Clarification of Damage Mechanism for Buried Pipelines of Telecommunication Systems Subjected to the 2011 off the Pacific Coast of Tohoku Earthquake

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  • SHOJI Gaku
    Faculty of Engineering, Information and Systems, University of Tsukuba
  • KISHI Taiyo
  • MIYAZAKI Fumihito
    Graduate School of Systems and Information Engineering, University of Tsukuba
  • WAKATAKE Masato
    Pipeline System Technology Group, Civil Engineering Project, NTT Access Network Service Systems Laboratories
  • ITO Akira
    Pipeline System Technology Group, Civil Engineering Project, NTT Access Network Service Systems Laboratories
  • SUZUKI Takanobu
    Toyo University

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Other Title
  • 東北地方太平洋沖地震の作用を受けた通信埋設管の被災分析

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Damage mechanism for buried pipelines of telecommunication systems subjected to the 2011 off the Pacific coast of Tohoku earthquake was clarified. Failure modes for 359 data were classified into 5 types. Relationships between the failure modes and indices of ground excitations such as peak ground acceleration, peak ground velocity and instrumental seismic intensity were revealed. The characteristics of damage ratio to reflect the differences in damage mechanisms of buried pipes affected by ground shakings and liquefaction were discussed.

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