某匝道桥横向相反滑移现象原因剖析与修复  

Cause Analysis and Repair of Transverse Opposite Slip Phenomenon of a Ramp Bridge

作　　者：张枢文 ZHANG Shuwen

机构地区：[1]上海城建城市运营(集团)有限公司,上海200023

出　　处：《上海公路》2023年第1期95-98,M0006,共5页Shanghai Highways

摘　　要：曲线梁桥由于受到弯扭耦合作用,在环境温差和车辆荷载作用下,梁体易产生横向滑移,影响曲线梁桥的结构安全。现就上海某高速匝道桥为例,对其特殊的反弯曲线产生的横向相反滑移现象进行理论分析,并与实际进行对比,得出环境温度和车辆离心力是引起横向滑移的主要因素。最后提出修复措施,可为同类型新建曲线梁桥提供参考。Due to the bending-torsion coupling effect,the curved girder bridge is prone to lateral slippage under environmental temperature difference and vehicle load,which affects the structural safety of the curved girder bridge.Taking a high-speed ramp bridge in Shanghai as an example,this paper makes a theoretical analysis of the lateral opposite slip phenomenon caused by its special anti-bending line,and compares it with the actual situation.It is concluded that ambient temperature and vehicle centrifugal force are the main factors causing lateral slip.Repairing measures are proposed to provide reference for the same type of new curved girder bridge.

关 键 词：曲线桥梁 横向滑移 相反 弯扭耦合 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]