UNDRAINED STRENGTH OF SAND UNDERGOING CYCLIC ROTATION OF PRINCIPAL STRESS AXES
スポンサーリンク
概要
- 論文の詳細を見る
This study concerns the effects of continuous rotation of principal stress axes on excess pore water pressure development during cyclic loading. Continuous rotation of principal stress axes has been known to exert some influence on the development of excess pore water pressure and failure of sand during cyclic loading. In an effort to investigate this aspect of the problem, several series of cyclic undrained tests were carried out in a static manner on saturated sampes of sand using a triaxial torsion shear apparatus. In this test apparatus, a hollow cylindrical soil specimen is subjected to a simultaneous application of both triaxial and torsional modes of shear stresses, which brings about the continuous rotation of principal stress axes.The test results indicated that, while the angle of internal friction remains unaffected, the continuous rotation of principal stress axes substantially reduces the resistance of sand to liquefaction by generating a greater amount of excess pore water pressure than in the case without the rotation.Some special tests were also performed to examine the effects of previous liquefaction on the undrained behavior of sand during the subsequent cyclic loading. The results show that the sand having previously experienced large deformations due to liquefaction exhibit a highly anisotropic stress-strain characteristics, whereby reducing the resistance of the sand drastically when sheared in certain directions.
- 社団法人地盤工学会の論文
- 1985-06-15
著者
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東畑 郁生
Department Of Civil Engineering University Of Tokyo
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東畑 郁生
Professor Of Civil Engineering The University Of Tokyo Bunkyo Tokyo 108-8656 Japan.
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石原 研而
Department Of Civil Engineering Chuo University:department Of Civil Engineering Tokyo University Of
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