 13 and an underground four-layer plate 6 respectively by taking the underground two-layer plate 4, the underground three-layer plate 5 and the prefabricated box type frame 11 as templates, reserving positions of a first clamping block and a second clamping block 15 for the cast-in-place plate structure 13 and the underground four-layer plate 6, binding prestressed tendons 16 during assembly, tensioning and anchoring, ensuring firm connection and synchronously pouring to form a whole; step five, assembling and constructing the prefabricated platform 101, the first partition wall 82 and the second partition wall 83, wherein the first partition wall 82 and the second partition wall 83 are prefabricated parts, and constructing a platform cast-in-place layer 103 by taking the prefabricated platform 101 as a template; erecting a highway pipeline, a municipal pipeline and a subway pipeline; and seventhly, finishing construction by combining the auxiliary structures of the starting well and the receiving well.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; the present invention may be readily implemented by those of ordinary skill in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. A subway station structure built jointly by highway and railway is characterized by comprising a plurality of sections of cylindrical shield segments spliced ring by ring, wherein concrete linings are arranged on the inner sides of the shield segments, an underground station space is formed in the concrete linings, a top plate, an underground two-layer plate, an underground three-layer plate and an underground four-layer plate which are parallel to a horizontal plane are sequentially arranged in the concrete linings from top to bottom, the underground station space is divided into a highway pipeline layer, a municipal highway layer, a subway station hall layer, a subway station platform layer and a comprehensive bottom layer from top to bottom, and brackets are arranged at two ends of the bottom sides of the top plate, the underground two-layer plate and the underground three-layer plate by the concrete linings; the urban highway layer comprises a highway positioned in the middle of the urban highway layer and evacuation channels positioned on two sides of the highway, a first partition wall is arranged between each evacuation channel and the highway, and the first partition wall is provided with a plurality of escape doors; the subway station platform layer comprises a prefabricated station platform positioned in the middle of the subway station platform layer and subway rails positioned on two sides of the subway station platform, a platform cast-in-place layer is arranged on the upper side of the prefabricated station platform, and prefabricated air channels are arranged at the bottom of the underground three-layer plate above the subway rails; and a prefabricated box type frame is arranged in the comprehensive bottom layer.
2. The subway station structure of claim 1, wherein a rigid waterproof layer is arranged between said concrete lining and said shield segments, rigid waterproof layer and concrete lining form a composite structure.
3. The subway station structure of claim 2, wherein said top plate, underground two-layer plate and underground three-layer plate are all prefabricated prestressed plate structures, and said underground four-layer plate is a cast-in-place structure.
4. The subway station structure of claim 3, wherein said two and three underground slabs are provided with cast-in-place slab structures at their upper sides, said cast-in-place slab structures and four underground slabs are provided with embedded steel connectors at their contact with the concrete lining, so that the concrete lining is integrated with the cast-in-place slab structures and four underground slabs.
5. The subway station structure according to claim 4, wherein a second partition wall is provided between said evacuation passageway and said concrete lining, a first support is provided between said second partition wall and said concrete lining, said first support being provided with municipal pipelines; and a second support is arranged on the inner side of the concrete lining in the subway station platform layer, and a subway pipeline is erected on the second support.
6. The subway station structure of claim 5, wherein said prefabricated box frame comprises two independent parts which are bilaterally symmetrical, each part comprises a frame upper plate parallel to four underground plates, an arc-shaped bottom plate matched with the arc-shaped inner wall of the concrete lining, frame side walls connecting the frame upper plate and the arc-shaped bottom plate, and a middle partition wall parallel to the frame side walls, and the prefabricated box frame is divided into a pipeline room and a drainage room.
7. The subway station structure of claim 6, wherein a first block is arranged between one side of the evacuation channel and the cast-in-place plate structure of the first partition wall, and a second block is arranged between the prefabricated platform and the underground four-layer plate; and rib holes are reserved at the joints of the first clamping block, the second clamping block and the bracket, and prestressed ribs are inserted in the rib holes.
8. The subway station structure of claim 7, wherein steel grooves are embedded in the three underground plates at the positions where prefabricated air ducts are connected, and the prefabricated air ducts are provided with steel joints matched with the steel grooves; the bottom of the underground three-layer plate is also embedded with an I-shaped pipeline lifting hook.
9. A construction method for jointly building an underground station structure by roads and railways is characterized by comprising the following steps: respectively constructing an originating well and a receiving well at two ends of a designed underground station structure; hoisting a shield from a starting well, splicing shield segments ring by ring, arranging a secondary lining template trolley behind the shield, splicing and smearing rigid waterproof materials on the inner sides of the shield segments to form a concrete lining, reserving corbels, pre-burying a first support and a second support, and then hoisting the shield to a receiving well; step three, constructing a prefabricated box type frame, a top plate, an underground two-layer plate and an underground three-layer plate by adopting a mechanical assembly method, wherein the underground two-layer plate, the underground three-layer plate and an upper plate of the frame form a rough surface and a rib hole in the prefabrication process, binding prestressed ribs during assembly, tensioning and anchoring to ensure firm connection and synchronously pouring to form a whole, and embedding a steel groove and a pipeline lifting hook in the prefabrication process of the underground three-layer plate; step four, constructing a cast-in-place plate structure and an underground four-layer plate respectively by taking an underground two-layer plate, an underground three-layer plate and a prefabricated box type frame as templates, reserving clamping block positions for the cast-in-place plate structure and the underground four-layer plate, binding prestressed tendons during clamping block assembly, tensioning and anchoring, ensuring firm connection and synchronously pouring to form a whole; step five, assembling and constructing a prefabricated platform, a first partition wall and a second partition wall, wherein the first partition wall and the second partition wall are also prefabricated parts, and constructing a platform cast-in-place layer by taking the prefabricated platform as a template; erecting a highway pipeline, a municipal pipeline and a subway pipeline;
and seventhly, finishing construction by combining the auxiliary structures of the starting well and the receiving well.
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