Numerical Analysis on Damaged Reinforced Concrete Shear Wall Repaired with Engineered Cementitious Composites

Abstract:

The extended finite element method (XFEM) combined with cohesive zone model was adopted for numerical analysis on seismic damaged reinforced concrete （RC） shear wall repaired with engineered cementitious composites (ECC). The simulation focused on the crack initiating and propagating in concrete and ECC and interfacial fracture between concrete and ECC. Based on that, the mechanical behaviors of the original RC wall and repaired wall were modeled for the seismic performance under lateral loads. It is shown that the method can well simulate the mechanical behaviors of the repaired shear wall with bonded interface, and numerical analysis results have a good agreement with test results in ultimate bearing capacity.