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Introduction Greeting the coming of the 21st century, Professor HU Yu-xian and other Chinese scholars briefed the trend of earthquake engineering in China and aboard (HU, 1999; HU, ZHOU, 1999). The experiences and lessons learning from the destructive earthquakes in China and abroad in re-cent years, the damage action of the large velocity impulse in ground motion in near field in seis-mic design, numerous earthquake examples show that there are many weaknesses in aspects of earthquake p… 相似文献
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不同倾角断层对场地动力放大效应的分析 总被引:1,自引:0,他引:1
一般认为断层有一定的隔震作用,但是也有不少震害表明断层附近的破坏反而比较严重。为探讨其中机理,采用有限元方法分别建立包含不同倾角无厚度断层的场地模型,并分析了在各种频率入射波的作用下该场地的动力反应。计算结果表明,断层对场地的动力反应有一定的放大作用,特别是当入射波的频率与场地的基频接近时,放大效应更为明显。计算结果还表明,断层的倾角对场地的动力反应也有影响,随着断层倾角的减小,断层出露点附近的动力放大效应增大。 相似文献
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