独柱墩桥梁抗倾覆分析与加固设计

The Anti-topple Analysis and Reinforcement Design of Single Column Pier Bridge

独柱墩桥梁具有增加视野、改善下部空间布局及桥型美观等优点,常用在城市立交桥和高速公路匝道桥等项目中,通常为现浇连续箱梁结构形式。由于独柱墩桥梁在汽车偏载作用下结构的横向抗倾覆能力较差,在使用过程中已发生多起超载引起的坍塌事故,文中根据工程实例,对现有的独柱墩桥梁进行结构抗倾覆验算,并对其进行抗倾覆整治改造,以避免类似事故。

Usually used in urban overpasses and expressway ramp bridges,single column pier bridge,which is usually in the form of cast-in-place continuous box girder structure,has some advantages,such as broadening horizon,improving the lower space layout and the bridge's beauty,etc.. Under the influence of car's partial load,single column pier bridge's transverse toppling resistance is poorer,which has lead to several collapse accidents caused by overload in its use process. According to the engineering example,the thesis makes checking calculation and renovation of the existing single column pier bridge's anti-topple ability in order to avoid the bridge toppling events happening again.