Effects of fabric anisotropy on elastic shear modulus of granular soils
Effects of fabric anisotropy on elastic shear modulus of granular soils
复制标题
织物各向异性对粒状土弹性剪切模量的影响
DOI：
10.1007/s11803-014-0229-x
复制
发表时间：
2014-05
影响因子：
2.8
通讯作者：
Zeng xiangwu
中科院分区：
文献类型：
--
作者：
Li Bo;Zeng xiangwu
粒状土存款的组构各向异性对其工程性质和性状有很大的影响。本文介绍了一种新的实验研究的结果，旨在研究织物各向异性的影响，小应变刚度和它的演变与加载的弹性剪切模量的粒状材料在aK 0条件下。两种主要的组构各向异性，即，沉积诱导的和颗粒形状诱导的。使用0°和90°取向的沉积角制备了相对密度为40%和80%的Toyoura砂沉积物。压电传感器被用来获得在垂直和水平方向上的弹性剪切模量（GvhandGhh）。测量结果表明，在不同的沉积角度的G值的明显差异。颗粒形状引起的组构各向异性进行了研究，使用四个选定的砂。结果表明，球形度是影响颗粒材料小应变刚度的主要因素。组构各向异性程度是表征加载和卸载应力循环过程中应力诱导组构演化的良好指标。实验数据被用来校准现有的细观力学模型，这是能够合理地代表颗粒材料的行为和组构各向异性的程度。
The fabric anisotropy of a granular soil deposit can strongly influence its engineering properties and behavior. This paper presents the results of a novel experimental study designed to examine the effects of fabric anisotropy on smallstrain stiffness and its evolution with loading on the elastic shear modulus of granular materials under aK0condition. Two primary categories of fabric anisotropy, i.e., deposition-induced and particle shape-induced, are investigated. Toyoura sand deposits with relative densities of 40% and 80% were prepared using deposition angles oriented at 0° and 90°. Piezoelectric transducers were used to obtain the elastic shear modulus in the vertical and horizontal directions (GvhandGhh). The measurements indicate distinct differences in the values ofGwith respect to the different deposition angles. Particle shapeinduced fabric anisotropy was examined using four selected sands. It was concluded that sphericity is a controlling factor dominating the small-strain stiffness of granular materials. The degree of fabric anisotropy proves to be a good indicatorin the characterization of stress-induced fabric evolution during loading and unloading stress cycles. The experimental data were used to calibrate an existing micromechanical model, which was able to represent the behavior of the granular material and the degree of fabric anisotropy reasonably well.
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DOI：
10.1007/978-1-4615-6373-0_2
发表时间：
1997
期刊：
--
影响因子：
--
作者：
B. H. Kaye
通讯作者：
B. H. Kaye
影响因子：
4
作者：
Chung-Jung Lee;H. Y. Huang
通讯作者：
Chung-Jung Lee;H. Y. Huang
影响因子：
5.8
作者：
E. Bowman;K. Soga;W. Drummond
通讯作者：
E. Bowman;K. Soga;W. Drummond
影响因子：
5.8
作者：
L. Cui;C. O’Sullivan
通讯作者：
L. Cui;C. O’Sullivan
DOI：
10.1061/(asce)1090-0241(1999)125:9(741
发表时间：
1999-09
影响因子：
3.9
作者：
X. Zeng;B. Ni
通讯作者：
X. Zeng;B. Ni