Prefabricated and flexible earthquake-resistant self-resetting structure associated with a subway station

Abstract

The present disclosure discloses a self-reset flexible earthquake-resistant system of the prefabricated subway station, comprising prefabricated component prestressed tendon, waterproof rubber, and rubber bearing. The main structure of station is built by connection between prestressed tendon and prefabricated component, it changes the connection methods of connection node from consolidation joint to hinged joint which makes the subway station into a flexible system, while at the same time, self-reset function is realized by prestressed tendon; T and system is combined with rubber waterproof tape, and rubber bearing which is installed in connection site of prefabricated component, multi-protection measures of waterproof is realized, earthquake-resistant effect is also realized. Connection problem with the prefabricated component can be solved by the self-reset flexible earthquake-resistant system of the prefabricated subway station; underground station structure is changed into the flexible system through releasing bending moment in connection site of the prefabricated component, deforming ability of subway station is improved, the earthquake-resistant ability of underground subway station is improved.

Claims

1. A prefabricated and flexible earthquake-resistant self-resetting structure associated with a subway station, the structure comprising: a prefabricated top plate, a prefabricated side wall, a prefabricated middle plate, a prefabricated bottom plate, a prefabricated middle column, a prestressed tendon, a waterproof adhesive tape, and a rubber bearing, wherein: the waterproof adhesive tape and the deformed rubber bearing are installed on a connection site between the prefabricated top plate and the prefabricated side wall, the waterproof adhesive tape and the deformed rubber bearing are installed on a connection site between the prefabricated side wall and the prefabricated middle plate, the waterproof adhesive tape and large deformation rubber bearing are installed on a connection site between the prefabricated side wall and the prefabricated bottom plate, the deformed rubber bearing is installed on a connection site between the prefabricated top plate and the prefabricated middle column, the deformed rubber bearing is installed on a connection site between the prefabricated middle plate and the prefabricated middle column, the deformed rubber bearing is installed on a connection site between the prefabricated bottom plate and the prefabricated middle column; the prestressed tendon is used for connecting the prefabricated side wall and an additional prefabricated side wall, the prefabricated middle plate, the prefabricated bottom plate, and the prefabricated middle column are connected with the waterproof adhesive tape and the deformed rubber bearing, and are configured to add prestress to keep the deformed rubber bearings under a compression state to reach waterproof effects, and the waterproof adhesive tape is compressed by lateral pressure to make the subway station to form the self-resetting structure.

2. The structure of claim 1, wherein the waterproof adhesive tape and the deformed rubber bearing are combined to form a waterproof damping member with a shape of T and .

3. The structure of claim 1, wherein the prefabricated side wall is connected by two rows of the prestressed tendons and is pressed.

4. The structure of claim 1, wherein the prefabricated middle column is connected by a single row of the prestressed tendon and is pressed.

5. The structure of claim 1, wherein a steel plate inner deformed rubber bearing is fully packed by rubber, and thickness of outermost rubber is no less than 5 mm.

6. The structure of claim 1, further comprising: prestressed reinforcement channels are installed at an inner of the prefabricated top plate, the prefabricated side wall, the prefabricated middle plate, the prefabricated bottom plate, the prefabricated middle column, and a diameter of channel matches with the diameter of a prestressed tendon, height of the prestressed reinforcement channels of the prefabricated side wall to juncture is of the waterproof adhesive tape.

7. The structure of claim 1, wherein multiple detection pipelines are vertically set on both ends of prefabricated side wall along the station, and the detection pipelines belong to a range of the waterproof adhesive tape.

8. The structure of claim 1, wherein detection pipelines are set to tilt down.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1: structure diagram of the self-reset flexible earthquake-resistant system of the prefabricated subway station.

[0020] FIG. 2: waterproof T diagram of the self-reset prefabricated subway station.

[0021] FIG. 3: waterproof diagram of the self-reset prefabricated subway station.

[0022] FIG. 4: top view of the prefabricated side wall.

[0023] FIG. 5: top view of prefabricated middle column, top plate, middle plate, and bottom plate.

[0024] FIG. 6: node diagram of the side wall and the bottom plate of the self-reset prefabricated subway station.

[0025] FIG. 7: node diagram of the side wall and the middle plate of the self-reset prefabricated subway station.

[0026] FIG. 8: node diagram of the side wall and the top plate of the self-reset prefabricated subway station.

[0027] FIG. 9: location diagram of waterproof adhesive tape and large deformation rubber bearing of the self-reset prefabricated subway station. 1prefabricated top plate, 2prefabricated side wall, 3prefabricated middle plate, 4prefabricated bottom plate, 5prefabricated middle column, 6prestressed tendon, 7waterproof adhesive tape, 8rubber bearing, 9prestressed reinforcement channels, 10detection pipeline, and 11underground water detection device and packer.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] As shown in FIGS. 1-9, the present disclosure discloses a self-reset flexible earthquake-resistant system of prefabricated subway station, self-reset earthquake-resistant prefabricated subway station system is built by connecting prestress tendon with large deformation rubber bearing, comprising: prefabricated component, prestressed tendon (6), waterproof rubber (7) and rubber bearing (8); prefabricated component including: prefabricated top plate (1), prefabricated side wall (2), prefabricated middle plate (3), prefabricated bottom plate (4), and prefabricated middle column (5).

[0029] Prefabricated components mentioned above are: vertical prestressed reinforcement channels (9) preset inner prefabricated component which is depth-optimized based on underground system using function and structure style, many detection pipelines (10) is set horizontally and aslant with different height on top and bottom of prefabricated side wall to detect underground water osmosis, grouting process can be finished in later period to remedy the low durability of rubber material.

[0030] Prestressed tendon (6) is made of steel strand with high-intensity, and high-tenacity, rust-resisting material is painted outside. Using prestressed tendon passes through the component from bottom plate to top plate successively with a certain tensioning force. This kind of connection will release the bending moment in connection site which makes the structure compatible deformed with surrounding soil; the whole structure is self-reset under the effect of the tension on the prestressed tendon.

[0031] Connection problem with the prefabricated component is solved perfectly through prestressed tendon (6) mentioned above, the deformability of the structure is improved by using unbonded prestressed tendon. Waterproof rubber in connection site can be divided into two types, T shape waterproof system is used in commissure between side wall and top plate or bottom plate, shape waterproof system is used in commissure between side wall and middle plate, waterproof adhesive tape is set in the shape of crescent moon, waterproof rubber is compressed tightly under outside pressure.

[0032] Waterproof rubber (7) in commissure is a waterproof system in different shape and earthquake-resistant structure of component connection. Waterproof rubber is used outside the side wall; steel plate is added inner rubber bearing, rubber thickness of the outermost is no less than 5 mm, waterproof rubber and large deformation rubber bearing is combined. Large deformation and waterproof can be realized at the same time.

[0033] Large deformation rubber bearing (8) is plate bearing made of rubber, the connection between large deformation rubber bearing, middle column and station top and middle plate. The earthquake-resistant ability of middle column is improved.

[0034] Based on the advantages of prefabricated structure and combines underground seismic hazard, connection drawback of the prefabricated structure is remedied. Using prefabricated tendon to connect component, waterproof rubber is combined with large deformation rubber bearing, the bending moment in connection site is released. It plays the earthquake-resistant role during an earthquake, while at the same time, it has a self-reset function.

[0035] Next, the preferred embodiments will be described in more details accompanied with FIG. 1-9.

[0036] Based on the specific function of the station, rational design and deeply analyze the stress form and deep optimization of the prefabricated component.

[0037] Prestressed reinforcement channels (9) is preset in the prefabricated component. Embodiments here preset detection pipeline (10) horizontally, finish installation of prefabricated bottom plate (4) and installation of prestressed tendon (6) of anchor foundation plate; while at the same time, finish installation of waterproof adhesive tape (7) and Large deformation rubber bearing (8), then, finish installation of the prefabricated side wall. The embodiments immobilize waterproof adhesive tape (7), large deformation rubber bearing (8) and prefabricated middle plate (3), process integral hoisting and using prestressed tendon (6) for connection, and then, install top prefabricated side wall (2), waterproof adhesive tape (7) and large deformation rubber bearing (8) on the top of the station and prefabricated top plate (1). Middle column is installed in the same way; external force is provided by jack, and it forces prestressed tendon (6) with a certain intensity to keep large deformation rubber bearing (8) in commissure under pressing state.

[0038] Waterproof adhesive tape (7) outside the side wall is pressed through external soil pressure which makes waterproof adhesive tape (7) contacts side wall closely. Underground water detection device is installed in detection pipeline (10).

[0039] After finishing the installation of the whole structure, installation of other structures is processed.

[0040] The present disclosure discloses a self-reset flexible earthquake-resistant system of prefabricated subway station based on underground seismic hazard and underground damage mechanism. Prefabricated component after specialized design and deep optimization, installation accuracy is ensured. Waterproof adhesive tape (7) and large deformation rubber bearing (8) are integrated; it not only meets the waterproof requirement of traditional materials but also reaches the requirement of earthquake-resistant effect. Prestress and deformation bearing connection are used in prefabricated connection site. Node bending moment is released, which makes structure system into the flexible system, compatible deforming with surrounding soil, and the earthquake-resistant ability of structure is improved; while at the same time, prestressed tendon makes the structure have a self-resetting function.