構造物に要求される消費エネルギーに対して構造各部材に要求される塑性変形量とそのばらつきの評価法

書誌事項

タイトル別名
  • PROCEDURE TO OBTAIN VARIATION OF PLASTIC ROTATION DEMAND FOR GIVEN DISSIPATED ENERGY TO STRUCTURAL SYSTEMS
  • コウゾウブツ ニ ヨウキュウサレル ショウヒ エネルギー ニ タイシテ コウゾ

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This paper presents a simple procedure to obtain variation of plastic rotation demand for a given energy to be dissipated by a structural system. Plastic rotations of individual plastic hinges are computed as the sum of the rotations to be given before the system reaches its failure mechanism and the rotations to be given during the rigid body motion, and their variation is estimated from the first order approximation. It is found that (1)the proposed procedure is effective when the energy demand is not large and (2)the variation of plastic rotation demand increases when various failure modes are likely to occur and when larger energy demand is specified. It is pointed out that to ensure the failure mechanism specified in design is the key to control the plastic rotation demand.

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