Shear modulus and damping ratio of cohesive soils

被引：79
|
作者：
Kallioglou, P. [1 ]
Tika, Th. [1 ]
Pitilakis, K. [1 ]
机构：
[1] Aristotle Univ Thessaloniki, Dept Civil Engn, Fdn & Geotech Earthquake Engn, Lab Soil Mech, Thessaloniki 54124, Greece
来源：
JOURNAL OF EARTHQUAKE ENGINEERING | 2008年 / 12卷 / 06期
关键词：
shear modulus; damping ratio; resonant-column; cohesive soils; seismic response;
D O I：
10.1080/13632460801888525
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This article presents results from a laboratory investigation into the dynamic characteristics of reconstituted and undisturbed cohesive soils by means of resonant-column tests. In particular, results showing the influence of various soil parameters, such as confining stress, overconsolidation ratio, void ratio, plasticity index, calcium carbonate content, and time of confinement on shear modulus and damping ratio at small and high shear strains are presented and then discussed. Relationships for the small-strain shear modulus, the degradation of shear modulus at high strains, and the increase of damping ratio at high strains over its small-strain value are proposed. Finally, the practical implications of the results in the context of seismic site response analysis are discussed.
引用
收藏
页码：879 / 913
页数：35
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