桥梁评估与加固理论2019年度研究进展

State-of-the-art review of bridge assessment and reinforcement theory in 2019

综合运用现代测试手段、试验技术、评估理论、结构理论、数值仿真、数学统计预测等理论方法和技术手段,对既有桥梁在剩余服役期内的安全性和适应性给出评判,提出维护策略及加固方法,是桥梁工程的重要研究领域。基于该领域最新研究进展,对基于时变理论的既有桥梁可靠性评估方法、结合工程应用的可靠度计算方法、维修加固的策略、钢筋混凝土墩柱的抗震性能及其抗震加固、桥梁加固的新材料、新方法和新装备等研究进行了介绍和总结,并从对既有结构性能衰变的认识、发展新的理论与方法、根据实际需求拓展新的研究领域等方面对研究提出了展望。

It is an important research field of bridge engineering to evaluate the safty and adaptability of existing bridges during the remaining service period and put forward maintenane strategies and reinforcement methods,that to put forward maintenance strategies and reinforcement methods,by using modern testing methods,testing technology,evaluation theory,structural theory,numerical simulation,mathematical statistical prediction and other theoretical methods and technical means comprehensively.Based on the literature of 2019,this paper introduces and summarizes the reliability evaluation method of existing bridges based on time-varying theory,reliability calculation method combined with engineering application,maintenance and reinforcement strategy,seismic performance and seismic reinforcement of reinforced concrete pier columns,new materials,new methods and new equipment of bridge reinforcement,etc.,in addition,the research prospect is put forward from the aspects of the understanding of the existing structure performance decay,the development of new theories and methods,and the expansion of new research fields according to the actual needs.