Host: The Japan Society of Mechanical Engineers
Name : Dynamics and Design Conference 2023
Date : August 28, 2023 - August 31, 2023
As a countermeasure to mitigate the catastrophic damage by an excessive seismic load beyond the design level, a concept of passive safety structure has been proposed recently. To apply this concept to the piping system, one of ideas is to cause the failure at pipe supports prior to the failure of pipe body itself, because the failure at support is minor failure compared to that at pipe body. However, there are few experimental data on seismic response behavior of piping system in which multiple supports failed during the seismic motion. In order to obtain the basic data for the seismic response behavior of such piping system, a shaking table test on a small-bore piping system model were conducted. As a result, it was confirmed that the support structures were continuously damaged during seismic wave input. The fundamental frequency of piping system was decreased due to the support failure, and it resulted in the decrease of the response acceleration of piping system.
