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工程力学  2014 

面外支撑非均匀布置的箱型与圆管截面拱平面外弹性屈曲

, PP. 29-35

Keywords: ,平面外,离散支撑,非均匀分布,弹性屈曲,约束

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Abstract:

在面外设置离散支撑,是建筑与桥梁工程设计中提高钢拱面外稳定性采用的有效措施。该文研究了面外支撑沿拱轴线非均匀布置时,箱型与圆管截面两铰拱的平面外弹性屈曲性能。该文首先将拱段间的相互约束作用等效为拱段两端的约束弹簧,采用数值拟合法获得了被约束拱段的平面外弹性屈曲荷载;此后借鉴压弯直构件端部弯矩与转角关系,提出了支撑间拱段的相互约束作用计算方法,并由此得到了面外支撑非均匀布置时,钢拱的平面外弹性屈曲荷载迭代计算步骤。根据该文提出的方法所获得的离散支撑钢拱的平面外弹性屈曲荷载与有限元计算结果吻合较好。

References

[1]  Vlasov. Thin-walled elastic beams [M]. 2nd ed. Israel Program for Scientific Translation, Jerusalem, 1961: 425―430.
[2]  Tokarz F J, Sandhu R S. Flexural-torsional buckling of parabolic arches [J]. Journal of Structural Divisions, ASCE, 1972, 101(6): 1223―1238.
[3]  Yoo C H. Flexural-torsional stability of curved beams [J]. Journal of Engineering Mechanics, ASCE, 1982, 108(6): 1351―1369.
[4]  Yoo C H, Pfeiffer P A. Buckling of curved beams with in-plane deformation [J]. Journal of Structural Engineering, ASCE, 1984, 110(2): 291―300.
[5]  Papangelis J P, Trahair N S. Flexural-torsional buckling of arches [J]. Journal of Structural Engineering, ASCE, 1987, 113(7): 1433―1443.
[6]  窦超, 郭彦林. 圆弧拱平面外弹性弯扭屈曲临界荷载分析[J]. 工程力学, 2012, 29(3): 83―89.
[7]  Dou Chao, Guo Yanlin. Study on flexural-torsional buckling load of circular arches [J]. Engineering Mechanics, 2012, 29(3): 83―89. (in Chinese)
[8]  杨永华, 吴杰. 单轴对称截面圆弧拱平面外稳定性研究[J]. 工程力学, 2012, 29(3): 27―32.
[9]  Yang Yonghua, Wu Jie. Out of plane stability of mono-symmetric circular arches [J]. Engineering Mechanics, 2012, 29(3): 27―32. (in Chinese)
[10]  Bradford M A, Pi Y L. Elastic flexural-torsional buckling of discretely restrained arches [J]. Journal of Structural Engineering, 2002, 128(6): 719―727.
[11]  窦超. 钢拱的平面外稳定性能及设计方法研究[D]. 北京: 清华大学, 2011.
[12]  Dou Chao. Out-of-plane stability and design of steel arches [D]. Beijing: Tsinghua University, 2011. (in Chinese)
[13]  郭彦林, 窦超. 面外支撑的圆弧钢拱的弹性稳定性能及支撑刚度设计[J]. 建筑结构学报, 2012, 33(7): 37―45.
[14]  Guo Yanlin, Dou Chao. Out-of-plane elastic buckling of i-section steel arches braced laterally and design of bracing stiffness [J]. Journal of Building Structures, 2012, 33(7): 37―45. (in Chinese)
[15]  陈绍蕃. 钢结构设计原理[M]. 北京: 科学出版社, 2009: 173―177.
[16]  Chen Shaofan. Principles of steel structure design [M]. Beijing: Science Press, 2009: 173―177. (in Chinese)
[17]  陈骥. 钢结构稳定理论与设计[M]. 北京: 科学出版社, 2000: 91―94.
[18]  Chen Ji. Stability of steel structures theory and design [M]. Beijing: Science Press, 2000: 91―94. (in Chinese)
[19]  Timoshenko, Gere. Theory of elastic stability [M]. 2nd ed. New York: McGraw- Hill, 1961: 333―338.

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