Study on piping response under multiple excitation (validation for elastic-plastic analysis of piping)

配管の多点入力応答に関する研究(弾塑性解析の検証)

甲斐 聡流*; 渡壁 智祥; 金子 尚昭*; 都知木 邦裕*; 森泉 真; 月森 和之

Kai, Satoru*; Watakabe, Tomoyoshi; Kaneko, Naoaki*; Tochiki, Kunihiro*; Moriizumi, Makoto; Tsukimori, Kazuyuki

原子力プラントの配管は複数の支持点を有することから、地震時には多点入力挙動を示す。本報では、弾塑性域における配管の多点入力解析手法の妥当性について試験結果との比較により検証した結果について報告する。

Piping in a nuclear power plant is usually laid across several floors of a single building or adjacent buildings, and is supported at many points. As the piping is excited by a large earthquake through multiple supporting points, seismic response analysis by multiple excitations within the range of plastic deformation of piping material is necessary to obtain the precise seismic response of the piping. This paper reports the validation results of the seismic elastic-plastic time history analysis of piping compared with the results of the shaking test of a 3-dimensional piping model under a plastic deformation range using triple uni-axial shake table.