EFFECT OF THE SHAPE OF CYCLIC LOADING ON DAMPING RATIO AT SMALL STRAINS

スポンサーリンク

概要

• 論文の詳細を見る

• A series of 69 cyclic tests was conducted to study the damping properties of two reconstituted sands and three laboratory-made clays at small cyclic shear strain amplitudes γ_c≈0.001-0.04%. A recently developed constantvolume equivalent-undrained direct simple shear device for small-strain testing was employed. The specific effect of the shape of cyclic strain-time history on the equivalent viscous damping ratio, λ, was investigated. The results show that λ can be significantly affected by the shape of the cyclic strain-time history because of the viscous nature of soil material response and the associated effects of creep and relaxation. As the shape of the cyclic strain-time history is changed from triangular to sinusoidal, and further from trapezoidal to square, λ at small strains may increase by a factor of two or more. The test results show that this effect was largest for clays, smaller for silty sand and negligible for clean sand.

• 社団法人地盤工学会の論文
• 1998-03-15

著者

• Vucetic Mladen

  Civil And Environmental Engineering Dept. University Of California Los Angeles

• Vucetic Mladen

  Civil And Environmental Engineering Department University Of California

• LANZO GIUSEPPE

  Structural and Geotechnical Engineering Dept., University of Rome "La Sapienza", Italy

• DOROUDIAN MACAN

  Civil and Environmental Engineering Dept., University of California, Los Angeles

• Lanzo Giuseppe

  Structural And Geotechnical Engineering Dept. University Of Rome "la Sapienza" Italy

• Doroudian Macan

  Civil And Environmental Engineering Dept. University Of California Los Angeles

関連論文

• INFLUENCE OF SOIL TYPE ON THE EFFECT OF STRAIN RATE ON SMALL-STRAIN CYCLIC SHEAR MODULUS
• EFFECT OF THE SHAPE OF CYCLIC LOADING ON DAMPING RATIO AT SMALL STRAINS

スポンサーリンク