Numerical analysis on mechanical performance of precast RC coupled shear wall with PC infill wall
In order to study the mechanical performance of precast RC coupled shear wall with precast concrete(PC)infill wall subjected to horizontal load,the finite element analysis(FEA)models for one specimen without infill wall(CSW-N)and two specimens with PC infill walls(CSW-F and CSW-R)were established.The influence of axial compression ratio,concrete strength grade of PC infill walls,and arrangement of rigidly connected specimens'anchorage reinforcement on the mechanical performance of precast RC coupled shear walls was examined.The research results show that when the axial compression ratio is increased from 0.1 to 0.6,the peak load capacity of the specimen CSW-F increased by about 69.92%,the ductility coefficient decreased by about 40.68%,and the peak load capacity of the specimen CSW-R increased about 47.00%,and the ductility coefficient decreased by about 42.06%.For specimen CSW-F,the increasing concrete strength of the PC infill walls had little influence on the peak load capacity of specimen due to the small constraint effect of the PC infill wall on the shear wall.For specimen CSW-R,the peak load capacity increased by about 7.20%and 4.32%when the concrete strength grade of the solid walls and sandwich walls increased from C15 to C30,respectively.The peak load capacity of the specimen withsolid walls is higher than that of sandwich walls under the same concrete strength.For specimen CSW-R,the variation in diameter of anchorage reinforcement has a minor effect on the structural performance of shear walls,but increasing the number of anchorage reinforcements can enhance the peak load capacity of the shear walls.