灾害作用下混凝土桥梁结构损伤研究进展

Research progress of bridge structure damage under disaster

为了深入认识灾害作用下桥梁结构损伤对陆路交通的影响机制,提升桥梁结构抗灾韧性,促进桥梁工程灾后柔性运行与快速恢复,论文系统梳理了国内外学者通过理论研究、模型试验、数值模拟、现场调研等手段对桥梁结构在运营过程中可能遭遇的结构破坏性自然灾害(地震、水灾、泥石流、滑坡、风灾)和结构致损性突发灾害(爆炸、撞击、火灾)等作用下桥梁结构的损伤特点与危害、损伤机理与破坏模式等研究成果,分析了目前研究存在的不足,并提出亟待深入研究的系列问题。

In order to deeply understand the impact mechanism of bridge structure damage on land traffic under disaster,improve the disaster resistance toughness of bridge structure,and promote the flexible operation and rapid recovery of bridge engineering after disaster,this paper systematically combs the research results of domestic and foreign scholars on the damage characteristics and hazards,damage mechanism and failure mode of bridge structure under the action of structural destructive natural disasters(earthquake,flood,debris flow,landslide and wind)and structural destructive sudden disasters(explosion,impact and fire)that may be encountered by bridge structure in the process of operation by means of theoretical research,model test,numerical simulation and field investigation. This paper analyzes the shortcomings of the current research,and puts forward a series of problems that need to be further studied.