交通荷载作用下水中悬浮隧道动力响应分析  

Dynamic Response Analysis of Submerged Floating Tunnel Under Traffic Load

作　　者：蒋博林[1,2] 梁波[1] JIANG Bolin;LIANG Bo(College of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Vocational Institute of Engineering,Chongqing 402260,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]重庆工程职业技术学院,重庆402260

出　　处：《铁道建筑》2018年第8期75-78,共4页Railway Engineering

基　　金：交通运输部建设科技项目(2013318740050)

摘　　要：采用移动振动荷载模拟悬浮隧道中的交通荷载,并结合数值模拟分析和正交试验,分析了各计算参数对悬浮隧道跨中竖向振动位移的影响。数值计算结果表明,车辆轮载、路面不平度、行驶速度的变化对跨中竖向振动位移影响较小,但波流作用的影响较大;正交试验结果表明,各因素对跨中竖向振动位移的影响程度从大到小依次为波流作用、车辆轮载、路面不平度、行驶速度,与数值计算结果一致。The traff ic load of Submerged Floating Tunnel(SF T)was simulated by the moving vibration load,and the inf luence of calculation parameters on the vertical vibration displacement of SF T mid-span was analyzed by combing with the numerical simulation analysis and orthogonal test.The numerical calculation results show that the variation of vehicle wheel load,road roughness and driving speed has little effect on the vertical vibration displacement of mid-span while the effect of wave current is greater.The results of orthogonal test indicate that the inf luence degree order of test factors on the vertical vibration displacement of mid-span is wave current effect,vehicle wheel load,road roughness and driving speed from large to small,which are consistent with the results of numerical calculation.

关 键 词：公路隧道 交通荷载 水中悬浮隧道 数值计算 正交试验 动力响应 波流作用 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]