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Method for erecting precast beam of super-wide bridge deck at narrow space by using high-low leg gantry crane

A technology of prefabricated beams and leg doors, applied in the direction of erecting/assembling bridges, bridges, bridge construction, etc., to achieve the effect of ensuring safety

Inactive Publication Date: 2017-04-19
SHANGHAI FOUND ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem of erecting prefabricated beams in cramped spaces, and provides a method for erecting prefabricated beams with super-wide bridge decks in cramped spaces with high and low leg door hangers

Method used

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  • Method for erecting precast beam of super-wide bridge deck at narrow space by using high-low leg gantry crane
  • Method for erecting precast beam of super-wide bridge deck at narrow space by using high-low leg gantry crane
  • Method for erecting precast beam of super-wide bridge deck at narrow space by using high-low leg gantry crane

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Embodiment Construction

[0030] The implementation manner of the present invention will be further described below in combination with specific examples.

[0031] The present invention is aimed at the difficult point of the prefabricated beam transportation and erection method, and the measures are:

[0032] (1) Determine the foundation of the door crane according to the topography and geological conditions of the site, and strictly control the quality of the foundation.

[0033] (2) The height and load of the outriggers of the gantry crane are calculated according to the actual situation and processed accurately, and the elevation of the combination (outrigger + traversing track, outrigger of the gantry crane + beam of the gantry crane) matches the elevation of the bridge deck.

[0034] (3) Accurately install the outriggers of the door crane and the traversing track to meet the space in the passageway between the lifting beam of the bridge erecting machine and the beam transporting vehicle, and ensur...

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Abstract

The present invention relates to a method for erecting a precast beam of a super-wide bridge deck at a narrow space by using a high-low leg gantry crane. The method comprises the concrete steps of installing a traversing type bridge-erecting machine and the high-low leg gantry crane at a beam hoisting area, erecting the precast beam at the beam hoisting area through the traversing of the bridge-erecting machine, completing the erection of the precast beam at the beam hoisting area, and erecting the precast beam in a beam-on-beam conveyance way. By applying the method, the problems of conveyance and erection of precast beams at narrow spaces can be well solved, the safety in the conveyance and erection processes of precast beams is guaranteed, and the working efficiency is greatly improved. The method in which the high-low leg gantry crane and the traversing type bridge-erecting machine are matched for construction is applied to complex terrains and narrow spaces for the first time, and the successful experience can guide the engineering construction under the type conditions.

Description

technical field [0001] The invention relates to a method for erecting a prefabricated beam in a cramped space, in particular to a method for installing a prefabricated beam for an ultra-wide bridge deck in complex terrain. Background technique [0002] At present, in the design of cities and highway bridges, prefabricated beams have been widely used. However, bridges in our country are developing at a leaping speed, including cities and mountainous areas. The traffic reconstruction and landscape project from Daxikou to Nanguang in Yibin City is close to the Yangtze River and belongs to the second-level terrace of the Yangtze River, which is an erosion accumulation terrain. The area of ​​the second-order terrace of the Yangtze River is extremely small near the project area. This project is mainly composed of underground interchanges and viaducts, forming a form of bridge-tunnel connection. The widest part of the viaduct deck reaches 68m. Due to the narrow site and complex t...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 王琼金仁兴王伟
Owner SHANGHAI FOUND ENG GRP
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