Constitutive Modelling of Concrete and Rocks Under Multiaxial Compressive Loadings

摘要

This research envisages development of constitutive models for joints in rock (concrete) subjected to cyclic loads. The objective is to implement the models in (numerical) solutions of boundary value problems involving solids and joints subjected to dynamic loads such as blastes and earthquake. Hence, it is appropriate to develop models for both the joints and the intact or solid (concrete) media in which the joints occurs. This report contains description of a new hierarchical plasticity-based constitutive model, laboratory testing using a multiaxial device and verification for the intact concrete used in the investigation.