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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.1, 2006³â, pp.53-61
¿ø½É¸ðÇü½ÇÇèÀ» ÀÌ¿ëÇÑ ¾×»óÈ­ ¸ð·¡Áö¹ÝÀÇ °úÀ×°£±Ø¼ö¾Ð ¼Ò»ê°Åµ¿ ºÐ¼®
( Evaluation of Dissipation Behavior of Excess Pore Pressure in Liquefied Sand Deposit Using Centrifuge Tests )
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Áö¹Ý ¾×»óÈ­´Â ÈëÀ¯Ã¼°£ÀÇ º¹ÀâÇÑ µ¿Àû»óÈ£ÀÛ¿ë¿¡ ÀÇÇØ ¹ß»ýÇϹǷΠ¾×»óÈ­ Çö»óÀ» ±Ô¸íÇÏ°í ¾×»óÈ­ ¸ðµ¨¸µÀ» À§ÇÑ µ¥ÀÌŸ¸¦ ¾ò±â À§ÇÏ¿© ½ÇÇèÀ» ÅëÇÑ ¾×»óÈ­ ¿¬±¸°¡ ³Î¸® ¼öÇàµÇ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ¿øÁö¹ÝÀÇ ±¸¼Ó¾ÐÀ» ¸ð»çÇÒ ¼ö ÀÖ´Â ¿ø½É¸ðÇü½ÇÇèÀ» ¼öÇàÇÏ¿© ¼öÆòÁö¹ÝÀÇ ¾×»óÈ­ °Åµ¿À» ºÐ¼®ÇÏ¿´´Ù. 25cmµÎ²²ÀÇ Áö¹Ý¿¡ 40gÀÇ ¿ø½É°¡¼Óµµ¸¦ °¡ÇÏ¿© 10m µÎ²²ÀÇ ¿øÁö¹ÝÀ» ¸ð»çÇÏ¿´´Âµ¥, µ¿ÀûÁøµ¿°ú ¼Ò»êÀÇ ½Ã°£»ó»çºñ Â÷À̸¦ Á¦°ÅÇϱâ À§ÇØ Á¡¼ºÀ¯Ã¼¸¦ »ç¿ëÇÏ¿´´Ù. ½ÇÇè°á°ú·ÎºÎÅÍ °úÀ×°£±Ø¼ö¾Ð ¼Ò»ê°Åµ¿Àº ħ°­Çö»ó°ú ¾Ð¹ÐÇö»óÀÇ º¹ÇÕÀû ÀÛ¿ë°á°úÀÓÀ» È®ÀÎÇÏ¿´´Ù. ¶ÇÇÑ, ħ°­¼Óµµ, Áö¹Ý °¡¼Óµµ ÁøÆø, ±×¸®°í ÀÔÀÚħ°­½ÃÀÇ µ¿Àû Åõ¼ö°è¼ö °ªÀº Áö¹Ý ±¸¼Ó¾ÐÀÇ ¿µÇâÀ» Å©°Ô ¹ÞÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù.
Soil liquefaction occurs by complex dynamic interaction between soil particles and pore fluid. Therefore, experimental researches have been widely performed to analyze liquefaction phenomena. In this research, centrifuge tests were performed to analyze the liquefaction behavior of horizontal sand ground. Centrifugal acceleration was 40g and the thickness of model ground was 25cm, which simulates 10m thickness in prototype scale. Viscous fluid was used as pore fluid to remove the time scaling difference between dissipation and dynamic shaking. Test results showed that the dissipation of excess pore pressure is the combined behavior of solidification and consolidation. In addition, the solidification rate, the ground acceleration amplitude, and the dynamic permeability during solidification were influenced by the confining pressure.
 
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Centrifuge test;Dissipation;Earthquake;Excess pore pressure;Liquefaction;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.1, 2006³â, pp.53-61
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200612842603461)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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