Near-field records with long-period velocity pulses can be considered as a most important factor in causing structural damage. In order to understand the effects of near-field records on the seismic behavior of a 2.0 MW land-based wind turbine, a 1/20-scaled model is designed and investigated by shaking table test. Two pulse-type near-field records (Westmorland record, Chi-Chi record) and two far-field records (Taft record, El-Centro record) are chosen as the input ground motions. The dynamic characteristic, acceleration, displacement, strain and shear force of this structure are measured and compared. The experimental results show that the wind turbine remains in elastic stage during this test. The pulse-type near-field records generally has an amplification effect on the acceleration response at the bottom and top of the tower. The effects of Chi-Chi records on the acceleration and displacement response of the tower top, nacelle and hub are particularly obvious. The vertical displacements at the tower top under Chi-Chi excitation are almost 5.6 times that under El-Centro record excitation. The maximum circumferential and vertical strains appear in the middle and lower part of this tower under the horizontal earthquake excitation, which occur at 1/2–3/4 height of the tower under the vertical earthquake. This study emphasizes the importance of incorporating the pulse-type near-field effects into seismic design of wind turbines, especially for those located in near active fault.

具有长周期速度脉冲的近场记录可以被认为是造成结构破坏的最重要因素。为了了解近场记录对2.0兆瓦陆基风力发电机的抗震性能的影响，设计了1/20比例模型，并通过振动台试验进行了研究。选择两个脉冲型近场记录（Westmorland记录，Chi-Chi记录）和两个远场记录（Taft记录，El-Centro记录）作为输入地面运动。测量并比较了该结构的动力特性，加速度，位移，应变和剪切力。实验结果表明，在该测试过程中，风力涡轮机保持弹性状态。脉冲型近场记录通常会对塔架底部和顶部的加速度响应产生放大作用。Chi-Chi记录对塔顶，机舱和轮毂的加速度和位移响应的影响尤为明显。Chi-Chi激发下塔顶的垂直位移几乎是El-Centro记录激发下塔顶的垂直位移的5.6倍。在水平地震激励下，该塔的中下部出现最大的圆周应变和垂直应变，在垂直地震作用下，该应变出现在塔的1 / 2–3 / 4处。这项研究强调了将脉冲型近场效应纳入风力涡轮机抗震设计的重要性，特别是对于位于活动断层附近的风力涡轮机。Chi-Chi激发下塔顶的垂直位移几乎是El-Centro记录激发下塔顶的垂直位移的5.6倍。在水平地震激励下，该塔的中下部出现最大的圆周应变和垂直应变，在垂直地震作用下，该应变出现在塔的1 / 2–3 / 4处。这项研究强调了将脉冲型近场效应纳入风力涡轮机抗震设计的重要性，特别是对于位于活动断层附近的风力涡轮机。Chi-Chi激发下塔顶的垂直位移几乎是El-Centro记录激发下塔顶的垂直位移的5.6倍。在水平地震激励下，该塔的中下部出现最大的圆周应变和垂直应变，在垂直地震作用下，该应变出现在塔的1 / 2–3 / 4处。这项研究强调了将脉冲型近场效应纳入风力涡轮机抗震设计的重要性，特别是对于位于活动断层附近的风力涡轮机。