中小跨径桥梁早期典型病害分析及养护策略研究

Study on Typical Diseases and Maintenance Strategies of Medium and Small Span Bridges in Early Operation Period

以上海市中、小跨径桥梁为研究对象,进行运营早期阶段的病害养护研究。通过统计0～30年内典型桥梁样本,分析中、小跨径桥梁的主要结构形式;然后考虑病害的发生比例及其对桥梁结构性能、行车安全性及舒适性的影响,确定了运营早期阶段的典型病害;在此基础上进一步分析病害发生比例随运营年限的变化规律,制定了针对早期典型病害的养护策略,用于指导桥梁的管理与维护。

Taking the medium and small span bridges as the research object, the bridge diseases at the early service time was studied. Firstly, the main structural styles of medium and small span bridges were analyzed by doing statistic of bridge samples within 0 ～ 30 a. Secondly, the typical diseases were identified considering the occurrence ratios and its effects on structural performance and traveling comfort and safety. On this basis the variations of occurrence ratios for typical diseases with operation period were analyzed, and the maintenance strategies were also developed which could be used to guide the management and maintenance of bridges.