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推导得出了一个简化过渡界面单元的单元刚度矩阵.采用界面元-有限元的混合模型来模拟三维土-结构体系,并采用一致边界来模拟波向无穷远域地基的传播作用.然后编制了一个可用于进行三维土-结构非线性地震反应分析的程序,并用该程序对一框架结构进行了考虑土-结构相互作用影响的地震反应分析.最后总结了各种非线性因素和土-结构相互作用效应对结构地震反应的影响规律.图11,参9.
A simplified element stiffness matrix of transitional interface element is deduced.The mixed model of interface element and finite element is used to simulate the three-dimensional soil-structure system and the uniform boundary is used to simulate the propagation of wave to infinity base.And then, A program that can be used to analyze the nonlinear three-dimensional soil-structure nonlinear seismic response and used the program to analyze the seismic response of a frame structure that takes into account the soil-structure interaction.Finally, various nonlinear factors and soil-structure interaction Effect of the effect on the seismic response of the structure.