城市中承式钢管混凝土拱桥技术状况评估方法研究

Study on Technical Condition Evaluation Method of Urban Half-through Concrete-filled Steel-tube Arch Bridge

摘要:

城市中承式钢管混凝土拱桥属于I类养护桥梁，养护规范中根据结构构件损伤评判此类桥梁的结构安全，桥梁完好状态分为合格级和不合格级。但区分技术状况结果缺少具体的评估标准，也无部位及构件的评估等级，不便于管养单位根据评估结果对桥梁结构开展针对性养护。提出了一种分层综合评估方法，可便捷、定量地开展技术状况评估，解决了此类桥梁目前在技术状况评估存在的问题，可指导管养单位制定针对性养护对策，维持桥梁运营安全。

Abstract:

The urban half-through concrete-filled steel-tube arch bridges belong to Class I maintained bridges. In the maintenance specifications, such bridges are classified into the qualified grade and unqualified grade based on the impact of structural component damage on the safety of bridge structure and the serviceable condition of bridge. But there is no specific evaluation standard for classifying the technical conditions, and no evaluation grade for the positions and components, which is not convenient for the management units to carry out targeted maintenance of the bridge structures according to the evaluation results. A hierarchical comprehensive assessment method is proposed to easily and quantitatively carry out the technical condition assessment, solve the existing problems in the current technical condition assessment of such bridges, and guide the formulation of targeted maintenance countermeasures to maintain the safety of bridges.