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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 21号
  1. 部局別インデックス
  2. 農学部

過圧密粘土のセン断強度特性におよぼす過圧密比の影響(農業工学科)

http://hdl.handle.net/20.500.12000/4371
http://hdl.handle.net/20.500.12000/4371
43aeeba0-6520-4d2b-a296-a770d4aa3792
名前 / ファイル ライセンス アクション
KJ00000162475.pdf KJ00000162475.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 過圧密粘土のセン断強度特性におよぼす過圧密比の影響(農業工学科)
言語 ja
作成者 宜保, 清一

× 宜保, 清一

ja 宜保, 清一

Gibo, Seiichi

× Gibo, Seiichi

en Gibo, Seiichi

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 ピーク強度(τ_f)は垂直応力(σ)の関数であるばかりでなく過圧密比(n_P)の関数でもある。すなわち次式が成り立つ。τ_f=b+T・σ^n・n_P上式においてnpを先行圧密荷重(P_0)で置き換えると, τ_f=b+T・σ^<n-1>・P_0ここにb, T, nは土性によって決まる定数である。これはP_0の一次関数であると同時に, P_0を一定にした場合のτ_f&acd;σ関係すなわち過圧密領域のセン断強度特性を示す。したがって, 強度定数を求めるためには, 問題にしている過圧密領域のτ_f&acd;σ関係の湾曲部を直線で置き換えて限定包絡線とする。このように, 任意の粘土に対しある限られた範囲のτ_f&acd;n_P関係を実験的に求めることによってその定数が決まるので, P_0が変化した場合のτ_f&acd;σの特性と強度定数を推定できる。
内容記述タイプ Other
内容記述 The shear strength line of an overconsolidated clay has a curvature when the shear strengths are determined by undrained tests and plotted against total normal stresses (σ). The degree of the curvature increases regularly with increasing preconsolidation stress (P_0) and overconsolidation ratio (n_p). In this paper the mathematical relationships that exist between the shear strength envelopes and P_0 and n_p are developed. The results are summarized as follows : 1. The peak strength (τf) may be expressed in terms of σ and n_p : ^τf=b^^^- + T. σ^n. n_p where b^^^-, T and n are constants dependent on the degree of overconsolidation and a given soil. 2. Using P_0 as a replacement for n_p, the following expression is obtained : τf=b^^^- + T. σ^<n-1>. P_0 It shows not only the fact that the value of τf is proportional to the value of P_0,but also the relationship between τf and σ for P_0=constant. 3. The constants b^^^-, T and n are therefore determined from τf&acd;n_p relationship in the limited stress range for a given soil, and then the shear strength curves for various preconsolidation stress can be illustrated.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/4371
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 21, p. 151-160
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