Ultimate Limit Design of Strengthened Steel Columns by Mortar-Filled FRP Tubes
Ultimate Limit Design of Strengthened Steel Columns by Mortar-Filled FRP Tubes
复制标题
砂浆填充FRP管加固钢柱极限设计
DOI：
10.1155/2021/6676267
复制
发表时间：
2021-03
影响因子：
--
通讯作者：
Song Li
中科院分区：
文献类型：
--
作者：
Hou Jian;Song Li
本研究探讨了砂浆填充纤维增强聚合物（FRP）管加固钢柱的各种破坏模式，分析制定这些钢柱的极限承载力。提出了一种简单有效的方法，即在钢构件外套入砂浆填充玻璃钢管，以提高受压钢构件的抗屈曲能力。此外，为了便于柱与其他结构构件的连接，套管砂浆填充玻璃钢管的长度小于原钢柱的长度。理论分析也进行了这种组合柱的临界截面在其极限状态，以确定其潜在的失效模式，如FRP管在端部或内部的包裹区域，局部屈曲在钢端部的过渡区，和整体屈曲的组合柱。每种失效模式的相应极限承载力，然后解析制定的特征的临界失效模式和极限承载力的列。将现有的理论计算结果与文献结果进行了比较，验证了所提出的FRP砂浆-钢组合柱极限承载力设计方法的适用性。
The present study investigated the various failure modes of strengthened steel columns by mortar-filled fiber-reinforced polymer (FRP) tubes to analytically formulate the ultimate capacities of these steel columns. A simple and effective method, wherein a mortar-filled FRP tube was sleeved outside the steel member, was also formulated to enhance the buckling resistance capacity of compressed steel members. In addition, to facilitate the connection of the column to other structural members, the length of the sleeved mortar-filled FRP tubes is less than that of the original steel columns. Theoretical analyses were also performed on the critical sections of such composite columns at their ultimate states to identify their potential failure modes, such as FRP-tube splitting at the ends or on the insides of wrapped areas, local buckling at the steel ends of transition zones, and global buckling of the composite columns. The corresponding ultimate capacity of each failure mode was then analytically formulated to characterize the critical failure mode and ultimate load capacity of the columns. The current theoretical results were compared with those from literature to validate the applicability of the developed ultimate limit design approaches for FRP-mortar-steel composite columns.
登录
查看更多内容
影响因子：
7.4
作者：
V. Mara;R. Haghani;P. Harryson
通讯作者：
V. Mara;R. Haghani;P. Harryson
影响因子：
1.4
作者：
Shaat, Amr;Fam, Amir
通讯作者：
Fam, Amir
影响因子：
6.3
作者：
Chao Wu;Yu Bai
通讯作者：
Chao Wu;Yu Bai
DOI：
--
发表时间：
--
期刊：
--
影响因子：
--
作者：
Ye Zhu;Yongjian Fu;Huirong Fu
通讯作者：
Ye Zhu;Yongjian Fu;Huirong Fu
影响因子：
7.4
作者：
J. Teng;Y. M. Hu
通讯作者：
J. Teng;Y. M. Hu