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Construction method for pushing box girders on large-span curve simply supported steel box girders between tunnels

A construction method and technology of steel box girder, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of long construction period and high cost, shorten construction period, reduce construction cost, reduce guide beam disassembly and assembly and The effect of the counterweight period

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Problems solved by technology

[0003] For the position where span bridges are laid between tunnels, multiple steel box girders need to be pushed in the tunnel during laying. For long-span curved road sections, the general construction is to choose the first single box The front end of the box girder is connected to the guide beam, and the rear end is added with a counterweight to push out the second single box girder to realize the laying construction of the large-span curved simply supported steel box girder between the tunnels. However, this construction method has a long construction period and high cost

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  • Construction method for pushing box girders on large-span curve simply supported steel box girders between tunnels
  • Construction method for pushing box girders on large-span curve simply supported steel box girders between tunnels

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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Please refer to Figure 1-2 As shown, the present invention provides a construction method for pushing the box girder on the large-span curved simply supported steel box girder girder between tunnels. The single-span 76m curved pushing is taken as an example below for illustration. The method includes the following steps:

[0029] Step S1, dropping the first steel box girder directly under the portal frame, and making the top surface of the first steel ...

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Abstract

The invention provides a construction method for pushing box girders on large-span curve simply supported steel box girders between tunnels. The construction method comprises the following steps: thefirst steel box girder falls under a portal, and the top face of the first steel box girder is flush with the upper edges of back walls of the tunnels; a sliding steel rail is arranged on the top faceof the first steel box girder, and a sliding girder and sliding shoes are welded to the top face of the first steel box girder; and the second steel box girder is pushed to slide to the preset position on the sliding steel rail and then falls. Compared with related technologies, the construction method for pushing the box girders on the large-span curve simply supported steel box girders betweenthe tunnels is short in construction period and low in cost.

Description

technical field [0001] The invention relates to the construction field of pushing boxes on steel box girder girders, in particular to a construction method for pushing box girders on curved simply supported steel box girders with large span between tunnels. Background technique [0002] As my country's urban subway traffic scale, operating speed, operating mileage, and operating frequency continue to increase, more and more expressways are being built, and most expressways are located in sparsely populated areas that need to cross mountains and ridges. [0003] For the position where span bridges are laid between tunnels, multiple steel box girders need to be pushed in the tunnel during laying. For long-span curved road sections, the general construction is to choose the first single box The front end of the box girder is connected to the guide beam, and the rear end is added with a counterweight to push out the second single box girder to realize the laying construction of ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/06
CPCE01D21/06
Inventor 狄海波张嶷陶伟
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