大跨度悬索管桥减震支座设置研究浅析

Analysis of Longspan Suspension Pipeline Bridge Amortisseu

悬索管桥属于柔性桥,其整体刚度较小。在风振、地震、清管等动荷载作用下,管道均有一定的震动位移。清管荷载相对较大,而且随时间变化。在以往工程中,清管时桥面变形较大,有的甚至达到1m以上。为了减少管道清管过程中震动过大,中缅油气管道设计项目组对大跨度悬索管桥减震支座进行了可行性分析,供各位同行参考。

Suspension Pipeline-Bridge is flexible,and the overall stiffness is low.Under the wind,earthquake,pigging and other dynamic loads,there is a certain vibration displacement of piping.Pigging load is large,and change over time.In past projects,the deck make a large deformation when pigging,and some even up to 1 metre or more.In order to reduce too large vibration during pigging,China-Burma oil and gas pipeline engineering project management group analysis the feasibility of long span suspension bridge seismic bearing and provide for colleagues to reference