EFFECTS OF VARIOUS PARAMETERS ON THE STIFFNESS AND DAMPING OF SOILS AT SMALL TO MEDIUM STRAINS
EFFECTS OF VARIOUS PARAMETERS ON THE STIFFNESS AND DAMPING OF SOILS AT SMALL TO MEDIUM STRAINS
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
K. Stokoe;S. Hwang;Jn-K Lee;R. Andrus
中科院分区：
文献类型：
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作者：
K. Stokoe;S. Hwang;Jn-K Lee;R. Andrus
三个不同的动态实验室研究的结果。第一项研究包括评估各向异性应力状态和固有各向异性对土骨架小应变刚度的影响。在立方体校准室中对干重塑砂进行了压缩和剪切波速测量。交叉各向异性模型的应用，这些测量也提出。第二项研究涉及调查围压，激励频率，应变振幅和加载循环次数对原状和重塑土的剪切模量和材料阻尼的影响。试验采用共振柱和扭剪组合试验装置，着重评价材料的剪切阻尼。第三项研究涉及调查原状和重塑试样的水泥粉砂的剪切模量。现场地震测试也允许比较现场和实验室值的剪切波速度的胶结砂。有关覆盖摘要，请参见IRRD 892179。
The results of three different dynamic laboratory studies are presented. The first study involved evaluating the effects of anisotropic stress state and inherent anisotropy on the small-strain stiffness of the soil skeleton. Compression and shear wave velocity measurements were performed on a dry remolded sand in a cubical calibration chamber. Application of a cross-anisotropic model to these measurements is also presented. The second study involved investigating the effects of confining pressure, excitation frequency, strain amplitude and number of loading cycles on the shear modulus and material damping of undisturbed and remolded soils. Combined resonant column and torsional shear equipment was used, and evaluation of material damping in shear was emphasized. The third study involved investigating the shear modulus of undisturbed and remolded specimens of cemented silty sand. In situ seismic testing also permitted comparison of field and laboratory values of shear wave velocity of the cemented sand. For the covering abstract, see IRRD 892179.