The purpose of this study is to reduce seismic responses of an actual nuclear piping system using a tuned mass damper (TMD) device. A numerical piping model was developed and validated based on shaking table test results with actual nuclear piping. A TMD for nuclear piping was newly devised in this work. A TMD shape design suitable for nuclear piping systems was conducted, and its operating performance was verified after manufacturing. The response reduction performance of the developed TMD under earthquake loading on actual piping was investigated. Results confirmed that, on average, seismic response reduction rates of 34% in the maximum acceleration response, 41% in the root mean square acceleration response, and 57% in the spectral acceleration response were shown through the TMD application. This developed TMD operated successfully within the seismic response reduction rate of existing TMD optimum design values. Therefore, the developed TMD and dynamic interpretation help improve the nuclear piping's seismic performance.

本研究的目的是使用调谐质量阻尼器 (TMD) 装置减少实际核管道系统的地震响应。基于实际核管道的振动台试验结果，开发并验证了数值管道模型。在这项工作中新设计了一种用于核管道的 TMD。进行了适用于核管道系统的TMD形状设计，并在制造后验证了其运行性能。研究了开发的 TMD 在地震荷载作用下对实际管道的响应降低性能。结果证实，平均而言，通过 TMD 应用程序显示，最大加速度响应的地震响应减少率为 34%，均方根加速度响应为 41%，谱加速度响应为 57%。这种开发的 TMD 在现有 TMD 最佳设计值的地震响应降低率范围内成功运行。因此，开发的TMD和动力解释有助于提高核管道的抗震性能。