This paper reports on two sets of centrifuge model tests of wind turbines in dry sand and saturated sand subjected to earthquake sequences. The wind turbine system is composed of a single pile foundation and a wind turbine. All tests were applied with liquefaction experiments and analysis projects (LEAP) waves to simplify the analysis. The objectives of the tests are to investigate: (1) the influence of earthquake history on the seismic response of wind turbines; (2) the influence of earthquake history on the dynamic pile-soil interaction; and (3) the influence of two different foundation types on the seismic response of wind turbines. The tests indicated that earthquake history has a significant influence on the natural frequency of the pile and the soil around the pile in the saturated sand, but has no obvious influence on the dry sand. The shear modulus of the soil and the acceleration amplification factor of the pile top in both tests increased and the maximum bending moment envelope of the single pile foundation shrunk. The stiffness of the p-y curve in saturated sand was increased by the earthquake history, while that in dry sand was not significantly affected.

本文报道了风力发电机组在干沙和饱和沙中进行的两组离心机模型试验，经受了地震序列的影响。风力发电机组系统由单桩基础和风力发电机组成。所有测试均采用液化实验和分析项目（LEAP）波来简化分析。测试的目的是研究：（1）地震历史对风力发电机组地震响应的影响；(2)地震历史对桩土动力相互作用的影响；(3)两种不同基础类型对风力机地震响应的影响。试验表明，在饱和砂土中，地震历史对桩及桩周土的固有频率有显着影响，但对干砂土的影响不明显。两次试验中土体剪切模量和桩顶加速度放大系数均增大，单桩基础最大弯矩包络线缩小。的刚度饱和砂中的py曲线因地震历史而增大，而干砂中的 py 曲线没有受到显着影响。