轨道交通桥梁技术状况评定体系及方法研究

建立轨道交通桥梁技术状况评定体系及检测指标，为轨道交通桥梁检测评定工作提供依据，在公路、市政、铁路桥梁检测规范的基础上，研究轨道交通桥梁的结构特点、荷载特点，提出了针对轨道交通桥梁的技术状况评估方法，明确了基于公路桥梁的轨道交通桥梁检测指标，形成一套完整可行的检测评定技术。选取典型的梁式轨道交通桥梁项目，采用研究建立的评定方法对工程结构进行技术状况评价。结果显示该方法和原有方法评定结果基本一致，前者更能反映轨道交通桥梁管理中重点关注的问题，验证了该方法的适用性和针对性。

Research on Technical Condition Assessment System and Method of Rail Transit Bridges

The technical condition assessment system and testing indexes for rail transit bridges are built to provide a basis for the testing and assessment of rail transit bridges. On the basis of the testing specifications of highway, municipal and railroad bridges, the structural characteristics and loading characteristics of rail transit bridges are studied. A technical condition assessment method for rail transit bridges is proposed. The testing indexes of rail transit bridges based on highway bridges are clarified. A complete and feasible set of testing and assessment techniques is formed. By selecting a typical girder rail transit bridge project, the evaluation method established by the study is used to evaluate the technical condition of the project structure. The results show that the assessment results of the method and the original method are basically the same, and the former better reflects the key concerns in the management of rail transit bridges, which verifies the applicability and relevance of the method.