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本文对埋置狭长型敞口矩形水池,简化为平面二维问题,首次提出了两侧壁变形可不一致的计算模型以代替通常视水池整体为一剪切型悬臂梁的作法。本文考虑液体-结构-土体共同工作,将样条有限元与半解析元法相结合来分析地震反应,并用复模态方法求解非比例阻尼性质的总体方程以避免耦联。通过分析、比较几种例题的地震反应,表明了采用新计算模型的必要性。
This paper simplifies the formation of rectangular open-ended ponds into two-dimensional planes. For the first time, an inconsistent calculation model for the deformation of the two sidewalls is proposed to replace the practice of a generally-sheared cantilever as a whole. This paper considers the joint work of liquid-structure-soil, combines the spline finite element method with semi-analytical element method to analyze the seismic response, and uses the complex modal method to solve the general equation of non-proportional damping properties to avoid coupling. By analyzing and comparing the seismic responses of several examples, the necessity of adopting a new calculation model is shown.