| 英文摘要 |
According to the results of a seismic risk assessment presented in the Final Safety Analysis Report for a power plant in Taiwan, a failure of the RHR piping system occurs in both of the two accident sequences with the highest contributions to core damage. For the required seismic response-history analysis of the RHR piping systems, we set up the pure bending test to find the flanged joint parameters, such as the translation stiffness and rotation stiffness. Finally, an assessment of the performance of bolted flanged joints is conducted. In the further, we will develop detailed numerical models of flanged joints and validation these studies through bending tests, and will also propose a simplified model to improve the effectiveness of the fragility analysis of the RHR piping system. |
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