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苏南地区新近沉积土的动剪切模量比与阻尼比-自然灾害学报-地震
15 3 Vo.l 15, No. 3
2006 6 JOURNAL OF NATURAL D ISASTERS Jun. , 2006
: 1004-4574( 2006) 03- 0116- 07
) ) )
刘雪珠, 陈国兴, 朱定华, 胡庆兴
( , 210009)
: , , ,
, ,
155 4 ,
G / G D C
m ax
, G / Gm ax - CD - C
: ; ; ; ;
: TU411. : A
Dynam ic shear modulus ratio and dam ping ratio of recently deposited soils
in southern area of Jiangsu Province: experim ental study
L IU Xue-zhu, CHEN Guo-xing, ZHU D ing-hua, HU Q ing-xing
( Institute of GeotechnicalEngineering, Nanjing University of Technology, Nanjing 210009, China)
Abstract: Site soils in southern area of Jiangsu Province belong to w ashland sedmi ent or lmi netic facies sedmi ent.
The composition of those sedmi ent are very comp lex and process of sedmi entation is in disorder. In add ition, satu-
rated fine sand and silt d istributew idely and phenomena of earthquake-induced soft settlement or sand liquefaction
may happen. Th is paper analyzes the test results of 155 undisturbed samp les of recently deposited soils from south-
ern area of Jiangsu Province during four years includ ing mucky silty clay, clay/ silty clay, interbedded silty clay/
silty sand, silt, silty sand, fine sand andmedium sand. The average fitting curves betw een dynam ic shearmodu lus
ratioG /Gmax asw ell as damp ing ratioD and shear strain amplitude C, and their parameters in the emp irical formula
ofG /Gmax - C andD - C curves for types of soils mentioned above are presented. Moreover, this paper provides
typ ical values andmean square deviation of theG /Gm ax - Ca
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