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Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge

A technology of main tower piers and steel girders, which is applied in bridge construction, erection/assembly of bridges, bridges, etc., can solve the problems of large number of temporary structures, complex construction process of steel girders, and long time occupation of floating crane resources, so as to save temporary The effect of reducing the amount of structural engineering, reducing the longitudinal movement of steel beams, and shortening the working time

Active Publication Date: 2012-07-04
中铁大桥局集团第八工程有限公司
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem of long time occupation of floating crane resources, influence of river water level changes, large number of temporary structures, and complex construction process of steel girders during the erection of steel girders on the top of the main tower pier of the steel truss girder cable-stayed bridge. The problem

Method used

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  • Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge
  • Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge
  • Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] like figure 1 As shown, the steel truss girder cable-stayed bridge main tower pier top steel girder is formed by sequentially connecting the first, second, third and fourth internode steel beams 601, 602, 603 and 604, and the second and third internode The steel beams 602 and 603 are located directly above the pier top of the main tower, and the first and fourth inter-segment steel beams 601 and 604 are respectively located on both sides. Extended on both sides.

[0042] by figure 1 For example, the steel beams on the top of the main tower pier form nodes E22, E23, E24, E25 and E26 on the bottom surface in sequence from left to right, and nodes A22, A23, A24, A25 and A26 on the top surface in sequence.

[0043] The steel truss girder cable-stayed bridge main tower pier top steel girder erection method provided by the invention comprises the following steps:...

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Abstract

The invention discloses a method for erecting a girder on top of a main tower mound of a steel truss girder cable-stayed bridge, which includes the following steps: A10, an erection crane occupying support is erected beside the main tower mound, and a first erection crane is erected on the support; A20, a girder rod piece on top of a mound is hoisted from the surface of a river directly by using the first erection crane, and a third section of girder close to a position beside the erection crane occupying support is erected; and A30, the first erection crane is moved by using a walking device of the erection crane, erection of a second section of girder and a first section of girder is finished sequentially, a second erection crane is assembled on the first section of girder, and a fourth section of girder is erected by using the first erection crane. By means of the method, using time of a floating crane is shortened, a large number of slide girders, sliding cushion blocks and vertically-moving devices are not required to be arranged on a bracket beside the mound, work amount of temporary structures is saved, vertically-moving processes of the girders are reduced, working time is shortened, construction cost is saved, and effect of riverway water level is avoided.

Description

technical field [0001] The invention relates to a bridge construction method, in particular to a method for erecting a steel girder at the pier top of a main tower of a steel truss girder cable-stayed bridge, and is particularly suitable for the pier top at the main tower of a steel truss girder cable-stayed bridge with large changes in river water level and a relatively high distance from the steel girder to the river surface Erection of steel girders between four sections. Background technique [0002] For the construction of the pier top steel girder at the main tower of the steel truss girder cable-stayed bridge in water, the conventional construction plan is to install a slideway beam and a longitudinal movement device on the bracket beside the pier, and firstly use the floating crane to assemble the side-span side pier on the side of the main span The steel beam in the outermost section of the roof (or the steel beam in the outermost section of the side pier top of the...

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Application Information

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IPC IPC(8): E01D21/00
Inventor 代皓李军堂涂满明张爱花张瑞霞姚发海吕磊张文斌杜凤吴方明
Owner 中铁大桥局集团第八工程有限公司
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