论文信息 - SHEAR MODULUS AND DAMPING BY DRAINED TESTS ON CLEAN SAND SPECIMENS RECONSTITUTED BY VARIOUS METHODS

SHEAR MODULUS AND DAMPING BY DRAINED TESTS ON CLEAN SAND SPECIMENS RECONSTITUTED BY VARIOUS METHODS

ABSTRACT Comprehensive tests on a clean sand were performed to evaluate the effects of the methods of sample preparations on shear moduli and hysteretic damping ratios of sands with use of a resonant-column apparatus and a static torsional shear device. All of the tests were conducted under the fully drained condition. Specimens for resonant-column tests were solid cylindrical and those for torsional shear tests were hollow cylindrical. These specimens were sheared torsionally and cyclically. It was found that for a wide range of shear strain the shear modulus and the hysteretic damping ratio of the sand tested by cyclic drained shear tests are quite insensitive to the methods of sample preparations adopted in this investigation. These include the different methods of pouring, compacting, moistening, saturating, unsaturating or so.

[1] F. Tatsuoka,et al. Undrained Deformation and Liquefaction of Sand under Cyclic Stresses , 1975 .

[2] Richard S. Ladd,et al. SPECIMEN PREPARATION AND LIQUEFACTION OF SANDS , 1974 .

[3] W. D. Liam Finn,et al. EFFECT OF STRAIN HISTORY ON LIQUEFACTION OF SAND , 1970 .

[4] Vincent P. Drnevich,et al. DYNAMIC PRESTRAINING OF DRY SAND , 1970 .

[5] Kenji Ishihara,et al. Yielding of Overconsolidated Sand and Liquefaction Model under Cyclic Stresses , 1978 .

[6] Fumio Tatsuoka,et al. Hysteretic Damping of Sands under Cyclic Loading and its Relation to Shear Modulus , 1978 .

[7] Marshall L. Silver,et al. LIQUEFACTION POTENTIAL EVALUATED FROM CYCLIC STRAIN-CONTROLLED PROPERTIES TESTS ON SANDS , 1976 .

[8] Fumio Tatsuoka,et al. SHEAR MODULI OF SANDS UNDER CYCLIC TORSIONAL SHEAR LOADING , 1978 .

[9] F. E. Richart,et al. STRESS-HISTORY EFFECTS ON SHEAR MODULUS OF SOILS , 1973 .

[10] F C Townsend,et al. Cyclic Triaxial Strength of Standard Test Sand , 1976 .

[11] M. Oda. INITIAL FABRICS AND THEIR RELATIONS TO MECHANICAL PROPERTIES OF GRANULAR MATERIAL , 1972 .

[12] Fumio Tatsuoka,et al. EFFECTS OF GRAIN SIZE AND GRADING ON DYNAMIC SHEAR MODULI OF SANDS , 1977 .