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Lifting construction method for arch rib segments of steel box handle-basket arch bridge

A technology of basket arch bridge and hoisting method, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of wasteful equipment configuration and low efficiency, and achieve the effects of improving construction efficiency, reducing scale, and reducing instantaneous risks

Active Publication Date: 2012-10-17
CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to solve the problems of low efficiency and relatively wasteful equipment configuration

Method used

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  • Lifting construction method for arch rib segments of steel box handle-basket arch bridge
  • Lifting construction method for arch rib segments of steel box handle-basket arch bridge
  • Lifting construction method for arch rib segments of steel box handle-basket arch bridge

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Embodiment Construction

[0025] The hoisting method of the arch rib segment of the steel box basket arch bridge provided by Fangming is realized by using two sets of horizontally adjustable spreaders. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] The hoisting construction method of the arch rib segment of the steel box basket arch bridge provided by the present invention comprises the following steps:

[0027] (1) Hoisting preparations, set the front and rear two sets of lifting points 4, 3 on the arch rib segment 5, and connect with the front and rear two sets of horizontally adjustable spreaders 1 respectively.

[0028] See figure 1 , 3 , 4. The rear set of lifting points 3 is set on the top plate of the arch rib segment 5, and the front set of lifting points 4 is set on the inner side of the web at the opening section of the arch rib segment 5. The front and rear sets of lifting points include two lifting points point, and the dist...

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Abstract

The invention discloses a lifting construction method for arch rib segments of a steel box handle-basket arch bridge. The method comprises the following steps of: setting g two groups of front and rear lifting points on the arch rib segments, and connecting the lifting points and two groups of front and rear horizontal adjustable lifting appliances respectively; lifting the arch rib segments by the two groups of front and rear horizontal adjustable lifting appliances, and adjusting the longitudinal inclined angles of the arch rib segments to the design positions before the arch rib segments are separated from ground or a deck; and continuously lifting the arch rib segments by the two groups of front and rear horizontal adjustable lifting appliances, and adjusting the horizontal inclined angles of the arch rib segments to the design position in the air. According to the method, lifting hooks and the lifting appliances are stressed uniformly and changed slightly in the whole lifting process, the arch rib segments do not swing in a horizontal direction in the lifting process, the construction risk is reduced, and investment in equipment is reduced; and the longitudinal and horizontal inclined angles can be adjusted in the air, and the construction efficiency can be improved.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a hoisting construction method for the arch rib segment of a steel box basket arch bridge. Background technique [0002] The steel box basket arch bridge is a kind of bridge structure with strong spanning ability, beautiful appearance and more and more applications. Box arch ribs, as the main force-bearing structure of this type of bridge structure, are generally installed by segmental hoisting. Lifting machinery generally adopts cable cranes, crawling cranes or crane ships. During the hoisting process, it is necessary to adjust the arch rib segment from the straight transportation state to the alignment installation state with inclination angles in both vertical and horizontal directions. There are generally two methods that can be used: [0003] The first is to turn the arch rib segment to the required inclination angle on land by using an auxiliary crane or a crane ship, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
Inventor 涂满明李军堂汪芳进王令侠王东辉许佳平王超英张静张爱花
Owner CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD
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