NOLINEAR FINITE ELEMENT ANALYSIS OF STEEL HPFRCC SHEAR WALLS

Based on experiments for steel high performance reinforced concrete ( SHPRC) structural walls and considered the material nonlinearity，nonlinear finite element analysis models of steel HPFRCC shear walls were established by ABAQUS to simulate the complete process of the loading． The finite element analysis results were in good agreement with the experimental results． According to the finite element models，the performance of SHPRC walls was studied after replacement of concrete with HPFＲCC of high strength and high ductility． The analysis results showed that steel HPFRCC shear walls could significantly improve the seismic ability as well as the ability to reduce the damage with the same shear reinforcement and confining reinforcement，so the post-earthquake restoration costs were reduced． For HPFRCC or concrete shear walls using HPFRCC in plastic hinge region，the deformation capacity was improved as the plastic hinge height increased，but its scope had a critical value． When the plastic hinge height exceeded the critical value，deformation capacity of shear walls no longer increased．