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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.6, 2009³â, pp.5-16
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CPT¿Í DMT¸¦ ÀÌ¿ëÇÑ ºÎ»êÁ¡ÅäÀÇ ÃÖ´ëÀü´Üź¼º°è¼ö ÃßÁ¤¹æ¹ý¿¡ °üÇÑ ¿¬±¸
( The Prediction Method of the Small Strain Shear Modulus for Busan Clay Using CPT and DMT ) |
| È«¼ºÁø;À±Çü±¸;ÀÌÁ¾¼·;ÀÌ¿ìÁø; °í·Á´ëÇб³ °ÇÃà »çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà »çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà »çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà »çȸȯ°æ°øÇаú;
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| º» ¿¬±¸´Â ÄÜ °üÀÔ½ÃÇè(CTP)°ú µô¶óÅä¹ÌÅͽÃÇè(DMT)À» ÀÌ¿ëÇÑ ºÎ»êÁö¿ª Á¡ÅäÀÇ ÃÖ´ëÀü´Üź¼º°è¼ö ÃßÁ¤($G_{max}$)¿¡ °üÇÑ °ÍÀÌ´Ù. À̸¦ À§ÇØ ºÎ»ê½ÅÇ× Áö¿ª°ú ³ì»êÁö¿ª¿¡¼ ÇÇ¿¡Á¶ÄÜ °üÀÔ½ÃÇè(CPT) ¹× ´Þ¶óÅä¹ÌÅͽÃÇè(DMT)¸¦ ¼öÇàÇÏ¿´À¸¸ç, ºñ±³¶õ ½Ã·á¸¦ äÃëÇÏ¿© hybrid oedometer ½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. Oedometer ³»º®¿¡ ÀåÂøµÈ º¥´õ¿¤¸®¸ÕÆ®·Î Àü´ÜÆÄ ¼Óµµ¸¦ ÃøÁ¤ÇÏ¿© ÃÖ´ëÀü´Üź¼º°è¼ö¸¦ »êÁ¤ÇÏ¿´À¸¸ç, À̸¦ ¹ÙÅÁÀ¸·Î ºÎ»êÁ¡ÅäÀÇ ÃÖ´ëÀü´Üź¼º°è¼ö¿Í ±¸¼ÓÀÀ·Â, °£±Øºñ, ÀÀ·ÂÀ̷°£ÀÇ °ü°è¸¦ ÆÄ¾ÇÇÏ¿´´Ù. ÇöÀå½ÃÇè ¹× ½Ç³»½ÃÇèÀ» ºÐ¼®ÇÑ °á°ú, $q_t$¿Í $G_{max}$ÀÇ »ó°ü°è¼ö ${alpha}_G$´Â ¼Ò¼ºÁö¼ö¿¡ ¹Ýºñ·ÊÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, $E_D$¿Í $G_{max}$ÀÇ »ó°ü°è¼ö $R_G$´Â ($I/I_D$)$(p_a/{sigma}'_v)^{0.5}$¿Í ºñ·Ê°ü°è¸¦ ³ªÅ¸³Â´Ù. ÀÌ·¯ÇÑ °ü°è¸¦ ¹ÙÅÁÀ¸·Î º» ¿¬±¸¿¡¼´Â CPT¿Í DMT ½ÃÇèÀ¸·ÎºÎÅÍ $G_{max}$¸¦ ÃßÁ¤ÇÏ´Â ¹æ¹ýÀ» °³¹ßÇÏ¿´À¸¸ç, Á¦¾ÈµÈ ¹æ¹ýÀº ºÎ»êÁ¡ÅäÀÇ ÃÖ´ëÀü´Üź¼º°è¼ö¸¦ ÀûÀýÇÏ°Ô ¿¹ÃøÇÏ´Â °ÍÀ¸·Î °üÂûµÇ¾ú´Ù. |
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| The is study is to evaluate the small strain shear modulus ($G_{max}$) of Busan clay using in-situ penetration tests. A series of dilatometer tests (DMT) and piezocone penetration tests (CPTu) are performed at Busan newport and Noksan sites, and hybrid oedometer tests are also carried out on the specimens obtained from both sites. The $G_{max}$ is evaluated from the shear wave velocity ($V_s$) measured by the bender elements installed at the boundary of oedometer cell. By analyzing these data, the relationship of $G_{max}$ and state variables, such as confined stress and void ratio, is developed. The analysis of lab and in-situ test results reveals that the ratio of $G_{max}$ to $q_t$ is inversely proportional to the plasticity index while the ratio of $G_{max}$ to $E_D$ has a linear relationship with ($I/I_D$)$(p_a/{sigma}'_v)^{0.5}$. Two correlations suggested in this study, based on CPT and DMT results, appear to provide reasonable predictions of the small strain shear modulus. |
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| Ű¿öµå |
| CPT;DMT;Shear wave velocity;Small strain modulus; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.6, 2009³â, pp.5-16
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200926158875958)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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