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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.55-64
´ëÇüÁöÁø½Ã ´ÙÃþÁö¹ÝÀÇ ÁöÁøÀÀ´äÇØ¼®
( Seismic Response Analysis at Multi-layered Ground During Large Earthquake )
±è¿ë¼º; ´ÙÀ̳ª¹Í Áö¿ÀÅ×Å©;
 
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º» ³í¹®¿¡¼­´Â Á¡Åº-Á¡¼Ò¼º ±¸¼º¸ðµ¨À» ´ÙÃþÁö¹Ý¿¡¼­ÀÇ ´ëÇüÁöÁø ¹ß»ý½ÃÀÇ Á¶°Ç¿¡ Àû¿ëÇϱâ À§ÇØ ÀϺ» °íº£ Æ÷Æ®¾ÆÀÏ·£µå¿¡¼­ ¹ß»ýÇÑ 1995 Hyogoken Nanbu ÁöÁø¿¡ ´ëÇÑ ÁöÁøÀÀ´ä ÇØ¼®À» ¼öÇàÇÏ¿´´Ù. ÁöÁøÀÀ´äÇØ¼® °á°ú Á¡¼ºÅäÀÇź-Á¡¼Ò¼º ¸ðµ¨°ú Á¡Åº-Á¡¼Ò¼º ¸ðµ¨·Î °è»êµÈ °¡¼Óµµ ±â·ÏÀº Æ÷Æ®¾ÆÀÏ·£µå¿¡¼­ °èÃøµÈ °¡¼Óµµ ±â·Ï°ú °ÅÀÇ ÀÏÄ¡ÇÔÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, Á¡¼ºÅä Áö¹Ý ºÎ±Ù¿¡¼­ Á¡Åº-Á¡¼Ò¼º ¸ðµ¨°ú ź-Á¡¼Ò¼º ¸ðµ¨Àº ¹Ì¼¼ÇÏ°Ô ´Ù¸¥ °Åµ¿ Ư¼ºÀ» ³ªÅ¸³»¾î Á¡¼Ò¼º ¸ðµ¨ÀÇ Å¸´ç¼ºÀ» È®ÀÎÇÏ¿´´Ù. µû¶ó¼­ µ¿Àû Á¡Åº-Á¡¼Ò¼º ±¸¼º¸ðµ¨Àº ´ëº¯Çü·ü ¿µ¿ª¿¡¼­ Á¡¼ºÅäÀÇ ¼Ò¼ºº¯ÇüÀ» À¯¹ßÇÏ´Â ´ëÇü ÁöÁø µîÀÇ ¹ß»ý½Ã Á¡¼ºÅäÀÇ ÁõÆø ¹× °¨¼èƯ¼ºÀÇ ÆÄ¾ÇÀ» À§ÇØ Àû¿ë°¡´ÉÇÑ ¸ðµ¨ÀÓÀÌ ÀÔÁõµÇ¾ú´Ù.
In the present study, in order to apply a cyclic viscoelastic-viscoplastic constitutive model to multi-layered ground conditions during large earthquake, the numerical simulations of the 1995 Hyogoken Nanbu Earthquake at Port Island, Kobe, Japan, were performed by the seismic response analysis. From the seismic response analysis, it was found that the acceleration calculated from the cyclic elasto-viscoplastic model and cyclic viscoelastic-viscoplastic models for clay was in close agreement with the recorded accelerations at the Port Island down-hole array, and the cyclic elastic-viscoplastic and viscoelastic-viscoplastic constitutive models showed little different behavior characteristics near clay layer. Thus, the propriety of viscoplastic model for clay was convinced. Therefore, it can be concluded that a cyclic viscoelastic-viscoplastic constitutive model can give a good description of the amplification and also it showed accurate damping characteristics of clay during large event which induces plastic deformation in large strain range.
 
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Coupled analysis;Constitutive model;FEM;Reclaimed ground;Seismic response;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.55-64
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921341931)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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