浅谈桥梁健康监测技术在双曲拱桥中的应用

摘要:

双曲拱桥是中国独创的,具有鲜明的时代特征,兴起于20世纪60年代的一类拱式桥梁结构。受当时技术及经济条件影响,既有双曲拱桥普遍存在结构整体性能、横向连接性能薄弱等问题。近年来随着公路通行荷载的增加,很多该类桥梁已产生一些危及桥梁安全的病害,对双曲拱桥实施结构健康监测刻不容缓。以苏州河上宝成桥为工程实例,详细介绍该桥结构健康监测项目实施及运营情况,并提出将宝成桥结构健康监测的成果运用到苏州河上其他既有中小桥结构日常管养中的建议。

Abstract:

Abstract： Double curved arch bridge is a kind of arch bridge structure with distinctive characteristics of the times, which emerged in the 1960s. Affected by limite of technical and economical conditions at that time, the existing double curved arch bridges generally have some problems, such as weak performance and transverse connection performance. In recent years, with the increase of highway traffic load, many of such bridges have produced some diseases endangering bridge safety. It is urgent to implement structural health monitoring of double curved arch bridges. Taking Baocheng bridge on Suzhou River as an example, this paper introduces the implementation and operation of the bridge structural health monitoring project in detail, and puts forward some suggestions on applying the positive results of Baocheng bridge structural health monitoring to the daily management and maintenance of other existing medium and small bridges on Suzhou River.