碳纤维加固开洞砖墙试验分析  

Experiment and analysis of CFRP strengthened brick walls with openings

作　　者：张维[1] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2008年第6期75-78,82,共5页Engineering Journal of Wuhan University

基　　金：湖北省自然科学基金项目(编号:2004ABA042);武汉市青年科技晨光计划项目(编号:20035002016-30)

摘　　要：对开洞口砖墙试件往复加载的试验结果进行了有限元分析,分别用混凝土单元和多层壳单元模拟砌体、粘结胶和碳纤维布.分析表明有限元模型能较好地揭示碳纤维加固墙体往复荷载作用下的力学性能,其中混凝土单元能较好地反映砌体应力分布、裂缝分布及材料压碎状况,多层壳单元能有效模拟碳纤维布及粘结胶的层理构造、交叉重叠,并能直观描绘各层材料的应力分布状况,对试验研究及工程实践均有重要意义.Carbon fiber reinforced polymer （CFRP） is currently all simulated with membrane elements in finite element analyses of CFRP strengthened structures ignoring adhesive thicknesses and layer constructions of CFRP and adhesive glue, which differs greatly from the real construction and is improved substantially. The finite element analyses are done of the experimental outcomes of the brick wall members with openings under reciprocating horizontal loads simulating masonry, adhesive and CFRP with concrete and laminate shell elements respectively. The analyses show that the finite element models can disclose well the mechanical performances of CFRP strengthened wails under reciprocating horizontal loads; the concrete elements in the models can depict well masonry stresses, cracks and crushing; and the laminate shell elements can effectively simulate the layer constructions, crossing and overlapping, and depict straightforwardly stresses in each layer of adhesive and CFRP. The analyses are significant for both the experimental researches and project constructions.

关 键 词：砖墙 碳纤维布加固 有限元分析 试验研究 

分 类 号：TU362[建筑科学—结构工程]