CFRP加固一端固定一端铰支柱临界力分析计算  

Analysis on Crippling Force for Column with one Fixed and Other Hinged Reinforced with CFRP

作　　者：王彦勋[1] 王兴国[1] 葛楠[1] 陈海彬[1] 曹素卿[1] 

机构地区：[1]河北联合大学河北省地震工程研究中心,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2013年第3期93-95,105,共4页Journal of Hebei Polytechnic University:Social Science Edition

基　　金：国家自然科学基金资助项目(51078124);河北省自然科学基金资助项目(E2012401052)

摘　　要：利用能量法推求了一端固定一端铰支柱两端用碳纤维加固后的的临界力,结果表明用碳纤维加固后构件的临界力有所提高。随着长细比的减小,临界力的提高比例大致成正比例减小,说明长细比较大的构件比长细比较小的构件稳定性增强效果明显;相同长细比,下端加固碳纤维布比上端加固碳纤维布的临界力的提高比例大约高5倍,说明下端加固效果较上端加固效果好。The crippling force for the column reinforced with CFRP（carbon fiber reinforced polymer） was computed with energy method.Result show that Euler force exhibits increase after retrofitting.With the decrease of the slenderness ratio,the increasing proportion of the crippling force is roughly proportional to decrease.It is suggested that the large slenderness ratio of the member is more obvious than the small slenderness ratio of the member on the aspect of stability enhancement effect.Under the condition of same slenderness ratio,the lower end of the member reinforced with CFRP is 5 times bigger than the upper end of the member reinforced with CFRP about the increasing proportion of the crippling force.It is suggested that the lower end of the member reinforced with CFRP is more better than the upper lower end of the member reinforced with CFRP on the aspect of stability enhancement effect.

关 键 词：临界力 能量法 稳定性 

分 类 号：TU378.3[建筑科学—结构工程]