【作者】 王晓波； 周侃； 叶勇； 韩林海； 高继领；

【Author】 Wang Xiaobo;Zhou Kan;Ye Yong;Han Linhai;Gao Jiling;Jiangsu Huning Steel Mechanism Co.,Ltd.;Department of Civil Engineering,Tsinghua Unirersity;

【机构】 江苏沪宁钢机股份有限公司； 清华大学土木工程系；

【摘要】 合某实际工程典型的钢-混凝土组合柱的钢结构加工工艺,本文建立可考虑钢结构焊接残余应力的有限元模型。分析并得到了钢结构的残余应力的大小和分布,并采用已有试验数据验证模型的有效性。考虑钢结构残余应力的影响,对钢-混凝土组合柱的轴压性能进行全过程分析。分析结果表明,钢结构残余应力对钢-混凝土组合柱的极限承载力影响较小,且使其使用阶段轴压刚度降低约2.49%。本文的分析方法可辅助优化钢结构加工工艺,并为其它类似工程提供参考。更多还原

【Abstract】 Based on the processing technology of the steel component in a typical steel-concrete composite column used in a practical project,this paper establishes a finite element analysis(FEA) model capable of considering the residual stress in steel.The magnitude and distribution of residual stress in steel component are analyzed and obtained.The FEA model is validated against existing test data.Then the full-range analysis is conducted on the axial behavior of the steel-concrete composite column considering the influence of residual stress in steel.It is found that the residual stress in steel has a minor influence on the load carrying capacity of the steel-concrete composite column,and reduces its axial stiffness in service stage by 2.49%.This method can optimize and determine the processing technology of steel component,and provide reference for other similar projects.更多还原