Single-line single-span railway steel truss girder dragging installation construction method and single-line single-span railway

A construction method and technology of steel truss girders, which are applied in the direction of bridges, truss bridges, bridge construction, etc., can solve the problems of long construction period and high safety risks of bridges, and achieve the effect of precise positioning

Inactive Publication Date: 2021-01-05
CHINA RAILWAY NO 9 GRP NO 7 ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a single-line single-span railway steel truss girder drag installation construction method and a single-line single-span railway, which solves technical problems such as long construction period of bridges and high safety risks

Method used

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  • Single-line single-span railway steel truss girder dragging installation construction method and single-line single-span railway
  • Single-line single-span railway steel truss girder dragging installation construction method and single-line single-span railway
  • Single-line single-span railway steel truss girder dragging installation construction method and single-line single-span railway

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Embodiment 1

[0213] Embodiment 1: certain railway construction.

[0214] Construction started in August 2019 and was completed on December 20, 2019. The angle between the project and the railway is 42°, the total length is 190.72m, and the span is set as 1-32mT beam + 1-108m steel truss beam 1+1-32mT beam. The second hole is located at DK5+397.53, DK5+449.67, and DK5+457.13 mileage respectively. There are single-line and double-line, and the steel truss beam 1 structure with a span of 108m is adopted.

[0215] The invention effectively shortens the construction period, saves the construction cost, ensures the safety of railway operation and improves the engineering quality.

[0216] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature define...

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Abstract

The invention relates to a single-line single-span railway steel truss girder dragging installation construction method. The method comprises the following construction steps of S1, temporary supportand slide way girder installation, including behind-abutment roadbed section temporary support and slide way girder installation, inter-abutment temporary support and slide way girder installation, inter-pier temporary support and slide way girder installation and pier side temporary support and slide way girder installation; S2, front guide beam and steel truss girder behind-abutment assembling;S3, manufacturing and installing of a sliding block, including arrangement of the sliding block at a lower chord part between the large sections of the steel truss girder; S4, manufacturing and installing of a dragging device, including manufacturing and installing of a jack dragging horizontal counter-force seat, manufacturing and installing a rear anchoring device and penetrating and dragging ofa steel strand bundle; S5, dragging of a part of the steel truss girder; S6, dismounting of the temporary support, including dismounting of the sliding block and dismounting of the support; and S7, beam falling in place. The invention further relates to a single-line single-span railway obtained through the construction method. The construction method is advanced, engineering quality, safety andcontrollability are achieved, and the construction period is effectively shortened.

Description

technical field [0001] The invention relates to the technical field of bridges spanning railway lines, in particular to a single-line single-span railway steel truss girder drag installation method and a single-line single-span railway. Background technique [0002] Modern bridges are gradually developing towards long-span economical bridges, especially bridges that span railway lines. Concrete continuous beam cantilevered and swivel construction methods are used intensively. However, the construction period is long and the safety risk is high. Costs and other aspects also have a certain impact. Contents of the invention [0003] (1) Technical problems to be solved [0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a single-line single-span railway steel truss girder drag installation construction method and a single-line single-span railway, which solve technical problems such as long construction period...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D6/00
CPCE01D21/00E01D6/00
Inventor 董光王振东李振兵葛润广陈岩杨胜楠杨晓宇徐涛陈云飞郑玉强侯经宇彭红岩刘利
Owner CHINA RAILWAY NO 9 GRP NO 7 ENG CO LTD
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