Research on Deformation Limit State of Reinforced Concrete Shear-Walls

摘要

The limit state of shear-walls deformation is the key factor to performance-based seismic design of RC shear-wall structures. A structural nonlinear analysis program named MESAP (Macro Element based Structural Analysis Program), is developed by object-oriented technology to simulate the nonlinear behavior of shear-walls which are designed according to Chinese codes. In the MESAP, two types of elements MVLE (multiple-vertical-line-element) and MCFT (modified compression-field theory) are proposed. Several shear-wall-component-experiments were used to verify the rationality and reliability of two nonlinear finite element models. In considering of different reinforcement ratios, axial force level and section dimensions, series models of high and low RC shear-walls are used to obtain the deformation limit state of different earthquake levels. Moreover the calculation approach of the deformation limit state of shear-walls of frequent, medium and rare earthquake level are presented, which can be applied to evaluate the plastic deformation of shear-walls of RC building under different earthquake level.