粘结对钢管约束混凝土短柱轴压力学性能影响  

Effect of bond on the axial loaded behavior of tubed concrete stub columns

作　　者：刘景云[1] 孙建波[1] 张小冬[1] 刘界鹏[1] 张素梅[2] 

机构地区：[1]哈尔滨工业大学建筑设计研究院,哈尔滨150090 [2]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《哈尔滨工业大学学报》2010年第8期1211-1215,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50708027);黑龙江省自然科学基金资助项目(E2007-24)

摘　　要：为研究粘结应力对钢管约束高强混凝土短柱轴压力学性能的影响,进行了2组共8个试件的试验研究,包括一组圆钢管约束高强混凝土短柱试件和一组方钢管约束高强混凝土短柱试件.每组试件中包括2个消除钢管与混凝土粘结的试件和2个有粘结试件.采用弹塑性应力分析方法对钢管进行了应力分析.试验结果与钢管应力分析结果表明,消除钢管与混凝土之间的粘结作用可有效降低钢管中的纵向应力,但消除粘结作用对钢管约束高强混凝土短柱的轴压承载力和延性无显著影响,在工程实践中可不必采取措施消除钢管与核心混凝土之间的粘结作用.Two groups of specimens including 8 stub columns were tested to study the effect of bond stress between steel tube and core concrete on the axial loaded behavior of tubed high-strength stub columns（HSC）.Each group included two columns without bond stress and two columns with bond stress.Elastic-plastic analysis on the steel tube during the loading procedure was carried out.The results from test and analysis indicate that the longitudinal stress of the steel tube is evidently decreased in respect that the bond effect is eliminated,while the bond stress has little effect on the axial load strength and ductility of tubed HSC.Therefore it is not necessary to eliminate the bond effect between the steel tube and the core concrete in structural engineering.

关 键 词：粘结应力 钢管约束高强混凝土 短柱 轴压承载力 延性 

分 类 号：TU398[建筑科学—结构工程]