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Temporary cross brace of a space cable suspension bridge and its hoisting construction method

A suspension bridge and cable technology, which is applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as interfering with waterway traffic, achieve clear component stress, reduce construction risks, and facilitate construction

Inactive Publication Date: 2015-12-02
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Another object of the present invention is to provide a hoisting construction method for the space cable suspension bridge, which overcomes the defect that existing construction methods interfere with channel traffic

Method used

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  • Temporary cross brace of a space cable suspension bridge and its hoisting construction method
  • Temporary cross brace of a space cable suspension bridge and its hoisting construction method
  • Temporary cross brace of a space cable suspension bridge and its hoisting construction method

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Embodiment

[0058] This embodiment provides a temporary cross brace for a space cable suspension bridge, including a cross beam 1 and a temporary cable clamp 2 for pulling and moving the main cable. It is characterized in that: the cross beam 1 includes three parallel trusses 1-1, each truss -1 includes the upper chord 1-2, the lower chord 1-3, the vertical bar 1-4 and the inclined bar 1-5, and the three trusses 1-1 are connected by the cross bar 1-6 and the side slanting bar 1-7. overall;

[0059] The two ends of the bottom of the beam 1 are respectively provided with an operating platform 3, and the bottom of the beam 1 between the two operating platforms 3 is symmetrically installed with two stop frames 4 and two counter force frames 5, and the two stop frames 4 are close to the center of the beam 1 The position is symmetrically installed at the bottom of the beam 1, and the distance between the two stop frames 4 is smaller than the distance between the two main cables 6 when the space...

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Abstract

The invention provides temporary cross bracings of a space cable suspension bridge and a lifting-constructing method of the temporary cross bracing. The lifting-constructing method comprises the following steps: firstly, mounting a main cable; secondly, mounting trusses at positions of mid-span, one-fourth span, and three-fourths span to form a developed bridge space cable surface for supporting cables; thirdly, mounting cable clamps and suspension cables; finally, lifting and mounting a steel box girder. According to the method of the invention, the constructing method is adopted, that is, the main cable is erected firstly, and then a stiffening girder is lifted and mounted, so that the navigation requirement during a constructing period can be ensured and the disadvantage of erecting a temporary support can be overcome; through arranging truss cross bracings, the main cable is transited from a cable horizontal alignment shape to a developed bridge space cable shape; the cable clamps does not need to be pre-deflected in a horizontal bridge direction; all that is needed is to mount the cable clamps according to the inclined angle formed by that the suspension cables are perpendicular to a down bridge direction under the condition of the developed bridge so as to ensure that the parts between the ear plates of the cable clamps and the ear plates of the suspension cables do not bend during the lifting and mounting process of the steel box girder.

Description

technical field [0001] The invention belongs to the field of bridges, and relates to a space cable suspension bridge, in particular to a temporary cross brace of a space cable suspension bridge and a hoisting construction method thereof. Background technique [0002] Traditional suspension bridges are generally planar cable-shaped ground-anchored suspension bridges, including main cables, suspension cables, stiffening beams, main towers, and main cable anchoring components. The main cable and the sling are located in the same vertical plane to form a cable plane, that is, the main cable has only vertical sag but no lateral sag, and all slings are hung vertically without transverse inclination. Traditional suspension bridges often consist of two parallel cable planes. The traditional suspension bridge adopts hoisting construction, that is, the method of "cable first and girder later". The upper end of the sling is connected to the cable clamp; ④ Hoist the stiffening beam, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
Inventor 王晓明李红玉陈峰胡明杨纪鹏甄宁胡泽峰
Owner CHANGAN UNIV
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