CN216662252U

CN216662252U - Subway tunnel end well region gantry crane track beam mounting structure

Info

Publication number: CN216662252U
Application number: CN202220237674.3U
Authority: CN
Inventors: 傅鑫晖; 袁杰; 南勇; 肖翔; 田敏
Original assignee: Fujian Zhongjian Railway Construction Co ltd; China Construction Infrastructure Co Ltd
Current assignee: Fujian Zhongjian Railway Construction Co ltd; China Construction Infrastructure Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-06-03
Anticipated expiration: 2032-01-28

Abstract

The utility model relates to a gantry crane track beam mounting structure for a subway tunnel end well region, wherein a ground track beam is fixed on a construction surface of the end well region, and a plurality of lattice columns are arranged in the range of the end well region along the extension direction of the ground track beam; the top of each lattice column is provided with an I-shaped steel beam, the length of the I-shaped steel beam is equal to the width of the well region of the end head, and the top surface and the construction surface of the I-shaped steel beam are positioned on the same horizontal plane; the utility model can lead the track beam to pass through the end well region in a straight line without increasing the distance between two tracks, and the latticed column is easy to manufacture.

Description

Subway tunnel end well region gantry crane track beam mounting structure

Technical Field

The utility model relates to the technical field of subway tunnel construction, in particular to a gantry crane track beam structure of a subway tunnel end well region.

Background

The subway construction in China is developed, and more subway tunnel projects are available. Subway tunnels are usually in bidirectional parallel, a connection area is arranged between the two tunnels for fire fighting and emergency danger avoidance, and the connection area is generally constructed by a shield construction method. A gantry crane in a tunnel is essential in subway construction as main large-scale equipment matched with shield construction. During construction, the gantry crane moves on a track beam, the track beam is usually arranged on an underground continuous wall, and the underground continuous wall refers to a reinforced concrete supporting beam on a tunnel top plate. The rail beam is arranged on the underground continuous wall, namely the rail beam is arranged along the tunnel, and the method is most space-saving.

Because the subway station often need pass through the urban area, in order to transfer equipment from subway station hoist and mount in the urban area subway station position, the design has the end well region to subway station construction face width grow, the continuous wall in the construction face still needs to cut. There is not the installation basis at end well district track roof beam, appears the suspension section, and the common way of track roof beam cross end well district among the prior art is concrete track roof beam, and the material is extravagant serious, and can't have enough to meet the need the use, and the later stage abolishes the expense high. The other method is to manufacture the steel box girder support by self, the method is greatly influenced by welding level, and the manufactured steel box girder has different structures due to uneven construction level of each unit. Especially, if the support adopts a bailey frame, the elevation of the track beam is difficult to accurately adjust. The mechanical property of the finally manufactured steel beam is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the track beam of the portal crane end well in the prior art is inconvenient to construct on site and long in period.

The utility model solves the problems and adopts the technical scheme that:

a gantry crane track beam mounting structure for a subway tunnel end well region is characterized in that a ground track beam is fixed on a construction surface of the end well region, and a plurality of lattice columns are arranged in the range of the end well region along the extension direction of the ground track beam; the top of each lattice column is provided with an I-shaped steel beam, the length of the I-shaped steel beam is equal to the width of the well region of the end head, and the top surface and the construction surface of the I-shaped steel beam are positioned on the same horizontal plane; the top surface of the I-shaped steel beam is fixedly connected with a spanning section track beam, and the spanning section track beam is connected with ground track beams on two sides of the end well region.

Compared with the prior art, the utility model adopting the technical scheme has the beneficial effects that:

the utility model can lead the track beam to pass through the end well region in a straight line without increasing the distance between two tracks, the latticed column is easy to manufacture, compared with the latticed column, the utility model has the advantages of guaranteed mechanical property and strength, contribution to standardized production, easy processing and convenient reuse, the latticed support adopts the rest latticed column of the station, better material saving and adjustable elevation according to the field condition.

Preferably, the further technical scheme of the utility model is as follows:

the lattice column base is fixed on the tunnel top plate and the end part of the cross beam. This scheme utilizes the original structure that can the bearing in scene, reduces lattice column length, practices thrift the steel quantity.

The lattice column is composed of four angle steels and connecting plates uniformly welded on the outer sides of the angle steels, and the lattice columns are arranged at equal intervals.

The section of the I-shaped steel beam is in a shape like a Chinese character ya. The section steel has strong rigidity and is stable as a foundation.

The bottom of the track beam at the spanning section is poured with the I-shaped steel beam into a whole through concrete. The track beam and the foundation beam are fixedly connected stably, and the safe movement of the gantry crane is guaranteed.

Drawings

FIG. 1 is a schematic view of a structure of a railway beam installed at a terminal well of a subway station according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 4 is a schematic view of the installation structure of the track beam of the spanning section.

In the figure: 1. constructing a surface; 2. an end well; 3. a cross beam; 4. hoisting equipment construction holes; 5. a lattice column; 6. a ground track beam; 7. a span section track beam; 8. an I-shaped steel beam.

Detailed Description

The utility model will be further illustrated by the following examples, which are intended only for a better understanding of the present invention and therefore do not limit the scope of the utility model.

Referring to fig. 1 to 4, in an end well construction area, a ground track beam 6 is fixed on an end well construction surface 1, a tunnel continuous wall and a cross beam are arranged below the end well construction surface 1, and the connecting continuous wall and the cross beam are supporting structures of a tunnel top plate. And a hoisting equipment construction hole 4 is formed in the top plate of the tunnel at the subway station position so as to transfer large-scale construction equipment into the tunnel. The height difference between the end well 2 and the construction hole 4 of the hoisting equipment is about 1 m. The utility model designs a track beam for a suspended section of a station end well 2, which utilizes finished I-steel and station scrapped latticed columns as a supporting foundation of a steel-structured track beam, and the specific scheme is as follows: a ground track beam 6 is fixed on the construction surface 1 of the end well region, and a plurality of lattice columns 5 are arranged in the range of the end well 2 along the extension direction of the ground track beam 6; the top of each lattice column 5 is provided with an I-shaped steel beam 8, and the top surface of the I-shaped steel beam 8 and the construction surface 1 are in the same horizontal plane; the top surface of the I-shaped steel beam 8 is fixedly connected with a spanning section track beam 7, and the spanning section track beam 7 is connected with the ground track beams 6 on the two sides of the end well 2.

The lattice column 5 can be prefabricated in advance and installed on site when in use, and the rest lattice columns in station construction can be adopted, so that materials are saved better. The lattice column 5 of the present invention can be reused. The lattice column 5 is composed of four angle steels and connecting plates uniformly welded on the outer sides of the angle steels. The lattice columns 5 are arranged at equal intervals. The latticed column base is arranged on the tunnel top plate, and the supporting height difference between the top plate and the construction surface 1 is made up. The beam 3 of the end well region needs to be cut off, the original operation is completely cut off, the utility model reserves the part of the end part of the beam 3, the lattice columns 5 can be arranged at the upper part and the lower part of the cut-off end, the position can use short lattice, and the material is saved.

The section of the I-shaped steel beam 8 is in a shape like a Chinese character ya. The end well 2 can be a through long one or two combined. The I-shaped steel beam 8 forms a track beam mounting surface which is flush with the construction surface 1 of the well area of the end, and connects the construction surfaces on two sides of the end well 2. The bottom of the track beam 7 of the spanning section is cast with the I-shaped steel beam 8 into a whole through concrete. The section of track beam and the I-shaped steel beam 8 can be integrally used in a turnover mode, and can also be detached and respectively moved.

The utility model is compared with the prior art in various aspects, and the superiority of the utility model is fully reflected:

firstly, the suspended section adopts a concrete track beam, is heavy in weight, cannot be reused and needs to be broken off subsequently. The utility model is in a detachable fixed mode, not only does not need to be broken but also can be repeatedly used.

And secondly, the bottom of the self-made steel box girder is a track girder of the bailey truss, the steel box girder is welded by adopting steel plates, the mechanical properties of different shapes of the steel box girder depend on the reasonability of the space structure and the quality of a welding seam, and the elevation of the bottom is difficult to be reasonably adjusted on site. Compared with the prior art, the utility model has the advantages that the mechanical property and the strength are guaranteed, the standardized production is facilitated, the processing is easy, the repeated use is convenient, the material can be better saved when the rest latticed columns of the station are adopted as the support, and the elevation can be adjusted according to the field condition.

The novel beneficial effect of this technique is: the utility model is convenient for constructors to operate, can be applied in a standardized way, has high mechanical strength, can be repeatedly used, and finally improves the construction efficiency and reduces the cost. The method has the advantages of universal applicability, wide popularization and application, guaranteed mechanical strength, repeated use condition, convenience in construction and capability of effectively reducing cost.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined in the appended claims.

Claims

1. The utility model provides a subway tunnel end well area gantry crane track roof beam mounting structure, end well area construction face (1) are fixed with ground track roof beam (6), its characterized in that: a plurality of latticed columns (5) are arranged in the range of the end well (2) along the extension direction of the ground track beam (6); the top of each lattice column (5) is provided with an I-shaped steel beam (8), and the top surface of the I-shaped steel beam (8) and the construction surface (1) are in the same horizontal plane; the top surface of the I-shaped steel beam (8) is fixedly connected with a spanning section track beam (7), and the spanning section track beam (7) is connected with ground track beams (6) on two sides of the end well (2).

2. The subway tunnel end well region gantry crane track beam mounting structure of claim 1, wherein: the bases of the lattice columns (5) are fixed on the top plate of the tunnel and the end parts of the cross beams (3).

3. The subway tunnel end well region gantry crane track beam mounting structure of claim 2, wherein: the lattice columns (5) are composed of four angle steels and connecting plates uniformly welded on the outer sides of the angle steels, and the lattice columns (5) are arranged at equal intervals.

4. The subway tunnel end well region gantry crane track beam mounting structure of claim 1, wherein: the section of the I-shaped steel beam (8) is in a shape like a Chinese character ya.

5. The subway tunnel end well region gantry crane track beam mounting structure as claimed in claim 1, wherein: the bottom of the track beam (7) at the spanning section is cast with the I-shaped steel beam (8) into a whole through concrete.