掲載雑誌(和):日本地震工学シンポジウム論文集
Vol:10-2巻
年: 1998年
頁: 1757-1762頁
著者(和): 三輪 滋,池田 隆明,原田 尚幸,高津 忠,水取 和幸,大岡 弘
タイトル(和): 兵庫県南部地震により被災した埋立地盤に建つ鋼管杭基礎構造物の被害の検討
抄録(和): 兵庫県南部地震で被災した鋼管杭基礎構造物に対し,被害調査,地盤調査,航空写真測量を実施した.これらに基づいて,地盤の液状化を考慮した質点系の地盤−杭−構造物連成モデルによる地震応答解析,護岸を考慮した側方流動の影響の解析を行い,杭基礎構造物の地震時挙動を検討するとともに,その被害原因について検討した.検討の結果,杭は,地震時に液状化したまさ土埋立地盤の影響でまさ土層の底面付近と液状化層の表層に近い部分で大きな変形が生じ,破損した可能性が高いと考えられる.また,上部構造物も同時に損傷し,さらに地盤の護岸方向への側防流動により,杭に残留変形が生じたものと考えられる.
キーワード(和): -
掲載雑誌(英): THE EARTHQUAKE ENGINEERING SYMPOSIUM PROCEEDINGS
著者(英): Shigeru MIWA,Takaaki IKEDA,Naoyuki HARADA,Tadashi TAKATSU,Kazuyuki MIZUTORI,Hiroshi OH-OKA
タイトル(英): A STUDY ON DAMAGE OF STEEL PILE FOUNDATION ON RECLAIMED LAND DURING HYOGOKEN-NANBU EARTHQUAKE
抄録(英): Damage investigation, soil investigation and surveying by aerial photography were performed on a steel-pile structure damaged by liquefaction during Hyogoken-Nanbu earthquake. Dynamic response analysis considering liquefaction by a lumped-mass model of soil-pile-structure interaction, and evaluation of residual displacement of lateral flow by liquefaction near the shore protection were conducted in order to examine the dynamic behavior of the pile structure during earthquake and causes of damage. As a result, it was presumed that piles were damaged because large deformation of piles took place at the base boundary and top surface of the liquefied “masado” layer, and the superstructure was damaged simultaneously. Still more, residual deformation was found to have occurred on piles by lateral flow of ground.
キーワード(英): -
記事区分: -
区分: 委員会論文集