张爱林, 张庆芳, 柴抒韬, 张振宇. 工形截面轴心受压构件板件屈曲系数研究[J]. 工程力学, 2017, 34(5): 60-67. DOI: 10.6052/j.issn.1000-4750.2015.10.0871
引用本文: 张爱林, 张庆芳, 柴抒韬, 张振宇. 工形截面轴心受压构件板件屈曲系数研究[J]. 工程力学, 2017, 34(5): 60-67. DOI: 10.6052/j.issn.1000-4750.2015.10.0871
ZHANG Ai-lin, ZHANG Qing-fang, CHAI Shu-tao, ZHANG Zhen-yu. STUDY ON PLATE BUCKLING COEFFICIENTS OF AXIAL COMPRESSION MEMBERS WITH I-SHAPED SECTIONS[J]. Engineering Mechanics, 2017, 34(5): 60-67. DOI: 10.6052/j.issn.1000-4750.2015.10.0871
Citation: ZHANG Ai-lin, ZHANG Qing-fang, CHAI Shu-tao, ZHANG Zhen-yu. STUDY ON PLATE BUCKLING COEFFICIENTS OF AXIAL COMPRESSION MEMBERS WITH I-SHAPED SECTIONS[J]. Engineering Mechanics, 2017, 34(5): 60-67. DOI: 10.6052/j.issn.1000-4750.2015.10.0871

工形截面轴心受压构件板件屈曲系数研究

STUDY ON PLATE BUCKLING COEFFICIENTS OF AXIAL COMPRESSION MEMBERS WITH I-SHAPED SECTIONS

  • 摘要: 板件屈曲系数的取值由板件之间的约束决定,且直接影响到截面(板件)的弹性临界应力。基于经典弹性板屈曲理论和CUFSM软件两种方法研究均匀受压板件的屈曲系数与板件尺寸的关系,并互相印证,发现两者所得结果基本一致,但在某些特殊情况下差别较大,表明CUFSM软件具有局限性。根据175个热轧工形截面的计算数据,拟合得到了屈曲系数的简化公式。与其他公式相比,该文建议公式计算简便且具有更好的准确性,可用于直接强度法或确定板件的宽厚比限值。

     

    Abstract: The plate buckling coefficient is controlled by the web-flange interaction amongst the elements comprising the cross section, and influences the elastic critical stress of cross-section (plate) directly. Based on classical elastic plate buckling theory and CUFSM software, the relationship between buckling coefficients and section dimensions is investigated. The data indicates that the results from these two methods are mostly consistent, but quite different in some special cases. These facts prove that the CUFSM software has limitation in calculating elastic local buckling loads. The simplified formulas of buckling coefficients are obtained according to the results of 175 hot rolled sections. Compared with other current solutions, the formulas proposed in this paper can achieve more accurate predictions and can be used in Direct Strength Method or width-thickness limits.

     

/

返回文章
返回