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A construction method of weathering steel box girder

A construction method and technology of steel box girders, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as poor welding performance, affecting the forming quality and deformation of the steel box girder bridge itself, and achieve reduction in welding volume, The effect of saving construction time and reducing mass

Active Publication Date: 2015-09-09
MCC NORTHEAST CONSTR SHENYANG ENGTECH CO LTD +1
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  • Description
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Problems solved by technology

However, the welding performance of Q345qDNH weathering steel is slightly poor. Using ordinary welding technology to weld Q345qDNH weathering steel beam sections into steel box girders, or welding between steel box girder units, the deformation of Q345qDNH weathering steel will be caused by factors such as steel plate thickness and welding temperature. , thus affecting the forming quality of the steel box girder and the bridge itself

Method used

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  • A construction method of weathering steel box girder
  • A construction method of weathering steel box girder
  • A construction method of weathering steel box girder

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Embodiment Construction

[0016] Embodiments of the construction method of the weathering steel box girder according to the present invention will be described below with reference to the accompanying drawings. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. In addition, in this specification, the same reference numerals denote the same or similar parts.

[0017] figure 2 is a schematic structural view showing a steel box girder section according to an embodiment of the present invention. image 3 Yes figure 2 Schematic diagram of the structure of a single steel box girder element of a steel box girder section in . like figure 2 and image 3 As shown, a weathering steel box girder unit 10 includes a top plate 1 , a web 2 and a bottom plate ...

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Abstract

The invention provides a construction method of a weathering resistant steel box girder. The method includes the steps of a, manufacturing weathering resistant steel box girder units; b, splicing multiple steel box girder units into steel box girder sections through top plates; c, hanging the steel box girder sections to preset positions after the same are pre-spliced; d, splicing the steel box girder sections to fix the same; e, fixing the steel box girder sections with one another by means of multiple welding to form the weathering resistant steel box girder; wherein connectors of to-be-welded parts of the steel box girder units are fixed with one another through multiple welding, and the steel box girder sections are fixed with one another through multiple welding. By the construction method of using multiple welding, the highest temperature of the to-be-welded parts is controlled to guarantee good welding effect, the weathering resistant steel box girder is free of deformation, construction time is shortened, and forming quality of the steel box girder and a bridge is increased.

Description

technical field [0001] The invention relates to the field of construction, in particular to a construction method for a steel box girder of Q345qDNH weathering steel used in the construction of long-span road bridges, railway bridges and other bridges. Background technique [0002] With the development of the transportation industry, the bridge design ability is gradually improved, and the span of the bridge is also greatly increased. For long-span bridges or long-span pedestrian bridges, steel box girders are usually used as structural forms. Due to the large span of the steel box girder, the overall installation is inconvenient, so the steel box girder is cut into several sections, and the adjacent steel box girder sections are connected by welding. figure 1 A structural schematic diagram of an existing weathering steel box girder section is shown. like figure 1 As shown, the steel box girder 1000 is formed by welding a plurality of steel box girder girder sections 100,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
Inventor 许洪川胡中兴张立武韩越苏永辉胡长亮邢世洋代越
Owner MCC NORTHEAST CONSTR SHENYANG ENGTECH CO LTD
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