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工程力学  2013 

钢构件弯扭屈曲总势能方程的合理性分析

DOI: 10.6052/j.issn.1000-4750.2011.09.0634, PP. 82-88

Keywords: 钢构件,总势能方程,合理性,应变表达式,位移模式

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Abstract:

为研究钢构件弯扭屈曲总势能方程的合理性,该文通过分析推导总势能方程的两个方法——应力法和应变法的基本过程,揭示了应变表达式和位移模式是影响总势能方程推导结果的两个关键因素,建立了这两个关键因素合理性的判定准则,并验证了准则的正确性。依据该文建立的准则,对两种典型位移模式和三种典型总势能方程进行了判定。结果表明:符拉索夫位移模式较Trahair位移模式更为合理,吕烈武等学者的总势能方程较Bleich的总势能方程和Trahair的总势能方程更为合理。最后,建议了推导钢梁临界弯矩Mcr设计公式应采用的总势能方程。

References

[1]  邓扬, 李爱群, 丁幼亮, 等. 润扬大桥悬索桥桥址风环境的长期监测与分析[J]. 空气动力学学报, 2009, 27(6): 632―638.
[2]  Tong Genshu, Zhang Lei. A controversy and its settlement in the calculation of buckling moment of thin-walled beams with monosymmetrical I-section under distributed loads [J]. Journal of Building Structures, 2002, 23(3): 44―51. (in Chinese)
[3]  Deng Yang, Li Aiqun, Ding Youliang, et al. Long-term monitoring and analysis of the wind environment at the site of Runyang Suspension Bridge [J]. ACTA Aerodynamica Sinica, 2009, 27(6): 632―638. (in Chinese)
[4]  陈政清. 桥梁风工程[M]. 北京: 人民交通出版社, 2005: 50―53.
[5]  张磊, 童根树. 工字形截面悬臂钢梁的稳定性研究[J]. 工程力学, 2003, 20(4): 176―182.
[6]  Chen Zhengqing. Bridge wind engineering [M]. Beijing: China Communication Press, 2005: 50―53. (in Chinese)
[7]  曹映泓, 项海帆, 周颖. 大跨度桥梁随机风场的模拟[J]. 土木工程学报, 1998, 31(3): 72―79.
[8]  Cao Yinghong, Xiang Haifan, Zhou Ying. Simulation of stochastic wind field on Long-Span Bridge [J]. China Civil Engineering Journal, 1998, 31(3): 72―79. (in Chinese)
[9]  李永乐, 周述华, 强士中. 大跨度斜拉桥三维脉动风场模拟[J]. 土木工程学报, 2003, 36(10): 60―65.
[10]  Zhang Lei, Tong Genshu. On stability of I-section steel cantilevers [J]. Engnireeing Mechanics, 2003, 20(4): 176―182. (in Chinese)
[11]  张学军, 许金余, 赵靖. 关于薄壁构件总势能方程的理论探讨[J]. 工程力学, 2009, 26(6): 58―64.
[12]  Zhang Xuejun, Xu Jinyu, Zhao Jing. A discussion on the total potential energy equation of thin-walled members [J]. Engnireeing Mechanics, 2009, 26(6): 58―64. (in Chinese)
[13]  Li Yongle, Zhou Shuhua, Qiang Shizhong. Simulation of three-dimesional fluctuating wind field for large span cable-stayed bridge [J]. China Civil Engineering Journal, 2003, 36(10): 60―65. (in Chinese)
[14]  GB 50017-2003, 钢结构设计规范[S]. 北京: 中国计划出版社, 2003.
[15]  丁泉顺, 陈艾荣, 项海帆. 大跨度桥梁结构耦合抖振响应频域分析[J]. 土木工程学报, 2003, 36(4): 86―93.
[16]  GB 50017-2003, Code for design of steel structures [S]. Beijing: China Planning Press, 2003. (in Chinese)
[17]  GB 50018-2002, 冷弯薄壁钢结构技术规范[S]. 北京: 中国计划出版社, 2002.
[18]  GB 50018-2002, Technical code of cold-formed thin-wall steel structures [S]. Beijing: China Planning Press, 2002. (in Chinese)
[19]  Timoshenko S P, Goodier J N. Theory of elasticity [M]. 3nd ed. New York: McGraw-Hill, 1972: 235―237.
[20]  Власов В З. Тонкостенные упругие стержни [M]. Москва: Государственное Издательство Строительной Литературы, 1940: 23―27.
[21]  陈骥. 钢结构稳定理论与设计[M]. 第2版. 北京: 科学出版社, 2001: 528―533.
[22]  Chen Ji. Stability of steel structures theory and design [M]. 2nd ed. Beijing: Science Press, 2001: 528―533. (in Chinese)
[23]  周绪红, 刘占科. 薄壁构件弯扭屈曲总势能方程的若干问题分析[C]// 李国强, 陆烨, 李元齐. 第三届结构工程新进展国际论坛论文集. 北京: 中国建筑工业出版社, 2009: 9―15.
[24]  Ding Quanshun, Chen Airong, Xiang Haifan. Response of coupled buffeting to long-span Bridges in frequency-domain [J]. China Civil Engineering Journal, 2003, 36(4): 86―93. (in Chinese)
[25]  项海帆. 现代桥梁抗风理论与实践[M]. 北京: 人民交通出版社, 2005: 50―120.
[26]  Xiang Haifan. Modern theory and practice on bridge wind resistance [M]. Beijing: China Communications Press, 2005: 50―120. (in Chinese)
[27]  Simiu E, Scanlan R H. Wind effects on structures [M]. New York: John Wiley & Sons, 1996: 80―96.
[28]  Zhou Xuhong, Liu Zhanke. Analysis on some problems in total potential energy equation of flexural-torsional buckling of thin-walled members [C]// Li Guoqiang, Lu Ye, Li Yuanqi. Proceedings of the Third International Forum on Advances in Structural Engineering. Beijing: China Architecture & Building Press, 2009: 9―15. (in Chinese)

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