弾塑性ダンパ支持配管系の耐震設計手法の開発 : 第1報,弾塑性ダンパの単体設計手法の開発

概要

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Components and piping systems in current nuclear power plants and chemical plants are designed to employ many supports to maintain safety and reliability against earthquakes. However, these supports are rigid and have a slight energy-dissipating effect. It is well known that applying high damping supports to the piping system is very effective for reducing the seismic response. In this study, we investigate the design method of the elastoplastic damper [energy absorber (EAB)] and the seismic design method for the piping system supported by the EAB. Our final goal is to develop the technology to apply the EAB to the piping system of the actual plant. In this paper, the component test results are presented. From the test results, it is confirmed that the EAB has a large energy-dissipating effect and is effective for increasing the piping system damping. The EAB design method using beam theory is also developed.
1994-11-25