不同高宽比下自保温榫式砌块灌芯砌体墙抗震性能数值模拟研究  

Numerical Simulation Research on Seismic Performance of Full-grouted Insulation Tenon Style Block Masonry Wall Under Different Aspect Ratio

作　　者：徐云 XU Yun(Shanghai Baoye Group Co.,Ltd.,Shanghai 200941,China)

机构地区：[1]上海宝冶集团有限公司,上海200941

出　　处：《施工技术（中英文）》2022年第3期64-67,共4页Construction Technology

基　　金：湖南省高校科技成果产业化培育项目(11CY008)。

摘　　要：为研究不同高宽比对自保温榫式砌块灌芯砌体墙抗震性能的影响,在数值模拟分析结果与试验结果较吻合的基础上,将试验墙体模型高宽比1.875改为1.250,0.938,进行低周往复水平荷载作用下3种高宽比砌体墙数值模拟分析,对墙体破坏形态、滞回曲线、骨架曲线、位移延性系数、刚度退化等进行研究。研究结果表明,不同高宽比下,自保温榫式砌块灌芯砌体墙均表现出弯曲破坏特征,滞回曲线均较对称,均表现出“捏缩”效应;高宽比越大,砌体墙滞回环和骨架曲线越偏向于位移轴,变形越大,承载力越低,位移延性系数越大,抗震效果越好,刚度退化曲线越平缓;高宽比越小,砌体墙滞回环和骨架曲线越偏向于荷载轴,承载力越大。In order to study the influence of the different aspect ratio for seismic performance of full-grouted insulation tenon style block masonry wall,on the basis of numerical simulation results and experimental results consistent over,the test wall model of the aspect ratio1.875 was changed to the two kinds of the wall model of aspect ratio 1.250 and 0.938,and it carried on numerical simulation under low cyclic horizontal load.This paper studied the failure mode of the wall,hysteresis curve,skeleton curve,displacement ductility coefficient,stiffness degradation,etc.The research results show that under different aspect ratios,the full-grouted insulation tenon style block masonry walls show the characteristics of bending failure,the hysteresis curves are all symmetrical,and all show the pinch effect.When the aspect ratio is larger,the hysteresis loop and skeleton curve are more inclined to the displacement axis,the deformation is larger,the bearing capacity is lower,the displacement ductility coefficient is increased,and the seismic effect is better,the stiffness degradation curve of the masonry wall is smoother.When the aspect ratio is smaller,the hysteresis loop and skeleton curve are more inclined to the load axis,the bearing capacity is larger.

关 键 词：砌体结构 砌体墙 混凝土 钢筋 抗震性能 数值模拟 

分 类 号：TU352[建筑科学—结构工程]