Construction method for splicing and erecting concrete precast beam sections

Abstract

The invention discloses a construction method for splicing and erecting concrete precast beam sections, comprising the following steps of: 1) arranging a plurality of site splicing platforms beside a beam line to be erected; 2) arranging a plurality of precast beam sections on the site splicing platforms, and carrying out section splicing, glue joint, rope penetration, pre-stressed reinforcement tension and grouting on the plurality of precast beam sections so that the precast beam section are spliced into a beam to be erected; 3) hoisting a first spliced beam to be erected on a pier through a hoisting device and mounting the first spliced beam to be erected; 4) hoisting a beam transportation truck on the mounted first spliced beam to be erected through the hoisting device; 5) arranging a bridge girder erection machine on the beam line to be erected; 6) hoisting following mounted beams to be erected on the beam transportation truck through the hoisting device, and feeding the beams to the bridge girder erection machine through the beam transportation truck; and 7) mounting the beams to be erected through the bridge girder erection machine. By additionally arranging the site splicing platforms, the time for each process is reasonably distributed, so as to ensure the splicing quality and improve the mounting efficiency and the security.

Description

technical field [0001] The invention relates to a bridge erecting method, in particular to a construction method for assembling and erecting concrete prefabricated beam segments. Background technique [0002] In recent years, with the continuous development of modern urban construction, traffic problems have become increasingly prominent. There are more and more elevated roads and rail transits in urban areas and suburbs, and urban development requires viaducts and rail transits to be beautiful in shape and high in appearance quality. , Concrete shrinkage and creep are small, and the construction has little impact on the surrounding environment and traffic. The traditional construction method adopts cast-in-place support, which leads to more and more waste in quality assurance and investment, while the overall prefabricated erection construction method requires sufficient site nearby, which is also subject to certain restrictions. Under various conditions, the prefabricated...

AI Technical Summary

Problems solved by technology

[0006] However, the currently commonly used prefabricated beam segment assembly construction method still has certain deficiencies.

After the prefabricated sections in the factory and on site are transported to the assembly site, it is necessary to complete the assembly, seam treatment, cable threading, prestressed steel bar tensioning, grouting, etc. It takes about a week to erect and install the girder body in place. The whole process takes up a lot of time for the bridge erecting machine, which is unreasonable in terms of time and economy.

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