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Quick construction method of two-tower five-span steel truss girder cable-stayed bridge

A construction method and technology of steel truss girder, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of slow construction, affecting the closing accuracy and alignment of cable-stayed bridges, etc., to achieve rapid construction, saving construction costs, shortening The effect of the construction period

Active Publication Date: 2011-07-13
CHINA RAILWAY NO 3 GRP CO LTD +2
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Problems solved by technology

[0003] In order to solve the problem that the construction of the existing double-tower five-span steel truss girder cable-stayed bridge adopts the symmetrical cantilever method, the construction is slow and the closing gaps affect the closing accuracy and alignment of the cable-stayed bridge, and provides a double-tower five-span steel truss girder Rapid construction method of cable-stayed bridge

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  • Quick construction method of two-tower five-span steel truss girder cable-stayed bridge

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Embodiment Construction

[0029] A rapid construction method for a double-tower five-span steel truss girder cable-stayed bridge, the two main tower columns of the constructed twin-tower five-span steel truss girder cable-stayed bridge are composed of pile foundation 7, cap 8, tower Seat 9, lower tower column 2, lower beam 14, middle tower column 3, upper beam 17 and upper tower column 4, side pier 5 and auxiliary pier 6 are symmetrically arranged on one side of the two main tower columns, side pier 5 And the auxiliary pier 6 is supported with a side span 11, the auxiliary pier 6 and the main tower column are supported with an auxiliary span 19, and the two main tower columns are supported with a middle span 22; the method includes the following steps:

[0030] 1. First, the same method is used to construct the two main tower columns at the same time. The main tower column is poured in sections. At the same time, the steel truss beam is constructed by a single cantilever assembly method from the side sp...

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Abstract

The invention belongs to the technical field of steel truss girder cable-stayed bridge construction in bridge engineering, in particular relating to a quick construction method of a two-tower five-span steel truss girder cable-stayed bridge. By utilizing the quick construction method, the problems that the construction is slow and the final closure mostly influences the closure precision and line shape of the cable-stayed bridge when the symmetric cantilever method is adopting during the construction of the existing two-tower five-span steel truss girder cable-stayed bridge. The quick construction method of the two-tower five-span steel truss girder cable-stayed bridge comprises the following steps: firstly, simultaneously constructing two main tower columns by the same method, constructing the main tower columns through segmented casting, and simultaneously constructing the steel truss girder in the manner of assembling a single cantilever from side-spanning to mid-spanning through auxiliary spanning; then, carrying out the mid-spanning closure of the two main tower columns; and finally, finishing the bridge deck facility. The construction method ensures quick construction speed and is suitable for constructions of all two-tower five-span steel truss girder cable-stayed bridges.

Description

technical field [0001] The invention belongs to the technical field of construction of steel truss girder cable-stayed bridges in bridge engineering, and in particular relates to a rapid construction method for a double-tower five-span steel truss girder cable-stayed bridge. Background technique [0002] At present, the construction method of the double-tower five-span steel truss girder cable-stayed bridge at home and abroad is mainly the symmetrical cantilever method. This method is reflected in the domestic projects that have been built and are under construction, such as Wuhan Tianxingzhou Bridge and Wuhu Yangtze River Bridge And Xinjiang Guozigou Bridge, etc. However, the symmetrical cantilever method has the characteristics that the tower and the girder must first be constructed in the early stage, the tower and girder are synchronized in the middle stage, and there are multiple closing openings in the later stage, so the construction speed is relatively slow; The clo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/10
Inventor 常乃超胡国伟张宇宁吴士民王志峰李勇张飞郭星亮
Owner CHINA RAILWAY NO 3 GRP CO LTD
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