圆环塔斜拉桥抗震性能分析  

Analysis on Seismic Performance of Cirque-pylon Cable-stayed Bridge

作　　者：孙书亭[1] 

机构地区：[1]中国市政工程华北设计研究总院,天津市300074

出　　处：《城市道桥与防洪》2013年第5期71-73,15,共3页Urban Roads Bridges & Flood Control

摘　　要：桥梁的抗震设计已成为桥梁设计工作中必不可少的工作,进行抗震分析时应选取合适的时程波,正确的模拟边界条件。在E1地震荷载作用下,运用反应谱法进行分析,结构各部分应处于弹性状态。E2地震荷载作用下,结构一般处于塑性状态,采用非线性时程分析方法。通过分析结构的受力状态、塑性铰形态、残余变形的大小等几方面,判断圆环塔斜拉桥在6度地震区具有足够的抗震安全性。The seismic design of bridge has become the requisite work in the bridge design.It must be to select the suitable time-historical wave and the correct simulating boundary condition for the seismic analysis.Under the action of E1 seismic loading,the structures should be in elastic state and be analyzed by the response spectrum method,and under the action of E2 seismic loading,the structures are generally in the plastic state and are analyzed by the nonlinear time-historical method.The analysis of structural stress state,plastic hinge morphology and residual deformation can judges that the cirque-pylon cable-stayed bridge has the sufficient seismic security in the 6-degree earthquake zone.

关 键 词：时程 非线性 塑性铰 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]