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埋設ライフラインパイプの地震時ひずみ

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.12 (1980) No.2

埋設ライフラインパイプの地震時ひずみ

Earthquake-induced Structural in Underground LIfeline Pipes 小池 武(Takeshi Koike) 要旨 : 埋設パイプラインの耐震設計法を確立するために地震動によって生起された地盤の最大ひ ずみから埋設パイプに発生するひずみを推定する一つの方法を提案した。本研究の目的は (1) 直管，90°ベント管，T 字管に発生するひずみを地盤ひずみから求めるための簡便な 変換係数を誘導する，(2) 典型的な埋設パイプラインモデルに対して，それぞれの変換係数 を具体的に求めることにより，耐震解析に必要な判断資料を提供する，ことにある。 Synopsis :

The risk analysis methodology developed for underground pipeline systems makes use of a conversion factor β in order to estimate the structural strain in the underground pipelines induced by the propagating seismic wave. The purposes of this study are (a) to derive a practical procedure to estimate the conversion factor that can be used for straight and bent pipes and tee-junction, and (b) to determine conversion factors for a number of typical cases in order to provide the analyst with the numerical insight as to its values consistent with the physical conditions to which the pipeline sistem is subjected.

(c)JFE Steel Corporation, 2003

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