织物增强混凝土增强砖砌体抗剪性能研究  

RESEARCH ON SHEAR PERFORMANCE OF BRICK MASONRY REINFORCED WITH TRC

作　　者：田稳苓 魏延凯[1] 孟毅远 TIAN Wenling;WEI Yankai;MENG Yiyuan(School of Civil and Transportation Engineering,Hebei University of Technology,Tianjin 300401,China;Technology and Research Center of Civil Engineering,Hebei Province,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]河北工业大学,河北省土木工程技术研究中心,天津300401

出　　处：《工业建筑》2018年第7期71-76,共6页Industrial Construction

基　　金：河北省自然科学基金(E2014202178)

摘　　要：通过对6组18个TRC增强砖砌体试件进行通缝截面抗剪试验,分析TRC中纤维编织网排布方式、层数、表面黏砂及基体中加入短切PVA纤维改性等因素对砖砌体抗剪性能的影响。试验结果表明：用TRC增强砖砌体可明显提高砌体抗剪强度;经向纤维与竖向灰缝夹角为90°的排布方式的试件平均抗剪强度提高了15.4%,斜向的排布方式的试件平均抗剪强度提高了21.7%;在一定范围内,增加纤维编织网的层数可以提高砖砌体抗剪强度;在纤维编织网表面黏砂可以提高砖砌体的延性;TRC基体中加入短切PVA纤维对提高砖砌体抗剪强度有影响,但影响程度较小。基于定滑轮原理,并考虑摩擦力,给出了TRC增强砖砌体的抗剪强度公式,计算结果与试验结果吻合较好。The tests of masonry shear strength along mortar joints on 6 groups of 18 TRC reinforced brick masonry specimens were carried out. The effects of textile arrangement,the layer number of textile,textile covered with sands and TRC substrate that was modified by adding PVA chopped fiber on brick masonry shear performance were investigated. The results showed that： the strength of brick masonry strengthened by TRC had significantly improved.The average shear strength of brick masonry that angle of longitude fibers in TRC and vertical mortar joint was 90°increased by 15. 4% and the shear strength specimens that oblique arrangement increased by 21. 7%. In a certain range,increasing the layer number of textile could improve the shear strength of brick masonry. The textile covered with sands could improve the ductility of brick masonry. It had a little effect on masonry shear strength when added PVA chopped fiber into TRC substrate. The shear strength formula of TRC strengthen brick masonry was put forward based on the principle of fixed pulley and considering the friction. The results of the calculation were in good agreement with that of experiments.

关 键 词：TRC 增强 砖砌体 通缝截面抗剪试验 抗剪强度 

分 类 号：TU362[建筑科学—结构工程]