摘要
为推动泥石流冲击桥梁结构方向的深入研究,综述了近年来该领域的重要研究进展,围绕研究方法、泥石流冲击力、桥梁结构响应和结构防灾减灾4个方面进行了系统性梳理。分析表明:1)室内试验和数值模拟是当前研究泥石流冲击桥梁的主要方法,两者互为补充,为深入研究泥石流与桥梁的相互作用提供了有力支撑;2)桥梁结构动力响应与泥石流流变参数和泥石流冲击力有关,三者呈一定映射关系;3)泥石流浆体与大石块对桥梁的耦合作用机理及综合影响尚未厘清,是未来的重点研究方向之一;4)主动和被动防护措施能有效削弱泥石流冲击力,降低桥梁风险。相关结论可为泥石流冲击桥梁结构明确研究方向提供参考。
In order to promote the in-depth study of the impact of debris flow on bridge structure,important research progress in this field in recent years is reviewed,and the four aspects of research methods,debris flow impact force,bridge structure response and structural disaster prevention and mitigation are systematically reviewed.The analysis shows that:1)Indoor experiments and numerical simulations are currently the main methods for studying the impact of debris flows on bridges.The two complement each other and provide strong support for further research on the interaction between debris flows and bridges;2)The dynamic response of bridge structures is related to the rheological parameters of debris flow and the impact force of debris flow,and the three have a certain mapping relationship;3)The coupling mechanism and comprehensive impact of debris flow slurry and large rocks on bridges have not been clarified,which is one of the key research directions in the future;4)Active and passive protective measures can effectively weaken the impact force of debris flows and reduce bridge risks.The relevant conclusions can provide reference for the clear research on the impact of debris flow on bridge structures.
作者
曾浩楠
何沛建
冯侠
贺华芹
廖茂
ZENG Haonan;HE Peijian;FENG Xia;HE Huaqin;LIAO Mao(State Key Laboratory of Bridge Engineering Safety and Resilience,Chongqing 400067;China Merchants Chongqing Communications Technology Research&Design Institute Co.,Ltd.,Chongqing,400067)
出处
《公路交通技术》
2024年第6期30-41,共12页
Technology of Highway and Transport
基金
国家重点研发计划项目(2023YFB2604400)。
关键词
泥石流
桥梁
冲击力
室内试验
数值模拟
综述
debris flow
bridge
impact force
laboratory test
numerical simulation
review
