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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.3, 2005³â, pp.27-42
¹èÃß Á¶°Ç¿¡ µû¸¥ »çÁúÅä Áö¹ÝÀÇ µ¿Àû º¯ÇüƯ¼º
( Dynamic Deformation Characteristics of Sands Under Various Drainage Conditions )
Ãß¿¬¿í;±èµ¿¼ö; Çѱ¹°úÇбâ¼ú¿ø, °Ç¼³ ¹× ȯ°æ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø, °Ç¼³ ¹× ȯ°æ°øÇаú;
 
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º» ³í¹®¿¡¼­´Â Æ÷È­ ¹× ¹è¼ö Á¶°Ç¿¡ µû¸¥ »çÁúÅä Áö¹ÝÀÇ º¯ÇüƯ¼ºÀ» °³¼±µÈ Stokoe½Ä ºñƳÀü´Ü½ÃÇè±â¸¦ ÀÌ¿ëÇÏ¿© ºñ±³$cdot$°üÂûÇÏ¿´´Ù. ±âÁ¸ÀÇ Stokoe½Ä ºñƲ Àü´Ü ½ÃÇè±â¸¦ °³¼±ÇÏ¿© ½Ã·áÀÇ ¿ÏÀü Æ÷È­»óŸ¦ ¸¸µé°í, Æ÷È­ ¹è¼ö ¹× ºñ¹è¼ö Á¶°Ç¿¡¼­ ºñƳ Àü´Ü ½ÃÇèÀÌ °¡´ÉÇϵµ·Ï ÇÏ¿´°í, ¶ÇÇÑ, ºñ¹è¼ö ½ÃÇè¿¡¼­ °£±Ø¼ö¾ÐÀ» µ¿½Ã¿¡ ÃøÁ¤ÇÒ ¼ö ÀÖµµ·Ï ÇÏ¿´´Ù. ±¹³»¿¡¼­ äÃëµÈ ±Ý°­¸ð·¡¿Í ÀϺ»ÀÇ Åä¿ä¶ó ¸ð·¡¸¦ »ç¿ëÇÏ¿©, °ÇÁ¶, Æ÷È­ ¹è¼ö ¹× Æ÷È­ ºñ¹è¼ö Á¶°Ç, 3°¡Áö °£±Øºñ, 4°¡Áö ±¸¼ÓÀÀ·Â Á¶°ÇÀ» ´Þ¸®ÇÏ¿© ºñƳÀü´Ü½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ½ÃÇè°á°ú¸¦ ¹ÙÅÁÀ¸·Î, Àü´Üź¼º°è¼ö¿Í Àç·á °¨¼èºñ¸¦ °¢ Á¶°Ç¿¡ ´ëÇÏ¿© ¹Ýº¹ÇÏÁß ¹× º¯Çü·ü Å©±âÀÇ ¿µÇâÀ» ºñ±³$cdot$ºÐ¼®Çϰí, ¹è¼ö Á¶°Ç¿¡ µû¶ó ´Ù¸£°Ô ³ªÅ¸³ª´Â »çÁúÅä Áö¹ÝÀÇ Àúº¯Çü·ü (c) ¹× Áß°£ º¯Çü·ü (${10}^{-3}%)¿¡¼­ÀÇ º¯ÇüƯ¼ºÀ» °üÂûÇÏ¿´´Ù.
In this study, dynamic deformation characteristics of sands under dry, saturated drained and undrained conditions were investigated at small to intermediate strains using the modified Stokoe-type torsional shear tests. The equipment was modified to saturate the specimen and to maintain the B-value above 0.99 during the test. On two types of sands, Geumgang sand from Korea and Toyoura sand from Japan, tests were carried out at various drainage conditions, void ratios, and effective confining pressures. Based on the test results, dynamic deformation characteristics, shear modulus (G) and damping ratio (D), and/or pore-water pressure were measured with strain amplitude and number of loading cycles. Variations of G and D at small ($gamma_c<{10}^{-3}%$) to medium (${10}^{-3}%) strains were measured under various drainage conditions, and test results were intensively compared considering drainage conditions.
 
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Damping ratio;Drainage conditions;Saturation;Shear modulus;Torsional shear tests;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.3, 2005³â, pp.27-42
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200520828086225)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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