GFRP管钢骨混凝土偏压构件非线性分析  

Nonlinear analysis of eccentrically loaded members of GFRP tube filled with steel-reinforced concrete

作　　者：秦国鹏[1] 王连广[1] 吴迪[2] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110004 [2]中国建筑东北设计研究院有限公司,辽宁沈阳110006

出　　处：《混凝土》2009年第8期8-11,共4页Concrete

基　　金：国家教育部博士点基金项目(20050145012);辽宁省自然科学基金资助项目(20052019)

摘　　要：为了进一步研究GFRP管钢骨混凝土偏压构件的工作性能,进行5根GFRP管钢骨混凝土构件偏压试验。采用纤维模型法编制非线性分析程序,计算了荷载-变形关系曲线,并与试验曲线进行了对比,计算结果与试验结果吻合得很好。利用非线性分析程序,分析偏心距、混凝土强度和配骨率等主要因素对构件荷载-变形曲线的影响。分析结果表明:构件的承载力随着混凝土强度、配骨率的增加而增大,随着偏心率的增加而降低,且变化幅度相对明显。To analyze the static performance of eccentrically compressed circular GFRP tube filled with steel-reinforced concrete （GSC） members, tests were conducted on five specimens to study the mechanic behavior.Fiber modeling was introduced in creating a nonlinear analysis program to compute the relationship between load and deflection, and the results were compared with the experimental ones in earlier works.The computed results were proved in good agreement with the experimental ones.The influences of concrete strength, slenderness ratio,eccentricity, steel-reinforced ratio on the mechanical property of eccentrically loaded members are analyzed.Also,the corresponding load-deflection curves are drawn from the previous models.The results indicate that the bearing capacity of composite members increased with increasing core concrete strength and steel-reinforced ratio, decreased with increasing eccentricity.

关 键 词：GFRP管 钢骨混凝土 偏心受压 非线性分析 本构模型 

分 类 号：TU528.59[建筑科学—建筑技术科学]