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双锥型圆钢管的强度设计计算方法 被引量:1

Design method of circular steel tube with tapered ends
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摘要 双锥型圆钢管是由两端锥形变截面体和中间等截面体组合而成的受力构件,在弯矩、轴力和扭距的组合荷载作用下的破坏性状有三种,分别为破坏截面处于锥体和中间等截面体的交界处、锥体段内和杆端处。本文分析了在各种几何和荷载参数等因素的变化下构件的破坏性状并推导了破坏截面位置计算公式,还利用Mises屈服条件给出了压弯扭作用下截面强度设计公式,发现通过调整各种参数(如锥面坡度i等)可以控制破坏截面的位置,改变构件的破坏性状,提高承载力。同时双锥型变截面圆钢管构件的截面强度计算设计可以分两步进行,首先确定最不利破坏截面的位置,然后应用截面强度设计公式进行截面强度验算。最后通过有限元分析和试验对理论推导进行了验证,弥补了现行规范的不足。 Circular steel tube with tapered ends consists of three parts: the two end truncated cones and a middle straight tube. Under the combined action of bending, axial force and torsion, it has three kinds of failure pattems: the destroyed cross-section lies at the ends, the destroyed cross-section lies in the interface of truncated cone and straight tube, or the destroyed cross-section lies in the truncated cones. This paper presents the formulas for computing the location of destroyed cross-section and the load-carrying capacity of the section by use of Mises stress criterion. It is found that the destroyed cross-section is under the influence of the factors such as the cone taper i, and the location of the failure section can be adjusted by these factors so as to control the location of destroyed cross-section to variate the destruction behavior and thus to enhance the load-carrying capacity of the member. The design process includes two steps : first to determine the failure location and then to check the load-carrying capacity of the cross-section. The results obtained from this method are verified by FEA and experiment.
出处 《建筑结构学报》 EI CAS CSCD 北大核心 2005年第6期86-91,107,共7页 Journal of Building Structures
基金 国家科技攻关计划课题(2004BA904B02) 北京市科技计划项目(Z000402804221)
关键词 双锥型圆钢管 最不利截面位置 强度设计 circular steel tube with tapered ends location of the destroyed cross-section load-carrying capacity design
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参考文献5

  • 1GB50017-2003.钢结构设计规范[S].[S].,..
  • 2American Institute of Steel Construction. Load and Resistance Factor Design Specification for Structural Steel Buildings [ S ].1999.
  • 3浙江大学空间结构研究中心.“水立方”结构变截面圆钢管试验研究报告[R].浙江大学,2004..
  • 4浙江大学空间结构研究中心.“水立方”结构变截面圆钢管数值计算研究报告[R].浙江大学,2004..
  • 5罗尧治,季伟捷,沈雁彬,傅学怡,顾磊.双锥型压弯(扭)圆钢管的试验研究[J].建筑结构学报,2005,26(6):79-85. 被引量:2

二级参考文献14

  • 1罗尧治,赵志雄,武芳.双锥型圆钢管的单元刚度矩阵及修正系数[J].建筑结构学报,2005,26(6):92-99. 被引量:1
  • 2浙江大学空间结构研究中心.“水立方”结构变截面圆钢管试验研究报告[R].浙江大学,2004..
  • 3浙江大学空间结构研究中心.“水立方”结构变截面圆钢管数值计算研究报告[R].浙江大学,2004..
  • 4BLEICH F. Buckling strength of metal structures [ M]. New York: McGraw-Hill Book Co. Inc., 1952:399 - 413.
  • 5CULVER C G, PREG S M. Elastic stability of tapered beam-columns[Jl. Journal of the Structural Division, ASCE, 1968,94(2) : 455 - 470.
  • 6BUTLER D J, ANDERSON G B. The elastic buckling of tapered beam-columns[ Jl. Welding Journal, 1963,42( 1 ) : 29 - 36.
  • 7PRAWEL S P, MORREL M L,LEE G C. Bending and buckling strength of tapered structural members [ J ]. Welding Journal,1974,53(2) :75 - 84.
  • 8SALTER J B,ANDERSON D,MAY L M. Tests on tapered steel colunms[Jl. Structural Engineering, 1980,58(6) : 189 - 193.
  • 9ERMOPOULUS J C. Buckling of tapered bars under stepped axial loads[J]. Journal of the Structural Engineering, ASCE, 1986, 11(6) : 1346 - 1354.
  • 10叶开沅,纪振义.非均匀变截面梁的稳定和自由振动的阶梯折算法[J].兰州大学学报(自然科学版),1990,26(2):40-46. 被引量:6

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