加载方式对生土基砌体抗压性能影响试验研究  

Experimental study on influence of loading modes on compressive properties of earth brick masonry

作　　者：兰官奇 王毅红[1] 牛东东 权登州[1] LAN Guanqi;WANG Yihong;NIU Dongdong;QUAN Dengzhou(School of Civil Engineering,Chang’an University,Xi’an 710061,China)

机构地区：[1]长安大学建筑工程学院

出　　处：《华中科技大学学报（自然科学版）》2019年第11期49-54,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51478043)

摘　　要：通过砌体单轴抗压试验分析了三种不同加载方式对生土基砌体抗压性能的影响,基于层次分析法确定了生土基砌体抗压强度测试的最优加载方式.研究结果表明:采用欧盟标准及改进国标进行加载,试件多发生竖向裂缝贯穿破坏,而美标加载方式下的试件多发生局部破坏;在三种加载方式中,改进国标加载方式下试件的抗压强度均值最小,分别为欧标及美标所测抗压强度均值的94%和82%;改进后的国标加载方式在试件受力状态、数据稳定性及完整性方面均存在优势,建议采用该加载方式测试生土基砌体的抗压强度.The compressive test of masonry prism was conducted to investigate the influence of three different loading modes on the compressive performance of earth brick masonry.Based on the analytic hierarchy process,the optimum loading mode for measuring the compressive strength of earth brick masonry was determined.Research results show that loading with the European standards and improved Chinese standards would lead to the vertical crack penetration failure,and the local failure occurs mainly in the specimens loaded with American standards.The average compressive strength under the improved Chinese Standards is the lowest,which is 94% and 82% of those measured by the European standards and American standards,respectively.The improved Chinese standards show advantages in terms of integrity and stability of test data,and stress state of specimens,so it is suggested to use the improved Chinese standards to measure the compressive strength of earth brick masonry.

关 键 词：生土材料 砌体 抗压强度 加载方式 层次分析法 

分 类 号：TU361[建筑科学—结构工程]