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Study on piping response under multiple excitation, 2; Validation for multiple analysis of piping

配管の多入力応答に関する研究,2; 多入力配管解析の検証

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

現行の配管耐震解析に多入力解析を適用することで配管強度評価の合理化が期待できる。本件では、3振動台を用いた加振試験から得た多入力を受ける配管の実挙動を解析で模擬し、解析による評価手法について検証した。

The piping in a nuclear power plant is laid across multiple floors of a single building or two buildings, which are supported at many points. As the piping is excited by multiple inputs from the supporting points during an earthquake, seismic response analysis by multiple excitations is needed to obtain the exact seismic response of the piping. However, few experiments involving such multiple excitations have been performed to verify the validity of multiple excitation analysis. To perform rational seismic design and evaluation, it is important to investigate the seismic response by multiple excitations and verify the validity of the analysis method by multiple excitation test. This paper reports the validation result of the multiple excitation analysis of piping compared with the results of the multiple excitations shaking test by using triple uni-axial shaking table and a 3-dimensional piping model (89.1 mm diameter and 5.5 mm thickness).

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