悬索跨越管道地震响应分析

Seismic Response Analysis of Cable-Suspending Pipes

悬索跨越管道在地震作用下易受破坏,其地震响应分析、抗震设计方法的研究己成为管道跨越工程设计中的重要课题。文中建立了ANSYS分析模型,运用大质量地震输入方式,以典型的地震波作用于悬索跨越管道,进行非线性动力时程分析,得到悬索跨越管道地震响应结果,分析了悬索跨越管道地震响应的规律和特点。结果表明:悬索跨越管道在地震作用下,弯管处受力最大,管跨中点位移最大,地震波轴向和竖向分量对结构响应更强烈。

Suspending pipes are prone to be broken in an earthquake. The seismic study of suspending pipes is of great significance. An analysis model of cable-suspending pipelines is built in ANSYS and the seismic analysis method is introduced. By selecting the method of high-mass input seismic waves,typical seismic waves are input in cable-suspending pipes. Then the characters and regularity of seismic responses to cable-suspending pipelines is studied. The results show that,due to the impact of a strong earthquake,the bending part is under the greatest stress,the displacement of middle suspending pipes is largest,and the axial and vertical components of seismic waves has strong impacts.