In a study conducted by the writers

In a study conducted by the writers at The University of Ari-
zona, the effectiveness of CFRP patches for repairing damaged
steel beams was investigated ~Tavakkolizadeh and Saadatmanesh
2001b!. A total of eight small-scale S12734.5 steel beams were
tested. The tension flanges of six beams were cut thoroughly with
two different depths of 3.2 and 6.4 mm, then beams were repaired
by CFRP patches with different lengths. A four-point bending test
was performed using the displacement control loading regime and
several unloading and reloading cycles were performed before
failure of the beam. In order to avoid lateral instability, the top
flanges of the beams were braced using turnbuckle and high
strength steel cables at third points and the beam was clamped
down at the supports. Increases in ultimate load-carrying capacity
of 145% and 63% for the beams with 80% and 40% loss of
tension flange area were reported, respectively. The stiffness of
the damaged beam after patching was recovered to 95% the origi-
nal stiffness. The different modes of failures that were observed in
the experiments were end peeling and delamination. They indi-
cated that the drawbacks of this technique included the loss of
ductility and the possibility of galvanic corrosion between the
CFRP plate and steel.

結果 (中文) 1:

由作家在大学的 Ari-进行研究
佐纳，效力的碳纤维布加固修补程序修复损坏
钢梁被调查 ~ Tavakkolizadeh 和 Saadatmanesh
2001b ！。八个小型钢 S12734.5 梁共
进行测试。六梁的张力法兰被彻底切断与
两种不同深度的 3.2 和 6.4 m m，然后梁被修理了
由不同长度的碳纤维布加固修补程序。四点弯曲测试
使用加载制度的位移控制执行和
前后均进行了几个卸载和重装周期
梁的失败。为了避免外侧不稳定，顶部
法兰的梁支撑使用花兰和高
在第三个点和光束强度钢电缆被夹紧在
在支持。极限负荷容量的增长
145%和 63%80%和 40%的损失与梁
张力法兰区的报道，分别。刚度的
梁损伤后修补恢复到 95%产地-
宇刚度。不同的模式中观察到的失败的
实验都结束了剥皮和分层。他们简报-
这种技术的缺点包括损失的重
延展性和之间的电偶腐蚀的可能性
碳纤维布加固钢板和钢。

結果 (中文) 3:

在由作家在阿里-大学
透明的研究，有效的CFRP补丁修复损坏的
钢梁进行了研究~ tavakkolizadeh和saadatmanesh
2001B！。共八小规模s12734.5钢梁
测试。六束的张力法兰与
3.2和6.4毫米的两个不同深度彻底切断，然后梁修复
通过不同长度的碳纤维片。一四点弯曲试验
采用位移控制加载制度和
几个卸载和重装周期前的梁的破坏进行
。为了避免横向不稳定性，梁的顶
法兰支撑在第三点使用高强度钢电缆螺套和
和光束被夹紧
在支持。报道了80%和40%
张力法兰区损失在145%和63%梁极限承载力
增加，分别为。刚度的
损坏的光束修补后恢复到95%的原始
NAL刚度。不同的实验中观察到的失败
最终剥落和分层，模式。他们表明
表明，这种技术的缺点包括
延性损失和电偶腐蚀的可能性的
CFRP板和钢之间。