[1]孟凡涛,阮兴群.有侧移失稳的Y形柱面内计算长度系数分析[J].吉林建筑大学学报,2019,(03):17-22.
 MENG Fan-tao,RUN Xing-qun.Effective length factors for Y-shaped column in-plane with lateral instability[J].Journal of Jilin Jianzhu University,2019,(03):17-22.
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有侧移失稳的Y形柱面内计算长度系数分析(/HTML)
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《吉林建筑大学学报》[ISSN:2095-8919/CN:22-1413/TU]

卷:
期数:
2019年03期
页码:
17-22
栏目:
工程科技
出版日期:
2019-06-25

文章信息/Info

Title:
Effective length factors for Y-shaped column in-plane with lateral instability
文章编号:
2095-8919(2019)03-0017-06
作者:
孟凡涛阮兴群
(山东华科规划建筑设计有限公司,山东 聊城 252000)
Author(s):
MENG Fan-taoRUN Xing-qun
(Shandong Huake planning and architectural design CO.,LTD.,Liaocheng 252000,Shandong province,China)
关键词:
弹性稳定理论计算长度系数位移法Y形柱有侧移失稳
Keywords:
elastic stability theoryeffective length factordisplacement methodY-shaped columnsway buckling
分类号:
TU 391
文献标志码:
A
摘要:
本文依据弹性稳定理论给出了柱脚刚接有侧移失稳的Y形柱弹性稳定方程,并应用MATLAB对方程进行了求解,结果表明,在夹角和上下柱段惯性矩之比相同的情况下,计算长度系数随上下柱段高度之比增大而增大; 在夹角和上下柱段高度之比相同的情况下,计算长度系数随上下柱段惯性矩之比增大而减小; 在上下柱段惯性矩之比和上下柱段高度之比相同的情况下,计算长度系数随夹角增大而增大.数据分析给出了便于工程实用的下段主干计算长度系数的拟合计算式,当夹角小于90°时,该计算式误差在5%以内; 而夹角大于90°且不大于150°时,最大误差为16.25%.最后,通过工程实例验证了本文拟合计算式的精度.
Abstract:
Based on the theory of elastic stability,the elastic stability equation of Y-shaped column rigidly connected with lateral displacement is given.The stability equation is solved by using MATLAB.The results show the effective length coefficient increases with the increase of the height ratio of the upper and lower columns when the angle and the moment of inertia of the upper and lower columns are the same,and the effective length coefficient increases with the ratio of the moment of inertia of the upper and lower columns when the angle and the height ratio of the upper and lower columns are the same.When the ratio of the inertia moment of the upper and lower columns and the ratio of the height of the upper and lower columns are the same,the effective length coefficient increases with the increase of the angle.Through data analysis,the fitting formula of the effective length coefficient of the lower columns is given.When the angle is less than 90°,the error of the fitting formula is less than 5%,and the angle is more than 90° and less than 150°,the maximum error is 16.25%.Finally,the accuracy of the fitting formula is verified by engineering examples.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-09-23
作者简介:孟凡涛(1982~),男,山东省聊城人,工程师,硕士.E-mail:super20030@163.com.
更新日期/Last Update: 2019-06-25