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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。
The anti-seismic performance of anchor anti-slide piles is the foundation for establishing and improving the seismic design method. In order to understand the seismic performance of the landslide successfully, the 50 g centrifuge shaking table model experiment, which can realize the prototype simulation, was used as a reference prototype for anti-slide piles reinforcement project of hill-stacking landslide behind Han source. Rockwell wave as the basement excitation, the use of different types of sensors deployed, record the acceleration of anti-sliding piles anchored pile, the bending moment of pile, moving earth pressure between soil and anchor and the whole process of anchor axial force data reveals that The quantitative response of the landslide body acceleration, the anti-slide pile moment, the earth-moving pressure between the pile and soil and the axial force of the anchor cable during earthquake action with different peak values are used to verify and develop the seismic design theory of the anti-slide pile with anchor cable. Methods to clarify the mechanism of seismic strengthening and failure mode to provide detailed information.