UHPC桥梁研究进展与规模化应用技术路径分析  

State-of-the-art of UHPC Bridges:The Paths Towards Industrial Application

作　　者：崔冰 王景全[1,3,4] 刘加平 CUI Bing;WANG Jing-quan;LIU Jia-ping(National Key Laboratory of Safety,Durability and Healthy Operation of Long Span Bridges,Nanjing 211189,Jiangsu,China;CCCC Highway Consultants Co.Ltd.,Beijing 100010,China;Southeast University,Nanjing 211189,Jiangsu,China;Jiangsu University,Zhenjiang 212013,Jiangsu,China)

机构地区：[1]长大桥梁安全长寿与健康运维全国重点实验室,江苏南京211189 [2]中交公路规划设计院有限公司,北京100010 [3]东南大学,江苏南京211189 [4]江苏大学,江苏镇江212013

出　　处：《中国公路学报》2023年第9期1-19,共19页China Journal of Highway and Transport

基　　金：国家自然科学基金联合基金项目(U1934205);中国交通建设集团有限公司院士专项项目(YSZX-01-2022-02-B);东南大学桥梁研究中心创新项目(BERC-1-1)。

摘　　要：工程材料的革新是推动土木工程结构发展的重要驱动力,工程结构的发展又将促进工程材料不断突破。超高性能混凝土(Ultra High Performance Concrete,UHPC)是一种具备超高强度、高韧、高耐久、高抗爆等优异性能的新型超级混凝土,能较好地适应下一代桥梁工程大跨化、轻型化、高性能化的发展趋势。为促进UHPC在桥梁工程领域的研究与应用,系统梳理了近年来UHPC桥梁学术研究现状、热点前沿、存在问题、具体对策及发展前景。首先总结了UHPC材料研究进展,包括材料组成、基本力学特性与桥梁用UHPC发展历程。然后对UHPC结构设计理论研究进行了梳理总结,包括考虑纤维贡献的UHPC结构受弯受剪计算理论、UHPC结构抗冲击、抗爆与疲劳计算方法等,并重点介绍了无腹筋UHPC桥梁、钢-UHPC组合桥梁、UHPC用于桥梁抗震、UHPC桥面铺装、UHPC用于桥梁加固等结构体系创新研究进展。基于以上UHPC研究与工程应用现状,指出了UHPC在桥梁工程领域规模化应用面临的关键问题、主要挑战及实现技术路径,以期对UHPC在桥梁工程领域的学术研究和规模化应用提供新的视角和参考。The innovation of engineering materials is a major driver of the development for civil engineering structures,and the reformation of engineering structures continually promotes the revolution for engineering materials.Ultra high performance concrete(UHPC)is a new class of concrete that has excellent mechanical properties including high strength,high ductility,high durability,high impact resistance,etc.,which is suitable for the new generation bridges with long span,light weight,and high performance.To facilitate the UHPC bridge researches and implantations,this paper systematically summarizes the recent research progresses,cutting-edge highlights,current issues,corresponding solutions,and development prospect for UHPC bridges.The paper firstly summarizes the research achievements for UHPC materials,including mix design,mechanical properties,and development of UHPC for bridges;then concludes the design theories for UHPC structures,including the contributions of fibers in flexural and shear design,impact and blast resistance,fatigue design,etc.The achievements of structural system innovations,such as UHPC bridges without stirrups,steel-UHPC composite bridges,UHPC columns for seismic resistances,UHPC bridge overlay,UHPC for bridge retrofit.In lights of the current research and applications,the major challenges and technological path for large-scale application of UHPC in bridge engineering are proposed,aiming to provide new visions and references for UHPC academic researches and large-scale applications in bridge engineering.

关 键 词：桥梁工程 超高性能混凝土 综述 规模化应用 设计理论 

分 类 号：U44[建筑科学—桥梁与隧道工程]