轨道交通工程连续刚构无支座桥梁脱轨荷载设计研究

Research on Derailment Load Design for Continuous Rigid Frame Bridge without Support in Rail Transportation Project

广州某轨道交通工程采用预制节段连续刚构无支座体系。我国对连续刚构无支座体系脱轨荷载的研究相对较少,且铁路上脱轨荷载主要参考国外标准。结合实际工程,对比国内外标准,将梁部、墩部、墩梁结合处等关键部位针对脱轨荷载进行详细设计计算,得出的结论,为类似设计提供参考。

The continuous rigid frame system without support is adopted for prefabricated subsection in a rail transportation project in Guangzhou. The research on derailment load of continuous rigid frame system without support is relatively less in our country,which mainly refers to foreign standard. In combination with actual project,domestic and foreign standards are compared,detailed design calculation is made on key parts like beam,pier,joint of pier and beam and so on for derailment load,and the conclusion is obtained,thus providing reference for similar design.