A vibration isolation and reduction subway station structure applicable to water-poor rock strata and its construction method

Abstract

The present invention discloses a vibration isolation and reduction subway station structure applicable to water-poor rock strata and a construction method thereof. The vibration isolation and reduction subway station structure includes a groundwater treatment member, a station body structure, and a vibration reduction member. The groundwater treatment member is located on the rock strata below the station body structure and the vibration reduction member. The station body structure is located in the underground soil layer and the rock strata, its bottom is connected to the groundwater treatment member, and its top is connected to the upper cover structure. The vibration reduction member is located at the lower part of the station body structure, its bottom is connected to the groundwater treatment member, its side is connected to the station body structure, and its top is connected to the track. This kind of subway station structure is particularly applicable to the situation where the structure has strict requirements for train vibration under the conditions of water-poor rock strata, and has the characteristics of remarkable vibration reduction effect, safe and reliable structure, simple implementation, and economic savings. During the development of urban underground space, especially during the upper cover development in combination with the subway, it has remarkable social and economic benefits and broad application prospects.

Description

Technical Field

[0001] The present invention relates to underground structure engineering, and particularly relates to a vibration isolation and reduction subway station structure under water-poor rock stratum conditions and a construction method thereof. Background Art

[0002] The vibration during the operation of urban subways has a great impact on the surrounding environment. Although the vibration during subway operation generally does not pose a safety threat to the surrounding buildings, it seriously affects their comfort, especially for civilian residences, where the comfort impact is particularly severe. Due to the existence of subway operation vibration, there are great restrictions on the development and construction of ground buildings within the range affected by subway train vibration, especially directly above the subway line, which has a great impact on the development and utilization of urban plots and the selection of subway lines.

[0003] Regarding the treatment of subway operation vibration, the currently common solutions are divided into two types: The first is to delimit the scope affected by operation vibration and not build vibration-sensitive buildings within this range; the second is to add vibration reduction measures to the subway track bed or add vibration reduction measures within the building to mitigate the impact of subway operation vibration on the comfort of the building. The first approach has a huge impact on subway line selection and the development of surrounding plots, has no promotion value, and does not meet the requirements of sustainable development. The second approach is currently the most widely used. Usually, a vibration reduction track bed is added in the subway station, and vibration reduction pads or vibration reduction bearings are installed in the affected buildings to reduce the impact of subway vibration on building comfort. This approach has been widely used in the development projects of the upper covers of subway depots. Most of the successful development projects of the upper covers of subway depots are mainly commercial buildings, and relatively few are residential development projects. Since the train running speed in the subway depot is slow and the structural form of the upper cover project is mostly pile foundation, the impact of subway operation vibration on the upper cover project is limited during subway operation, and measures such as track vibration reduction and vibration reduction pads can basically meet the comfort requirements of the upper cover building.

[0004] The area above the main line of the subway is greatly affected by train operation. Currently, methods such as subway bypassing, track vibration reduction, and adding vibration isolation and reduction measures to new projects are mostly adopted to reduce the impact of train vibration and improve comfort. In current subway construction projects, under different geological conditions, the structural form of subway underground stations is relatively fixed, and a fully enclosed waterproof structure form is usually adopted. Under the fixed structural form of subway stations, the vibration reduction effect that can be achieved by measures such as vibration reduction tracks and vibration reduction pads is very limited, it is difficult to meet the comfort requirements of residential projects, and the cost is relatively high. For different geological conditions, especially underground stations in water-poor strata or rock formations, adopting traditional structural forms is relatively conservative and is not conducive to vibration isolation and reduction of the overlying buildings. Currently, there is little research on the impact of train vibration on the comfort of overlying buildings from the perspective of underground structures. Therefore, for underground stations with conditions, such as underground stations in water-poor rock formations, researching and developing a new structural form that can not only ensure structural safety, facilitate groundwater treatment, but also support the vibration isolation requirements of overlying residences has important practical value and practical significance. Summary of the Invention

[0005] In order to solve the comfort problem of the overlying residence of the subway station, the present invention provides a vibration isolation and reduction subway station structure that is reasonable in structure, easy to construct, economically reliable, and applicable to water-poor rock formation conditions.

[0006] The realization of the object of the present invention is completed by the following technical solutions:

[0007] A vibration isolation and reduction subway station structure applicable to water-poor rock formations, comprising a groundwater treatment component, a station body structure, and a vibration reduction component; the groundwater treatment component is located on the rock formation below the station body structure and the vibration reduction component; the station body structure is located in the underground soil layer and rock formation, the station body structure does not have a continuous whole bottom plate, its bottom is connected to the groundwater treatment component, and its top is connected to the overlying structure; the vibration reduction component is located at the lower part of the station body structure, its bottom is connected to the groundwater treatment component, its side is connected to the station body structure, and its top is connected to the track.

[0008] Furthermore, the station structure is a cast-in-place reinforced concrete structure, and its component members are components that ensure the safety and functionality of the subway. On the premise of meeting the internal use space, the component sizes are determined through analysis based on the actual size of the station and the load of the superstructure, including the wing-shaped bottom slab, station foundation, station enclosure structure, platform, track-top air duct, station columns, station middle beams, station middle slabs, station top beams, station top slabs, and station side walls; the upper part of the station foundation in the middle is connected to the top of the wing-shaped bottom slab and the top of the wing-shaped bottom slab is connected to the station columns, the top of the station foundation on both sides is connected to the station side walls, the outside of the station side walls is connected to the station enclosure structure, and the top is connected to the upper cover structure, the top of the wing-shaped bottom slab is connected to the platform, the top of the station columns on the platform layer is connected to the station middle beams, the upper part of the station middle beams is connected to the station middle slabs and the top is connected to the station columns on the upper layer, the station middle slabs are connected to the station side walls, the lower part of the station middle slabs is connected to the track-top air duct, the upper part of the station columns on the upper layer is connected to the station top slabs and the top is connected to the upper cover structure, and the station top slabs are connected to the station side walls.

[0009] Furthermore, the vibration damping member includes a vibration damping bottom slab, a vibration damping roadbed, and a vibration damping layer. Between the vibration damping bottom slab and the underlying rock stratum is the waterproof layer of the groundwater treatment member. The top of the vibration damping bottom slab is connected to the vibration damping roadbed, the top of the vibration damping roadbed is connected to the track, and the vibration damping layer is filled at the gaps between the sides of the vibration damping bottom slab and the vibration damping roadbed and the station foundation on both sides, and the vibration damping layer is filled at the gap between the vibration damping bottom slab and the wing-shaped bottom slab. The vibration damping member is used to reduce the vibration when the train passes and change the propagation path of the train vibration, transmitting the vibration to the underlying rock stratum, while the prior art is to transmit the train vibration to the bottom slab of the station structure.

[0010] Furthermore, the vibration damping bottom slab is a cast-in-place reinforced concrete slab with a thickness of not less than 500 mm, directly bearing the loads of the train, track, and vibration damping roadbed.

[0011] Furthermore, the vibration damping layer is a rubber vibration damping pad, weakening the lateral propagation of the train vibration; the vibration damping roadbed is used to slow down the vertical propagation of the train vibration.

[0012] Furthermore, the groundwater treatment member includes a waterproof layer, a drainage blind pipe, a blind pipe protective layer, a filter body, and a sump. The waterproof layer is located at the bottom of the station structure and the vibration damping member. The drainage blind pipe is provided below the waterproof layer, and the blind pipe protective layer and the filter body are successively arranged outside the drainage blind pipe from the inside to the outside. The sump is located below the station structure and communicates with the drainage blind pipe.

[0013] Furthermore, the waterproof layer uses waterproof rolls to form a full-wrap waterproof layer to prevent groundwater from seeping into the station interior along the structural joints.

[0014] Further, the drainage blind pipe is made of seamless steel pipe with a diameter of 150 mm to 250 mm; blind pipe water inlet holes are arranged on the drainage blind pipe every 1 m to 2 m, and the blind pipe water inlet holes are arranged in a plum blossom pattern with a hole diameter of 10 to 15 mm; the blind pipe protective layer is made of permeable plastic foam and non-woven fabric materials to protect the drainage blind pipe; the filter water body is made of uniform round gravel with a diameter of 20 to 30 mm, which is laid around the drainage blind pipe to play the role of filtering water and protecting the drainage blind pipe.

[0015] Further, the sump is of cast-in-place reinforced concrete structure and is arranged at both ends of the entrance and exit below the station structure to collect the groundwater discharged by the drainage blind pipe.

[0016] A construction method for a vibration reduction and isolation subway station structure applicable to water-poor rock strata includes the following construction steps: the first step is the construction of groundwater treatment components; the second step is the construction of the station structure; the third step is the construction of vibration reduction components.

[0017] The construction of the groundwater treatment components: after the foundation pit is excavated to the design elevation, the sump, drainage blind pipe, blind pipe protective layer and filter water body are implemented in sequence, and finally the waterproof layer is implemented.

[0018] The construction of the station structure: after the construction of the groundwater treatment components is completed, the waterproof structure around the station structure is implemented, and then the station structure is cast.

[0019] The construction of the vibration reduction components: after the construction of the station structure is completed, the vibration reduction layer is installed, the vibration reduction bottom slab is cast, and the vibration reduction track bed is constructed in sequence.

[0020] Through orderly construction, a complete subway station structure system is completed, realizing a vibration reduction and isolation subway station structure applicable to water-poor rock strata, which can reduce the vibration when the train passes and change the propagation path of the train vibration, and reduce the impact of the train vibration on the subway station and the overlying development project.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) By treating groundwater through the groundwater drainage method in water-poor rock strata, the anti-floating problem during the construction and use stages of the station is solved.

[0023] (2) By setting up a combination of measures such as a vibration reduction bottom slab, a vibration reduction layer and a vibration reduction track bed, the propagation path of the train vibration is changed, and the impact of the train vibration on the subway station and the overlying development project is reduced.

[0024] (3) The loads of the subway station and the overlying development project are transmitted downward through the side walls and middle columns to the station foundation, and then transmitted to the natural rock foundation, making full use of the advantage of the large bearing capacity of the rock stratum to ensure the structural safety of the subway and the overlying development project.

[0025] (4) During specific implementation, the construction steps are clear, the construction process is simple, the vibration reduction effect is obvious, and it has significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a sectional view of the vibration isolation and reduction subway station structure;

[0028] Figure 2 It is a sectional view of the vibration reduction component and the groundwater treatment component;

[0029] Figure 3 It is a plan view of the groundwater treatment component;

[0030] Figure 4 It is a detailed structure drawing of the drainage blind pipe;

[0031] Figure 5 It is a sectional view at the drainage blind pipe;

[0032] Figure 6 It is an interface drawing of the vibration reduction bottom plate and the wing-shaped bottom plate;

[0033] Figure 7 It is an interface drawing of the vibration reduction bottom plate and the station foundation.

[0034] Explanation of the reference numerals in the drawings: 1. Wing-shaped bottom plate; 2. Vibration reduction bottom plate; 3. Drainage blind pipe; 4. Station foundation; 5. Station enclosure structure; 6. Platform; 7. Track top air duct; 8. Station column; 9. Station middle beam; 10. Station middle plate; 11. Station top beam; 12. Station roof plate; 13. Station side wall; 14. Upper cover structure; 15. Soil-rock interface; 16. Vibration reduction layer; 17. Vibration reduction track bed; 18. Waterproof layer; 19. Sump; 20. Blind pipe water inlet hole; 21. Blind pipe protective layer; 22. Filter body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further elaborates on the present invention in conjunction with embodiments. The following embodiments are explanations of the present invention, and the present invention is not limited to the following embodiments.

[0036] Embodiment 1

[0037] As Figure 1As shown in the figure, this embodiment relates to a vibration isolation subway station structure applicable to water - poor rock strata. Compared with the traditional station structure, this structure can change the propagation path of train vibration and reduce the impact of vibration on the subway station and the superstructure. This structure is used in water - poor rock strata. The groundwater below the station is drained by a drainage method, and a fully - enclosed waterproof layer is set to prevent groundwater from entering the platform layer.

[0038] As Figure 1 and Figure 2 shown, the station body structure is connected to the superstructure 14, but the vibration of the subway train does not directly act on the station body structure. During train operation, the vibration is transmitted from the track, the vibration - damping roadbed 17 and the vibration - damping bottom plate 2 to the rock foundation. The impact of vibration on the structure is reduced by means of structural separation and multiple vibration - damping methods, and the comfort of the superstructure 14 is increased.

[0039] The structure of the station will be described in detail below:

[0040] As Figure 1 shown, a vibration isolation subway station structure applicable to water - poor rock strata includes a groundwater treatment component, a station body structure and a vibration - damping component; the groundwater treatment component is located on the rock stratum below the station body structure and the vibration - damping component; the station body structure is located in the underground soil layer and the rock stratum. The station body structure does not have a whole - piece continuous bottom plate. Its bottom is connected to the groundwater treatment component, and its top is connected to the superstructure 14; the vibration - damping component is located at the lower part of the station body structure. Its bottom is connected to the groundwater treatment component, its side is connected to the station body structure, and its top is connected to the track.

[0041] Further, as Figure 1As shown, the structure of the station body is a cast-in-place reinforced concrete structure, and its component members are those that ensure the safety and functionality of the subway. On the premise of meeting the internal use space, the dimensions of the component members are determined through analysis according to the actual size of the station and the load of the superstructure, including the wing-shaped bottom slab 1, the station foundation 4, the station retaining structure 5, the platform 6, the track-top air duct 7, the station columns 8, the station middle beams 9, the station middle slabs 10, the station top beams 11, the station top slab 12, and the station side walls 13; the upper part of the middle station foundation 4 is connected to the top of the wing-shaped bottom slab 1 which is connected to the station columns 8, the tops of the station foundations 4 on both sides are connected to the station side walls 13, the outside of the station side walls 13 is connected to the station retaining structure 5, and the top is connected to the upper cover structure 14. The top of the wing-shaped bottom slab 1 is connected to the platform 6. The tops of the station columns 8 on the platform layer are connected to the station middle beams 9. The upper part of the station middle beams 9 is connected to the station middle slabs 10 and the top is connected to the station columns 8 on the upper layer. The station middle slabs 10 are connected to the station side walls 13. The lower part of the station middle slabs 10 is connected to the track-top air duct 7. The upper parts of the station columns 8 on the upper layer are connected to the station top slab 12 and the top is connected to the upper cover structure 14. The station top slab 12 is connected to the station side walls 13.

[0042] Further, as Figure 2 , Figure 6 and Figure 7 shown, the vibration damping member includes a vibration damping bottom slab 2, a vibration damping roadbed 17, and a vibration damping layer 16. Between the vibration damping bottom slab 2 and the underlying rock formation is the waterproof layer 18 of the groundwater treatment member. The top of the vibration damping bottom slab 2 is connected to the vibration damping roadbed 17. The top of the vibration damping roadbed 17 is connected to the track. The gaps between the sides of the vibration damping bottom slab 2 and the vibration damping roadbed 17 and the station foundations 4 on both sides are filled with the vibration damping layer 16. The gap between the vibration damping bottom slab 2 and the wing-shaped bottom slab 1 is filled with the vibration damping layer 16. The vibration damping member is used to reduce the vibration when the train passes and change the propagation path of the train vibration, transmitting the vibration to the underlying rock formation, while the prior art directly transmits the train vibration to the bottom slab of the station structure.

[0043] Further, the vibration damping bottom slab 2 is a cast-in-place reinforced concrete slab with a thickness of not less than 500 mm, directly bearing the loads of the train, the track, and the vibration damping roadbed 17.

[0044] Further, the vibration damping layer 16 is a rubber vibration damping pad, weakening the lateral propagation of the train vibration; the vibration damping roadbed 17 is used to slow down the vertical propagation of the train vibration.

[0045] Further, as Figure 3 and Figure 5As shown in the figure, the groundwater treatment component includes a waterproof layer 18, a drainage blind pipe 3, a blind pipe protective layer 21, a filter water body 22, and a sump 19. The waterproof layer 18 is located at the bottom of the station structure and the vibration reduction component. A drainage blind pipe 3 is provided below the waterproof layer 18. The drainage blind pipe 3 is arranged longitudinally along the subway station. The outside of the drainage blind pipe 3 is successively provided with a blind pipe protective layer 21 and a filter water body 22 from the inside to the outside. The sump 19 is located below the station structure and communicates with the drainage blind pipe 3. The combination of various components achieves the function of discharging groundwater and reducing the groundwater pressure, preventing the influence of excessive water pressure on the stability of the vibration reduction floor slab 2.

[0046] Furthermore, the waterproof layer 18 uses waterproof coiled materials to form a fully enclosed waterproof layer, preventing groundwater from seeping into the station interior along the structural joint and affecting the air humidity inside the station and the comfort inside the station.

[0047] Furthermore, as Figure 4 and Figure 5 shown in the figure, the drainage blind pipe 3 uses seamless steel pipes with a diameter of 150 mm to 250 mm; blind pipe water inlet holes 20 are arranged on the drainage blind pipe 3 every 1 m to 2 m, and the blind pipe water inlet holes 20 are arranged in a plum blossom shape with a hole diameter of 10 to 15 mm; the blind pipe protective layer 21 uses permeable plastic foam and non-woven fabric materials to protect the drainage blind pipe 3, and the drainage blind pipe 3 is wrapped on site during construction; the filter water body 22 uses uniform round gravel with a diameter of 20 to 30 mm, which is laid around the drainage blind pipe 3 to play the role of filtering water and protecting the drainage blind pipe 3.

[0048] Furthermore, as Figure 3 shown in the figure, the sump 19 uses a cast-in-place reinforced concrete structure, which is arranged at both ends of the entrance and exit below the station structure to collect the groundwater discharged by the drainage blind pipe 3, and then discharges it outside the station through the in-station drainage equipment.

[0049] Embodiment 2

[0050] A construction method for a vibration reduction and isolation subway station structure applicable to water-poor rock strata includes the following construction steps: the first step is the construction of the groundwater treatment component; the second step is the construction of the station structure; the third step is the construction of the vibration reduction component;

[0051] The construction of the groundwater treatment component: After the foundation pit is excavated to the design elevation, the sump 19, the drainage blind pipe 3, the blind pipe protective layer 21, and the filter water body 22 are successively implemented, and finally the waterproof layer 18 is implemented. When burying the drainage blind pipe 3, it is necessary to first excavate the foundation trench, then wrap the drainage blind pipe 3 with the blind pipe protective layer 21 on site, lay the drainage blind pipe 3 and connect it to the sump 19, and then fill the foundation trench with filter water materials such as round gravel to form the filter water body 22; the waterproof layer 18 is an asphalt-based waterproof coiled material, and the coiled material is continuously laid.

[0052] Construction of the station body structure: After the construction of the groundwater treatment components is completed, implement the waterproof structure around the station body structure, and then pour the station body structure.

[0053] Construction of the vibration damping components: After the construction of the station body structure is completed, sequentially install the vibration damping layer 16, pour the vibration damping bottom plate 2, and construct the vibration damping roadbed 17; the construction of the vibration damping roadbed 17 needs to be carried out after the vibration damping bottom plate 2 reaches the designed strength.

[0054] Through orderly construction, a complete subway station structure system is completed, realizing a vibration isolation and reduction subway station structure applicable to water-poor rock strata, which can reduce the vibration when the train passes and change the propagation path of the train vibration, meeting the requirements of structural safety and reducing the impact of train vibration on the subway station and the overlying development project.

[0055] In addition, it should be noted that for the specific embodiments described in this specification, the shapes and names of their components can be different. Any equivalent or simple changes made according to the structure, features, and principles described in the inventive concept of this patent are included in the protection scope of this invention. Those skilled in the technical field to which this invention pertains can make various modifications, supplements, or use similar methods to replace the specific embodiments described, as long as they do not deviate from the structure of this invention or exceed the scope defined by this claims, they should fall within the protection scope of this invention.

Claims

1. A vibration isolation and reduction subway station structure applicable to water - poor rock strata, characterized in that, It includes a groundwater treatment component, a station structure, and a vibration damping component; the groundwater treatment component is located on the rock stratum below the station structure and the vibration damping component; the station structure is located in the underground soil layer and the rock stratum, its bottom is connected to the groundwater treatment component, and its top is connected to the upper cover structure (14); the vibration damping component includes a vibration damping bottom plate (2), a vibration damping roadbed (17), and a vibration damping layer (16). The vibration damping component is located at the lower part of the station structure, and its bottom is connected to the groundwater treatment component; one side of the vibration damping bottom plate (2) and the vibration damping roadbed (17) is connected to the station foundations (4) on both sides, and the other side is connected to the wing-shaped bottom plate (1). The connection gap is filled with the vibration damping layer (16), and the top of the vibration damping component is connected to the track; the station foundations (4) include an intermediate station foundation and the station foundations on both sides. The intermediate station foundation is arranged below the station columns (8), and the station foundations on both sides are arranged below the station side walls (13). The upper part of the intermediate station foundation (4) is connected to the wing-shaped bottom plate (1).

2. The vibration isolation and reduction subway station structure applicable to water-poor rock strata according to claim 1, characterized in that, The station structure is a cast-in-place reinforced concrete structure, including a wing-shaped bottom plate (1), station foundations (4), a station enclosure structure (5), a platform (6), a track top air duct (7), station columns (8), a station middle beam (9), a station middle slab (10), a station top beam (11), a station roof slab (12), and a station side wall (13); the top of the intermediate station foundation (4) is connected to the station columns (8), the tops of the station foundations (4) on both sides are connected to the station side walls (13), the outside of the station side wall (13) is connected to the station enclosure structure (5), and the top is connected to the upper cover structure (14). The top of the wing-shaped bottom plate (1) is connected to the platform (6), the tops of the station columns (8) on the platform layer are connected to the station middle beam (9), the upper part of the station middle beam (9) is connected to the station middle slab (10) and the top is connected to the station columns (8) on the upper layer. The station middle slab (10) is connected to the station side wall (13), the lower part of the station middle slab (10) is connected to the track top air duct (7), the upper parts of the station columns (8) on the upper layer are connected to the station roof slab (12) and the top is connected to the upper cover structure (14), and the station roof slab (12) is connected to the station side wall (13).

3. The vibration isolation and reduction subway station structure applicable to water-poor rock strata according to claim 1, characterized in that Between the vibration damping bottom plate (2) and the underlying rock stratum is the waterproof layer (18) of the groundwater treatment component. The top of the vibration damping bottom plate (2) is connected to the vibration damping roadbed (17), and the top of the vibration damping roadbed (17) is connected to the track.

4. A vibration isolation and reduction subway station structure applicable to water-scarce rock strata according to claim 3, characterized in that, The vibration damping bottom plate (2) is a cast-in-place reinforced concrete plate with a thickness of not less than 500 mm.

5. The vibration isolation and reduction subway station structure applicable to water-poor rock strata according to claim 3, characterized in that, The vibration damping layer (16) is a rubber vibration damping pad.

6. The vibration isolation and reduction subway station structure applicable to water-poor rock strata according to claim 1, characterized in that The groundwater treatment component includes a waterproof layer (18), a drainage blind pipe (3), a blind pipe protective layer (21), a filter water body (22) and a sump (19). The waterproof layer (18) is located at the bottom of the station structure and the vibration damping component. A drainage blind pipe (3) is provided below the waterproof layer (18). The blind pipe protective layer (21) and the filter water body (22) are sequentially arranged outside the drainage blind pipe (3) from inside to outside. The sump (19) is located below the station structure and communicates with the drainage blind pipe (3).

7. The vibration isolation and reduction subway station structure applicable to water-poor rock strata according to claim 6, characterized in that The waterproof layer (18) uses waterproof coiled material to form a full - package waterproof layer.

8. A vibration isolation and reduction subway station structure applicable to water-poor rock strata according to claim 6, characterized in that, The drainage blind pipe (3) uses seamless steel pipe with a diameter of 150 mm - 250 mm. Blind pipe water inlet holes (20) are arranged on the drainage blind pipe (3) every 1 m - 2 m. The blind pipe water inlet holes (20) are arranged in a plum blossom pattern with a hole diameter of 10 - 15 mm. The blind pipe protective layer (21) uses permeable plastic foam and non - woven fabric materials. The filter water body (22) uses uniform round gravel with a diameter of 20 - 30 mm and is laid around the drainage blind pipe (3).

9. The vibration isolation and reduction subway station structure applicable to water-poor rock stratum according to claim 6, characterized in that, The sump (19) uses cast - in - place reinforced concrete structure.

10. A construction method for a vibration isolation subway station structure applicable to water - poor rock formations as claimed in claim 6, characterized in that, It includes the following construction steps: The first step is the construction of the groundwater treatment component; the second step is the construction of the station structure; the third step is the construction of the vibration damping component. The construction of the groundwater treatment component: After the foundation pit is excavated to the design elevation, the sump (19), the drainage blind pipe (3), the blind pipe protective layer (21) and the filter water body (22) are implemented in sequence, and finally the waterproof layer (18) is implemented. The construction of the station structure: After the construction of the groundwater treatment component is completed, the waterproof structure around the station structure is implemented, and then the station structure is poured. The construction of the vibration damping component: After the construction of the station structure is completed, the vibration damping layer (16) is installed, the vibration damping bottom plate (2) is poured, and the vibration damping track bed (17) is constructed in sequence.

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