钢管混凝土轴压与纯弯荷载—变形关系曲线实用计算方法研究  

Research on applied calculation method of load versus deformation relation curve of CFST subjected to axial compression and pure bending

作　　者：尧国皇[1] 韩林海[1] 

机构地区：[1]福州大学土木建筑工程学院,福建福州350002

出　　处：《中国公路学报》2004年第4期50-54,共5页China Journal of Highway and Transport

基　　金：建设部科学计划项目(04 2 151);福建省重大科技项目(2002H007)

摘　　要：在数值计算和试验研究成果的基础上,探讨了钢管混凝土轴压强度承载力和抗弯承载力指标取值问题。在大范围参数分析的基础上,通过分析荷载—变形全过程关系各阶段的力学性能和特点,提出了钢管混凝土轴压σsc ε关系和纯弯M φ关系全过程曲线的实用计算公式,实用计算公式的计算结果与数值计算结果、试验结果吻合较好。最后提出了钢管混凝土轴压强度、抗弯承载力和抗弯刚度的简化计算公式,简化计算公式的计算结果与大量试验结果吻合较好。Based on theoretical method and test results, the indexes of bearing capacity of concrete filled steel tube subjected to axial compression and pure bending are discussed. Based on the large range parametric analysis, the simplified models of stress versus strain relations curves and moment versus curvature relations curves are presented. Then,the simplified formula of axial bearing capacity, bending bearing capacity and flexural rigidity are provided by regression. Comparisons of calculation results using simplified method show a good agreement with test results. The conclusions in this paper may be referred to practical engineering.

关 键 词：桥梁工程 钢管混凝土 数值计算方法 轴压 纯弯 承载力 抗弯刚度 

分 类 号：U441[建筑科学—桥梁与隧道工程]