ダイレタンシー特性と有効応力変化, 発生間ゲキ水圧との関係

DOI Web Site

書誌事項

タイトル別名
  • Relations between Dilatancy Characteristics and the Changes in Effective Stress and Pore Water Pressure under Undrained Condition
  • ダイレタンシー トクセイ ト ユウコウ オウリョク ヘンカ ハッセイカン ゲキ

この論文をさがす

抄録

In this paper, it is shown that the changes in effective stress and pore water pressure in the undrained condition in saturated soils can be obtained from a new stress-strain relationship derived from the point of view that soils are regarded as essentially anisotropic deformable bodies. The calculated curves of the stress paths agree well with the empirical results from the tests on Sagami River sand conducted by Tatsuoka et. al as shown in Fig.3.<BR>Furthermore the following conclusions have been obtained:<BR>1) Skempton'spore-pressure coefficient A can be expressed in terms of the deformation coefficients D, G, and Ki introduced in the new stress-strain equations; whether A=1/3 or not is due not to elastic behaviour, but to the isotropic or anisotropic deformation behaviour of soils.<BR>2) In the undrained condition the deformation condition in which the volume of soil does not change dose not govern directly change in pore water pressure but the change in the effective mean normal stress. The pore water pressure change is not independent of external loads (=total stress), the effective mean normal stress is independent of the external loads but depends only on the deformation characteristics of compression and dilatancy.<BR>3) The characteristics of the undrained stress paths can be explained in connexion with the deformation characteristics of compression and dilatancy (Fig. 7).

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ