LOW STRAIN SHEAR MODULI OF CEMENTED SANDS
LOW STRAIN SHEAR MODULI OF CEMENTED SANDS
复制标题
胶结砂的低应变剪切模量
DOI：
10.1061/(asce)1090-0241(1997)123:6(540
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
S. Nazarian
中科院分区：
文献类型：
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作者：
S. Baig;M. Picornell;S. Nazarian
轻胶结砂在低应变水平下的动态特性已经成为几篇已发表文章的主题。用于测定这些性能的主要技术是扭振柱试验。在共振柱试验中，对试件端板耦合提出了一些问题。目前的研究使用了压电陶瓷弯曲元件，并将先前的研究结果与利用独立技术获得的结果进行了比较，该技术不会像使用谐振柱装置那样引起相同类型的关注。研究结果表明，围压对人工胶结砂试件最大模量（Gmax）的影响可以忽略不计。这证实了在以前的工作中存在的与试件端板耦合的问题。决定胶结砂模量的主要变量是胶结率，其次是砂的相对密度。
The dynamic properties of lightly cemented sands at low strain levels have been the subject of several published articles. The main technique used for the determination of these properties has been the torsional resonant column test. Some questions have been raised regarding the specimen end plattens coupling in the resonant column test. The present study makes use of piezo ceramic bender elements and compares previous findings with those obtained from utilizing an independent technique that does not pose the same type of concerns as those raised from using the resonant column device. The results of the present study show that there is a negligible effect of confining pressure on the measured maximum modulus (Gmax) of artificially cemented sand specimens. This confirms the existence of problems with coupling of specimen end plattens in previous work. The main variables that determine the moduli of the cemented sand are the percentage of cementation, and to a lesser degree the relative density of the sand ...