建筑结构学报2017，Vol.38Issue(11)：159-165,7.DOI:10.14006/j.jzjgxb.2017.11.018
CFRP加固冷弯薄壁槽钢短柱偏心受压承载力试验研究
Experimental study on stability capacity of cold-formed thin-wall short steel channel columns reinforced with CFRP under eccentric compression
摘要
Abstract
To study the stability capacity of short cold-formed thin-walled channel columns reinforced with CFRP,the eccentric compression loading test was carried out on specimens with webs and flanges reinforced by CFRP.Seven columns were all 750 mrn long,included one specimen without CFRP and six strengthened with 50 mm width CFRP.The CFRP spacing was divided into 50 mm,100 mm and 150 mm.The CFRP layer had two kinds,one and two layers.The experimental results show that the local buckling of two members reinforced with two layers CFRP whose spacing are 50 mm and 100 mm happen after the global buckling,but the rest members are found reversely.All the local buckling and bearing capacity of the reinforced members are improved to different degrees.Meanwhile,when the ratio of CFRP spacing to web height is less than 1,the reinforced effect is significant,and the reinforcement effect of the specimens wrapped with two layers CFRP is better than the others wrapped with one layer CFRP.As for the specimens with CFRP spacing of 50 mm and CFRP layer of 2,the increased range of stability capacity of eccentric compression is the most significant,which is up to 12.1％.In addition,the eccentric compression properties of all specimens were simulated through ANSYS program,and the test and the numerical results show good agreement.By pasting CFRP,the local buckling of short thin-walled compression-bending members can be delayed.When the number of CFRP layers is the same,the stability capacity is increased when the spacing of CFRP is smaller.关键词
冷弯薄壁槽钢短柱/CFRP/加固/偏心受压试验/局部稳定Key words
cold-formed thin-wall short steel channel column/CFRP/strengthen/eccentric compression test/local buckling分类
建筑与水利引用本文复制引用
唐红元,王灿军,潘毅,郭瑞..CFRP加固冷弯薄壁槽钢短柱偏心受压承载力试验研究[J].建筑结构学报,2017,38(11):159-165,7.基金项目
国家重点研发计划(2016YFC0802205),国家自然科学基金(51108389). （2016YFC0802205）
