兵庫県南部地震における鋼管杭桟橋の被災メカニズム  [in Japanese] THE DAMAGE INVESTIGATION AND STRUCTURAL ANALYSIS OF STEEL PILE STRUCTURES IN KOBE PORT DURING 1995 EARTHQUAKE  [in Japanese]

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Abstract

平成7年兵庫県南部地震において, 大きな被災を受けた神戸港の鋼管杭式縦桟橋, 横桟橋およびドルフィンについて現地調査, 被災メカニズムに関する解析を行った.<br>桟橋の被害調査の結果により, 鋼管杭式桟橋の被害は周辺地盤の側方移動に起因していることが明らかになった. また, 静的な弾塑性解析により桟橋の被災メカニズムが定性的に説明が可能であるが, 絶対変位量まで含めて評価するためには, 非線形動的解析モデルが有効であることがわかった. さらに, 桟橋の水中振動台模型実験により, 側方移動をともなう横桟橋の残留変形がある程度再現可能であることがわかった.

The port structures in KOBE were heavily damaged after the Hanshin-Awaji Earthquake in 1995. This paper presents the damage investigation of the existing piers in KOBE Port such as dolphins and detached piers. Observed damages of the steel piles in KOBE Port are mainly caused by the lateral movement of surrounding soils and retaining walls behind the structure. The static elasto-plastic analysis is performed to ensure the damage mode. It is understood that the static analysis cannot proof the permanent deformation after the quake and it is necessary to perform the nonlinear dynamic analysis to get the proper deformation. The under-water shaking table tests are carried out to be compared with the observed damage and the numerical analysis.

Journal

  • Doboku Gakkai Ronbunshu

    Doboku Gakkai Ronbunshu 700, 81-94, 2002-03-20

    Japan Society of Civil Engineers

References:  17

Codes

  • NII Article ID (NAID)
    10008002152
  • NII NACSIS-CAT ID (NCID)
    AN10014020
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    02897806
  • NDL Article ID
    6100661
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-6
  • Data Source
    CJP  NDL  J-STAGE 
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