铸钢分叉节点基于分管破坏模式的承载性能研究
|
摘要
为理解树状柱结构中的铸钢分叉节点单支分管受压时的受力性能,对1个典型的铸钢三分叉节点进行了单支分管受压的数值模拟分析,分析了节点的最大应力及其分布位置,总结了节点单支分管破坏的典型模式,进而提出了基于分管破坏的节点承载力计算公式。研究结果表明,单支分管受压时节点的破坏是在受压分管一侧沿主分管交汇处发生局部屈曲破坏,基于分管破坏模式的承载力计算公式可为单支分管受荷载较大的铸钢分叉节点的设计提供参考。
In order to understand force performances about the single branch under compression load of the cast-steel joint with branches in the tree-like column structures. Numerical simulation analysis about the single branch pipe under compression load of a typical cast-steel joint with three branches was carried out. The maximum stress and its distribution were analyzed. The typical failure mode of the single branch pipe was summarized. And then, the formula of calculating the load-carrying capacity of the joint based on the failure model was put forward. The results show that the destruction of the single branch pipe under compression of the joint was in the compression side of the branch pipe, and the local buckling failure occurred in the confluence between the main pipe and branch pipe. The proposed calculation formula of load-carrying capacity based on the branch pipe failure mode can provide a reference for the design of the single branch pipe under large load of the cast-steel joint with branches.
In order to understand force performances about the single branch under compression load of the cast-steel joint with branches in the tree-like column structures. Numerical simulation analysis about the single branch pipe under compression load of a typical cast-steel joint with three branches was carried out. The maximum stress and its distribution were analyzed. The typical failure mode of the single branch pipe was summarized. And then, the formula of calculating the load-carrying capacity of the joint based on the failure model was put forward. The results show that the destruction of the single branch pipe under compression of the joint was in the compression side of the branch pipe, and the local buckling failure occurred in the confluence between the main pipe and branch pipe. The proposed calculation formula of load-carrying capacity based on the branch pipe failure mode can provide a reference for the design of the single branch pipe under large load of the cast-steel joint with branches.
引文
[1]贾连光,杜钦钦,李庆钢.斜交网格结构铸钢节点承载力有限元分析[J].沈阳建筑大学学报(自然科学版),2011,27(5):852–858.
[2]吴卫华,杜文风.树状柱结构空间四分叉铸钢节点受力性能分析[J].河南大学学报(自然科学版),2011,44(6):738–742.
[3]刘钊,贺志启,苏俭.铸钢节点在轻型桥梁结构中的应用研究[J].世界桥梁,2011,19(5):31–34.
[4]ZHAO X L,TONG L W.New development in steel tubular Joints[J].Advances in Structural Engineering,2011,14(4):699–715.
[5]孙志飞.树状结构分叉节点理论研究[D].开封:河南大学,2014.
[6]杜文风,孙志飞,高博青,等.树状结构三分叉铸钢节点有限元分析[J].建筑结构学报,2014,35(S1):89–94.
[7]吴卫华,董正方,杜文风.树状结构空间四分叉铸钢节点抗弯极限承载力分析[J].河南大学学报(自然科学版),2015,45(4):482–486.
[8]范重,杨苏,栾海强.空间结构节点设计研究进展与实践[J].建筑结构学报,2011,32(12):1–15.
[9]HUNT J,HAASE W,SOBEK W.A design tool for spatial tree structures[J].Journal of the International Association for Shell and Spatial Structures,2009,50(1):3–10.
[10]TANG K K.Evolution of plastic damage in welded joint of steel truss with pre-existing defects.Theoretical and Applied Fracture Mechanics[J].2010,54(2):117–126.
[11]邓岳保,谢康和,夏建中.基于参变量变分原理的地基梁位移非线性分析[J].建筑结构学报,2012,33(4),142–147.
[12]张朝,陈华周,钱焕,等.天津梅江会展中心铸钢节点有限元分析[J].钢结构,2010(11),19–22.
[13]王朝波,赵宪忠,陈以一,等.上海铁路南站外柱异形铸钢节点承载性能研究[J].土木工程学报,2008,41(1):18–23.
[2]吴卫华,杜文风.树状柱结构空间四分叉铸钢节点受力性能分析[J].河南大学学报(自然科学版),2011,44(6):738–742.
[3]刘钊,贺志启,苏俭.铸钢节点在轻型桥梁结构中的应用研究[J].世界桥梁,2011,19(5):31–34.
[4]ZHAO X L,TONG L W.New development in steel tubular Joints[J].Advances in Structural Engineering,2011,14(4):699–715.
[5]孙志飞.树状结构分叉节点理论研究[D].开封:河南大学,2014.
[6]杜文风,孙志飞,高博青,等.树状结构三分叉铸钢节点有限元分析[J].建筑结构学报,2014,35(S1):89–94.
[7]吴卫华,董正方,杜文风.树状结构空间四分叉铸钢节点抗弯极限承载力分析[J].河南大学学报(自然科学版),2015,45(4):482–486.
[8]范重,杨苏,栾海强.空间结构节点设计研究进展与实践[J].建筑结构学报,2011,32(12):1–15.
[9]HUNT J,HAASE W,SOBEK W.A design tool for spatial tree structures[J].Journal of the International Association for Shell and Spatial Structures,2009,50(1):3–10.
[10]TANG K K.Evolution of plastic damage in welded joint of steel truss with pre-existing defects.Theoretical and Applied Fracture Mechanics[J].2010,54(2):117–126.
[11]邓岳保,谢康和,夏建中.基于参变量变分原理的地基梁位移非线性分析[J].建筑结构学报,2012,33(4),142–147.
[12]张朝,陈华周,钱焕,等.天津梅江会展中心铸钢节点有限元分析[J].钢结构,2010(11),19–22.
[13]王朝波,赵宪忠,陈以一,等.上海铁路南站外柱异形铸钢节点承载性能研究[J].土木工程学报,2008,41(1):18–23.