钢桁梁顶推系统施工技术改进与工程应用

Construction Technology Improvement and Engineering Application of Steel Truss Girder Incremental Launching System

摘要:

以京沪铁路昆山至陆家浜段改建工程上跨青阳港80 m钢桁梁顶推法架设为工程背景，针对传统顶推施工中存在的不足，通过改进顶推千斤顶、反力架、滑道梁设计、走行装置以及智能控制技术，实现了千斤顶同步顶推、钢桁梁横向自动纠偏及精准就位，安全顺利地完成了80 m钢桁梁顶推的施工任务；另外，通过技术改进，还取得了缩减人员投入、提高施工工效、提升安全水平的成果。

Abstract:

Taking the erection of 80 m steel truss girder across Qingyang Port by the incremental launching method in the reconstruction project of Kunshan to Lujiabang section of Beijing-Shanghai Railway as the engineering background, aiming at the shortcomings of traditional incremental launching construction, by improving the design of incremental launching jack, reaction frame, slide beam, running device and intelligent control technology, the synchronous incremental launching of jacks, transverse automatic correction of steel truss girder and accurate positioning are realized, and the construction task of 80 m steel truss girder incremental launching is safely and smoothly completed. Through technical improvement, the results of reducing personnel input, improving construction efficiency and improving safety level have also been achieved.