不同参数型钢高性能混凝土剪力墙抗震性能研究

STUDY ON THE SEISMIC BEHAVIOR OF STEEL HIGH-PERFORMANCE-CONCRETE SHEAR WALLS WITH DIFFERENT PARAMETERS

该文研究型钢高性能混凝土(SHPC)剪力墙在不同参数影响下的抗震性能,采用纤维墙元模型对SHPC剪力墙进行数值分析,并将数值分析结果与试验结果进行对比,验证了纤维墙元模型的合理性和可靠性。在此基础上,分析了轴压比、边缘构件约束区长度及型钢配钢率对SHPC剪力墙抗震性能的影响,结果表明,SHPC剪力墙承载能力随轴压比的增大而提高,变形能力随轴压比的增大而降低,当设计轴压比达到0.5时,其位移延性系数小于3;对于高轴压比SHPC剪力墙,适当增加边缘构件约束区长度,试件的变形能力有所改善;型钢配钢率的变化对承载能力的影响比对变形能力的影响更为显著。

The study on the seismic behavior of steel high-performance-concrete（SHPC） shear walls with different parameters was performed in this paper.The fiber wall element model was used to analyze the seismic characteristics of SHPC walls.The results of numerical simulation are agreement with experimental results and it proves that the fiber wall element model is reasonable in the nonlinear analysis of SHPC shear walls.Also,some parameters on the seismic behavior of SHPC shear walls were analyzed,such as the axial load ratio,the length of restricted edge members and ratio of steel.The analysis results showed that the bearing capacity of SHPC shear walls is improved with the increase of the axial compression ratio.The deformation capability of the SHPC shear walls decreases rapidly with the increase of the axial compression ratio.Moreover,when the value of axial compression ratio reached to 0.5,the displacement ductility ratio is less than 3.0.The deformation capability of the SHPC shear walls under a high axial load ratio improves with the increase of the length of restricted edge members.The bearing capability of SHPC shear walls improves with the increase of the steel ratio;however,the deformation capability improves not so significantly.