RIGID PLASTIC FEM ANALYSIS CONSIDERING INCLINED LOAD AND SIZE EFFECTS ON ULTIMATE BEARING CAPACITY OF SPREAD FOUNDATION ON SANDY SOILS

• KANEDA Kazuhiro

  Chief Researcher, Takenaka Research & Development Institute, Dr.Eng.

• AOKI Masamichi

  Executive Manager, Takenaka Research & Development Institute, Mr.Eng.

• OHTSUKA Satoru

  Prof., Department of Civil and Environmental Engineering, Nagaoka University of Technology, Dr.Eng.

Bibliographic Information

Other Title

• 剛塑性有限要素解析による砂質地盤の寸法効果と傾斜支持力の検討
• ゴウソセイ ユウゲン ヨウソ カイセキ ニ ヨル スナシツ ジバン ノ スンポウ コウカ ト ケイシャ シジリョク ノ ケントウ

Abstract

 In designing superstructures of buildings, it is important to estimate the ultimate bearing capacity of their foundations. The ultimate bearing capacity formula for foundations, which is specified in the guidelines published by the Architectural Institute of Japan for design of building foundation, is widely used by engineers. Recently, the evaluation of bearing capacity of foundations under large earthquakes has keenly been focused on. As the foundation width increases, its ultimate bearing capacity gets smaller than the capacity obtained by Terzaghi's formula for sandy grounds that is caused by the decline of their inertial friction angle or the progressive failure. Besides, the ultimate bearing capacity of large foundations against inclined loads has not been yet made clear. In this paper, by using rigid plastic finite element method, the ultimate bearing capacity of large foundations against inclined load is discussed. The obtained results of the FEM analysis are as follows. 1) The “size effect” can be explained analytically in the large spread foundation. by referring to some experimental, in which the friction angle declines when the mean effective stress becomes high. 2) for the friction angles 30 and 40 degrees, the size effect should be considered. However, in the case of the inertial friction angle of 40 degrees, the size effect is slightly smaller when compared to the case of 30 degrees.

Journal

• Journal of Structural and Construction Engineering (Transactions of AIJ)

  Journal of Structural and Construction Engineering (Transactions of AIJ) 81 (728), 1665-1671, 2016

  Architectural Institute of Japan

Keywords

• Rigid plastic FEM
• Ultimate bearing capacity
• Spread foundation
• Size effect
• Inclined load

Details

• CRID: 1390001205603652992
• NII Article ID: 130005267626
• NII Article ID: 200000365656
• NII Book ID: AN10438559
• DOI: 10.3130/aijs.81.1665
• ISSN: 18818153
• ISSN: 13404202
• NDL BIB ID: 027682792
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027682792
• Web Site: https://www.jstage.jst.go.jp/article/aijs/81/728/81_1665/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed