碳纤维布增强开孔混凝土板的受力性能  

Mechanical property analysis of concrete plate with openings strengthened by CFRP

作　　者：刘硕敏[1] 刘荣桂[1] 张益多[1] 朱红梅[1] 陈妤[1] 

机构地区：[1]江苏大学理学院,江苏镇江212013

出　　处：《江苏大学学报（自然科学版）》2006年第3期270-273,共4页Journal of Jiangsu University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50178018);教育部PC/RC重点实验室资助项目

摘　　要：推导了碳纤维加固开孔平板开裂荷载和极限荷载的计算公式,该式简洁易用且计算结果和试验结果吻合较好.同时采用有限元方法对碳纤维增强钢筋混凝土开孔平板在均布荷载作用下的受力特性进行了分析,并与试验结果进行了比较.结果表明,选择合理的有限元数值模型,可以较好地模拟碳纤维增强钢筋混凝土开孔平板的受力性能.根据数值分析结果,对加固后的受力机理进行了探讨,讨论了采用碳纤维加固后对钢筋的影响,同时也分析了开孔大小、位置和碳纤维层数对受力性能的影响.The calculating formula of the cracking load and ultimate load for plates with openings strengthened by CFRP was deduced. The calculation result was identical with test result. The analysis of the reinforcement concrete plates with openings bearing the uniform load strengthened by CFRP with the method of FEA was compared with the test result. The simulation result indicates that it is important to select reasonable FEA model to fairly simulate the reinforcement concrete plates with openings strengthened by CFRP. Based on the simulation result, the mechanics after strengthening, especially the influence of the steels strengthened by CFRP, the size, position and the number of piles for CFRP are discussed.

关 键 词：混凝土 碳纤维 加固 开孔平板 有限元 应力分布 受力性能 

分 类 号：TU378[建筑科学—结构工程]