A rail-borne floor station bridge transition connection system and structural system for a railway station building

Abstract

This invention discloses a transition connection system and structural system for a railway station bridge at the track-bearing level. A bridge pier is installed on top of the foundation structure, supporting the bridge beam structure and featuring a rotatable approach plate end seismic bearing. A bridge-integrated frame column is cast on one side of the bridge pier, located on top of the foundation structure. A track-bearing layer frame beam is erected on top of this frame column, with a support pier connected to its top. A pre-embedded steel plate is embedded in the top of the support pier, and seismic bearings are installed on the pre-embedded steel plate. A rotatable approach plate structure is installed on the seismic bearings, with the other end of the rotatable approach plate resting on the seismic bearing at the top of the pier. This transition connection system and structural system effectively reduces the relative lateral deformation at the beam ends, preventing shear damage to the track and ensuring safe railway operation. The structural design locally lowers the track-bearing layer frame structure in the transition zone, reserving space for maintenance and replacement of the lower support pier, thus meeting train operation requirements while facilitating subsequent maintenance work.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, specifically to a transition connection system and structural system for the track-bearing layer of railway station buildings. Background Technology

[0002] With economic development, my country's high-speed rail construction has achieved a qualitative leap in the past decade or so. By the end of 2020, my country's high-speed railway operating mileage reached 37,900 kilometers, with over 500 high-speed rail stations. The development of high-speed rail complements urban development. As urban construction accelerates, urban land resources become increasingly scarce. To conserve and integrate urban land resources, some large and medium-sized station buildings and yards adopt elevated structures, making full use of the underground space to house railway equipment rooms, parking lots, and even waiting rooms. To ensure better insulation, waterproofing, and comfortable use of the underground space, the central elevated station yard's track-bearing layer often adopts a well-integrated frame structure combining construction and bridge construction, while the track-bearing layers on both sides, where lower space requirements are less stringent, utilize conventional bridge structures.

[0003] According to Article 7.3.3 of the "Design Code for High-Speed ​​Railways" TB10621-2014, "The lateral relative displacement of the rail supports on both sides of adjacent beam ends of a ballastless track bridge should not exceed 1 mm." Ballastless tracks have high requirements for lateral deformation at the bridge ends. However, for rail-bearing layers using both bridge and frame structures, the vertical deformation of the bridge structure is smaller under temperature effects, while the vertical deformation of the "bridge-frame integration" structure is larger. The relative lateral deformation at the junction of these two structures is difficult to meet the code requirements. Furthermore, under temperature effects, excessive relative lateral deformation can easily cause shear failure of the rails at the junction, significantly impacting the safe operation of trains.

[0004] Therefore, this patent discloses a transition connection system and structural system for rail-bearing station bridges that can coordinate and effectively reduce the relative deformation at the junction of two different structures, which can effectively solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a transition connection system and structural system for the track-bearing layer of railway station buildings, in order to solve the problem mentioned in the background art that the relative deformation at the transition connection of the track-bearing layer of large high-speed railway station buildings is too large, which easily causes track shear damage and affects the safe operation of railways.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a transition connection system and structural system for a railway station bridge at the track-bearing level, comprising: a foundation structure, a bridge pier in front of the station, a bridge-building integrated frame column, a track-bearing layer frame structure beam, a track-bearing layer frame structure slab, a bridge beam structure, bearing supports, seismic bearings, embedded steel plates for the bearings, rotatable approach plates, and bridge abutments. The foundation structure is topped with a bridge pier in front of the station. The bridge beam structure is fixed to the top of the bridge pier in front of the station. Bridge abutments are cast on the bridge beam structure. A bridge-building integrated frame column is cast on one side of the bridge pier in front of the station and on top of the foundation structure. A track-bearing layer frame structure beam is erected on top of the bridge-building integrated frame column. A bearing support is connected to the top of the track-bearing layer frame structure beam. A steel plate is embedded in the top of the bearing support. Seismic bearings are installed on the embedded steel plates. A rotatable approach plate is placed on the seismic bearing. A steel plate is installed at the lower part of the rotatable approach plate corresponding to the lower bearing.

[0007] Preferably, the rail-supporting frame structure beam further includes a rail-supporting frame structure slab, and the rail-supporting frame structure slab and the rail-supporting frame structure beam are integrally cast.

[0008] Preferably, the support pier is internally fitted with reinforcing bars.

[0009] Preferably, the surface of the pre-embedded steel plate of the support is provided with reinforcing bar insertion holes, the reinforcing bar insertion holes in the pre-embedded steel plate of the support are welded to the reinforcing bars on the support pier, and the weld joint between the pre-embedded steel plate of the support and the reinforcing bars on the support pier is treated by plug welding and grinding.

[0010] Preferably, a transitional connection structure system for the track-bearing layer of a railway station building with integrated bridge construction includes the following steps:

[0011] Step 1: Based on the geological survey data, determine the joint foundation of the bridge and frame columns for the track-bearing layer and the form of the "integrated bridge and building" frame column foundation, and implement the foundation structure;

[0012] Step 2: Determine the structural dimensions of the bridge piers and beams in front of the station, as well as the elevation of the beam surface.

[0013] Step 3: Determine the cross-sections and layout of the beams, slabs, and columns of the integrated bridge-building frame. The integrated bridge-building frame and the bridge should be separated by a joint, and the joint width must meet the minimum width requirements of the specifications.

[0014] Step 4: Determine the length and thickness of the rotatable ramp according to the calculation requirements;

[0015] Step 5: Based on the length and thickness of the rotatable slab and the layout of the rail-supporting layer frame, determine the local drop and elevation of the rotatable slab area;

[0016] Step 6: Determine the dimensions of the support pier and the embedded steel plate of the support according to the calculation. The reinforcement of the support pier is embedded in the beam slab of the rail bearing layer and directly connected to the rail bearing layer structure. Embedded steel plate parts are set on the upper part of the support pier.

[0017] Step 7: Select seismic bearings for the slab according to the load requirements, and embed the seismic bearings in the middle of the front and rear bearing piers;

[0018] Step 8: Pour or install the rotatable support plate above the support, embed the support pre-embedded steel plate on the rotatable support plate, and connect it with the lower support pier or support pre-embedded steel plate;

[0019] Step 9: At the end of the rotatable approach slab, the bridge retaining wall is cast onto the bridge beam.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The transition connection system and structural system of the present invention can effectively reduce the relative lateral deformation of the beam end, avoid shear damage to the track, and prevent the railway from being affected in safe operation.

[0022] 2. The structure of this invention partially lowers the rail-bearing layer frame structure in the transition zone, reserving space for the maintenance and replacement of the lower support of the approach plate, which not only meets the requirements of train operation but also facilitates subsequent maintenance work. Attached Figure Description

[0023] Figure 1 This is a schematic plan view of the transition zone between the rail-bearing layer and the bridge in this invention.

[0024] Figure 2 This is a schematic cross-sectional view of the transition zone of the rail-bearing layer station bridge according to the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the connection between the support plate and the support of the present invention;

[0026] Figure 4 This is a schematic diagram of the connection between the support pier and the rail bearing layer of the present invention;

[0027] Figure 5 This is a schematic diagram of the support embedded plate of the present invention.

[0028] In the diagram: 1. Basic structure; 2. Bridge piers in front of the station; 3. Frame columns for bridge construction; 4. Frame beams of the rail bearing layer; 5. Frame slabs of the rail bearing layer; 6. Bearings and piers; 7. Seismic bearings; 8. Embedded steel plates for bearings; 9. Rotatable approach slabs; 10. Bridge abutments. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-5 This invention provides a technical solution: a transition connection system and structural system for the track-bearing layer of a railway station building, comprising: a foundation structure 1, a bridge pier 2, a bridge-building integrated frame column 3, a track-bearing layer frame structure beam 4, a track-bearing layer frame structure slab 41, a bridge beam structure 5, a support pier 6, a seismic bearing 7, a bearing embedded steel plate 8, a rotatable approach slab 9, and a bridge abutment 10. The bridge pier 2 is set on the top of the foundation structure 1, and the bridge beam structure 5 is fixed on the top of the bridge pier 2. At the same time, a rotatable approach slab bottom seismic bearing 7 is set on the top of the bridge pier 2. A bridge-building integrated frame column 3 is poured on one side of the bridge pier 2 and located on the top of the foundation structure 1. The track-bearing layer frame structure beam 4 is erected on the top of the bridge-building integrated frame column 3. The foundation structure 1, the bridge pier 2, the bridge beam, the frame structure column, the structural beam and slab serve as the main supporting structural system, and a rotatable approach slab system is arranged on the basis of this supporting system. The top of the beam 4 of the track-bearing layer frame structure is connected to a support pier 6. A support embedded steel plate 8 is placed on the top of the support pier 6. The support embedded steel plate 8 and the support pier 6 serve as supporting components for the seismic bearing 7. The seismic bearing 7 is installed on the upper part of the support embedded steel plate 8. The seismic bearing 7 has a rotation function and simultaneously restricts longitudinal and lateral displacement. The seismic bearing 7 has a rotatable plate 9.

[0031] The lower part of the rotatable approach plate 9 is embedded with a support pre-embedded steel plate 8 at the corresponding position of the lower support. The rotatable approach plate 9 can be cast in place or assembled. It can effectively unload the lateral deformation of the rail bearing layer frame structure, so that the difference in lateral deformation between the bridge in front of the station and the frame structure is controlled within the allowable range of the specification. The end of the bridge beam body that overlaps with the rotatable approach plate 9 is cast with a bridge abutment 10, which acts as a rail-direction limiting device.

[0032] The rail-supporting frame structure beam 4 also includes a rail-supporting frame structure slab 41, which is cast on top of the rail-supporting frame structure beam 4.

[0033] The support pier 6 is internally reinforced with steel bars.

[0034] The surface of the pre-embedded steel plate 8 of the support is provided with reinforcing bar insertion holes. The reinforcing bar insertion holes in the pre-embedded steel plate 8 of the support are welded to the reinforcing bars on the support pier 6. The welded joints between the pre-embedded steel plate 8 of the support and the reinforcing bars on the support pier 6 are treated by plug welding and grinding.

[0035] A transition connection system and structural system for track-bearing level station bridges in railway station buildings, comprising the following steps:

[0036] Step 1: Based on the geological survey data, determine the joint foundation of the bridge and frame columns of the track-bearing layer and the form of the "bridge-building integration" frame column foundation, and implement the foundation structure 1;

[0037] Step 2: Determine the dimensions of the bridge piers 2 and the bridge beam structure 5 in front of the station, as well as the elevation of the beam surface;

[0038] Step 3: Determine the cross-sections and layout of the rail-supporting layer frame structure beam 4, the rail-supporting layer frame structure slab 41, and the bridge-integrated frame column 3. The bridge-integrated frame and the bridge are separated by a joint, and the joint width must meet the minimum width requirement of the specification.

[0039] Step 4: Determine the length and thickness of the rotatable ramp 9 according to the calculation requirements;

[0040] Step 5: Based on the length and thickness of the rotatable slab 9 and the layout of the rail support layer frame, determine the local drop and elevation of the rotatable slab 9.

[0041] Step 6: Determine the dimensions of the support pier 6 and the embedded steel plate 8 based on the calculation. The reinforcement of the support pier is embedded in the beam slab of the rail bearing layer and directly connected to the rail bearing layer structure. Embedded parts of the embedded steel plate 8 are set on the upper part of the support pier 6.

[0042] Step 7: Select seismic bearing 7 for the slab according to the load requirements, and embed the seismic bearing 7 in the middle of the front and rear bearing piers 6.

[0043] Step 8: Pour or install the rotatable plate 9 above the support. The bottom of the rotatable plate 9 is embedded with the support pre-embedded steel plate 8 at the corresponding position of the lower support, and connected to the lower support pier 6 or the support pre-embedded steel plate 8.

[0044] Step 9: At the end of the rotatable approach plate 9, the bridge abutment 10 is poured on the bridge beam.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transition connection system for track-bearing level station bridges in railway station buildings, comprising: The basic structure (1), the bridge piers (2), the integrated bridge-building frame columns (3), the rail-bearing layer frame structure beams (4), the rail-bearing layer frame structure slabs (41), the bridge beam structure (5), the bearing piers (6), the seismic bearings (7), the bearing embedded steel plates (8), the rotatable approach slabs (9), and the bridge abutments (10) are characterized in that: the top of the basic structure (1) is provided with the bridge piers (2) and the integrated bridge-building frame columns (3), the bridge piers (2) support the bridge beam structure (5) and the seismic bearings (7) at the ends of the rotatable approach slabs (9), and the rotatable approach slabs (9) support the bridge beam structure (5). A bridge abutment (10) is cast on the end of the rotating approach plate (9). A bridge-building integrated frame column (3) is cast on one side of the bridge pier (2) and on the top of the foundation structure (1). A rail-bearing layer frame structure beam (4) is erected on the top of the rail-bearing layer frame structure beam (4). A support pier (6) is connected to the top of the support pier (6). A support embedded steel plate (8) is set on the top of the support pier (6). An anti-seismic bearing (7) is installed on the support embedded steel plate (8). A rotating approach plate (9) is placed on the anti-seismic bearing (7).

2. The transition connection system for the track-bearing level of a railway station building according to claim 1, characterized in that: The bridge beam structure (5) rests on the bridge pier (2) in front of the station. The top of the bridge pier (2) in front of the station is equipped with seismic bearings (7). The bridge pier (2) in front of the station is separated from the integrated bridge frame column (3) and the rail bearing layer frame structure beam (4) by a joint and connected by a rotatable approach plate (9).

3. The transition connection system for the track-bearing level of a railway station building according to claim 1, characterized in that: The rail-supporting frame structure beam (4) also includes a rail-supporting frame structure plate (41), which is integrally cast with the rail-supporting frame structure beam (4).

4. The transition connection system for the track-bearing level of a railway station building according to claim 1, characterized in that: The support pier (6) is internally equipped with steel bars, and the support pier steel bars are integrally cast with the rail bearing layer frame structure beam (4) and the rail bearing layer frame structure slab (41).

5. A transition connection system for track-bearing level station bridges in railway station buildings according to claim 1, characterized in that: The surface of the pre-embedded steel plate (8) of the support is provided with a steel bar insertion hole. The steel bar insertion hole in the pre-embedded steel plate (8) of the support is welded to the steel bar on the support pier (6). The welded joint between the pre-embedded steel plate (8) of the support and the steel bar on the support pier (6) is treated by plug welding and grinding.

6. The transition connection system for the track-bearing level of a railway station building according to claim 1, characterized in that: The rotatable approach plate (9) is placed on the seismic support (7). One end of the seismic support (7) is located on the top of the bridge pier (2) in front of the station, and the other end is located on the rail bearing layer of the integrated bridge and bridge frame column (3) structure. The rotatable approach plate (9) is appropriately set with some support piers (6) in the middle of the span to reduce the span of the approach plate.

7. A transition connection structure system for the track-bearing layer of a railway station building, characterized in that, Includes any one of claims 1-6, and employs the following steps: Step 1: Based on the geological survey data, determine the joint foundation of the bridge and frame columns of the track-bearing layer and the form of the "integrated bridge and bridge construction" frame column foundation, and implement the foundation structure (1). Step 2: Determine the dimensions of the bridge piers (2), the bridge beam structure (5), and the elevation of the beam surface of the bridge in front of the station; Step 3: Determine the cross-section and layout of the rail-supporting layer frame structure beam (4), the rail-supporting layer frame structure slab (41), and the bridge-integrated frame column (3). The bridge-integrated frame column (3) is separated from the bridge joint, and the joint width must meet the minimum width requirement of the specification. Step 4: Determine the length and thickness of the rotatable ramp (9) according to the calculation requirements; Step 5: Based on the length and thickness of the rotatable ramp (9) and the layout of the rail support layer frame, determine the local drop and elevation of the rotatable ramp (9); Step 6: Determine the dimensions of the support pier (6) and the embedded steel plate (8) based on the calculation. The support reinforcement is embedded in the beam slab of the rail bearing layer and directly connected to the rail bearing layer structure. Embedded parts of the embedded steel plate (8) are set on the upper part of the support pier (6). Step 7: Select seismic bearings (7) for the slab according to the load requirements, and install seismic bearings (7) in the middle of the front and rear support piers (6); no seismic bearings (7) are installed at the top of the middle support pier. Step 8: Pour or install the rotatable plate (9) above the support. The bottom of the rotatable plate (9) is embedded with a support pre-embedded steel plate (8) corresponding to the lower support, so as to facilitate connection with the lower support pier (6) or the support pre-embedded steel plate (8). Step 9: At the end of the rotatable slab (9), the bridge abutment (10) is poured on the bridge beam.

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