|本期目录/Table of Contents|

[1]冯 然,孟尚伟.连续开孔实腹梁整体稳定性计算方法[J].建筑科学与工程学报,2017,34(01):9-14.
 FENG Ran,MENG Shang-wei.Calculation Method for Overall Stability of Solid-web Girder with Multiple Holes[J].Journal of Architecture and Civil Engineering,2017,34(01):9-14.
点击复制

连续开孔实腹梁整体稳定性计算方法(PDF)
分享到:

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
34卷
期数:
2017年01期
页码:
9-14
栏目:
出版日期:
2017-01-19

文章信息/Info

Title:
Calculation Method for Overall Stability of Solid-web Girder with Multiple Holes
作者:
冯 然孟尚伟
合肥工业大学土木与水利工程学院
Author(s):
FENG Ran MENG Shang-wei
School of Civil Engineering, Hefei University of Technology
关键词:
开孔实腹梁整体稳定性弯扭屈曲临界弯矩有限元分析
Keywords:
solid-web girder with hole overall stability flexural-torsional buckling critical moment finite element analysis
分类号:
-
DOI:
-
文献标志码:
A
摘要:
为研究腹板开孔H型钢梁在纯弯荷载作用下的整体稳定性,采用翼缘和腹板刚度分离的方法,从理论上推导出带有连续正方形孔洞的H型钢梁的抗侧刚度、自由扭转刚度和翘曲刚度计算方法,得到其弯扭屈曲临界弯矩表达式。利用有限元软件ABAQUS对相同截面不同跨度的H型钢实腹梁在纯弯荷载作用下的弯扭屈曲临界弯矩进行分析,并将有限元模拟结果和规范计算结果进行对比。采用经验证的有限元模型对带有连续正方形孔洞的H型钢梁进行分析,并将有限元模拟结果与推导公式的计算结果进行对比。以现有规范为基础,推导出带有连续正方形孔洞的H型钢梁的弯扭屈曲临界弯矩实用计算公式。结果表明:连续开孔梁实用计算公式具有较高的精确度。
Abstract:
In order to study the overall stability of H-shaped steel girder with multiple holes under pure bending load, the rigidities of flange and web were investigated separately. The design rules for lateral stiffness, warping stiffness and torsional stiffness of H-shaped steel girder with multiple square holes were derived theoretically to obtain the critical moments of flexural-torsional buckling. Furthermore, the critical moments of flexural-torsional buckling of Hshaped steel girder with same cross-section dimensions and different spans under pure bending load were analyzed by using the finite element software ABAQUS. The results by finite element model were compared with the results by current design code. The H-shaped steel girder with multiple square holes were analyzed by verified finite element model, and the results by finite element model were compared with the results by the derived formulae. The formulae for the critical moments of flexural-torsional buckling of Hshaped steel girder with multiple square holes were proposed based on the current design code. The results show that the practical calculation formula of steel girder with multiple square holes has high accuracy.

参考文献/References:

相似文献/References:

备注/Memo

备注/Memo:
更新日期/Last Update: 2017-01-19