BEHAVIOR ESTIMATION METHOD OF FAULT TRAVERSAL UNDERGROUND BURIED PIPELINE AND BEHAVIOR ESTIMATION DEVICE OF FAULT TRAVERSAL UNDERGROUND BURIED PIPELINE

PROBLEM TO BE SOLVED: To provide a behavior estimation method of a fault traversal underground buried pipeline capable of simply obtaining a degree of precision without using a large scale simulation device.SOLUTION: A behavior estimation method of a fault traversal underground buried pipeline includes: a level of the displacement influence estimation step, which is executed when a bending angle of a specific aseismatic joint constituting the pipeline by the fault displacement exceeds a reference allowable bending angle α, of obtaining a level of the displacement influence k showing a ratio of a shift amount δj of the specific aseismatic joint for a fault displacement excess amount δ by an estimation formula using coefficients P1i and P2i of each category for at least two target amounts P1 and P2 determined based on the quantification theory type 1; and an aseismatic joint behavior estimation step of calculating a bending angle θ of the aseismatic joint with respect to an assumed fault displacement amount on the basis of the displacement influence k and estimating the behavior of the aseismatic joint on the basis of a calculated bending angle θ.SELECTED DRAWING: Figure 6 【課題】大掛かりなシミュレーション装置を用いず簡易に精度が得られる断層横断埋設管路の挙動推定方法を提供する。【解決手段】断層変位により管路を構成する特定耐震継手の屈曲角度が基準許容屈曲角度αを超える場合に実行され、断層変位超過量δに対する特定耐震継手のずれ量δｊの比率を示す変位影響度ｋを、数量化理論１類に基づいて定めた少なくとも２つの目的変量Ｐ１及びＰ２に対する各カテゴリの係数Ｐ１ｉ，Ｐ２ｉを用いた推定式で求める変位影響度推定ステップと、変位影響度ｋに基づいて想定断層変位量に対する耐震継手の屈曲角度θを算出し、算出した屈曲角度θに基づいて耐震継手の挙動を推定する耐震継手挙動推定ステップと、を含む断層横断埋設管路の挙動推定方法。【選択図】図６