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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.1, 2006³â, pp.35-44
½ÇÆ®Áú ¸ð·¡Áö¹ÝÀÇ ºñ¼±Çü °­µµ ¹× °­¼ºµµ ÃßÁ¤¹ý
( Estimation of Non-linear Strength and Stiffness for Silty Sands )
À̰æ¼÷;±èÇöÁÖ;ÀÌÁØÈ¯; Çö´ë°Ç¼³¢ß Åä¸ñ¼³°è½Ç Áö¹ÝÆÀ;¿¬¼¼´ëÇб³ °Ç¼³°øÇבּ¸¼Ò;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;
 
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In general typically granular soils contain a certain amount of fines. It is also widely recognized that foundation soils under working loads show highly non-linear behavior from very early stages of loading. In the present study, a series of laboratory tests with sands of different silt contents are conducted and methods to assess strength and stiffiness characteristics are proposed. Modified hyperbolic stress-strain model is used to analyze non-linearity of silty sands in terms of non-linear Degradation parameters f and g as a function of silt contents and Relative density Dr. Stress-strain curves were obtained from a series of triaxial tests on sands containing different amounts of silt. Initial shear modulus, which is used to normalize Degradation modulus of silty sands, was determined from resonant column test results. From the laboratory test results, it was observed that, as the Relative density increases, values of f decrease and those of g increase. In addition, it was found that values of f and g increase and decrease respectively as a Skeleton void ratio $(e_{sk})$ increases.
 
Ű¿öµå
Degradation parameters;Hyperbolic model;Relative density;Silty sand;Skeleton void ratio;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.1, 2006³â, pp.35-44
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200612842603188)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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