摘要
纤维增强复合材料(FRP)桥面板是一种新材料桥面结构体系,具有耐腐蚀、重量轻、施工方便、抗疲劳性能好、耐超载性能好等优点。提出一种采用外部纤维缠绕增强构造的新型FRP桥面板,通过对3块足尺桥板构件在2种工况下的静载试验,研究采用外部纤维缠绕增强构造的FRP桥面板的受力特点和破坏模式。通过对比,分析了外部纤维缠绕对FRP桥面板刚度、极限承载力以及破坏过程的增强作用。结果表明,外部纤维缠绕能约束内部的桥板组件,改善FRP组件间的界面性能,显著提高桥板的极限承载力,使FRP得到充分利用,从而使这种新型FRP桥面板具有优越的受力性能,能够满足实际桥梁工程应用的需要。
A fiber-reinforced polymer （FRP） bridge deck has many favorite properties, such as corrosion resistance, light weight, construction convenience, good fatigue behavior, and over-load endurance. An innovative FRP bridge deck with exterior filament-wound reinforcement is proposed. Three full-scale bridge decks are tested under two load cases, to study the mechanical behaviors and the failure modes of such FRP bridge decks with exterior filament-wound reinforcements. By comparing decks with different configurations of exterior filament-wound reinforcements, the effects of the exterior filament-wound reinforcements on the stiffness, ultimate strength and failure process of the FRP decks are investigated. The results show that the exterior filament-wound reinforcements can improve the interface performance between FRP components through confinement that leads to large increase in the ultimate strength of FRP bridge decks. The innovative FRP bridge decks may achieve preferable mechanical performance and meet the demands for bridge constructions.
出处
《土木工程学报》
EI
CSCD
北大核心
2009年第9期61-67,共7页
China Civil Engineering Journal
基金
国家自然科学基金(50238030
50868004)
中俄政府间科技合作项目(CR12-44)
关键词
桥梁结构
FRP桥面板
空心板
剥离
剪切变形
bridge structure
FRP bridge deck
cellular deck
debonding
shear deformation
