研究目的:根据钢筋混凝土梁式桥结构体系的特点，研究实用的梁式桥健康状态的评判方法，对准确掌 握桥梁的安全状态有重要的意义。
研究结论:基于灰色理论和层次分析法，将该体系划分为上部结构、传力结构和下部结构3个子体系，根 据现场量测和专家经验给出各子体系所包含的构件的健康状态指标的量化值，并以此评判子体系的健康状 态，进而得出整个桥梁结构的健康状态评判值。
Research purposes: In terms of the systematic characteristics of the reinforced concrete girder bridge, a method of assessing the health state of Reinforced Concrete Girder Bridge is studied and it is meaningful to get hold of the safety status of the bridge.
Research Conclusions: Based upon Gray Theory and Analytic Hierarchy Process, a bridge is divided into three subsystems, namely superstructure, load-transmitted structure and substructure. According to the results measured from the bridge and the specialist's experience, quantitative values of indicating the health state for components can be conducted. The health state of each subsystem is assessed in accordance with that of the components. On the grounds of these, the health state of bridge structure can be produced.
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