锚索抗滑桩地震响应的离心振动台模型试验研究

 锚索抗滑桩的抗震性能是建立和改进其抗震设计方法的基础。为深入理解其抗震性能，以汉源背后山堆积型滑坡锚索抗滑桩加固工程为参考原型，采用能实现原型仿真的50 g离心振动台模型试验，输入不同峰值的汶川地震清溪台基岩波作为基底激励，利用布设的不同类型传感器，记录锚索抗滑桩加固堆积型滑坡体的加速度、桩身弯矩、桩土间的动土压力和锚索轴力全过程的时程数据，揭示不同峰值的地震动作用时加固滑坡体加速度、抗滑桩弯矩、桩土间的动土压力和锚索轴力的定量化响应规律，为验证和发展锚索抗滑桩的抗震设计理论、数值模拟方法、厘清抗震加固机制及破坏模式提供翔实的资料。

Experimental study on seismic response of anti-slide piles with anchor cables by centrifugal shaking table

Seismic performances of anti-slide piles with anchor cables are the basis for establishing and improving their seismic design method. To reveal the seismic behaviors of anti-slide piles with anchor cables，the project of anti-slide piles with anchor cables reinforcing the Beihou mountain landslide was taken as the reference prototype，and the corresponding 50 g model on centrifugal shaking table for simulating the prototype performances was built. The bedrock waves at Qingxi station during the Wenchuan earthquake were exerted as the base excitation in the model tests. The historic data of accelerations on the surface and inside the landslide reinforced by anti-slide piles with anchor cables，the strains of pile，the dynamic soil pressures between the landslide body and the anti-slide piles and the axial forces of anchor cables were recorded. The variations of landslide accelerations，bending moments of anti-slide，dynamic soil pressures between the landslide body and the anti-slide piles，axial forces of anchor cable were revealed from the above data.