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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.4, 2009³â, pp.5-17
HWAW ±â¹ýÀÇ ºñ¼öÆò Ãâ»ó±¸Á¶Áö¹Ý Àû¿ë¿¡ ´ëÇÑ °íÂû
( A Study on Application of HWAW Method to the Non-horizontally Layered Soil Structure )
¹æÀº¼®;¹ÚÇåÁØ;¹ÚÇüÃá;±èµ¿¼ö; Çѱ¹ÁöÁúÀÚ¿ø¿¬±¸¿ø Áö¹Ý¾ÈÀü¿¬±¸ºÎ;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;Ãæ³²´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;
 
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HWAW ±â¹ýÀº ½Ã°£-Á֯ļö ÇØ¼®À» ÅëÇØ ½ÅÈ£/ÀâÀ½ºñ°¡ ÃÖ´ë°¡ µÇ´Â ºÎºÐÀ» ÀÌ¿ëÇÏ¿© ½ÇÇè ºÐ»ê°î¼±À» ȹµæÇϰí full wavefield¸¦ °í·ÁÇÏ´Â Á¤¸ðµ¨¸µ ±â¹ýÀ» ÅëÇØ ¿ª»êÀ» ¼öÇàÇÑ´Ù. µû¶ó¼­ ´Ù¸¥ Ç¥¸éÆÄ ±â¹ý¿¡ ºñÇØ ªÀº Ãø¼± ¼³Á¤ÀÌ °¡´ÉÇϸç 2Â÷¿ø Àü´ÜÆÄ ¼Óµµ ºÐÆ÷¸¦ µµÃâÇϱ⿡ À¯¸®ÇÏ´Ù. ¼öÆòÃþ °¡Á¤ÀÌ ¼º¸³µÇÁö ¾Ê´Â Áö¹Ý¿¡¼­ÀÇ HWAW ±â¹ý Àû¿ë¼ºÀ» Æò°¡Çϱâ À§Çؼ­ ¼öÄ¡ÇØ¼® °ËÁõ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. HWAW ±â¹ýÀ» ÅëÇØ °¢ °Å ¸®º°·Î ȹµæÇÑ ½ÇÇè ºÐ»ê°î¼±µéÀº Àü¹ÝÀûÀ¸·Î full wavefield¸¦ °í·ÁÇÑ ÀÌ·Ð ºÐ»ê°î¼±°ú À¯»çÇÑ ÇüŸ¦ º¸ÀÌ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. °æ»ç¸é ¹Ý»çÆÄ¿¡ ÀÇÇÑ ºÐ»ê°î¼±ÀÇ ¿Ö°îÇö»óÀº ÀûÀýÇÑ °¨Áö±â °£°Ý Á¶ÀýÀ» ÅëÇØ ÁÙ¿©ÁÙ ¼ö ÀÖÀ½À» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. µµÃâµÈ ½ÇÇè ºÐ»ê°î¼±Àº °¡Áø ¿øÀ¸·ÎºÎÅÍ °¨Áö±â±îÁöÀÇ ¿µ¿ªº¸´Ù´Â °¨Áö±â »çÀÌ ¿µ¿ª¿¡ ÁÖµÇ°Ô ¿µÇâÀ» ¹Þ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. À̷νá HWAW ±â¹ýÀ¸·Î ÇÕ¸®ÀûÀÎ Àü´ÜÆÄ ¼Óµµ ºÐÆ÷ÀÇ µµÃâÀÌ °¡´ÉÇÑ °ÍÀ¸·Î ÆÇ´ÜµÇ¾úÀ¸¸ç °íÂûÇÑ °á°ú¸¦ ¹ÙÅÁÀ¸·Î ½ÇÁ¦ ÇöÀå¿¡¼­ Áö¹Ý ¿µ»óÈ­¸¦ ½ÃµµÇÏ¿´´Ù.
In HWAW method, experimental dispersion curve is obtained through time-frequency analysis, and inversion procedure is based on the forward modeling which considers full wavefield. Therefore, it enables us to use relatively short testing setup and has advantage for two dimensional subsurface imaging compared with another surface wave methods. Numerical study was performed to verify that the HWAW method can be applied to non-horizontally layerd soil structure. The experimental dispersion curves obtained from HWAW method agreed with the theoretical dispersion curves based on full wavefield. Experimental dispersion curves are mainly more affected by the region between two receivers than by the region from source to the first receiver. Fluctuation phenomena of dispersion curve can be reduced by adequate receiver spacing setup. From numerical study, it was thought that reliable Vs distribution map can be constructed by HWAW method and finally subsurface imaging was tried in the real field.
 
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HWAW;Numerical simulation;Shear wave velocity;Surface wave methods;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.4, 2009³â, pp.5-17
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200919463915713)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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