CN214362569U

CN214362569U - Prefabricated ballast bed structure of built-in pump house department for urban rail transit

Info

Publication number: CN214362569U
Application number: CN202022905054.6U
Authority: CN
Inventors: 宫寅; 宋相文; 孙成; 李凤煜; 张斌
Original assignee: China Railway Shanghai Design Institute Group Co Ltd
Current assignee: China Railway Shanghai Design Institute Group Co Ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-10-08
Anticipated expiration: 2030-12-07

Abstract

The utility model relates to a prefabricated roadbed structure of built-in pump house department that urban rail transit was used, including the cast in situ reinforced concrete basement, prefabricated bed board, combined material ditch apron and water pump, wherein the middle part of cast in situ reinforced concrete basement is provided with central ditch along tunnel line direction, and the water pump is place in central ditch, and prefabricated bed board erects in the cast in situ reinforced concrete basement and is located the both sides of central ditch, constitutes spacing connection between prefabricated bed board and the cast in situ reinforced concrete basement, and combined material ditch apron sets up the top at central ditch. The utility model has the advantages that: the working conditions that shield tunnel areas or rectangular tunnels with different inner diameter sizes of urban rail transit underground lines are not provided with external pump rooms and drainage pumps are arranged on ballast beds for drainage are met, and the engineering drainage requirements are met; the requirement of third rail installation is met, and the working condition of third rail power supply or third rail backflow is adapted; the structural design is reasonable, and the environmental evaluation vibration reduction requirements of general vibration reduction, medium vibration reduction or high vibration reduction can be met.

Description

Prefabricated ballast bed structure of built-in pump house department for urban rail transit

Technical Field

The utility model belongs to the technical field of urban rail transit engineering technique and specifically relates to a prefabricated roadbed structure of built-in pump house department for urban rail transit.

Background

With the vigorous development of urban rail transit projects in China, more and more projects are not provided with external pump rooms in shield areas or rectangular tunnels, and in order to meet the drainage requirements of underground lines, water pumps are arranged in ballast beds to realize drainage. The mode of pump drainage of the ballast bed is commonly called as a built-in pump house, no unified and mature structure design of the ballast bed of the built-in pump house exists at present, a cast-in-place ballast bed is mostly adopted in general vibration reduction and medium-level areas, and a prefabricated frame type ballast bed is rarely used; the high-level vibration reduction section has no related application.

Disclosure of Invention

The utility model aims at providing a prefabricated ballast bed structure of built-in pump house department that urban rail transit was used according to the not enough of above-mentioned prior art, through adopting prefabricated ballast bed board cooperation ballast bed structural design, realize urban rail transit's built-in pump house design.

The utility model discloses the purpose is realized accomplishing by following technical scheme:

the utility model provides a prefabricated roadbed structure of built-in pump house department that urban rail transit was used which characterized in that: including cast-in-place reinforced concrete basement, prefabricated bed board, combined material ditch apron and water pump, wherein the middle part of cast-in-place reinforced concrete basement is provided with central ditch along tunnel line direction, the water pump is place in the central ditch, prefabricated bed board erects just be located in the cast-in-place reinforced concrete basement the both sides of central ditch, prefabricated bed board with constitute spacing connection between the cast-in-place reinforced concrete basement, combined material ditch apron sets up the top of central ditch.

The outer side surface of the prefabricated road bed plate is provided with a limiting stop table, and the prefabricated road bed plate and the cast-in-place reinforced concrete basement form limiting connection through the limiting stop table.

And a side buffer cushion is arranged between the limiting baffle table and the cast-in-place reinforced concrete substrate.

And a vibration reduction isolation layer is arranged between the bottom surface of the prefabricated road bed plate and the cast-in-place reinforced concrete substrate.

The prefabricated bed slabs positioned on the two sides of the central ditch are connected into a whole through concrete beams or steel pipes.

And more than one water pump is uniformly arranged in the central ditch along the tunnel line direction.

The cast-in-place reinforced concrete substrate is provided with a cable trough and a drain pipe groove, and the cable trough and the drain pipe groove meet the requirements of the water pump for electricity connection and the passing of a drain pipeline.

And a third rail supporting block is arranged on the cast-in-place reinforced concrete base and is positioned on the outer side of the prefabricated track bed plate.

The utility model has the advantages that: the working conditions that shield tunnel areas or rectangular tunnels with different inner diameter sizes of urban rail transit underground lines are not provided with external pump rooms and drainage pumps are arranged on ballast beds for drainage are met, and the engineering drainage requirements are met; the requirement of third rail installation is met, and the working condition of third rail power supply or third rail backflow is adapted; the structural design is reasonable, and the environmental evaluation vibration reduction requirements of general vibration reduction, medium vibration reduction or high vibration reduction can be met; the prefabricated road bed plate is adopted, so that the environment civilization requirement of green construction is met, and the environment protection concept of green buildings is met.

Drawings

Fig. 1 is a plan view of the present invention;

FIG. 2 is a cross-sectional view taken at A-A in FIG. 1;

fig. 3 is a cross-sectional view at B-B in fig. 1.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-3, the symbols 1-10 in the figures are respectively expressed as: the track bed comprises a prefabricated track bed plate 1, a side type buffer cushion 2, a vibration reduction isolation layer 3, a cast-in-place reinforced concrete substrate 4, a composite material ditch cover plate 5, a third rail 6, a water pump 7, a third rail supporting block 8, a cable trough 9 and a drain pipe groove 10.

Example (b): as shown in fig. 1 to fig. 3, the prefabricated ballast bed structure at the built-in pump room for urban rail transit in this embodiment is suitable for a shield tunnel area with an inner diameter of 5400mm or more or a rectangular tunnel without an external pump room and a ballast bed with a drainage pump (i.e., a drainage pump is disposed on a track ballast bed), and aims to meet the drainage requirement.

Specifically, as shown in fig. 1 and 3, a cast-in-place reinforced concrete base 4 is provided inside the tunnel, and a central gutter for collecting water is provided at a central position of the cast-in-place reinforced concrete base 4. The central ditch extends along the line direction of tunnel and arranges, and even interval arrangement has a plurality of water pumps 7 in the central ditch, and water pump 7 is used for discharging the ponding in the central ditch outside the shield tunnel. A cable trough 9 and a drain pipe channel 10 are arranged at the position of the cast-in-place reinforced concrete base 4 corresponding to the water pump 7, wherein the cable trough 9 is used for passing cables required by the operation of the water pump 7, and the drain pipe channel 10 is used for draining the water pump 7.

Referring to fig. 1 and 2, the prefabricated track bed slab 1 is constructed in a prefabricated frame structure, and is erected on steps at both sides of a cast-in-place concrete base 4. The outer side of the prefabricated bed plate 1 is provided with a limiting stop platform protruding out of the surface of the prefabricated bed plate, and the limiting stop platform is matched with the side buffer cushion 2 to realize longitudinal and transverse limiting between the prefabricated bed plate 1 and the cast-in-place reinforced concrete base 4, so that the installation precision of the prefabricated bed plate 1 is ensured, the stability in operation is improved, and safety and stability are ensured. A vibration reduction isolation layer 3 is arranged between the bottom surface of the prefabricated track bed plate 1 and the cast-in-place reinforced concrete base 4, and the vibration reduction isolation layer 3 is used for preventing the vibration generated during the track traffic operation from being further transmitted to the cast-in-place reinforced concrete base 4 through the prefabricated track bed plate 1, so that various different working conditions of general vibration reduction, medium vibration reduction or high vibration reduction are met.

In this embodiment, prefabricated bed board 1 is prefabricated component, and the plate body area that is located prefabricated bed board 1 of both sides is great, connects through setting up concrete beam or steel pipe between these two part plate bodies to improve prefabricated bed board 1's wholeness.

As shown in fig. 1, a composite material ditch cover plate 5 is arranged between prefabricated track bed boards 1, and the composite material ditch cover plate 5 covers a central ditch on a cast-in-place reinforced concrete base 4 to ensure that the track bed surface is flat.

As shown in fig. 2 or fig. 3, a third rail support block 9 is arranged on the surface of the cast-in-place reinforced concrete base 4, the third rail support block 9 is positioned on one side of the prefabricated track bed slab 1, and a third rail 6 can be installed through the third rail support block, so that the requirements of power supply or third rail backflow of the third rail in the rail traffic engineering are met.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, the description thereof is not repeated herein.

Claims

1. The utility model provides a prefabricated roadbed structure of built-in pump house department that urban rail transit was used which characterized in that: including cast-in-place reinforced concrete basement, prefabricated bed board, combined material ditch apron and water pump, wherein the middle part of cast-in-place reinforced concrete basement is provided with central ditch along tunnel line direction, the water pump is place in the central ditch, prefabricated bed board erects just be located in the cast-in-place reinforced concrete basement the both sides of central ditch, prefabricated bed board with constitute spacing connection between the cast-in-place reinforced concrete basement, combined material ditch apron sets up the top of central ditch.

2. The prefabricated ballast bed structure at the built-in pump house for the urban rail transit as claimed in claim 1, wherein: the outer side surface of the prefabricated road bed plate is provided with a limiting stop table, and the prefabricated road bed plate and the cast-in-place reinforced concrete basement form limiting connection through the limiting stop table.

3. The prefabricated ballast bed structure at the built-in pump house for the urban rail transit as claimed in claim 2, wherein: and a side buffer cushion is arranged between the limiting baffle table and the cast-in-place reinforced concrete substrate.

4. The prefabricated ballast bed structure at the built-in pump house for the urban rail transit as claimed in claim 1, wherein: and a vibration reduction isolation layer is arranged between the bottom surface of the prefabricated road bed plate and the cast-in-place reinforced concrete substrate.

5. The prefabricated ballast bed structure at the built-in pump house for the urban rail transit as claimed in claim 1, wherein: the prefabricated bed slabs positioned on the two sides of the central ditch are connected into a whole through concrete beams or steel pipes.

6. The prefabricated ballast bed structure at the built-in pump house for the urban rail transit as claimed in claim 1, wherein: and more than one water pump is uniformly arranged in the central ditch along the tunnel line direction.

7. The prefabricated ballast bed structure at the built-in pump house for the urban rail transit as claimed in claim 1, wherein: the cast-in-place reinforced concrete substrate is provided with a cable trough and a drain pipe groove, and the cable trough and the drain pipe groove meet the requirements of the water pump for electricity connection and the passing of a drain pipeline.

8. The prefabricated ballast bed structure at the built-in pump house for the urban rail transit as claimed in claim 1, wherein: and a third rail supporting block is arranged on the cast-in-place reinforced concrete base and is positioned on the outer side of the prefabricated track bed plate.