砌体结构双向等比例加载试验研究与数值计算分析  

Experiment Research and Finite Element Analysis on Two-wayproportional Loading of Masonry Structure

作　　者：魏玲玲 阿肯江.托呼提[1] 高全[1] 黄斌[2] 

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830049 [2]湖南大学建筑安全与节能教育部重点实验室,湖南长沙410082

出　　处：《新疆大学学报（自然科学版）》2016年第3期361-368,共8页Journal of Xinjiang University(Natural Science Edition)

基　　金：国家自然科学基金(51468060);新疆维吾尔自治区自然科学基金(2013211A009)

摘　　要：我国《砌体结构设计规范》计算极限承载力参考的是砌体单轴抗压强度,而实际工程中墙体往往处于剪压复合受力状态.文章对墙体进行了双向不同应力路径与不同应力比下的极限承载力试验及数值模拟,采用分离式建模数值计算6片墙片在灰缝倾角θ=00时不同应力比的承载力与试验结果对比,可知试验极限承载力比有限元数值模拟极限承载力小30%时墙体就发生倒塌破坏;数值建模分析在不同灰缝倾角θ=22.50、450、67.50,不同应力比情况下砌体墙片的极限承载力,画出不同灰缝倾角下的破坏包络面,验证了砌筑过程中产生的偏心会影响墙体的极限承载力.In this paper, ＂Masonry structure design code＂ in China refer to the uniaxial compressive strength of masonry. In practical engineering, the wall is often in composite shear stress, so the wall at the different stress path,conducts the experiment and the numerical simulation of the ultimate bearing capacity under different stress ratio. And through the experimental study on the bearing capacity of 6 walls pills found that wall under eccentric load with the ash seam inclination angle θ = 00, the finite element numerical simulation of ultimate bearing capacity is bigger than the experiment of ultimate bearing capacity 30%,the wall collapse destroyed.Through the finite element numerical simulation in different stress ratio the ultimate bearing capacity of the masonry wall piece are analyzed and calculated by different ash seam inclination of cases θ = 22.50, 450, 67.50, and draw the failure envelope under different ash seam dip angle,and verify the eccentricity generated during the laying process which will influence the ultimate bearing capacity of the wall.

关 键 词：砌体结构 双向等比例加载 极限承载力 有限元 破坏包络面 

分 类 号：TU362[建筑科学—结构工程]