Axial loading tests on short and long hollow structural steel columns retrofitted using carbon fibre reinforced polymers
Axial loading tests on short and long hollow structural steel columns retrofitted using carbon fibre reinforced polymers
复制标题
DOI：
10.1139/l05-042
复制
发表时间：
2006-04-01
影响因子：
1.4
通讯作者：
Fam, Amir
中科院分区：
文献类型：
--
作者：
Shaat, Amr;Fam, Amir
本文介绍了用碳纤维布加固的方形空心短柱和方形空心长柱的轴压性能。测试了27个短柱和5个长柱HSS试样。CFRP板方向的影响。在纵向和横向方向上的短柱进行了研究。对于长柱，CFRP片材仅在纵向方向上取向。最大强度增益为18%，实现了短柱与两个横向CFRP层。对于长柱，最大强度增益为23%，实现了三个纵向CFRP层施加在四个侧面。在所有CFRP加固的长柱，侧向挠度减少。长柱的强度增益高度依赖于柱的缺陷。因此，没有建立相关性之间的强度增益和数量的CFRP层。通过转换截面分析，对CAN/CSA 16-01公式进行修正，使其能够用于预测长柱的轴压承载力。
This paper describes the, behaviour of axially loaded short and long square hollow structural section (HSS) columns, strengthened with carbon fibre reinforced polymer (CFRP) sheets. Twenty-seven short-column and five long-column HSS specimens were tested. The effect of CFRP sheet orientation. in the longitudinal and transverse directions was studied for short columns. For long columns, CFRP sheets were oriented in the longitudinal direction only. A maximum strength gain of 18% was achieved for short columns with two transverse CFRP layers. For long columns, the maximum strength gain of 23% was achieved with three longitudinal CFRP layers applied on four sides. In all CFRP-strengthened long columns, lateral deflections were reduced. Strength gain in long columns was highly dependent on the column's imperfection. As such, no correlation was established between strength gain and number of CFRP layers. CAN/CSA 16-01 equation was modified to account for CFRP through transformed section analysis so that they could be used to predict the axial-load capacity of long columns.