摘要
碳纤维片材(CFRP)具有轻质、高强度、耐腐蚀等性能,外贴碳纤维片材正成为一项越来越具有吸引力的混凝土结构加固技术.基于混凝土结构设计规范中抗弯设计计算的基本原理,提出了外贴碳纤维片材加固混凝土梁截面延性的计算方法,并讨论了其影响因素.结果表明,CFRP用量及其滞后应变是影响梁加固后延性的主要因素,加固梁的破坏类型不同,CFRP用量对延性的影响也不同.
Carbon Fiber Reinforced Polymer (CFRP) possesses many good performances such as lightness in weight, high strength and high corrosion resistance. Externally bonding CFRP to the concrete structures is becoming an attractive technology. Based on the fundamental theory of flexural design calculation of concrete structure, a calculation method of cross section ductility of concrete beam strengthened by CFRP was presented, and the influencing factors on it were discussed. The results show that the quantity of CFRP and its lagged strain are the most important factors influencing the ductility. The influence of the quantity of CFRP on the ductility varies with failure types of the strengthened beam.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2004年第6期712-716,共5页
Journal of China University of Mining & Technology
基金
国家自然科学基金项目(50378015)
