Methodology to model local nonlinearities in a slender reinforced concrete member subjected to seismic deformations

摘要

A methodology is proposed for modeling local nonlinear behavior of slender reinforced concrete members. The nonlinearity is modeled by two orthogonal assemblages of nonlinear truss elements representing the nonlinear behavior of concrete and steel reinforcement. The trusses represent narrow strips of concrete to closely calculate the section neutral axis. This modeling procedure is computationally very efficient for seismic nonlinear dynamic analysis. Such a model is used to evaluate a critical column framing a door opening of a nuclear exhaust stack building subjected to seismic motions.