CN209835438U - Subway station enlarges section gantry crane track roof beam - Google Patents

Abstract

The utility model provides a subway station enlarges section gantry crane track roof beam. The gantry crane track beam comprises a steel box beam and concrete supports arranged at two ends of the steel box beam, the steel box beam is a box body structure formed by welding steel plates, the height of two end parts of the box body structure is smaller than that of the middle part of the box body structure, and the steel box beam is arranged above the crown beam expanding section and corresponds to a horizontal extension line of the reinforced concrete track beam; the concrete supports arranged at the two ends of the steel box girder are square reinforced concrete piers which are arranged above the top beam expansion section when the top beam is arranged, a steel plate is embedded in the top surface of each concrete support, the two lower ends of the steel box girder are respectively arranged on the concrete supports and fixedly connected with the steel plates, and the two ends of the fixedly arranged steel box girder are respectively butted with the reinforced concrete track girders at the two sides of the top beam expansion section. The utility model discloses overall structure installation is simple, economical and practical, and stability is effectual, and easily processing is executed and is done swiftly, saves the scene and assembles, effectual time space of saving.

Description

Subway station enlarges section gantry crane track roof beam

Technical Field

The utility model relates to a subway station enlarges section gantry crane track roof beam is a subway station enlarges section gantry crane track roof beam.

Background

Under the promotion of the rapid development of the economy, various talents are continuously introduced into various big cities, the population of the cities is continuously increased, the traffic pressure is aggravated, the urban underground rail transit in China is rapidly developed at present, and the utilization rate of underground spaces is continuously improved. With the improvement of living standard, urban residents have higher requirements on the quality (speed, flexibility, comfort and safety) of travel. The subway is used as an important transportation tool for relieving the travel pressure of residents in modern cities, and has huge development potential and extremely wide prospect. The convenient and fast subway becomes the preferred transportation tool for the resident to go out.

In the modern development and construction of various cities, the construction of subways is planned in a large scale. The open-cut and smooth method is adopted in the stations, and a shield method is also mostly adopted in the construction of tunnels between subway stations, so that expanded sections for shield starting or receiving are required to be arranged at two ends of the stations. The shield method is the most important technology for subway tunnel construction, the shield machine tunnels in the stratum, segments are assembled, the segments are connected into a whole by using segment bolts, the surrounding soil body is supported by a shield shell and the segments, the gap between the surrounding soil body and the segments is subjected to grouting treatment, meanwhile, a shield cutter head rotates to cut the front soil body, and the front soil body is conveyed out of a tunnel by a belt conveyor and horizontal conveying equipment. As the shield tunnel construction uses more materials such as tracks, pipe pieces and the like, the shield project needs to be constructed with track beams and gantry cranes for hoisting the materials.

The expanded section track beam adopted by the existing shield project generally adopts a Bailey frame, and is subjected to processes of assembling, reinforcing and the like on site one by one, so that a large amount of manpower and material resources are consumed, the assembling time is long, the stability is poor, and the cost is high. After the whole project is finished, the whole project needs to be disassembled one by one, and the process is complicated.

Disclosure of Invention

The utility model discloses not enough according to prior art provides a subway station that construction is swift, simple to operate's subway station enlarges section gantry crane track roof beam, and this track roof beam construction is simple, and rigidity is high, and stability is good, and it is convenient to dismantle, effectual reduction of erection time, sparingly construction site, reduce cost.

In order to solve the problems existing in the prior art, the utility model provides a technical scheme: the subway station enlarges a section gantry crane track roof beam, its characterized in that: the gantry crane track beam comprises a steel box beam and concrete supports arranged at two ends of the steel box beam, the steel box beam is a box body structure formed by welding steel plates, the height of two end parts of the box body structure is smaller than that of the middle part of the box body structure, and the steel box beam is arranged above the crown beam expanding section and corresponds to a horizontal extension line of the reinforced concrete track beam; the concrete supports arranged at the two ends of the steel box girder are square reinforced concrete piers which are arranged above the top beam expansion section when the top beam is arranged, a steel plate is embedded in the top surface of each concrete support, the two lower ends of the steel box girder are respectively arranged on the concrete supports and fixedly connected with the steel plates, and the two ends of the fixedly arranged steel box girder are respectively butted with the reinforced concrete track girders at the two sides of the top beam expansion section.

The utility model discloses better technical scheme: the gantry crane track beam comprises two track beams symmetrically arranged above the crown beam expanding section, and each track beam consists of a steel box beam and two concrete supports embedded with steel plates; and after the two steel box girders are installed, two ends of the two steel box girders are respectively butted with the reinforced concrete track girders which are not arranged above the crown beam expanding section to form two complete track girders.

The utility model discloses better technical scheme: the width of the steel box girder is 550mm, and the middle web plate is connected with the lower parts of the two ends by inclined plates.

The utility model discloses better technical scheme: the strength grade of the concrete support is C30, and the length and width of the concrete support are 1400 x 1100 mm; the length of the two lower end parts of the steel box girder is equal to that of the concrete support, and the sum of the height of the two lower end parts of the steel box girder and the height of the concrete support embedded with the steel plate is equal to the height of the reinforced concrete track girder on the upper part of the non-expanded section of the crown girder.

The utility model discloses better technical scheme: the steel plates pre-embedded on the concrete support are 1100 × 1400 × 10mm in size.

The utility model discloses better technical scheme: and the steel box girder and the steel plate pre-embedded on the concrete support are fully welded and fixed by adopting a C50 welding rod.

The steel box girder is adopted to replace the assembled Bailey truss as the track girder of the crown beam expansion section, and is welded with the steel plate pre-embedded in the concrete support and then fixed on the reinforced concrete support integrally constructed with the crown beam, so that the fixing effect is ensured, and the stability is good; the size of the steel box girder can be completed in advance according to needs, the length of the steel box girder is determined according to the size condition of an enlarged section of a subway station, and the steel box girder is pulled to a site to be directly erected and reinforced for use; the whole structure is simple to install, economical and practical, good in stability effect, easy to process, fast to apply and assemble, and time and space are effectively saved.

Drawings

FIG. 1 is a plan view of the present invention with two track beams;

FIG. 2 is a cross-sectional view AA of FIG. 1;

fig. 3 is a schematic structural view of the steel box girder of the present invention.

In the figure: 1-concrete support, 2-steel box girder, 200-middle web plate, 201-end part, 202-inclined plate, 3-crown beam expanding section, 4-steel plate, 5-reinforced concrete track beam and 6-crown beam non-expanding section.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. The following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The present invention will be further explained with reference to the accompanying drawings. As shown in fig. 1 and 2, the simple and convenient gantry crane track beam for the station expanded section is a simple and convenient gantry crane track beam for the subway expanded section, which is composed of a concrete support 1, a steel box beam 2, a crown beam 3, a steel plate 4 and a connecting concrete track beam 5. The concrete support 1 and the crown beam 3 are formed by pouring C30 common concrete, the steel plate 4 is embedded in the upper surface of the concrete support, the steel box beam 2 and the steel plate 4 are connected by welding, and the track is also connected by welding on the steel box beam.

The embodiment provides a subway station expansion section gantry crane track beam, which is shown in fig. 1 and 2 and comprises two track beams symmetrically arranged above a crown beam expansion section 3, wherein each track beam is composed of a steel box beam 2 and two concrete supports 1 embedded with steel plates 4. Two concrete supports 1 of each track beam are arranged at two ends of a steel box beam 2. As shown in fig. 3, the steel box girder 2 is a box structure formed by welding steel plates, wherein the heights of two end parts are less than the height of a middle part, and the end parts 201 are connected with a middle web 200 by inclined plates 202. As shown in fig. 1 and 2, the steel box girder 2 is erected on a horizontal extension line of each reinforced concrete track girder 5 in the direction of the crown beam expanding section 3; the concrete supports 1 are square reinforced concrete piers formed by pouring C30 common concrete together when the crown beam is constructed, a steel plate 4 is embedded in the top surface of each concrete support 1, two lower end parts of the steel box beams 2 are respectively arranged on the concrete supports 1 and are fixedly connected with the steel plates 4 by adopting C50 welding rods in a full-welding mode, and after the two steel box beams 2 are installed, two ends of the two steel box beams are respectively butted with the reinforced concrete track beam 5 which is not arranged above the crown beam expanding section 3 to form two complete track beams.

In the embodiment, the width is 400mm and the height is 1200mm according to the construction of the retaining wall on the station crown beam as the track beam 5, the height 560mm and the width 550mm of the two ends of the steel box beam 2 are considered, the width 1400mm of the crown beam 3 is considered, the height of the concrete support 1 is 640mm, the length and the width are 1400 x 1100mm, the size of the steel plate 4 is 1100 x 1400 x 10mm, and the steel box beam 2 and the steel plate 4 are welded by adopting C50 welding rods. The concrete construction process is as follows: firstly binding support reinforcing steel bars together during construction of a station expansion section crown beam, embedding a steel plate 4 at the top of the support reinforcing steel bars in advance before concrete pouring, performing elevation control, pouring support concrete at one time, controlling the height of a support according to the height of a ground track beam and a steel box beam, and exposing the top surface of the steel plate 4 out of the support after the concrete pouring; and the length of the steel box girder 2 is customized according to the length of the station expanded section, the steel box girder can be transported to the site after being processed, the steel box girder and the steel plate are directly installed on the two concrete supports 1 on the corresponding sides and are welded and fixed with the steel plate 4, and finally, a track is installed on the steel box girder 2 and the reinforced concrete track girder 5 above the crown beam non-expanded section 6.

Claims (6)

1. The utility model provides a subway station enlarges section gantry crane track roof beam which characterized in that: the gantry crane track beam comprises a steel box beam (2) and concrete supports (1) arranged at two ends of the steel box beam (2), the steel box beam (2) is a box body structure formed by welding steel plates, the heights of two end parts of the box body structure are smaller than the height of the middle part of the box body structure, and the steel box beam (2) is erected on a horizontal extension line, corresponding to the reinforced concrete track beam (5), above the crown beam expanding section (3); concrete supports (1) arranged at two ends of a steel box girder (2) are square reinforced concrete piers which are applied above a crown girder expanding section (3) together when the crown girder is applied, a steel plate (4) is embedded in the top surface of each concrete support (1), two lower-height ends of the steel box girder (2) are respectively arranged on the concrete supports (1) and are fixedly connected with the steel plates (4), and two ends of the fixedly installed steel box girder (2) are respectively butted with reinforced concrete track girders (5) at two sides of the crown girder expanding section (3).

2. The subway station expanded section gantry crane track beam as claimed in claim 1, wherein: the gantry crane track beam comprises two track beams symmetrically arranged above the crown beam expanding section (3), and each track beam consists of a steel box beam (2) and two concrete supports (1) embedded with steel plates (4); and after the two steel box girders (2) are installed, the two ends of the two steel box girders are respectively butted with the reinforced concrete track girder (5) which is not arranged above the crown girder expanding section (3) to form two complete track girders.

3. The subway station expanded section gantry crane rail beam as claimed in claim 1 or 2, wherein: the width of the steel box girder (2) is 550mm, and a web plate (200) in the middle of the steel box girder is connected with two end parts (201) with lower height by adopting inclined plates (202).

4. The subway station expanded section gantry crane rail beam as claimed in claim 1 or 2, wherein: the strength grade of the concrete support (1) adopts C30, and the length and width of the concrete support are 1400 x 1100 mm; the length of the two lower end parts of the steel box girder (2) is equal to that of the concrete support (1), and the sum of the height of the two lower end parts of the steel box girder and the height of the concrete support (1) embedded with the steel plate is equal to that of the reinforced concrete track girder (5) at the upper part of the non-expanded section (6) of the crown girder.

5. The subway station expanded section gantry crane rail beam as claimed in claim 1 or 2, wherein: the steel plate (4) pre-embedded on the concrete support (1) is 1100 × 1400 × 10mm in size.

6. The subway station expanded section gantry crane rail beam as claimed in claim 1 or 2, wherein: and the steel box beam (2) and the steel plate (4) pre-embedded on the concrete support are fully welded and fixed by adopting a C50 welding rod.