高强冷弯矩形截面钢管混凝土柱偏压性能试验  

Experimental Study on Eccentrically-Compressed Performance of High-Strength Cold-Formed Rectangular-Section CFST Columns

作　　者：黄泳水 张继承[1,2] 饶玉龙 李勇 申兴月[1,2,3] 吕宇莎 HUANG Yongshui;ZHANG Jicheng;RAO Yulong;LI Yong;SHEN Xingyue;LU Yusha(School of Urban Construction,Yangtze University,Jingzhou 434023,China;Research Institute of Structural Engineering and Disaster Reduction,Yangtze University,Jingzhou 434023,China;Wuhan Construction Engineering Company Limited,Wuhan 430000,China;Hebei Institute of Building Architectural Design Limited Company,Shijiazhuang 050000,China)

机构地区：[1]长江大学城市建设学院,湖北荆州434023 [2]长江大学结构工程与防灾研究所,湖北荆州434023 [3]武汉建工集团股份有限公司,湖北武汉430000 [4]河北建研建筑设计有限公司,河北石家庄050000

出　　处：《华侨大学学报（自然科学版）》2019年第2期179-185,共7页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(51778065);湖北省教育厅科学技术研究项目(D20151304)

摘　　要：为研究高强冷弯矩形截面钢管混凝土柱(CFST)在偏心受压荷载作用下的力学性能,对Q420型高强冷弯钢设计制作的矩形截面钢管混凝土柱进行偏心受压试验,获得试件在偏压荷载作用下的破坏形态、跨中挠度及应变分布规律,并分析不同参数对试件偏心受压承载能力的影响.试验结果表明:高强冷弯矩形截面钢管混凝土柱的偏心受压性能受长细比、偏心率和宽厚比等参数影响较为明显,长细比、偏心率和宽厚比越大,高强冷弯矩形截面钢管混凝土柱的偏心受压承载能力越小.In order to investigate the mechanical performance of high-strength cold-deformed rectangular-section concrete-filled steel tubular(CFST)columns under eccentric compression loading,the specimens were designed and manufactured using Q420 high-strength cold-formed steel,the eccentric compression experiments were conducted to obtain the failure mode,mid-span deflection,strain distribution.The effects of different parameters on the eccentric compressive bearing capacity of the specimens were investigated.The experimental results show that:the eccentrically-compressed performance of high strength cold-formed rectangular-section CFST columns is significantly affected by the slenderness ratio,eccentricity ratio and width-thickness ratio.As the slenderness ratio,eccentricity ratio and width-thickness ratio increase,the eccentric compressive bearing capacity of high strength cold-formed rectangular section CFST columns decreases.

关 键 词：高强冷弯钢管 钢管混凝土柱 偏压性能 承载力 

分 类 号：TU392.3[建筑科学—结构工程] TU317.1