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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.8, 2007³â, pp.47-57
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Áؼ³¸Å¸³Áö¹ÝÀÇ ¾×»óÈ °£Æí¿¹Ãø °³¼±¿¡ °üÇÑ ¿¬±¸
( Improvement Scheme of Simplified Liquefaction Potential Evaluation for a Dredged and Reclaimed Ground ) |
| Á¤¹ÎÇü;±èÁÖÇö;Á¤»ó±¹;À̼Û; ¼¿ï½Ã¸³´ëÇб³ Åä¸ñ°øÇаú;¾ËÁö¿ÀÀÌ¿£¾¾;¼Û¿ø´ëÇÐ Åä¸ñ°è¿;¼¿ï½Ã¸³´ëÇб³ Åä¸ñ°øÇаú;
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| º» ¿¬±¸´Â »çÁúÅä·Î Áؼ³¸Å¸³µÈ Áö¹ÝÀÇ ¾×»óÈ Æò°¡¸¦ À§ÇØ ¹Ýµå½Ã ¿ä±¸µÇ´Â Ãʱ⠹еµÆ¯¼ºÀ» ºÐ¼®ÇÏ¿´°í, ±¹³» ³»Áø ¼³°è±âÁØ¿¡¼ Á¦½ÃÇÑ SPT-NÀ» ÀÌ¿ëÇÑ ¾×»óÈ °£Æí¿¹Ãø ¹æ¹ýÀÇ ¹®Á¦Á¡À» ºÐ¼®ÇÏ¿© °³¼±¹æ¾ÈÀ» Á¦½ÃÇÏ¿´´Ù. ±âÁ¸ ½Ã°ø»ç·Ê¸¦ Åä´ë·Î ¸Å¸³ Á÷ÈÄ Áؼ³¸Å¸³Áö¹ÝÀÇ ¹ÐµµÆ¯¼ºÀ» ºÐ¼®ÇÑ °á°ú, »ó´ë¹Ðµµ¿Í Ãʱâ N°ªÀº ´ëü·Î °¢°¢ $40{sim}50%,;5{sim}8$ÀÇ ¹üÀ§¿¡ ºÐÆ÷ÇÏ¿´´Ù. ¾×»óÈ °£Æí¿¹Ãø¿¡ ÀÖ¾î¼ À¯È¿»óÀç¾Ð º¸Á¤ÀÇ Liao & whitman½ÄÀº Ç×»ó ÁöÁø¿¡ Ãë¾àÇÑ »óºÎÃþÀÌ ÇϺÎÃþº¸´Ù ¾×»óÈ ÀúÇ×ÀÀ·ÂÀÌ Å©°Ô »êÁ¤µÇ¾î Skempton½ÄÀÇ Àû¿ëÀÌ ÃßõµÈ´Ù. ¶ÇÇÑ, ¼³°è´Ü°è¿¡¼ Áؼ³¸Å¸³ Áö¹ÝÀÇ ½Éµµº° N°ªÀ» »êÁ¤ÇÒ °æ¿ì¿¡´Â, À¯È¿ÀÀ·Â¿¡ µû¸¥ N°ªÀÇ º¯È¸¦ ³ªÅ¸³»´Â ´©½ÂÇÔ¼ö $N=1.35{sigma}^{'0.75}$¸¦ ÀÌ¿ëÇÏ¿© ¾×»óÈ °£Æí¿¹ÃøÀ» ½Ç½ÃÇÒ °ÍÀ» ÃßõÇÑ´Ù. |
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| In this study, the analysis of density characteristics of some dredged and reclaimed ground sites, which is necessary for liquefaction evaluation of a dredged and reclaimed ground, was conducted. From analyzing a simplified liquefaction potential evaluation using SPT-N values which have been applied as domestic earthquake-resistant design criterion, improvement scheme is suggested. Based on the analysis result of density characteristics, it was found out that the relative density and the intial N-value ranged respectively $40{sim}50%;and;5{sim}8$. In the case of applying Liao & Whitman's equation to correct effective overburden pressure, liquefaction resistance of the upper ground that is relatively weaker than that of lower ground is overestimated. So, Skempton's equation is recommended. And the N value with depth which is applied for design process should be estimated by the exponential equation, $N=1.35{sigma}'^{0.75}$. |
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| Ű¿öµå |
| Correction effective overburden pressure;Initial N value;Liquefaction potential evaluation;Liquefaction resistance; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.8, 2007³â, pp.47-57
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200734516348553)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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