原文传递
Threshold Stiffness of Discrete Lateral Bracing for Out-of-Plane Buckling of Steel Arches
| 题名： | Threshold Stiffness of Discrete Lateral Bracing for Out-of-Plane Buckling of Steel Arches |
| 其他题名： | ANSYS 12.1[Computer software].Canonsburg,PA,Ansys. |
| 正文语种： | 英文 |
| 作者： | Yan-Lin Guo |
| 关键词： | Steel arches;Out-of-plane;Buckling;Lateral bracing;Ritz approach;Threshold stiffness;Metal and composite structures |
| 摘要： | Steel arches are often restrained by elastic lateral braces to improve their out-of-plane stability. Because in real structures, the braces are not infinitely elastic and the strength consideration can have an effect on the stiffness requirement of the braces, it is important for the lateral braces to have sufficient stiffness and to be configured properly. This paper presents an investigation of the threshold stiffness and arrangement of discrete lateral braces required for preventing steel arches from buckling out of their plane. An energy approach is used to derive the elastic threshold stiffness for discrete lateral braces, and the effect of out-of-plane geometric imperfections on the elastic threshold stiffness of the lateral bracing is also studied. The number of lateral braces and the length of the arch segment between adjacent braces are also derived analytically by comparing the in-plane buckling loads of the entire arch and the out-of-plane buckling loads of the arch segment between adjacent braces. The threshold stiffnesses derived in this study agree well with the finite-element results. The agreement between the analytical solutions for the minimum number of lateral braces and the maximum length of the arch segment between the braces and the finite-element results is also very good. |
| 出版年： | 2015 |
| 论文唯一标识： | P-26Y2015V141N10016 |
| 英文栏目名称： | Technical Papers |
| doi： | 10.1061/(ASCE)ST.1943-541X.0001236 |
| 期刊名称： | Journal of Structural Engineering |
| 拼音刊名(出版物代码)： | P-26 |
| 卷： | 141 |
| 期： | 10 |
| 页码： | 177-183 |
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