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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.4, 2003³â, pp.299-310
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SASW½ÇÇè ºÐ»ê°î¼±ÀÇ ÀÚµ¿È °è»êÀ» À§ÇÑ Á֯ļö-ÆÄ¼ö ±â¹ý
( Frequency-Wave Number Method for the Automated Calculation of the Phase Velocities from the SASW Measurements ) |
| Á¶¼ºÈ£;°ÅÂÈ£; Áß¾Ó´ëÇб³ °Ç¼³´ëÇÐ Åä¸ñ°øÇаú;Áß¾Ó´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
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| SASW ½ÇÇèÀ¸·Î Áö¹ÝÀÇ Àü´Ü°¼º ±¸Á¶¸¦ ±¸ÇÏ´Â ÇØ¼®°úÁ¤¿¡ ÀÖ¾î¼ À§»ó¼ÓµµÀÇ °è»êÀº SASW ½ÇÇèÀÇ ½Å·Úµµ¸¦ Á¿ìÇÏ´Â ¸Å¿ì Áß¿äÇÑ ´Ü°èÀÌ´Ù. ±âÁ¸ÀÇ SASW ÀÚ·á ºÐ¼®±â¹ý Áß À§»ó¼ÓµµÀÇ °è»êÀº Àü¹®°¡Àû °æÇèÀ» ÀÌ¿ëÇÑ À§»ó°¢ ½ºÆåÆ®·³ÀÇ ºÐ¼®ÀÌ ¼±ÇàµÇ¾î¾ß Çϴµ¥, À§»ó°¢ ½ºÆåÆ®·³ ºÐ¼® °úÁ¤ÀÇ ³ÇؼºÀº SASW ±â¹ýÀÇ ÀϹÝÈ¿¡ Àå¾Ö°¡ µÇ¾î ¿Ô¾ú´Ù. º» ¿¬±¸¿¡¼´Â SASW ±â¹ý¿¡ Àû¿ë°¡´ÉÇϰí, À§»ó¼Óµµ °è»ê¿¡ Àü¹®°¡Àû °æÇèÀ» ¹èÁ¦ÇÒ ¼ö ÀÖÀ¸¸ç, ÀÚµ¿ÈÇÔÀ¸·Î½á È¿À²¼ºÀ» Á¦°íÇÒ ¼ö ÀÖ´Â À§»ó¼Óµµ °è»ê ±â¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. º» ¿¬±¸¿¡¼ Á¦¾ÈÇÑ ±â¹ýÀº ´ÙÃþ±¸Á¶ Áö¹Ý¿¡¼ÀÇ Ç¥¸éÆÄÀÇ Á֯ļöÆÄ¼ö Ư¼ºÀ» ÀÌ¿ëÇÏ¿´À¸¸ç, ±× °³³ä¿¡ ±âÃÊÇÏ¿© Á֯ļöÆÄ¼ö ±â¹ý(Frequency-Wave Number Technique)À̶ó°í ÇÏ¿´´Ù. º» ¿¬±¸¿¡¼ Á¦¾ÈÇÑ ±â¹ýÀÇ ½Å·Ú¼ºÀ» °ËÁõÇϱâ À§ÇÏ¿©, SASW ¼öÄ¡½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ±×¸®°í SASW ¼öÄ¡½ÇÇè¿¡ ÀÇÇØ ±¸ÇÑ ÀÌ·Ð Àü´ÞÇÔ¼ö·ÎºÎÅÍ À§»ó¼Óµµ¸¦ °è»êÇÏ¿©, À§»ó°¢Àü°³¹ýÀ¸·Î ±¸ÇÑ À§»ó¼Óµµ¿Í ºñ±³ °ËÅäÇÏ¿´´Ù. ¶ÇÇÑ, °æ±âµµ$igcirc$$igcirc$ Áö±¸¿¡¼ ¼öÇàÇÑ SASW ½ÇÇèÀÚ·á¿¡ ´ëÇØ º» ¿¬±¸¿¡¼ Á¦¾ÈÇÑ ±â¹ýÀ» Àû¿ëÇÏ¿© ÇöÀåÀû¿ë¼º ¹× ½Ç¿ë¼ºÀ» È®ÀÎÇÏ¿´´Ù. |
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| In the evaluation of the subgrade stiffness structure by the SASW method, the calculation of the phase velocities is the important task controlling the reliability of the result. The interpretation of the phase spectrum should precede the phase-velocity calculation in the current practice of the SASW method. The difficulty involved in the interpretation prohibited the SASW method from being spread over to the industry. This study proposed a new method called the frequency-wave number technique, which is based on the frequency-wave number relationship of the surface wave in the multi-layered system. The frequency-wave number technique eliminates the expertise in the interpretation of the phase spectrum, automates the phase-velocity calculation and expedites the determination of the phase-velocity dispersion curve. To verify the validity of the proposed frequency-wave number method, the transfer function determined from the numerical simulation of the SASW measurements was used fir the calculation of the automatic calculation of the phase velocities and compared with the phase velocities by WinSASW employing the phase-unwrapping method. Also, the proposed method was applied to the real SASW measurements performed at$igcirc$$igcirc$area in GyeongGi-Do to see how the proposed method works with the real measurements. |
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| Ű¿öµå |
| Dispersion curve;Frequency-wave number plot;Phase velocity;SASW method;Surface wave; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.4, 2003³â, pp.299-310
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921886673)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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