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Existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction

A frame bridge, high-height technology, applied in the field of frame bridge jacking construction line reinforcement, can solve problems such as the small angle between the frame bridge axis and the existing line, the formation of triangular pits on the line, and the lateral movement of the line, so as to reduce the workload and improve the The effect of work efficiency and high practicability

Inactive Publication Date: 2012-02-22
RAILWAY NO 10 ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a method for reinforcing the line by using various shaped steels and pile foundations, which effectively solves the problem of small angle between the axis of the frame bridge and the existing line, high frame, lateral movement of the line, and triangular pit formation on the line. , affecting driving safety and other issues

Method used

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  • Existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction
  • Existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction
  • Existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction

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Embodiment Construction

[0020] The technical scheme of the present invention is described below in conjunction with accompanying drawing and embodiment:

[0021] The invention is aimed at the existing line reinforcement method for oblique jacking construction with a small included angle and a large height of a railway frame bridge passing under it. For example, if two railway lines intersect, the existing line is a single-track railway, and the front and rear of the intersection are located on the right-handed curve with a radius of 4500m. The intersection angle between the underpass frame bridge and the existing line is 31°06′; the frame bridge is a 1-11m reinforced concrete oblique intersection The frame bridge is being built, the total height of the box is 12.80m, the front section width is 13.60m, the oblique width along the existing line is 26.33m, the transverse length is 41.50m, and the design net height of the frame bridge is 10.5m.

[0022] The present invention adopts the combination of han...

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Abstract

The invention discloses an existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction. The method comprises the following steps of: reinforcing an existing line by using an overhead rail (9) along the line, and supporting the existing line by using a plurality of horizontal lifting beams (5) which are vertical to the line direction at certain intervals below the existing line, and using manual hold digging piles (1) on the lower left and right of the horizontal lifting beams (5) as support points of the horizontal lifting beams on two sides of the line; laying a steel slideway (6) between a frame top (8) and the horizontal lifting beams (5) along the jacking direction; meeting the requirements of a longitudinal slope and a cross slope of the line by using wedge-shaped wood (12) between a sleeper (20) and the horizontal lifting beams (5); and before the hole digging piles are broken, transferring the load of the pile top to the frame top (8) through the steel slideway (6), and circularly breaking the piles and jacking. By the method, the vertical and horizontal rigidity of the line are enhanced, the stability of the line during jacking is ensured, the workload for manually maintaining the line is reduced, and the driving safety is ensured.

Description

technical field [0001] The invention relates to a reinforcement method for a frame bridge jacking construction line, in particular to an existing line reinforcement method for preventing the lateral displacement of the line, enhancing the vertical stiffness of the line, and ensuring that the driving of the frame bridge passing under the railway is not affected when the line is jacked. Background technique [0002] For the existing line reinforcement method of the small included angle and large-height oblique jacking construction of the railway frame bridge passing under it, the traditional method is to erect a convenient beam. For a long frame bridge, the convenient beam cannot meet the span requirements; the traditional method also includes: Use general suspension rails and horizontal lifting beams to reinforce the line. Due to the large angle between the horizontal lifting beam and the jacking direction of the frame, one end of the horizontal lifting beam will rotate or fli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01B29/40
Inventor 杨基好宋善岭房瑞泉陈广彩武尊杨何磊康达观李怀贺
Owner RAILWAY NO 10 ENG GRP CO LTD
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