HPC端部加强双钢板组合剪力墙的抗震性能

Seismic performance of HPC end strenghened steel-plate-reinforced concrete shear wall

为研究高性能混凝土端部加强双钢板组合剪力墙受力机理及破坏形态,以轴压比、腹部普通混凝土强度等级为关键参数,设计了4片普通试件,7片HPC端部加强试件,运用ABAQUS构建其有限元模型,研究其抗震性能。结果表明:同轴压比下,HPC端部加强试件相比普通试件屈服荷载提高16.30%,峰值荷载提升13.40%;随着轴压比提高,HPC端部加强试件峰值荷载和屈服荷载分别提高7.22%和2.72%,随着轴压比减小,HPC端部加强试件延性提升22.26%;提高腹部腔体混凝土强度等级,HPC端部加强试件的屈服荷载和峰值荷载分别提高13.01%和11.14%,延性提升16.91%。

This paper aims to investigate the force mechanism and failure modes of HPC end strengthened steel-plate-reinforced shear walls.The experiment involves designing 4 ordinary specimens and 7 HPC strengthened specimens by taking axial compression ratio and belly ordinary concrete strength grades as the key parameters,and developing the finite element models by utilizing ABAQUS to research and analyze the seismic performance.The results show that the yield load and peak load of HPC end-reinforced specimen increases by 16.30%and 13.40%,compared with ordinary specimens under coaxial pressure ratio;with the increase of axial compression ratio,the peak load and yield load of HPC end-reinforced specimens increase by 7.22%and 2.72%,respectively.With the decrease of axial compression ratio,the ductility of HPC end-reinforced specimens increases by 22.26%;the yield load and peak load of HPC end reinforced specimens increase by 13.01%and 11.14%,respectively,and the ductility increases by 16.91%by increasing the belly cavity concrete strength grades.