临近系杆拱架梁受力检算及加固方案研究

Study on Stress Checking and Strengthening Scheme of Girder Erection Adjacent to Tied Arch

文章以张呼客运专线卧佛山跨京藏高速立交特大桥箱梁架设为研究背景,系统介绍了运架一体机临近大跨度简支系杆拱架设箱梁的施工检算与现场加固方案。根据系杆拱的设计资料和运架一体机装备参数,采用有限元软件对架设过程中的桥梁受力情况进行模拟检算,对检算不满足要求部位进行加固、验算,按照验算方案对现场梁体实施加固,可为工程中各种复杂桥梁型式、架桥机种类的组合案例提供借鉴。

Based on the box girder erection of Wofoshan Super Major Bridge of ZhangHu passenger dedicated line overpassing the interchange on the Beijing-Tibet Expressway,this paper systematically introduces the construction checking calculation and on-site reinforcement scheme for box girders erection with transport-erection machine adjacent to large-span simply-supported tied arch.According to the design data of tied arch and the equipment parameters of transport-erection machine,the finite element software is used to simulate and check the stress of the bridge during the erection,reinforce and check the parts that do not meet the requirements.The field girder bodies are reinforced according to the checking scheme,which can provide a reference for the combination cases of various complex bridge types and bridge erection machine types in the project.