玻璃纤维增强钢管混凝土组合柱轴压试验及理论研究  

EXPERIMENTAL AND THEORETICAL RESEARCH ON GFRP-CFST COMPOSITE COLUMN UNDER AXIAL COMPRESSIVE LOAD

作　　者：王晓璐[1] 查晓雄[1] 仓友清[1] 余敏[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院,广东深圳518055

出　　处：《工业建筑》2011年第6期25-29,共5页Industrial Construction

摘　　要：为研究玻璃纤维增强(GFRP)钢管混凝土组合柱的受力性能,进行6根外缠GFRP的钢管混凝土轴压短柱和1根钢管混凝土柱的对比试验。结果表明,以外缠GFRP的钢管作为混凝土的约束,将显著提高核心混凝土的承载能力,90°和±45°交叉缠绕GFRP的钢管混凝土组合柱的极限承载力较钢管混凝土柱分别提高40.9%和27.3%。对GFRP钢管混凝土组合柱在轴压荷载下的静力性能进行理论研究,提出组合柱极限承载力设计公式及应力-应变关系的理论模型,其结果与试验值吻合较好。The axial compression tests on six CFST columns reinforced by GFRP and one contrast specimen of CFST column are done in this article,to research the mechanical behavior of this composite member.Experimental results indicate that,the confinement with filament wound reinforced steel tube can greatly enhance the bearing capacity of composite columns.The carrying capacity of the GFRP strengthened CFST column with 90° and 45° fiber orientation can be raised by 40.9% and 27.3% as compared with CFST column.The mechanical performance of composite columns is also discussed in this paper,and the formula of ultimate bearing capacity and simplified model of stress-strain relation of the composite column have been proposed,whose results are in good agreement with the test results.

关 键 词：GFRP 钢管 组合柱 轴压试验 理论模型 

分 类 号：TU398.9[建筑科学—结构工程]