自密实混凝土T形短肢剪力墙抗震性能试验及ANSYS分析

Seismic Performance Experiment and ANSYS Analysis of the Self-compacting Concrete T-shaped Short-leg Shear Wall

基于5片自密实混凝土T形截面短肢剪力墙试件的低周反复荷载试验,分析了轴压比、配箍率、肢厚比对构件承载力及延性等抗震性能的影响。利用ANSYS将计算的荷载-位移曲线与试验的骨架曲线进行对比分析,结果表明两者符合较好,验证了该有限元模型的合理性,进一步探究了轴压比、剪跨比、混凝土强度和纵筋配筋率的变化对墙体承载能力和变形的影响。结果表明:通过合理选择参数,能使短肢剪力墙具有良好的承载能力和变形能力。

Five specimens of the self-compacting concrete T-shaped short-leg shear wall subjected to low cycle loading were conducted. Based on experimental study,the influence of axial compression ratio,stirrup ratio and the type of sections to bearing capacity,ductility and other seismic performance of specimens was analyzed. The calculated force-displacement curves are in good agreement with that of experiments,which verify the rationality of the nonlinear finite element model. The effect of different axial compression ratio,shear span ratio,concrete strength and longitudinal reinforcement ratio to bearing capacity and deformation of wall are further explored. The results show that the short-leg shear wall has good bearing capacity and deformation ability in reasonable parameters.