Dislocation installation method of corrugated steel web

Abstract

The invention relates to the field of corrugated steel web bridges for cantilever construction, in particular to a process method for dislocation installation of a segmental corrugated steel web. The method comprises the following specific construction steps of: (1) pouring concrete 2 into an nth section and transporting a corrugated steel web 1 in an (n+1)th section from a storage yard to a position below a section where the corrugated steel web 1 is to be installed for installing; (2) installing the steel web 24 hours after the concrete 2 is poured into the nth section; (3) after the constant strength of the concrete in the nth section reaches the strength required by the design and the section is stretched by pre-stress, moving a construction truss vehicle 3 forward from the front end of an (n-1)th section to the front end of the nth section, anchoring in place and entering to the (n+1)th section for constructing; (4) installing a steel bar and a corrugated pipe in the (n+1)th section; and (5) after the procedure in a step (6) is completed, pouring concrete into the (n+1)th section, installing a corrugated steel web in a next section at a constant-strength stage after pouring and entering a next construction cycle. By adopting the method, the construction efficiency is greatly increased, and the section cycle construction period is shortened.

Description

technical field [0001] The invention relates to the field of cantilever-constructed corrugated steel web bridges, in particular to a process method for dislocation installation of segmental corrugated steel webs. Background technique [0002] With the continuous development of bridge structures in our country, new bridge structure forms are constantly emerging, and the world's first corrugated steel web bridge, which was first proposed and built by France, was introduced to Japan for development and further optimization. This type of bridge was introduced in the first century, mainly prefabricated beams with small spans and cast-in-place beams with full supports. It was not until 2010 that my country's first variable-section multi-span continuous corrugated steel web PC bonded beam was built. This type of bridge adopts 10-30mm thick steel plate, which is bent into a wave shape, replacing the 30-80cm thick concrete web in the box girder structure, while reducing the self-weigh...

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Problems solved by technology

[0003] Among them, the installation of segmental corrugated steel webs is a key process. According to the existing steel-concrete structure, the application number applied by the applicant is: 201020300285.8. The construction method is to install the corrugated steel web of the section to weld the joints after the construction truss truck is moved forward and put in place, and at the same time construct the reinforcement and formwork of the section, and pour the concrete after all are completed, so that the process crossover is relatively small in the whole process. Many, and the welding time of joints is long, which usually affects the installation of steel bars and formwork, so that the efficacy of the entire overhanging process is reduced

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