地震下悬浮隧道所受动水压力研究-SV波

一种新型的跨越海峡、湖泊的交通结构物——悬浮隧道日益受到世人的关注。本文基于位移势函数理论,将海底岩土看作半无限弹性体,海水看作理想流体,锚索看作刚性约束,推导了平面SV波从海底岩土斜入射到与海水的交界面时,受到刚度较大的锚索作用的刚性悬浮隧道所受到的动水压力的理论公式;分析了不同海底岩土参数与平面SV波的不同频率和方向对悬浮隧道所受的动水压力的影响。结果表明,除海底岩土密度外,海底岩土剪切模量、泊松比以及入射SV波的频率和方向对悬浮隧道所受的动水压力均有较大影响。

Hydrodynamic Pressure on Submerged Floating Tunnel under the Earthquake-SV-Wave

An new type of traffic structure crossing straits and lakes-Submerged Floating Tunnel has received much attention all over the world increasely. Based on the displacement potentials, and taking submarine rock and soil as elastic half-space and seawater as ideal fluid, anchors as rigid restraints, the theoretical formula of the hydrodynamic pressure on rigid submerged floating tunnels with rigid anchor restraints are derived with plane SV-wave incident from submarine rock and soil. Subsequently, the effects of different submarine rock and soil parameters, and different frequencies and directions of plane SV-wave on the hydrodynamic pressure on submerged floating tunnels are analyzed. It could be concluded that all the parameters have significant effects on the hydrodynamic pressure on Submerged Floating Tunnel except the submarine and soil density.