管内水流和地铁振动耦合作用下埋地供水管道的振动响应分析  

Vibration Response Analysis of Buried Water Supply Pipeline Under Coupling Action of Water Flow and Subway Vibration

作　　者：李显昌 朱海涛[1,2] LI Xianchang;ZHU Haitao(Department of Civil Engineering,School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coast Civil Structure Safety(Tianjin University),Ministry of Education,Tianjin 300072,China)

机构地区：[1]天津大学建筑工程学院土木工程系,天津300072 [2]滨海土木工程结构与安全教育部重点实验室(天津大学),天津300072

出　　处：《结构工程师》2020年第3期167-174,共8页Structural Engineers

基　　金：国家自然科学基金(51478311);天津大学自主创新基金(2017XRX-0018)

摘　　要：为研究埋地供水管道在管内水流和地铁振动耦合作用下的振动响应规律,采用ABAQUS建立管道-管内水流和轨道-衬砌-土体-管道整体模型,使用间接耦合的方法实现两种作用耦合,模拟供水管道在距隧道中心线不同距离、不同车速、不同埋深、不同管径条件下的速度峰值和加速度峰值,得出变化规律.分析结果表明:距离隧道中心线距离越大,速度峰值越小,加速度峰值越小;车速越大,速度峰值越大,加速度峰值越大,且存在卓越车速使振动响应达到最大值;当管道与隧道正交且处于上方时,埋深越大,速度峰值越小,加速度峰值越小;管径越大,速度峰值越大,加速度峰值越大.In order to study the vibration response law of buried water supply pipelines under the coupling action of in-pipe water flow and subway vibration,the overall model of pipe-in-pipe water flow and rail transportation-lining-soil-pipeline was established based on the finite element program ABAQUS.The indirect coupling method was used to achieve the two kinds of functional coupling and the variation law under different conditions was obtained.The results show that:the greater distance leads to the lower peak velocity and peak acceleration.The higher speed results in the higher peak velocity and peak acceleration,and the presence of an excellent speed maximizes the vibration response.When the pipe is orthogonal to the tunnel and above,the larger buried depth and pipe diameter contributes to the opposite result.

关 键 词：地铁振动 供水管道 耦合作用 数值模拟 

分 类 号：TU991.36[建筑科学—市政工程]