均质场地非线性地震反应的半解析算法

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运用动态应力-应变关系及其推广的Masing加卸载准则,考虑土体在地震等产生的不规则加载条件下的非线性滞回特征,将增量法与相应场地地震线性反应解析解相结合,提出了该问题的非线性地震反应的半解析时域算法.针对Seed-Idriss给出的砂土平均曲线,计算了均匀密砂的非线性地震反应.算例结果表明,该算法是合理可行的.
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