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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.329-337
½ÇÁöÁøÇÏÁßÀ» ÀÌ¿ëÇÑ Æ÷È­»çÁúÅäÀÇ ¾×»óÈ­ ÀúÇ×°­µµ¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸
( An Experimental Study for the Liquefaction Resistance Strength of Saturated Sand Using Real Earthquake Loading )
½ÉÀç¿í;¹Ú±Ùº¸;ÃÖÀç¼ø;±è¼öÀÏ; ¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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ÃÖ±Ù±îÁö Áö¹ÝÀÇ ¾×»óÈ­ ÀúÇ×°­µµ¸¦ »êÁ¤Çϱâ À§ÇÑ ½Ç³»½ÃÇèÀÇ ´ëºÎºÐÀº ½ÇÁöÁøÇÏÁßÀ» ÀçÇÏÇϱ⺸´Ù´Â Seed¿Í Idriss(1975)°¡ Á¦¾ÈÇÑ µî°¡Àü´ÜÀÀ·Â °³³ä¿¡ ±âÃÊÇÏ¿© ÁöÁøÀÌ ¹ß»ý½ÃŰ´Â ÃÖ´ëÀü´ÜÀÀ·ÂÀÇ 65%¸¦ ÃÖ´ëÁøÆøÀ¸·Î ÇÑ Á¤ÇöÇÏÁßÀ» ¹Ýº¹ÀçÇϽÃÄѿԴÙ. ÀÌ·¯ÇÑ Á¤ÇöÇÏÁßÀÌ Á¤È®ÇÏ°Ô ½ÇÁ¦ Áö¹Ý¿¡ ÀÛ¿ëÇÏ´Â ºÒ±ÔÄ¢ÇÑ ÁöÁø·ÂÀ» ¸ð»çÇϰí ÀÖ´Ù°í º¼ ¼ö ¾øÀ¸³ª, ½ÃÇè»óÀÇ ÆíÀǼºÀ¸·Î ÀÎÇØ ÇöÀç±îÁöµµ ÀÌ¿ëÀÌ ºó¹øÇÑ ½ÇÁ¤ÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ½ÇÁ¦ ÁöÁøÇÏÁß ÇÏ¿¡¼­ Æ÷È­ »çÁúÅäÀÇ °Åµ¿º¯È­¸¦ ±Ô¸íÇϰíÀÚ Á¤ÇöÇÏÁßÀÌ ¾Æ´Ñ ºÒ±ÔÄ¢ÇÑ ÁöÁøÇÏÁßÀ» ÀÌ¿ëÇÑ ½ÇÇèÀû ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. ´Ù¾çÇÑ ÁöÁø±Ô¸ðÀÇ ½ÇÁöÁø ½Ã°£ÀÌ·ÂÀ» Áøµ¿ÇÏÁßÀ¸·Î ÀÛ¿ë½ÃŲ Áøµ¿»ïÃà½ÃÇèÀ» ÅëÇØ ÁöÁø±Ô¸ð ¹× Áö¼Ó½Ã°£ÀÇ º¯È­¿¡ µû¸¥ Æ÷È­»çÁúÅäÀÇ µ¿Àû Ư¼ºÀ» ½ÇÇèÀûÀ¸·Î ±Ô¸íÇÏ°í ±âÁ¸ÀÇ µî°¡Àü´ÜÀÀ·Â °³³ä¿¡ ±âÃÊÇÑ ¾×»óÈ­ ÀúÇ×°­µµ¿Í ºñ±³ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ, Áß¾àÁø ÁöÁø´ë·Î ±¸ºÐµÇ´Â ±¹³» ½ÇÁ¤À» °í·ÁÇÏ¿© ´Ù¾çÇÑ ÁöÁø±Ô¸ð¿¡ Àû¿ë°¡´ÉÇÑ ¼öÁ¤°è¼ö¸¦ Á¦½ÃÇϰí À̸¦ ±âÁ¸ÀÇ ¿¬±¸°á°ú¿Í ºñ±³ºÐ¼®ÇÏ¿´´Ù.
Based on the equivalent uniform stress concept presented by Seed and Idriss, sinusoidal cyclic loads which simplified the earthquake loads have been applied in evaluating the liquefaction resistance strength experimentally. However, the liquefaction resistance strength of soil based on the equivalent uniform stress concept can not exactly reflect the dynamic characteristics of the irregular earthquake motion. In this study, the criterion of the liquefaction resistance strength was determined by applying real earthquake loading to the cyclic triaxial test. From the test results, relationships between liquefaction behaviors of saturated sand and earthquake characteristics such as magnitude or time-duration were determined. Magnitude scaling factors to determine the soil liquefaction resistance strength in seismic design were also proposed.
 
Ű¿öµå
Duration;Earthquake loading;Liquefaction resistance strength;Magnitude;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.329-337
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921342201)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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