Anti-floating system and method for separating subway station and property development basement floor

Abstract

The invention discloses an anti-floating system for separating a subway station from a property development basement floor, comprising: a subway station anti-floating system, a property development basement floor and anchor cables, wherein the subway station anti-floating system comprises: a station slab wall structure, comprising a station floor, a station side wall, a station middle plate and a station top plate, wherein station structure piles are arranged between the station floor, the station middle plate and the station top plate; the station top plate and the station structure column are connected to the property development basement floor through anchor cables; and a protective structure is arranged outside the station slab wall structure, wherein the top surface is flush with the top surface of the station top plate, and backfill concrete is arranged between the station side wall. The invention can achieve the purpose that the subway station and the upper property basement can be constructed in stages without affecting each other.

Description

Technical Field

[0001] The present invention relates to the technical field of underground engineering design and construction, and in particular to an anti-floating system and method for separating a subway station from a basement floor of a property development. Background Art

[0002] With the development of urban rail transit, rail transit, a convenient means of transportation, has become more and more popular among people. Rail transit has become an important way to lead urban development and increase the value of surrounding land. The combination of subway stations and superstructure property development can not only improve the utilization rate of land, but also give full play to the large passenger flow and convenience of rail transit, and improve the development value of superstructure property.

[0003] The problem with combining subway stations with upper-cover property development is that the property development basement and subway station structures overlap, and the property development basement does not have anti-floating anchors or pull-out piles under the bottom plate to solve the problem that the structure's own weight cannot meet the anti-floating requirements. Existing technologies solve this problem by usually building the subway station top plate and the property development basement bottom plate together, and the subway station and its anti-floating system as part of the upper property development basement to participate in anti-floating. This solution requires the subway station and the upper property development to be built and constructed at the same time, and the construction planning, design and construction of the subway station and the upper-cover property must be synchronized. Otherwise, the entire anti-floating system will not be able to function and there will be a risk of structural damage. The subway station and the upper property development have obvious mutual constraints, and there are many uncontrollable factors in construction. Summary of the invention

[0004] The purpose of the present invention is to provide an anti-floating system and method for separating a subway station from a basement floor of a property development, so that the subway station and the basement of the property above can be constructed in stages without affecting each other.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the anti-floating system and method for separating the subway station from the basement floor of property development of the present invention is as follows:

[0006] The invention discloses an anti-floating system for separating a subway station from a basement floor of a property development, comprising: an anti-floating system for the subway station, a basement floor of the property development and anchor cables, wherein the anti-floating system for the subway station comprises: a station slab wall structure, comprising a station floor, a station side wall, a station middle plate and a station top plate, wherein station structure piles are arranged between the station floor, the station middle plate and the station top plate; the station top plate and the station structure columns are connected to the basement floor of the property development through anchor cables; and a retaining structure is arranged outside the station slab wall structure, wherein the top surface is flush with the top surface of the station top plate and backfill concrete is arranged between the station side walls.

[0007] An anti-floating method for separating a subway station from a basement floor of a property development comprises the following steps:

[0008] Step 1: construct the anti-pulling piles below the station floor, and the piles above the station floor elevation are empty and filled with coarse sand;

[0009] Step 2: construct the enclosure structure;

[0010] Step 3: construct the station floor and anti-floating toe, remove the concrete of the anti-pullout piles intruding into the station floor, and anchor the longitudinal reinforcement of the anti-pullout piles into the station floor;

[0011] Step 4: implant the steel bars of the bottom beam into the enclosure structure and pour the bottom beam concrete;

[0012] Step 5: construct the station side walls, station middle plate, station structural columns and station roof from bottom to top;

[0013] Step 6: construct a waterproof layer, a waterproof protective layer, and a coarse sand backfill layer on the station roof in order from bottom to top;

[0014] Step seven, build the property development basement floor, straighten the anchor cable and anchor it into the basement floor.

[0015] The advantages of the anti-floating system and method for separating a subway station from a basement floor of a property development of the present invention are:

[0016] 1) The subway station has an independent anti-floating system, which is not affected by the upper property development structure. The subway station and the basement of the upper property can be constructed in phases without affecting each other. The subway station and the basement of the upper property are separated in structure, and the two can be constructed in phases. The construction of the subway station is not affected by the property development and construction planning and construction sequence, which can expand the application space of the combination of subway stations and property development;

[0017] 2) The anti-floating system can meet the anti-floating requirements of the subway station and the anti-floating requirements of the basement of the property development, thus achieving the goal of preventing the subway station from being affected by the upper property development and construction, and expanding the application space of the combination of the subway station and the upper property development;

[0018] 3) The basement of the property development is connected to the structural columns and top plate of the subway station through anchor cables. As part of the anti-floating system of the basement of the property development, the subway station can solve the anti-floating problem of the basement of the property development. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the anti-floating system of the present invention;

[0020] Figure 2 It is a partial schematic diagram of the anti-floating system of the present invention.

[0021] In the figure: 1. Enclosure structure; 2. Pull-out piles; 3. Bottom beam; 4. Station floor; 5. Station side walls; 6. Station middle plate; 7. Station roof; 8. Station structural columns; 9. Anchor cables; 10. Backfill concrete; 11. Waterproof layer; 12. Waterproof protective layer; 13. Coarse sand backfill layer; 14. Property development basement floor; 15. Longitudinal reinforcement. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the anti-floating system and method for separating a subway station from a basement floor of a property development of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1 to Figure 2 As shown, it shows an anti-floating system and method for separating a subway station from a property development basement floor of the present invention, including an anti-floating system for a subway station, a property development basement floor 14, and an anchor cable 9 connecting the subway station and the property development basement floor.

[0024] Furthermore, the anti-floating system of the subway station includes a retaining structure 1, anti-pulling piles 2, a bottom pressure beam 3, a station slab wall structure (station bottom plate 4, station side wall 5, station middle plate 6, station top plate 7), a station structural column 8, and backfill concrete 10. Among them, a station structural column 8 is arranged between the station bottom plate 4, the station middle plate 6, and the station top plate 7; the station top plate 7 and the station structural column 8 are connected to the property development basement bottom plate 14 through an anchor cable 9 to realize the connection between the subway station and the property development basement bottom plate.

[0025] Furthermore, the enclosure structure 1 is arranged outside the station slab wall structure, and the top surface is flush with the top surface of the station roof 7. In addition, the spacing distance between the enclosure structure 1 and the station side wall 5 is 0.8m~1.2m (preferably 1m), and backfill concrete 10 is arranged between the enclosure structure 1 and the station side wall 5.

[0026] Furthermore, a plurality of pull-out piles 2 are evenly arranged at the bottom of the station floor 4 , and the longitudinal reinforcements of the pull-out piles 2 are anchored into the station floor 4 and form a whole with the station floor 4 .

[0027] Furthermore, the externally protruding portion of the station floor 4 is an anti-floating toe, and the anti-floating toe is the station floor 4 protruding outward by 0.8 to 1.2 m (preferably 1 m), and the anti-floating toe is in close contact with the enclosure structure 1 .

[0028] Furthermore, a bottom beam 3 is provided on the anti-floating toe of the station floor 4, and the bottom beam 3 is connected to the enclosure structure 1 as a whole through connecting steel bars, and the connecting steel bars are connected by embedded bars or pre-buried connectors in the enclosure structure.

[0029] Furthermore, the station roof 7 and the property development basement floor 14 are connected together by anchor cables 9, the lower part of the anchor cables 9 is anchored into the station roof 7 and the station structure column 8, the upper part of the anchor cables 9 is anchored into the property development basement floor 14, and the part of the anchor cables 9 between the station roof 7 and the property development basement floor 14 is in a straightened state. s 15.2 The steel strands, anchor cables 9 and the longitudinal reinforcement 15 of the station structure column 8 are connected together by binding and cast in the station structure column 8.

[0030] The distance between the station roof 7 and the property development basement floor 14 is 18-22 cm (preferably 20 cm), and the subway station and the property development basement floor are connected together by anchoring the anchor cable 9 into the property development basement floor 14. In addition, the exposed part of the anchor cable 9 is provided with an anti-rust protective layer to prevent the construction time of the property development basement floor 14 from lagging behind the station roof 7.

[0031] Furthermore, a waterproof layer 11 , a waterproof protective layer 12 , and a coarse sand backfill layer 13 are provided between the station roof 7 and the property development basement floor 14 .

[0032] The present invention also discloses an anti-floating method for separating a subway station from a basement structure of an upper property, comprising the following steps:

[0033] Step 1: construct the anti-pulling piles 2 below the station floor 4, and the piles above the station floor 4 elevation are empty and filled with coarse sand.

[0034] Step 2: construct the station's retaining structure 1 and excavate to the station's foundation pit bottom elevation according to design requirements.

[0035] Specifically, the retaining structure 1 is one or a combination of two or more of cast-in-place piles, underground continuous walls, etc.

[0036] Step three, build the station floor 4 and the anti-floating toe extending outward from the floor, the anti-pullout piles 2 intrude into the concrete of the station floor 4 and chisel out, the longitudinal steel bars 15 of the anti-pullout piles 2 are anchored into the station floor 4, and the station floor 4 and the anti-floating toe are cast at the same time.

[0037] Step 4: construct the bottom beam 3, anchor the steel bars of the bottom beam 3 into the enclosure structure 1 through embedded bars or pre-buried connectors, pour the bottom beam concrete, and connect the bottom beam 3 and the enclosure structure 1 into a whole.

[0038] Step five, construct the station slab wall structure, construct the station side wall 5, the station middle plate 6, the station structural column 8, and the station top plate 7 from bottom to top, and pour backfill concrete 10 between the station side wall 5 and the retaining structure 1 while constructing the station side wall 5.

[0039] Specifically, the anchor cable 9 is tied and connected to the longitudinal reinforcement 15 of the station structure column 8 and cast inside the station structure column 8 .

[0040] Step six, constructing a waterproof layer 11, a waterproof protective layer 12, and a coarse sand backfill layer 13 on the station roof in sequence from bottom to top.

[0041] Step seven, construct the property development basement floor 14, straighten the anchor cable 9 and anchor it into the property development basement floor 14.

[0042] The present invention discloses an anti-floating system and method for separating a subway station from a bottom plate of a property development basement. The subway station has an independent anti-floating system, and the anti-floating system is not affected by the upper property development structure, so that the subway station and the upper property basement can be constructed in phases without affecting each other. The subway station is separated from the upper property basement structure, and the two can be constructed in phases. The construction of the subway station is not affected by the property development construction plan and the construction sequence, and the application space of the combination of the subway station and the property development can be expanded. The anti-floating system can meet the independent anti-floating requirements of the subway station and the anti-floating requirements of the property development basement, so that the subway station is not affected by the upper property development construction, and the application space of the combination of the subway station and the upper property development is expanded. The property development basement is connected with the subway station structure column and the top plate through anchor cables. As a part of the anti-floating system of the property development basement, the subway station can solve the anti-floating problem of the property development basement.

[0043] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. An anti-floating system for separating a subway station from a basement floor of a property development, characterized in that: include: Subway station anti-floating system, property development basement floor (14) and anchor cable (9), subway station anti-floating system includes: The station slab wall structure comprises a station bottom plate (4), a station side wall (5), a station middle plate (6), and a station top plate (7); a station structural column (8) is arranged between the station bottom plate (4), the station middle plate (6), and the station top plate (7); the station top plate (7) and the station structural column (8) are connected to a property development basement bottom plate (14) via an anchor cable (9); The enclosure structure (1) is arranged outside the station slab wall structure, the top surface of which is flush with the top surface of the station top plate (7), and backfill concrete (10) is arranged between the station side wall (5); A plurality of pull-out piles (2) are evenly arranged at the bottom of the station floor (4), and longitudinal steel bars of the pull-out piles (2) are anchored into the station floor (4); An anti-floating toe is extended from the outside of the station floor (4), and the anti-floating toe extends outward from the station floor (4) by 0.8 to 1.2 m, and the anti-floating toe is closely attached to the surrounding structure (1); A bottom beam (3) is provided on the anti-floating toe of the station floor (4), and the bottom beam (3) is connected to the enclosure structure (1) via connecting steel bars; The anchor cable between the station roof (7) and the property development basement floor (14) is in a straightened state; A waterproof layer (11), a waterproof protective layer (12), and a coarse sand backfill layer (13) are provided between the station roof (7) and the property development basement floor (14); The anchor cable (9) is connected to the longitudinal reinforcement (15) of the station structure column (8) by binding and is cast in the station structure column (8).

2. An anti-floating method for separating a subway station from a basement floor of a property development, characterized in that: The method is applied to an anti-floating system for separating a subway station from a basement floor of a property development as described in claim 1, comprising the following steps: Step 1: construct the anti-pulling piles (2) below the station floor (4), and the piles above the station floor (4) are empty and filled with coarse sand; Step 2: construct the enclosure structure (1); Step 3: construct the station floor (4) and the anti-floating toe, remove the concrete of the anti-pullout pile (2) intruding into the station floor (4), and anchor the longitudinal steel bars of the anti-pullout pile (2) into the station floor (4); Step 4: Anchor the steel bars of the bottom beam (3) into the enclosure structure (1) and pour the bottom beam concrete; Step 5: construct the station side walls (5), the station middle plate (6), the station structural columns (8), and the station roof (7) from bottom to top; Step 6: constructing a waterproof layer (11), a waterproof protective layer (12), and a coarse sand backfill layer (13) on the station roof in order from bottom to top; Step 7: construct a basement floor (14) for property development, straighten the anchor cable (9) and anchor it into the basement floor (14).

3. The anti-floating method for separating a subway station from a basement floor of a property development according to claim 2, characterized in that: In step 2, the station floor (4) and the anti-floating toe are poured simultaneously.

4. The anti-floating method for separating a subway station from a basement floor of a property development according to claim 2, characterized in that: In step five, while constructing the station side wall (5), backfill concrete (10) is poured between the station side wall (5) and the enclosure structure (1).

5. The anti-floating method for separating a subway station from a basement floor of a property development according to claim 2, characterized in that: In step five, the anchor cable (9) is tied and connected to the longitudinal reinforcement (15) of the station structure column (8), and is cast inside the station structure column (8).

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