Prediction of Seismic Damage in Reinforced Concrete Frames. Seismic Behavior and Design of Buildings, Report No. 3

摘要

Development and testing of a rigorous model to identify and predict local damage in reinforced concrete frames under seismic loads are reported. Analytical models for inelastic behavior of reinforced concrete members were used to analyze a set of static load tests under a variety of loading conditions. Other damage indicators such as dissipated energy and cumulative plastic rotation were measured for each test. Results of the sample were used to develop a stochastic model of damage for reinforced concrete members. The stochastic model computes probabilities of member failure under inelastic load cycles. The model was applied to inelastic dynamic analysis of a 4-story and an 8-story building frame under several earthquake motions. Final results are presented by probabilities of local failure in a building frame subjected to a given earthquake. A model for computing the system reliability as a function of correlation between member resistances also is described.