Construction technology of top push method for erecting large span steel box beams of railway bridges
Liangshan Zhang
CHN Energy Shuozhou-Huanghua Railway Development Co.
Peipei Shang
CHN Energy Shuozhou-Huanghua Railway Development Co.
DOI: https://doi.org/10.59429/esta.v11i4.8462
Keywords: Railway bridge; Large-span steel box girder; Top push method installation; Construction technique
Abstract
In response to the problems of high construction difficulty, high precision requirements, and significant impact on surrounding traffic in the process of erecting large-span steel box girders for railway bridges, this paper proposes a construction technology based on the walking multi-point synchronous pushing method. This technology gradually pushes the steel box girder forward by installing a pushing device on the bridge pier, solving the problem of traditional lifting methods being unable to meet the requirements of large-span steel box girder erection. The research results indicate that this method can not only effectively control construction accuracy and reduce the impact on surrounding traffic, but also significantly improve construction efficiency and safety. By reasonably setting up temporary piers and steel guide beams, the stability of the steel box girder during the pushing process has been further enhanced. The research results can be applied to similar large-span steel box girder erection projects, providing valuable technical references for future railway bridge construction.
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