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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.12, 2009³â, pp.87-105
ÇÊ´ï Á¦Ã¼ Àç·áÀÇ µ¿Àû ¹°¼ºÄ¡ Æò°¡ : II. ºñ¼±Çü µ¿Àû º¯ÇüƯ¼º
( Estimation of Dynamic Material Properties for Fill Dam : II. Nonlinear Deformation Characteristics )
À̼¼Çö;±èµ¿¼ö;Ãß¿¬¿í;±ÇÇõ±â; Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;Çѱ¹½Ã¼³¾ÈÀü°ø´Ü, ÀÎõ´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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Á¤±ÔÈ­ Àü´Üź¼º°è¼ö °¨¼Ò°î¼±(G/$G_{max}-loggamma$)°ú °¨¼èºñ °î¼±(D-$loggamma$)À¸·Î Ç¥ÇöµÇ´Â ºñ¼±Çü µ¿Àû º¯ÇüƯ¼ºÀº ÇöÀå Àü´ÜÆÄ¼Óµµ ÁÖ»óµµ¿Í ÇÔ²² ÇÊ´ïÀÇ µ¿Àû ³»ÁøÇؼ®½Ã Áß¿äÇÑ ÀÔ·Â ¹°¼ºÄ¡·Î »ç¿ëµÈ´Ù. º» ³í¹®¿¡¼­´Â ÇÊ´ï ½Éº®ºÎ¿Í »ç·ÂºÎ °¢°¢¿¡ ´ëÇÏ¿© ÇÕ¸®ÀûÀÌ°í °æÁ¦ÀûÀÎ ºñ¼±Çü µ¿Àû º¯ÇüƯ¼º »êÁ¤ ¹æ¹ýÀ» Á¦½ÃÇÏ¿´´Ù. ½Éº®ºÎÀÇ °æ¿ì, ±âÁ¸ ¿©·¯ ¿¬±¸ °á°ú·ÎºÎÅÍ ½Éº®ºÎ ±¸¼º Àç·áÀÇ Á¶°ÇÀ» ¸¸Á·ÇÏ´Â Á¤±ÔÈ­ Àü´Üź¼º°è¼ö °¨¼Ò°î¼± 111°³, °¨¼èºñ °î¼± 98°³¸¦ È®º¸ÇÏ¿© 3°³ÀÇ ±¸¼ÓÀÀ·Â ¿µ¿ª(0~100kPa, 100kPa~200kPa, 200kPa Ãʰú)¿¡ ´ëÇÑ ´ëÇ¥ °î¼± ¹× ¹üÀ§¸¦ Á¦¾ÈÇÏ¿´°í, 2Á¾ÀÇ ±âÁ¸ ´ï ½Éº®ºÎ ½Ã·á¿¡ ´ëÇÑ °øÁøÁÖ ½ÃÇè °á°ú¿Í ºñ±³ÇÏ¿© ½Å·Ú¼ºÀ» È®ÀÎÇÏ¿´´Ù. »ç·ÂºÎÀÇ °æ¿ì, ÀÚ°¥ µî ÀÔÀÚ°¡ Å« »ç¼® Àç·á¿¡ ´ëÇØ ´ëÇü ½ÃÇèÀåºñ¸¦ ÀÌ¿ëÇÏ¿© ½ÃÇèÀ» ¼öÇàÇÑ ±¹¿Ü ¿¬±¸ °á°ú·Î ºÎÅÍ Á¤±ÔÈ­ Àü´Üź¼º°è¼ö °¨¼Ò°î¼± 135°³, °¨¼èºñ °î¼± 65°³¸¦ ȹµæÇÏ¿´´Ù. Á¤±ÔÈ­ Àü´Üź¼º°è¼ö °¨¼Ò°î¼±Àº 3°³ÀÇ ±¸¼ÓÀÀ·Â ¿µ¿ª(50kPa ÀÌÇÏ, 50kPa~100kPa, 100kPa Ãʰú)¿¡ ´ëÇØ ´ëÇ¥ °î¼±À» Á¦¾ÈÇÏ¿´°í, °¨¼èºñ °î¼±Àº ±¸¼ÓÀÀ·Â¿¡ °ü°è¾øÀÌ ÇϳªÀÇ ´ëÇ¥ °î¼±À¸·Î Á¦¾ÈÇÏ¿´´Ù. ¶ÇÇÑ ÇöÀç ½Ã°øÁßÀÎ B´ïÀÇ »ç¼® Àç·á¿¡ ´ëÇÑ °á°ú¿Í ºñ±³ÇÏ¿© ´ëÇ¥ °î¼± ¹× ¹üÀ§¿¡ ´ëÇÑ ½Å·Ú¼ºÀ» °ËÁõÇÏ¿´´Ù.
Nonlinear dynamic deformation characteristics, expressed in terms of normalized shear modulus reduction curve (G/$G_{max}-loggamma$, G/$G_{max}$ curve) and damping curve (D-$loggamma$), are important input parameters with shear wave velocity profile ($V_s$-profile) in the seismic analysis of (new or existing) fill dam. In this paper, the reasonable and economical methods to evaluate the nonlinear dynamic deformation characteristics for core zone and rockfill zone respectively are presented. For the core zone, 111 G/$G_{max}$ curves and 98 damping curves which meet the requirements of core material were compiled and representative curves and ranges were proposed for the three ranges of confining pressure (0~100 kPa, 100 kPa~200 kPa, more than 200 kPa). The reliability of the proposed curves for the core zone were verified by comparing with the resonant column test results of two kinds of core materials. For the rockfill zone, 135 G/$G_{max}$ curves and 65 damping curves were compiled from the test results of gravelly materials using large scale testing equipments. The representative curves and ranges for G/$G_{max}$ were proposed for the three ranges of confining pressure (0~50 kPa, 50 kPa~100 kPa, more than 100 kPa) and those for damping were proposed independently of confining pressure. The reliability of the proposed curves for the rockfill zone were verified by comparing with the large scale triaxial test results of rockfill materials in the B-dam which is being constructed.
 
Ű¿öµå
Core zone;Damping curve (D-$loggamma$);Fill dam;Normalized shear modulus reduction curve (G/$G_{max}-loggamma$);Rockfill zone;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.12, 2009³â, pp.87-105
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200919061726868)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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