论文部分内容阅读
河谷两岸地震地面运动的差异对于建造在深山峡谷、基底延伸很长、各点高差很大的复杂空间结构的高拱坝地震反应和抗震安全有极为重要的影响，可导致两岸坝肩形成抗震薄弱部位。本文采用显式有限元法结合人工透射边界，对小湾河段左岸孤立半岛地形对坝址河谷地震动的影响作了初步分析探讨，半岛地形引起的河谷两岸地震动频谱分量和动位移的差异，在大坝抗震安全性的评估中应予考虑。
The difference of ground motion between earthquakes along the banks of the valley The seismic response and seismic safety of high arch dam with complex spatial structures with long basement extension and large height difference at every point in the deep canyon have a very important impact and can lead to the formation of aseismic Weak parts. In this paper, explicit finite element method combined with artificial transmission boundary, preliminary analysis of the impact of isolated peninsula topography of Xiaowan reach on dam ground motion, the difference between the spectral components and dynamic displacements caused by peninsula topography , Should be considered in the evaluation of dam seismic safety.