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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.1, 2004³â, pp.61-73
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( The Phase-velocity Dispersion Characteristics of Love Wave and Rayleigh Wave in the Half Space and Multi-layered System ) |
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| ·¹ÀÏ·¹ÀÌÆÄ¿Í ·¯ºêÆÄ´Â ź¼ºÆÄ Áß¿¡¼ Ç¥¸éÆÄ¿¡ ¼ÓÇÏ´Â °ÍÀ¸·Î, ¸Å¿ì Áß¿äÇÑ Ç¥¸éÆÄ·Î Àνĵǰí ÀÖ´Ù. ·¯ºêÆÄÀÇ ÆÄµ¿ ÀüÆÄ½Ã ¸ÅÁú³»¿¡ ¹ß»ýµÇ´Â º¯ÇüÀº SHÆÄ¿Í °°Àº Àü´ÜÇüÅÂÀ̹ǷÎ, ·¯ºêÆÄ´Â P-ÆÄ¿¡ ÀÇÇØ ±³¶õµÇÁö ¾Ê´Â Ư¼ºÀÌ ÀÖ´Ù. ÀÌ·¯ÇÑ Æ¯¼ºÀ¸·Î ÀÎÇÏ¿© ·¯ºêÆÄ°¡ ·¹ÀÏ·¹ÀÌÆÄ³ª ´Ù¸¥ üÀûÆÄº¸´Ù ´õ À¯¿ëÇÑ Åº¼ºÆÄ·Î Àνĵǰí ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â Ç¥¸éÆÄ¸¦ Ȱ¿ëÇÏ´Â ´ëÇ¥Àû ½ÇÇè±â¹ýÀÎ SASW ±â¹ý¿¡¼ ·¯ºêÆÄ¸¦ µµÀÔÇϰíÀÚ ÇÏ´Â ¸ñÀûÀ¸·ç ÀÌ·ÐÀû, ¼öÄ¡ÇØ¼®Àû, ½ÇÇèÀû ¹æ¹ýÀ¸·Î ·¯ºêÆÄÀÇ À§»ó¼Óµµ ºÐ»ê Ư¼ºÀ» ¿¬±¸ÇÏ¿´´Ù. ƯÈ÷, ·¯ºêÆÄÀÇ ¼öÆò¼ººÐ°ú ·¹ÀÏ·¹ÀÌÆÄÀÇ ¼öÁ÷ ¼öÆò ¼ººÐÀÇ Æ¯¼ºÀ» ¿¬±¸Çϱâ À§ÇÏ¿©, ¹Ý¹«ÇÑ Áö¹Ý, 2Ãþ ±¸Á¶ÀÇ Áö¹Ý¿¡ ´ëÇÏ¿© 2Â÷¿ø,3Â÷¿ø À¯ÇÑ¿ä¼Ò ÇØ¼®À» ¼öÇàÇÏ¿´´Ù. ¶ÇÇÑ, ¼öÄ¡ÇØ¼®À¸·Î ȹµæÇÑ ·¯ºêÆÄ¿Í ·¹ÀÏ·¹ÀÌÆÄ¿¡ ´ëÇÑ °á°ú¸¦ È®ÀÎÇϱâ À§ÇÏ¿© ÀÏ¹Ý Áö¹Ý¿¡¼ ÇöÀå½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ÀÌ¿Í °°Àº ¼öÄ¡ÇØ¼®°ú ÇöÀå½ÇÇèÀ» ÅëÇÏ¿© ·¯ºêÆÄÀÇ À§»ó¼Óµµ ºÐ»êƯ¼ºÀÌ SASW ±â¹ýÀÇ Á¤È®¼º°ú ½Å·Ú¼ºÀ» ´õ¿í Çâ»ó½Ã۱â À§ÇÑ Ãß°¡ ÀÚ·á·Î ¸Å¿ì À¯¿ëÇÒ °ÍÀ̶ó´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù. |
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| Rayleigh wave and Love wave are the major elastic waves belonging to the category of the surface wave. The fact that Love wave is not contaminated by P-wave makes Love wave superior to Rayleish wave and other body waves. Therefore, the information that Love wave carries is more distinct and clearer than the information of Rayleigh wave. In this study, for the purpose of employing Love wave in the SASW method, the dispersion characteristics of the Love wave were extensively investigated by the theoretical, numerical and experimental approaches. The 2-D and 3-D finite element analyses for the half space and two-layer systems were performed to determine the phase velocities from Love wave as well as from both the vertical and the horizontal components of Rayleigh wave. Also, the SASW measurements were performed at the geotechnical sites to verify the results obtained by the numerical analysis. The results of the numerical analysis and the field testing indicated that the dispersion characteristics of Love wave can be an extended information to make better evaluation of the subsurface stiffness structure by SASW method. |
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| Ű¿öµå |
| Dispersion;Love wave;Rayleigh wave;SASW method;Surface wave; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.1, 2004³â, pp.61-73
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922288637)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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