A NEW APPROACH TO DETERMINE SOIL PARAMETERS FREE FROM REGIONAL VARIATIONS IN SOIL BEHAVIOR AND TECHNICAL QUALITY
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概要
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In order to evaluate soil parameters free from regional variations both in soil behaviour and technical quality, a new procedure to determine the shear strength for design use, τ_<f(mob)> as well as consolidation yielding stress, σ'_y is proposed. Various methods to determine τ_<f(mob)> in current practice are first reviewed and it is then revealed that regional difference in technical quality is significant. It is indicated that cone penetrometer, sheathed field vane and direct shear tests are recommended as the tests to minimize the effect of quality difference together with that the direct shear strength offsets the strength anisotropy and be uniquely related to τ_<f(mob)>. Results of investigations with the proposed method consisting of three tests described above are presented for three marine clays. Point resistance, field vane, direct shear and unconfined compression strengths were investigated and the correction factor to determine τ_<f(mob)> from these strengths are shown together with those proposed in various methods. It is demonstrated that σ_y'can be obtained from the shear strengths both in the field and in the normally consolidated state, and τ_<f(mob)> can uniquely be related to σ'_y irrespective of clay properties. Further, it is also shown that τ_<f(mob)> and σ'_y can be predicted without undisturbed samples when vane shear and direct shear strengths in the normally consolidated state are obtained.
- 社団法人地盤工学会の論文
- 1992-03-15
著者
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半沢 秀郎
Technical Research Institute, Toa Corporation
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半沢 秀郎
Technical Research Institute Toa Corporation
関連論文
- SHEAR STRENGTH AND CONSOLIDATION YIELDING STRESS OF PLEISTOCENE CLAY FOUND AT IZUMI-HILL OF OSAKA DISTRICT
- サンドサンプラーによる埋立て造成地盤の相対密度測定結果
- A CASE STUDY OF THE APPLICATION OF DIRECT SHEAR AND CONE PENETRATION TESTS TO SOIL INVESTIGATION : DESIGN AND QUALITY CONTROL FOR PEATY SOILS
- NORMALIZED UNDRAINED STRENGTH OF CLAY IN THE NORMALLY CONSOLIDATED STATE AND IN THE FIELD
- 正規圧密状態および原位置における粘土の正規化された非排水強度(『土質工学会論文報告集』Vol.32,No.1 (1992年3月発行)掲載論文の概要)
- NORMALIZED UNDRAINED STRENGTH OF CLAY IN THE NORMALLY CONSOLIDATED STATE AND IN THE FIELD
- EVALUATION OF ENGINEERING PROPERTIES FOR AN ARIAKE CLAY
- Normalized Undrained Strength of Clay in the Normally Consolidated State and in the Field(半沢秀郎,田中洋行著,本誌Vol.32,No.1,1992年3月掲載)
- A NEW APPROACH TO DETERMINE SOIL PARAMETERS FREE FROM REGIONAL VARIATIONS IN SOIL BEHAVIOR AND TECHNICAL QUALITY
- EVALUATION OF DESIGN PARAMETERS FOR SOFT CLAYS AS RELATED TO GEOLOGICAL STRESS HISTORY
- UNDRAINED STRENGTH CHARACTERISTICS OF NORMALLY CONSOLIDATED AGED CLAY
- THREE CASE STUDIES FOR SHORT TERM STABILITY OF SOFT CLAY DEPOSITS
- UNDRAINED STRENGTH CHARACTERISTICS OF NORMALLY CONSOLIDATED AGED CLAY
- THREE CASE STUDIES FOR SHORT TERM STABILITY OF SOFT CLAY DEPOSITS
- あるクイックサンドの非排水強度と安定解析
- UNDRAINED STRENGTH AND STABILITY ANALYSIS FOR A QUICK SAND
- UNDRAINED STRENGTH CHARACTERISTICS OF AN ALLUVIAL MARINE CLAY IN THE TOKYO BAY
- FIELD AND LABORATORY BEHAVIOUR OF KHOR AL-ZUBAIR CLAY, IRAQ
- GEOTECHNICAL PROPERTIES OF NORMALLY CONSOLIDATED FAO CLAY, IRAQ