Healthy Assessment Of The RC Beam Bridge Based On Structural Reliability Theory

First of all, the reliability theory and several computation analysis methods of reliability are introduced, and the computation analysis methods of reliability of the structure system are researched emphatically, including the significant failure mode of structural system and the analysis methods of the structural system reliability, also carried on the initially study on the computation analysis methods of dynamic reliability of the bridge structure components, and educed the probability models and statistical parameters of the bridge structure components' resisting forces and load effect which changes over the time.Reinforced concrete beam bridge which is a specific system is analysed. According to this analysis, put forward the assessment model of the reliability of the reinforced concrete bridge. Refer to the related literatures, produced the probability model of resisting forces and loads (load effect). According to the assessment model, combining level analysis, put forward the reliability assessment process and analysis methods of the reinforced concrete beam bridge structural system, also researched on the main failure mode of the reinforced concrete beam bridge, and the relativity between those failure modes, separately carried on the analysis of the reliability of the main load components, and produced its corresponding reliability calculation analysis process and method. The factors which affect the reliability of structural components are analysed, mainly include the variability of resisting forces, the variability of dead load effect, the variability of live load effect, steel rust, concrete strength etc, and gain some relative conclusions and recommendations by the qualitative analysis of those factors' affection . Through two examples which evaluate the safety of a simply supported beam bridge and a continuous beam bridge, demonstrated the analysis process of healthy assessment of the RC beam bridge which based on structural reliability theory.In addition, also carried on the pilot study of the bridge management system, and the bridge assessment methods which base on the reliability theory, apply to the bridge management system, have been studied, and also carried on the outline design.