铁路客运专线新型桥梁结构与施工技术

New bridge structure and construction technology of the passenger dedicated railway line

结合客运专线建设实践,以铁路客运专线所采用的桥梁新结构及施工技术为研究对象,分析了后张法预应力混凝土箱形简支梁、装配式双向预应力混凝土T形简支梁、钢筋混凝土刚构连续梁、钢与混凝土结合连续梁等新型桥梁结构的特点和施工要点。在此基础上,总结了桥梁设计与施工新技术对今后铁路客运专线建设的借鉴作用,并对今后我国铁路客运专线桥梁结构的设计与施工提出了一些建议。

Combined with construction practice of the passenger dedicated railway line,aiming at the new bridge structure and constuction technology,the characteristic and main point of some new bridge stucture were analysed,such as the post-tensioned prestressed concrete simple supported box beam,two-way prestressed concrete simple supported fabricated T beam,RC rigid framed continuous girder and steel-concrete composite continuous girder.The role of these new technology was summarized based on the construction of passenger dedicated railway line,and was put forward.Some proposals to the structure design and construction of passenger is helpful to railway line bridge.