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考虑到这还仅仅是单个小球的「棒棒糖」模型,如果是八十层的高层建筑,最少也是八十个 小球的「糖葫芦」。每个小球对应每个振型都有相应的位移响应,然后根据我们上面介绍的 振型的概念,进行相应的组合叠加。如果结构体系更复杂,达不到刚性楼面的要求,那么单 层还要用好多个小球来模拟。比如说,如果是跃层,那么不同高度的这两个跃层楼面就要用 不同的小球来表示。这样的地震动力影响非常的复杂,必须要用大规模有限元软件才能做到 足够精度的分析计算
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owner: bian222 - (no access) - 地震力是怎么算出来的111.pdf, p23


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