第55卷第4期
2023
年8月
DOI:10.15986/j.1006-7930.2023.04.015
西安建筑科技大学学报（自然科学版）
J. Xi'an Univ. of Arch. & Tech. (Natural Science Edition)
Vol. 55 No. 4
Aug.2023
预应力碳纤维板加固锈损钢梁抗弯性能试验研究
张宗星1.3，徐宇轩1，秦广冲
²
，徐善华"，彭圣元3
（1.中国矿业大学力学与土木工程学院，江苏徐州221116；2.中国船舶重工集团国际工程有限公司，北京100121；
3.
西安建筑科技大学土木工程学院，陕西西安710055)
摘要：通过碳纤维增强复合材料（
Carbonfiberreinforced composites
，CFRP）
加固锈损钢梁抗弯性能试验，研究不同预应力
度
CFRP
板对锈损钢梁破坏模式及抗弯承载力的影响，揭示
CFRP
板加固锈损钢梁受拉区对提升其正截面承载力的作用机
理，探讨
CFRP
板加固锈损钢梁界面粘结应力分布规律．结果表明：试件破坏模式均为跨中粘结界面剪切破坏后
CFRP
板
的撕裂，且
CFRP
板断裂位置大多在加载点．锈损钢梁破坏后
CFRP
板产生5～10
mm
的纵向滑移．粘结剪应力主要分布
在
CFRP
板端部区域，且剪应力最大值在加载点处．15%
fu
预应力水平
CFRP
板可以将锈损钢梁承载力提升23.26%，达
到未锈蚀状态时的承载力，同时提高
CFRP
板的利用率高达71.59%.
关键词：
CFRP
板；预应力；锈损；钢梁；抗弯性能
中图分类号：
TU352
Experimental study on bending resistance of corroded steel beams
strengthened with prestressed carbon fibre plate
ZHANG Zongzingl", XUYuzuan', QIN Guangchong’, XU Shanhua', PENG Shengyuan?
(1. School of Mechanics and Civil Engineering, China University of Mining &. Technology , Jiangsu Xuzhou, 221116, China;
2. China Shipbuilding Industry Corporation International Engineering Co. , Ltd. , Beijing 1o0121, China;
3. School of Civil Engineering, Xi'an Univ. of Arch. &Tech. , Xi'an 710055, China)
Abstract: Through the flexural performance test of rusty steel beams strengthened with carbon fiber reinforced
composite (CFRP), the effects of different prestressing degrees of CFRP plates on the failure modes and bending
capacity of rusty steel beams are studied, the mechanism of tensile zone of corroded steel beam strengthened with
CFRP plates to enhance its normal section bearing capacity is revealed, and the distribution of the interfacial stress
of corroded steel beam strengthened with CFRP plates is discussed. The test results show that the failure modes of
the specimens are the tear of the CFRP plate after the shear failure of bonding interface on the mid span, and the
fracture location of the CFRP plate is mostly at the loading point. After the destruction of the damaged steel beam,
the longitudinal slip of 5~10 mm is generated on the CFRP plate. The shear stress is mainly concentrated on the
end of CFRP, and the peak value of shear stress appears at the loading point. 15% fu prestressed CFRP plate can
increase the bearing capacity of the corroded steel beam by 23. 26%, reaching the bearing capacity in the non-
corroded state, and improve the utilization rate of CFRP plate by up to 71. 59%.
Key words: CFRP plate; prestress; rust loss; steel beam; bending strength
长期处于腐蚀环境下的钢结构工程，往往难
以通过防护与构造
预应力碳纤维板加固锈损钢梁抗弯性能试验研究（论文）.pdf
