Research On Post-Evaluation Method For Bridges Strengthening

On the basis of documentation collection from many countries, and the analysis of the predecessors' experiences of Post-Evaluation for construction projects, the dissertation discusses the conception, action, content system and theoretical methods of Post-Evaluation for bridges strengthening, presents Post-Evaluation theories and methods of bridges strengthening, according to the characteristics of the strengthening bridge and Chinese practical situatioa In details, the following aspects are investigated:1.Combining the characteristics of bridge structure, according to conventional Post-Evaluation theory, the dissertation presents Logical Frame Table for the bridge strengthening, expounds the content of procedure evaluation for the bridge strengthening projects, and establishes some quantitative evaluating indicators.2.1n the light of technical effectiveness of strengthening, the dissertation presents technical evaluation content of bridge strengthening scheme from the aspect of engineering, and establishes the evaluation content and evaluating indicators of bridge service technical condition by using bridge structure or component' specific information.3.On the ground of technical economy theories, the dissertation researches economic performance created by bridge strengthening and establishes calculating method. According to life-cycle cost analysis of whole strengthening project, on many differences between strengthening and new bridge consideration, two economic indicators (A CD and ACR) are adopted to evaluate the relative economic performance of bridges strengthening. From the financial analysis aspect the dissertation presents financial performance Post-Evaluation method of toll bridge.4.Based on the analysis of evaluation of social environmental influence on highway construction project, the dissertation establishes evaluation method of social and environmental influence on bridges strengthening.5.Applying sustainable development idea and economic optimization theories, combining reliability-based time of bridge structure, the dissertation establishes calculating method of strengthening bridge's remaining economic service lifespan. This can be applied in persistent evaluation of bridges strengthening.6.The dissertation establishes comprehensive evaluation method of Success-degree, which can be applied in comprehensive evaluation of bridges strengthening.