SEISMIC RESPONSE ANALYSIS OF PILE-SUPPORTED BUILDINGS CONSIDERING MATERIAL NONLINEARITY AND PILE-SOIL SEPARATION
SEISMIC RESPONSE ANALYSIS OF PILE-SUPPORTED BUILDINGS CONSIDERING MATERIAL NONLINEARITY AND PILE-SOIL SEPARATION
复制标题
考虑材料非线性和桩土分离的桩基建筑地震反应分析
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
M. Hasegawa
中科院分区：
文献类型：
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作者：
M. Mori;M. Hasegawa
提出了土-桩-建筑物地震反应分析的数值方法。提出了考虑材料非线性和桩土界面差距的几何非线性的滞回模型。土-桩-建筑系统采用弹簧-质量模型。桩群被压缩成单个桩。在桩体周围设置土弹簧，以评估地基反力作用于桩体时的土阻力。土弹簧的初始刚度由三维薄层公式计算。在桩的两侧铺设了由所提出的滞回模型提供的土弹簧。采用双曲线、Masing准则和修正的Ramberg-Osgood模型来描述土弹簧的材料非线性。滞回模型还可以适当考虑桩与周围土体之间的粘结力。
The numerical method for earthquake response analyses of soil-pile-building is presented. The hysteresis model considering both the material nonlinearity and the geometrical nonlinearity, which means the gap at the soil-pile interface, is proposed. The soil-pile-building system is modeled as the spring-mass model. The pile group is condensed into a single pile. In order to evaluate the soil resistance when applying the subgrade reaction to the pile, soil springs are equipped around the pile. The initial stiffness of the soil spring is calculated by the threedimensional thin layer formulation. The soil spring provided the proposed hysteresis model is laid on both sides of the pile. To represent the material nonlinearity of the soil springs, the hyperbolic curve, Masing's rule and the Modified Ramberg-Osgood Model are used. The hyeteresis model also can consider the adhesive force between the pile and the surrounding soil properly.