GFRP管钢骨混凝土受弯构件受力性能研究  

Mechanical behavior of flexural 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9期59-61,共3页Concrete

基　　金：国家教育部博士点基金项目(20050145012)

摘　　要：为进一步研究GFRP管钢骨混凝土组合构件的抗弯性能,进行了3根GFRP管钢骨混凝土构件的抗弯试验。采用纤维模型法编制非线性分析程序,计算了弯矩-曲率关系曲线,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。利用非线性程序,分析GFRP管壁厚度、混凝土强度、配骨率等主要参数对构件弯矩-曲率曲线的影响。分析结果表明:组合构件的抗弯承载力随着混凝土强度的增加而增大,随着GFRP管壁厚度的增加而增加,且变化幅度相对明显。基于对计算和试验结果的分析,给出了GFRP管钢骨混凝土构件的抗弯承载力计算公式,并通过试验进行验证,理论计算结果与试验结果吻合良好。Tests were conducted on three specimens to study the flexural behavior.Based on theory of fiber model method, a nonlinear analysis of computer program is developed, which was used to calculate the section moment-curvature curves, and the result is compared with the experimental one＇s in earlier works.The computed results were proved in good agreement with the experimental one＇s.The influences of GFRP tube thickness, strength of concrete, steel-reinforced ratio on the mechanical property of bending members are analyzed based on previous analysis program. The results indicate that the beating bending capacity of composite members increased with thickness of GFRP tube, and increased with core concrete strength.According to the test study and theory analysis, a calculation formula of GFRP tube column filled with steel-reinforced concrete subjected to bending moment was presented.The calculation results agree well with text results.

关 键 词：GFRP管 钢骨混凝土 非线性分析 抗弯承载力 计算公式 

分 类 号：TU528.571[建筑科学—建筑技术科学]