近海大气环境下砖砌体组合墙抗震性能试验  

Research on seismic behavior of brick composite walls under coastal atmosphere environment

作　　者：郑山锁[1] 郑淏[1] 牛丽华[1] 明铭 Zheng Shansuo;Zheng Hao;Niu Lihua;Ming Ming(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：《华中科技大学学报（自然科学版）》2018年第11期92-98,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家科技支撑计划资助项目(2013BAJ08B03);国家自然科学基金资助项目(51678475);陕西省重点研发计划资助项目(2017ZDXM-SF-093)

摘　　要：为研究近海大气环境下构造柱-圈梁约束砖砌体组合墙的抗震性能,以4榀组合单墙片和4榀组合双墙片试件作为研究对象,对试件进行了室内加速腐蚀试验,进而对其进行低周往复加载试验,观察砖砌体组合墙试件的破坏过程与特征,分析腐蚀循环作用对其荷载-位移滞回曲线、骨架曲线、刚度退化和耗能能力等抗震性能的影响.试验结果表明：试件破坏形式最终均为脆性剪切破坏;腐蚀循环作用对砖砌体组合墙试件的破坏形态有一定影响;随着腐蚀循环次数的增加,试件的极限承载力、初始刚度、耗能能力均表现出不同程度的退化;组合双墙片试件的抗震性能优于组合单墙片试件,其材料性能得以较为充分地发挥,墙体内应力分布更加均匀,刚度退化速率相对较慢.In order to study the seismic behaviors of composite walls made of reinforced concrete and brick masonry in the coastal atmosphere environment,quasi-static tests of four pieces of single-span combined walls and four pieces of double-span combined walls corroded by artificial climate accelerated corrosion test technique were carried out.The failure process and characteristics were observed and the influence of different corrosion cycles on displacement-load hysteretic curve,skeleton curve,strength and stiffness degradation and energy dissipation capacity were studied.Experiment results show that final failure mode of the specimen is brittle shear failure.The corrosion cycles have a certain influence on the failure mode.The ultimate bearing capacity,initial stiffness and energy dissipation capacity of the specimen decrease gradually with the increase of the number of corrosion cycles.The seismic behaviors of the double-span combined walls are better than that of the single-span combined walls.The material properties of the double-span combined walls can be fully exhibited,the internal stress distribution of the walls is more uniform and the stiffness degradation rate is relatively slow.

关 键 词：砖砌体组合墙 近海大气环境 室内加速腐蚀 拟静力试验 抗震性能 

分 类 号：TU365[建筑科学—结构工程] TU317.1