危旧双曲拱桥技术状况及承载能力评定方法研究

Study on the Evaluation Method about Technical Condition and Bearing Capacity of the Old Double-curved Arch Bridge

自1964年双曲拱桥在我国首创并建成以来,因其结构新颖、外形美观等优点,得到广泛应用。但由于该类桥梁结构的缺陷性,在运营一段时间后易出现不同程度的损伤,故急需对其实际承载力进行评定,确保营运安全。本文系统地阐述了对某双曲拱桥的外观检查、特殊检查、及内力计算过程,在依托各种先进检测手段和有限元分析软件的基础上,研究双曲拱桥技术状况及承载能力评定方法。

Double-curved arch bridge was firstly built since 1964 ,it had been widely used because of its novel structure and beautiful shape. However, as the defect of this type of bridge structure, it is easy to appear different degree of damage after using a period of time, so it is urgent to evaluate its actual beraing capacity, ensuring the operation safely. This paper systematically describes the visual inspection, special inspection and the internal force calculation process of a double-curved arch bridge, based on the advancing detection means and the finite element analysis software, studying on the evaluation method about technical condition and bearing capacity of double-curved arch bridge.