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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.5, 2006³â, pp.59-67
»ó»ç¹ýÄ¢ °ËÁõÀ» À§ÇÑ 1-g ¸ðÇü½ÇÇè°ú ¿ø½É¸ðÇü½ÇÇèÀÇ ºñ±³ ¿¬±¸
( Comparison of 1-g and Centrifuge Model Tests for Similitude Laws )
±è¼º·Ä;ȲÀçÀÍ;±è¸í¸ð;; µ¿¾Æ´ëÇб³ Åä¸ñÇØ¾ç°øÇаú;¹Ì±¹ ¹öŬ¸® ´ëÇÐ Åä¸ñȯ°æ°øÇаú;¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;;
 
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µ¿ÀÏÇÑ ÈëÀ¸·Î Á¶¼ºµÈ ¸ðÇüÁö¹Ý¿¡ ´ëÇÏ¿© 1-g ¸ðÇü½ÇÇè°ú ¿ø½É¸ðÇü½ÇÇèÀ» ¼öÇàÇÏ°í ±× °á°ú¸¦ ºñ±³ÇÏ¿´´Ù. ¿øÇüÁö¹ÝÀº 10m µÎ²²ÀÇ ¼öÆòÇÏ°í ´À½¼ÇÑ Æ÷È­ »çÁúÅä Áö¹ÝÀ¸·Î °¡Á¤ÇÏ¿´´Ù. 1-g ¸ðÇü½ÇÇèÀº 1/20 Ãà¼Ò¸ðÇü, ¿ø½É¸ðÇü½ÇÇèÀº 1/40 Ãà¼Ò¸ðÇüÀ» ÀÌ¿ëÇÏ¿´´Ù. ¿ø½É¸ðÇü½ÇÇèÀÇ °æ¿ì Á¡¼ºÀ¯Ã¼¸¦ »ç¿ëÇÏ¿© µ¿Àû½Ã°£¿¡ ´ëÇÑ »ó»çºñ¿Í °úÀ×°£±Ø¼ö¾Ð¼Ò»ê½Ã°£¿¡ ´ëÇÑ »ó»çºñ°¡ µ¿ÀÏÇϵµ·Ï ÇÏ¿´´Ù. ¿ø½É¸ðÇü½ÇÇèÀÇ °èÃø°á°ú´Â ¿øÇüÁö¹ÝÀÇ °Åµ¿À¸·Î °¡Á¤ÇÏ¿´´Ù. ±×¸®°í, 1-g¸ðÇü½ÇÇè¿¡ Á¤»ó»óŰ³³ä ¹× µÎ °¡Áö ½Ã°£»ó»çºñ µîÀ» Àû¿ëÇÏ¿© ¿øÇüÁö¹ÝÀÇ °Åµ¿À» ¸ð»çÇϰíÀÚ ÇÏ¿´´Ù. µ¿ÀÏÇÑ À§Ä¡¿¡¼­ÀÇ °úÀ×°£±Ø¼ö¾Ð, Áö¹Ý°¡¼Óµµ ±×¸®°í ÁöÇ¥ ħÇÏ·® µîÀ» °èÃøÇÏ¿© ºñ±³ÇÏ¿´´Ù. ½ÇÇè°á°ú Áö¹ÝÀÇ Åõ¼ö°è¼ö°¡ À۾Ƽ­ Áøµ¿ Áß °úÀ×°£±Ø¼ö¾Ð ¼Ò»êÀÇ ¿µÇâÀÌ ÀÛ°í, ¼Ò»ê½Ã°£»ó»çºñ¸¦ ÀûÀýÇÏ°Ô °áÁ¤Çϸé 1-g ¸ðÇü½ÇÇèÀ¸·ÎºÎÅÍ ¿øÇüÁö¹ÝÀÇ °úÀ×°£±Ø¼ö¾Ð °Åµ¿À» ¸ð»çÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The centrifuge and 1-g shaking table tests were performed simultaneously to compare the dynamic behaviors of loose sands of the same geotechnical properties. The prototype soils were 10 m thick liquefiable loose sands. The geometric scaling factors were 20 for 1-g and 40 for centrifuge tests. The excess pore pressure, surface settlement, and acceleration in the soil were measured at the same locations in the 1-g and centrifuge tests. The total excess pore pressure from development to dissipation was measured. In the centrifuge test, viscous fluid was used as the pore water to eliminate the time scaling difference between dynamic time and dissipation time. In the 1-g tests, the steady state concept was applied to determine the unit weight of the model soil, and two different time scaling factors were applied for the dynamic time and the dissipation time. It is concluded that the 1-g tests can simulate the excess pore pressure of the prototype soil if the permeability of the model soil is small enough to prevent dissipation of excess pore pressure during shaking and the dissipation time scaling factor is properly determined.
 
Ű¿öµå
1-g model test;Centrifuge test;Liquefaction;Shaking table test;Similtude law;Steady state concept;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.5, 2006³â, pp.59-67
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200626813151281)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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