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Double-L type pipe-roofing structure control box bridge jacking method

A technology for structural control and frame-constructed bridges, which is applied to underwater structures, infrastructure engineering, bridges, etc., and can solve problems such as uneven operation of railway lines, large soft soil foundations, and entanglements

Active Publication Date: 2016-06-29
SHENYANG RAILWAY SURVEY DESIGN CONSULTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems existing in the prior art that during jacking construction, the soft soil foundation can easily cause a large pinch phenomenon, and the side skylights on both sides of the frame bridge are large during jacking, which will lead to uneven operation of the existing railway line technical issues

Method used

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  • Double-L type pipe-roofing structure control box bridge jacking method
  • Double-L type pipe-roofing structure control box bridge jacking method

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Embodiment 1

[0033] In order to further illustrate the present invention, each step of the present invention is described in detail through the following examples.

[0034] The following is a construction embodiment of a 2-12m frame bridge of the present invention passing through the Shenyang-Dalian railway line (5-strand line):

[0035] The axis of the frame bridge is 41.50 meters long, the axis of the bridge is perpendicular to the railway line, and there are 5 railway lines at the jacking point. The net width of the frame bridge is 2-12m, the overall width of the vertical section is 26.6m, and the bridge height is 7.57m. The base of the frame bridge is located on the silty clay layer with a basic bearing capacity of 115kPa. The groundwater level is relatively high, and the arrangement of the drainage well is difficult. In addition, the structural axis is long, and it is easy to cause large piers and excessively large skylights during jacking. Therefore, before the jacking operation of ...

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Abstract

The invention provides a double-L type pipe-roofing structure control box bridge jacking method. Firstly, L type pipe roofs at two sides are jacked, and secondly, a box bridge is jacked, so that a formed double-L type pipe roof is slidden in a slideway space, the jacking operation can be safely and accurately finished, and the technical problem that the operation of existed railway lines is not smooth due to the larger buncning tip phenomenon easily caused by a soft soil foundation during the jacking operation and larger side skylights at two sides of the box bridge during jacking existed in the prior art is solved.

Description

technical field [0001] The invention belongs to the field of railway and highway construction, and mainly relates to a construction technology of a pipe-curtain slideway structure suitable for weak foundations. Background technique [0002] In recent years, with the acceleration of urbanization, the number of urban populations has increased day by day, and the urban traffic volume has increased exponentially. The need to replace the original tunnel bridge with a new frame bridge also arises. When the groundwater level is high, When the arrangement of dewatering wells is difficult and the axial length of the structure is long, the existing construction methods will have the following problems: 1. During the jacking construction, the soft soil foundation will easily cause a large pinching phenomenon; 2. When jacking, the frame The side skylights on both sides of the bridge are relatively large, which will lead to irregular operation of the existing railway line. In view of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E02D29/045
CPCE01D21/00E02D29/045
Inventor 韩勋韩超臧立秋李铁男赵治冶耿波苗明臣赵志文汤朝晖
Owner SHENYANG RAILWAY SURVEY DESIGN CONSULTING CO LTD
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