Research on Streamlining Seismic Safety Evaluation of Underground ReinforcedConcrete Duct-Type Station: Part-3. Analytical Simulation by RC Macro-Model and Simple Soil Model

摘要

We have been conducting a research to obtain the verification data concerning the performance of RC duct-typeunderground structures subject to strong earthquakes. In this paper, we simulated large-scale laminar shear box excitation test[1] by a dynamic nonlinear FEM and discussed the validity of modeling, by which RC member and soil are def'med ashysteresis dependent models (RC : Axial force dependent degrading tri-linear model, soil : Ramberg-Osgood model), usingjoint elements to simulate the interaction along the interface of two materials including the slippage and separation betweensoil and RC structure.As a result, the proposed analytical method was confirmed to predict the deformational characteristics of soil and RCstructure as well as damages of RC structures in relation to verification of seismic performance within a practical accuracy.