大型框架桥下穿既有铁路顶进施工技术总结与探讨

Sum up and Probe into the Jacking Construction Technology for Existing Railway Under-passing the Large-frame Bridge

以西安市灞桥区河堤东路下穿陇海、西康铁路钢筋砼框架式立交桥为工程实例,对框架桥下穿既有铁路顶进施工技术中的线路加固、顶进施工等关键工序以及采取的安全措施进行了总结。

Taking the reinforced concrete frame overpass of Longhai Railway and Xikang Railway under-passing Hedi East Road, Baqiao District, Xi＇an City, as an example, this paper sums up some critical procedures such as the line consolidation and jacking construction and some measures for security in the jacking construction technology for existing railway under-passing the Large-frame bridge.