Installation system and construction method of steel arch bridge with upper span channel

Abstract

The present invention relates to the field of bridge engineering, and more specifically relates to an installation system and a construction method of an upper-span channel steel arch bridge; including the following construction steps: 1) construction preparation, 2) fabrication of steel box girder segments, 3) erection of a steel pipe pile jacking platform , 4) Protective pile driving, 5) Connecting guide beam installation, 6) Steel box girder section pushing, 7) Connecting beam installation, the web positioning bolt and web positioning rod are used to limit the width of the box girder web during construction. position, the position of the box girder ribs is defined by the rib positioning bolts and the rib alignment bolts, the adjacent steel pipe piles are connected into a whole by the tie rod connector and the pile side hoop, and the The connection guide beam and the steel box girder section are connected as a whole, and the supporting slide rail is laid on the steel box girder section, and the lateral position of the connecting beam can be controlled by the sliding brace. The invention improves the installation construction of the long-span steel arch bridge Quality and efficiency, reducing the difficulty of jacking construction.

Description

technical field [0001] The invention relates to the field of bridge engineering, and more particularly relates to an installation system and a construction method of an upper-span channel steel arch bridge. Background technique [0002] The construction scale of large-span municipal steel arch bridges has gradually increased, which has brought many conveniences to the emergence of people; however, with the increase of the span of municipal steel arch bridges, bridge design, construction, manufacturing and other processes will affect the overall quality of steel arch bridges. In this case, it is particularly important to strengthen the control and management of the steel arch bridge construction process. [0003] In the prior art, there is a floating towing installation process for long-span steel structure arch bridges. The steel structure arch bridge includes several steel bridge components manufactured in sections, and the overall pre-assembly is carried out in the factory...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there is a floating towing installation process for long-span steel structure arch bridges. The steel structure arch bridge includes several steel bridge components manufactured in sections, and the overall pre-assembly is carried out in the factory according to the assembly state on site; On the river bank of the site, the steel bridge components were assembled according to the assembly area, which included two steel trusses and two bridge deck blocks; the two steel trusses were floated and hoisted to the pier respectively, and the assembled One bridge deck block is hoisted directly between the two steel trusses, and the other bridge deck block is first transported to the opposite bank by barge, and then hoisted between the two steel trusses by the second crawler, and the bridge deck block is connected to the steel truss in sections. Assembly and welding to complete the assembly of the entire steel bridge; although this technology can reduce the impact of construction on navigation to a certain extent, when the stability of the construction structure is poor and the water flow is not stable, the construction is difficult to implement; and this technology is difficult to solve Connection problems between segments

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