土坯砖砌体抗剪性能研究  

Study on shear behavior of adobe brick masonry

作　　者：周铁钢[1] 张再昱 谭伟 艾腾 刘时雨 于兴保 ZHOU Tiegang;ZHANG Zaiyu;TAN Wei;AI Teng;LIU Shiyu;YU Xingbao(School of Civil Engineering,Xi an University of Architecture and Technology,Xi an 710055,China)

机构地区：[1]西安建筑科技大学土木工程学院

出　　处：《四川建筑科学研究》2019年第6期60-64,共5页Sichuan Building Science

基　　金：“十二五”国家科技支撑计划课题(2014BAL06B03);陕西省重点科技创新团队计划(2014KCT-31)

摘　　要：土坯砖分为实心砖和开孔砖。为了研究两种土坯砖砌体抗剪性能,对42个土坯砖砌体进行了沿通缝抗剪试验,主要研究灰浆种类和土坯砖种类等参数对砌体抗剪强度的影响,根据试验所得结果分析了砌体受剪破坏特征和破坏机理。结果表明,两种土坯砖砌体呈脆性破坏,在砖块受剪破坏与砖块、灰浆和粘结面混合破坏形态下,砖的孔洞对砌体抗剪强度影响显著,并且土坯实心砖砌体的抗剪强度明显高于开孔砖砌体的抗剪强度。采用最小二乘法对砌体规范公式进行了修正,得到了土坯砖砌体抗剪强度平均值的计算公式,试验结果与计算值较为吻合。The adobe bricks are divided into solid bricks and open hole bricks.In order to study the shear resistance of two kinds of adobe brick masonries,the shear tests of 42 adobe brick masonries along the joints are mainly carried out to study the masonry shear resistance by parameters such as mortar type and adobe brick type.According to the influence of strength,the shear failure characteristics and failure mechanism of masonry are analyzed.The results show that the two kinds of adobe brick masonries are brittle and damage,and the bricks are damaged by shearing and mixed damage of bricks,mortar and bonding surfaces.In the form,the hole of the brick has a significant influence on the shear strength of the masonry,and the shear strength of the solid brick masonry is significantly higher than that of the open hole brick masonry.The masonry standard formula was modified by the least squares method,and the calculation formula of the average shear strength of the adobe brick masonry was obtained.The experimental results were in good agreement with the calculated values.

关 键 词：土坯砖砌体 土坯开孔砖 砌体抗剪强度 砌体相关系数 力学性能指标 

分 类 号：TU522.11[建筑科学—建筑技术科学]