高速铁路超长大桥梁设计研究

超长大桥梁在高速铁路上具有广泛设计代表性。由于桥上跨线工点多、线路平面关系复杂,桥上有道岔咽喉区、高架站,结构设计复杂,因此特殊桥梁结构在超长大桥梁上的应用空间和创新设计方面潜力巨大。以京沪高速铁路天津特大桥为背景,简要介绍该桥的建设环境、技术标准、地质资料和墩台形式。归纳大跨度连续梁、道岔区桥梁、站台梁等代表性工点的设计要点,重点介绍该桥的特殊结构,总结京沪高铁桥梁设计经验,为今后中国高速铁路建设优化创新提供借鉴。

Design and Research on Super Major Bridges of High-speed Railway

The design of super major bridges is of great representativeness applied to high-speed railway.Due to the multiple cross-line work-point,the complex plane and elevation relation of the line,the switch throat area and viaduct station on the bridge,and the complicated structural design,there remain huge potentials in perspective of special bridge structures and design innovations on super major bridges. This paper takes Tianjin super major bridge of Beijing-Shanghai high-speed railway as an example to briefly introduce the construction environment,main technical standards,geological conditions and the types of bridge piers and abutments of the bridge. Meanwhile,it also addresses the design features such as longspan continuous beams,turnout zone bridges, station platform beams, and focuses on the special structures of this bridge,and summarizes the experiences in the design of bridges on Beijing-Shanghai high-speed railway,which could provide references for future optimization and innovation of high-speed railway construction in China.