外贴碳纤维增强材料加固混凝土梁的抗弯设计.pdfVIP

1 2 Vol. 1 200504 Chinese Journal of Underground Space and Engineering Apr.2005 : 1673-0836(2005)02-0250-05 外贴碳纤维增强材料加固混凝土梁的抗弯设计X 吴志平 , 杨林德 ( , 200092) :根据目前碳纤维增强材料(简称CFRP) 加固混凝土梁的理论和实验 究结果; 文 章重点 究碳纤维制成织物片材粘贴到混凝土表面用于结构的补强与加固的技术特点, 基于 平截面假定的抗弯承载力计算理论, 对CFRP 加固混凝土梁受弯抵抗承载力的计算方法做了 分析探讨,并分析二次受力对加固结构的弯矩承载力的影响; 同时对外贴碳纤维加固混凝土梁 的抗弯提供一种简单实用的设计方法; 理论计算和试验结果比较吻合, 可供工程设计参考 : 碳纤维增强材料; 抗弯; 预加荷载; 加固; 设计方法 :TU311.4 :A Bending Design for Concrete Beam Strengthened with Carbon Fibre Reinforced Plastics 1 2 WU Zh-i ping , ANG Lin- De ( Dep artment of Geotechnical E ng ineering , Tongj i Univ ersity , Shanghai 200092, China) Abstract: Based on the current experimental study results andtheory of concrete beams strengthened with carbon fiber reinforced plastics, with theoreticalmethod based on the assumption of plane section, in this paper mainly the technologies of bending carbon fiber reinforced plastic ( CFRP) plates or fabrics to theweb of reinforced concrete beams are introduced, as well as considering the preloading effect to the bending capacity of the reinforced concrete beams. Analysis and investiga- tion of the flexural strengthening capacity of concrete beams strengthened in bending with carbon fiber reinforced plastics are carried out. Finally, a kind of new practical method considering the preloading effect to the bending capacity of the rein- forced concrete beams is put forward, the method can be used to design the concrete beams strengthened in bending with carbon fiber reinforced pla