SHAKE TABLE TESTS ON RESIDUAL DEFORMATION OF SANDY SLOPES DUE TO CYCLIC LOADING

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概要

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• The evidence of earth structure damages due to earthquakes and the need for study on relatively dense and unsaturated earth structures such as river dikes and road embankments motivated this research work. A series of shake table tests were performed in order to provide the needed experimental data for this study. During the experimental program, two types of soils, i.e. Toyoura sand and a sample from natural deposits of sandy material were used. A rectangular laminar box was mounted over a rigidly fabricated slope and subjected to horizontal shaking. Sweep tests and Swedish sounding tests were also performed in order to measure the material properties. The results of these tests show the effect of different parameters such as amplitude of cyclic loading, number of cycles, initial static shear stress, confining pressure and shear stress history (loading-unloading, over-consolidation and creep time) on shear deformation of unsaturated slopes during and after cyclic loading. The outcomes of the test results are used as a basis to develop a new single degree of freedom model of mass and nonlinear spring over a slope. Stress-strain behavior of the soil is defined as a nonlinear stiffness function of a spring. Time dependent input acceleration is considered as the base excitation and the induced inertia force is superimposed on the initial static shear stress. The numerical solution of the equation of motion of the model predicted the residual deformation of the system at the end of shaking. Several cases were analyzed and compared with the test results.

• 社団法人地盤工学会の論文
• 2003-12-15

著者

• 東畑 郁生

  Department of Civil Engineering, The University of Tokyo.

• 東畑 郁生

  Department Of Civil Engineering University Of Tokyo

• MOHAJERI MASOUD

  Researcher, 3-D Full-Scale Earthquake Testing Facility Research Projects, National Research Institut

• Towhata I

  Univ. Tokyo Tokyo Jpn

• Mohajeri Masoud

  Researcher 3-d Full-scale Earthquake Testing Facility Research Projects National Research Institute

関連論文

• 2003年バム地震におけるバム市内の地盤と基礎構造の挙動
• GEOTECHNICAL RECONNAISSANCE STUDY ON DAMAGE CAUSED BY 2001 GUJARAT EARTHQUAKE, INDIA
• SEISMIC SOIL-STRUCTURE INTERACTION OF CROSS SECTIONS OF FLEXIBLE UNDERGROUND STRUCTURES SUBJECTED TO SOIL LIQUEFACTION
• LABORATORY INVESTIGATION ON RATE-DEPENDENT PROPERTIES OF SAND UNDERGOING LOW CONFINING EFFECTIVE STRESS
• A THREE-DIMENSIONAL STRESS-STRAIN MODEL OF SAND UNDERGOING CYCLIC ROTATION OF PRINCIPAL STRESS AXES
• DEFORMATION BEHAVIOR OF SANDY SLOPES DURING RAINWATER INFILTRATION
• RESPONSE OF UNSATURATED SANDY SOILS UNDER CONSTANT SHEAR STRESS DRAINED CONDITION
• SHAKE TABLE TESTS ON RESIDUAL DEFORMATION OF SANDY SLOPES DUE TO CYCLIC LOADING
• STRESS-STRAIN BEHAVIOR OF COMPACTED SANDY MATERIAL UNDER CYCLIC SIMPLE SHEAR
• EFFECTS OF SUPERIMPOSING CYCLIC SHEAR STRESS ON THE UNDRAINED BEHAVIOR OF SATURATED SAND UNDER MONOTONIC LOADING
• UNDRAINED SHEAR CHARACTERISTICS OF SATURATED SAND UNDER ANISOTROPIC CONSOLIDATION
• MODEL FOR THE DEFORMATION OF SAND DURING ROTATION OF PRINCIPAL STRESS DIRECTIONS
• SHEAR WORK AND PORE WATER PRESSURE IN UNDRAINED SHEAR
• UNDRAINED STRENGTH OF SAND UNDERGOING CYCLIC ROTATION OF PRINCIPAL STRESS AXES

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