東日本大震災において被害を受けた杭基礎の耐震性の評価

• 金子 治

  戸田建設(株)技術研究所　工修

• 中井 正一

  千葉大学大学院工学研究科　教授・工博

書誌事項

タイトル別名

• EVALUATION OF SEISMIC PERFORMANCE OF PILE FOUNDATIONS DAMAGED DURING THE 2011 GREAT EAST JAPAN EARTHQUAKE
• ヒガシニホン ダイシンサイ ニ オイテ ヒガイ オ ウケタ クイ キソ ノ タイシンセイ ノ ヒョウカ

抄録

There were several cases reported where buildings had to stop functioning normally because of the damage to foundations during the 2011 Great East Japan earthquake. The authors carried out static analyses using a foundation structure model in order to investigate the cause of damage to pile foundations by focusing on three typical buildings. Lateral load at pile head and differential movement of soils were estimated based on a seismic response analysis by using recorded ground motions of the 2011 Great East Japan earthquake and by looking into the soil profiles and structural characteristics of buildings. Load-deformation characteristics of pile elements and soil springs were formulated so that the model can incorporate nonlinear behaviors. Results obtained from the analysis explain fairly well the actual damage of pile foundations. It was confirmed that a controlling factor causing damage to pile foundations is the existence of soft soils and the variation of surface soil layers. The proposed procedure can be considered as a practical seismic design method of foundations that ensures a required performance for large earthquakes.

収録刊行物

• 日本建築学会構造系論文集

  日本建築学会構造系論文集 79 (695), 83-91, 2014

  日本建築学会

キーワード

• 杭基礎
• 東日本大震災
• 地震被害
• 耐震設計
• 地盤変形
• 地盤ばね

詳細情報

• CRID: 1390282680581875072
• NII論文ID: 130004508375
• NII書誌ID: AN10438559
• DOI: 10.3130/aijs.79.83
• ISSN: 18818153
• ISSN: 13404202
• NDL書誌ID: 025135882
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025135882
• Web Site: https://www.jstage.jst.go.jp/article/aijs/79/695/79_83/_pdf
• 本文言語コード: ja
• データソース種別:
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