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A method for removing hanging baskets of single-cable-plane cable-stayed bridges

A cable-stayed bridge, single-cable surface technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as the removal of hanging baskets

Active Publication Date: 2019-06-18
HENAN HIGHWAY ENG GROUP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the hanging basket cannot be removed safely and effectively after closing the bridge in the bridge construction on the main canal of the South-to-North Water Diversion Project. , The construction method of removing the hanging basket of the single-cable cable-stayed bridge that successfully removes the hanging basket

Method used

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Experimental program
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Embodiment

[0023] Embodiment: A construction method for removing hanging baskets of a single-cable-plane cable-stayed bridge, comprising the following steps:

[0024] (1) Hanging basket modification, hanging basket modification includes the following steps:

[0025] (1.1) Lay 4 running tracks on the top of the box girder: drill holes on the top of the box girder, fix the track with rail nails, and use mortar pads to flatten the track to form a new walking track; the track uses 43 steel rails, and the track nails The spacing is 40~60cm;

[0026] (1.2) Renovation of the suspension system of the hanging basket: one 20t hand chain hoist is installed on each side of the four JL40 fine-rolled rebar suspenders on the outside of the box girder to lower the bottom basket of the hanging basket; four JL40 The upper suspension points of the fine-rolled rebar suspenders are all set on both sides of the front and rear beams of the hanging basket, and the lower suspension points are all set on the out...

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Abstract

The invention discloses a construction method for removing a hanging basket of a single-cable-plane cable-stayed bridge, comprising the following steps: (1) refitting the hanging basket; (2) moving the refitted hanging basket back to a planned position; (3) removing the hanging basket. On the basis of not changing the existing prestressed concrete continuous girder bridge mainly using hanging basket cantilever construction and ensuring the water quality of the South-to-North Water Diversion Project, the hanging basket truss, suspension system and walking system are refitted so that the hanging basket can be returned When the construction method of the present invention is used to construct a single-cable-plane cable-stayed bridge across the main canal of the South-to-North Water Diversion Project, the hanging basket can be safely, quickly and effectively moved to the outside of the main canal for demolition. It will drop any debris and impurities into the South-to-North Water Diversion River, and will not have any impact on the water quality of the South-to-North Water Diversion Project, which meets the relevant national requirements for the construction of bridges across the South-to-North Water Diversion Project.

Description

technical field [0001] The invention relates to a construction method for removing hanging baskets of a single-cable-plane cable-stayed bridge, which belongs to the field of bridge construction. Background technique [0002] Hanging basket construction refers to the use of the hanging basket method when pouring cantilever beam bridges with large spans, and cantilever operations in sections on the spot. The hanging basket is a load-bearing structure that can slide or roll along the top of the beam. It is anchored and suspended on the front end beam section that has been constructed. The formwork, steel bars, and prestressed pipes of the next beam section are installed on the hanging basket, and concrete pouring After completing a stage cycle with prestressed tensioning and grouting, the hanging basket is moved forward and fixed, and the pouring of the next section is carried out, and the cycle is completed until the cantilever pouring is completed. However, in general cantil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 耿丙彦李青李志华周合宽李昊魏道平谢琳楚发强靳俊中李林涛张晓军舒建辉拓宁博高渐斌范悦让崔晓康毛素兰王奥
Owner HENAN HIGHWAY ENG GROUP
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