铁路钢便梁支墩设计与施工要点研究

Study on Key Points of Design and Construction of Temporary Beam Buttress

随着我国交通建设发展,新建公(道)路与既有铁路交叉不可避免,在不中断铁路运营的情况下,优先选择公(道)路下穿铁路,其框架采用顶进法施工。采用顶进法施工方案时,除新建结构满足自身强度及稳定性外,还需采取适当的措施加固、防护铁路,常用的加固方案为架设D型施工便梁。通过理论分析,研究了便梁支墩在设计与施工中的一些要点,为此类桥涵的设计、施工等提供参考建议。

With the development of traffic construction in China,it is inevitable that the new road crosses the existing railway.The road cross the railway without interrupting the railway operation,and the frame is constructed by jacking method.In addition to the new structure meeting its own strength and stability,appropriate measures need to be taken to reinforce the railway.The common strengthening way is using the D-type construction temporary beam.Through theoretical analysis,some control factors in design and construction of temporary beam buttress are studied to provide reference for designing and constructing such bridges and culverts.