期刊文献+

方钢管焊接T型节点轴向静力性能研究 被引量:6

The static performance of axially loaded,square tubular T-joints
原文传递
导出
摘要 采用试验实测的方法,研究不同支管与主管宽度比(β)方钢管焊接T型节点的静力承载机理和破坏形态,并对节点的变形特点、应变分布、荷载-位移曲线进行分析.结果表明:方钢管焊接节点在支管轴向压力作用下的延性较好,试件在破坏前有充分的塑性发展;β=0.4时试件发生主管表面屈服破坏,β=0.8时试件发生表面屈服与侧壁屈曲破坏,β=1.0时试件发生主管弯曲屈服破坏;节点的轴向承载力和初始刚度随着β的增大有显著提高,β=1.0和β=0.8试件比β=0.4试件的承载力分别提高156%和310%,初始刚度则分别提高68.6%和94%;主管两端固定的约束条件对β≤0.8试件的承载机理及破坏形态影响较小,但引起β=1.0试件在节点区域破坏之前发生主管破坏. An experimental study was conducted to gain an understanding of the static perform- ance of a square, tubular welded T-joint under braced axial loading. The deformation charac- teristics, strain distribution, and load-displacement curves of the specimens were analyzed. The strength mechanics and failure modes were then evaluated. It appears that the welded square tubular specimens have good ductility under braced compression and exhibit full devel- opment of plastic deformation before joint failure. The joint failed from yield of the chord flange when fl=0.4, from a combination of web buckling and flange yielding when fl=0.8, and from the bending and yielding of the chord when fi= 1.0. The axial strength and initial stiffness of the joints increase significantly when β was increased from 0.4 to 0.8 or 1.0. The fixed restraint of the chord ends influenced the performance and failure of the β≤40.8 specimens only slightly while causing the chord of β= 1.0 specimens to fail before damage was observed in the joint zone.
出处 《中国矿业大学学报》 EI CAS CSCD 北大核心 2012年第6期917-922,共6页 Journal of China University of Mining & Technology
基金 国家自然科学基金项目(51274192) 江苏省研究生科研创新计划项目(CX10B-139Z) 中央高校基本科研业务费专项资金项目(2011QNB17) 江苏省土木工程研究生科技创新基金项目
关键词 方钢管 焊接节点 静力性能 试验研究 square tubular welded joint static performance experimental study
  • 相关文献

参考文献17

  • 1丁北斗,马军,王景全.基于OBJECTARX技术生成相贯节点实体模型[J].中国矿业大学学报,2008,37(4):556-559. 被引量:2
  • 2PACKER J A. Web crippling of rectangular hollow sections [J]. Journal of Structural Engineering, ASCE, 1984, 110(10) :2357-2373.
  • 3ZHAO X L, HANCOCK G J. T-joints in rectangular hollow sections subject to combined actions[J]. Journal of Structural Engineering, 1991, 117 (8) : 2258- 2277.
  • 4ZHAO X L, HANCOCK G J. Square and rectangular hollow sections subject to combined actions[J]. Journal of Structural Engineering, 1992, 118 (3): 648-668.
  • 5PARTANEN T,BJORK T. On convergence of yield line theory and experimental test capacity of RHS K- and T-jionts[C]//COUTIE M G, DAVIES G. Proceedings of the Fifth International Symposium on Tubular Structures. Nottingham: CRC Press, 1993: 353-364.
  • 6武振宇,张耀春.直接焊接T型钢管节点性能的试验研究[J].钢结构,1999,14(2):36-40. 被引量:29
  • 7KOSTESKI N, PACKER J A. Welded tee-to-hss connections[J]. Journal of Structural Engineering, 2003, 129(2): 151-159.
  • 8WARDENIER J. Hollow section joints[M]. Delft: Delft University Press, 1982.
  • 9PACKERJA HENDERSONJE 曹俊杰 译.空心管结构连接设计指南[M].北京:科学出版社,1997.69.
  • 10LIE S T, LEE C K, CHIEW S P, et al. Static Strength of cracked square hollow section t joints under axial loads. II: Numerical[J]. ASCE, Journal of Structural Engineering, 2006, 132(3): 378- 386.

二级参考文献22

共引文献146

同被引文献66

引证文献6

二级引证文献31

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部