摘要
高速公路桥梁病害多种多样,随着运营年限的增长,超重车辆屡禁不止,线路上桥梁耐久性进一步恶化,特别是中小型桥梁非预应力结构板梁存在较大的安全隐患。现主要根据上海地区多条高速公路近三年来百余座桥梁的系统检测成果,归纳总结了高速公路各结构类型桥梁上部结构、下部结构、桥面系等部位存在的常见病害特征,病害类型包括混凝土裂缝、混凝土破损露筋、支座脱空、铺装车辙等方面,并依据结构受力特点对各病害的成因进行了针对性分析,形成系统性的研究成果,给高速公路桥梁运营维护、检测等相关业内工作者提供一定的参考依据。
There are many kinds of highway bridge distresses.Overweighted vehicle is a major threat to the durability of the bridge,especially for non-prestressed structural slab girder of the small and medium-sized bridges.Based on the systematic inspection results of more than 100 bridges in recent three years of several expressways in Shanghai,this paper summarized the common distresses characteristics of superstructure,substructure, bridge deck system and other parts of various structural types of expressways.The distress types included concrete crack,concrete damage exposed reinforcement,bearing void,pavement rut and other aspects.According to the structural stress characteristics,this paper analyzed the causes of each distresses,and formed systematic research results to provide some reference for the expressway bridge operation and maintenance,detection and other related industry workers.
出处
《上海公路》
2020年第4期60-64,70,I0006,共7页
Shanghai Highways
基金
上海市建筑科学研究院(集团)有限公司科技开发项目(HT.02.18.121S0401)。
关键词
高速公路桥梁
病害总结
成因分析
expressway bridge
distress summary
cause analysis
