NONLINEAR MODELING OF REINFORCED-CONCRETE STRUCTURES

A nonlinear finite element analytical model for reinforced concrete st ructures is presented in this paper. In this model, the constitutive r elation for concrete is established on the heterogeneous strain harden ing plasticity theory and the post-cracking behaviour is governed by a bond stress distribution function proposed by the authors. As an exam ple, the experimental result of a shearwall specimen is employed for c omparison with the analytical result obtained by using this nonlinear model. It is demonstrated that the model can be applied to predict the structural response, the crack pattern and ultimate strength of reinf orced concrete structures with confidence.