平底円筒タンクに作用する地震時動液圧の評価

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タイトル別名
  • Evaluation of seismic dynamic pressures acting on cylindrical tank shell
  • 平底円筒タンクに作用する地震時動液圧の評価 : 動液圧評価手法の提案
  • ヒラゾコ エントウ タンク ニ サヨウ スル ジシンジドウ エキアツ ノ ヒョウカ : ドウ エキアツ ヒョウカ シュホウ ノ テイアン
  • － Proposal on seismic dynamic pressures evaluation －
  • ― 動液圧評価手法の提案 ―

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This work presents an evaluation method of the dynamic pressure acting on the cylindrical liquid storage tank for the modified seismic coefficient method which is a foremost important seismic resistant design method. A sim-ple equation of motion for the seismic response of cylindrical tanks from a velocity potential flow and the shear beam approach was developed for examining combination methods of two kinds of dynamic pressures acting on the cylindrical tank shell; namely, the dynamic pressures induced by the rigid motion and it induced by the flexile deformation of the tank shell. The time history analyses using by the artificial seismic wave, which represent the design response spectrum in the modified seismic coefficient method, were conducted. As the results, a rational combination method of two kinds of dynamic pressures for evaluating the modified seismic coefficient method is presented. The evaluated dynamic pressures obtained by the pre-sented method are compared and discussed with the dynamic pressures ob-tained by the current seismic resistant design guideline, and the applicability of the presented method is demonstrated.

収録刊行物

  • 圧力技術

    圧力技術 59 (1), 15-23, 2021

    一般社団法人 日本高圧力技術協会

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