MODELING ANISOTROPIC BEHAVIOR OF GRAVELLY LAYER IN HUALIEN, TAIWAN

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概要

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• The Hualien Large-Scale Seismic Test (HLSST) program is under way to investigate soil-structure interaction during earthquakes in Hualien, a high-seismicity region in Taiwan. Since anisotropic characteristics of the gravelly layer affect the results of earthquake observation and forced vibration tests, the gravelly layer was modeled by an orthotropic elastic body in this paper to enhance the accuracy of the dynamic simulation analysis. The following conclusions are drawn. (1) The gravelly layer was modeled by an orthotropic elastic body whose model parameters were partly determined using results of earthquake observation. (2) The azimuth dependency of the shear wave velocity measured by the cross hole velocity logging can be expressed by the orthotropic elastic body model. (3) It can be explained by the orthotropic elastic body model that values of shear wave velocity measured by down-hole velocity logging were divided into two groups. (4) The initial shear moduli of undisturbed samples from the gravelly layer evaluated by cyclic triaxial tests agree with the calculated results by the orthotropic elastic body. (5) The anisotropic behavior of the model building during forced vibration tests can be expressed successfully by the orthotropic elastic body.

• 2001-06-15

著者

• 田中 幸久

  Central Research Institute Of Electric Power Industry

• 田中 幸久

  Senior Research Engineer, Geotechnical and Earthquake Engineering Department, Central Research Insti

関連論文

• SMALL STRAIN CHARACTERISTICS OF SOILS IN HUALIEN, TAIWAN
• Evaluation of Undrained Cyclic Strength of Gravelly Soil by Shear Modulus (IS-LYON 2003「地盤材料の変形特性」特集号)
• MODELING ANISOTROPIC BEHAVIOR OF GRAVELLY LAYER IN HUALIEN, TAIWAN
• UNDRAINED CYCLIC STRENGTH OF GRAVELLY SOIL AND ITS EVALUATION BY PENETRATION RESISTANCE AND SHEAR MODULUS
• A METHOD FOR EVALUATING MEMBRANE COMPLIANCE AND SYSTEM COMPLIANCE IN UNDRAINED CYCLIC SHEAR TESTS

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