To investigate the distributing disciplinarian of ground motion parameters on the earth fissure site during strong earthquakes, a series of shaking table tests were designed and conducted based on 1:15 scaled models. Test results showed significant differences in the ground motion parameters (including ground motion intensity indices, spectrum characteristics and strong motion duration) between the hanging-wall and footwall caused by the earth fissure. Acceleration response, displacement response and Arias Intensity response on both sides of earth fissure indicated that the earth fissure site on the hanging-wall was destroyed more seriously. The distributing disciplinarian of amplification factors showed clear “hanging-wall and footwall effects”, which were more remarkable nearby the fissure zones. The low-frequency component of the seismic wave was richer after selectively filtering in the soil medium. By comparing the predominant period and mean period of the hanging-wall and footwall, it was found that vibration frequency on the hanging-wall was greater than that on the footwall. Minimum values of strong motion duration were recorded on the hanging-wall close to the fissure and increased from the fissure to both sides.

中文翻译：

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强烈地震期间在裂隙部位的地面运动参数分布规律

为了研究强震过程中裂隙部位地面运动参数的分布规律，基于1:15比例模型设计并进行了一系列振动台试验。测试结果表明，由裂隙引起的悬壁和底壁之间的地面运动参数（包括地面运动强度指数，频谱特征和强烈运动持续时间）存在显着差异。裂隙两侧的加速度响应，位移响应和阿里亚斯强度响应表明，悬壁上的裂隙部位受到了更严重的破坏。放大因子的分布规律显示出明显的“上盘和下盘效应”，在裂隙区附近更为明显。在土壤介质中进行选择性过滤后，地震波的低频分量更加丰富。通过比较上盘和下盘的主要周期和平均周期，发现上盘的振动频率大于下盘的振动频率。在靠近裂缝的悬壁上记录强运动持续时间的最小值，并从裂缝向两侧增加。