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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.3, 2006³â, pp.23-35
ÇÏÁßÀÇ Á֯ļö¿¡ ÀÇÇÏ¿© Áö¹è¹ÞÀº ÈëÀÇ µ¿Àû °Åµ¿ÀÌ ºÎÁöÁõÆøÇö»ó¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effect of Loading Frequency Dependent Soil Behavior on Seismic Site Effect )
¹ÚµÎÈñ;ÇÏ»þ½Ã À¯¼¼ÇÁ;ÀÌÇö¿ì;±èÀ翬; ;;;;
 
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µî°¡¼±ÇüÇØ¼®Àº Áö¹ÝÁõÆøÇö»óÀ» ¸ð»çÇϱâ À§ÇÏ¿© ³Î¸® »ç¿ëµÇ°í ÀÖÀ¸¸ç, ÇØ¼® ½Ã ÈëÀÇ °Åµ¿Àº ÇÏÁßÀÇ Á֯ļöÀÇ ¿µÇâÀ» ¹ÞÁö ¾Ê´Â´Ù°í °¡Á¤µÇ¾î¿Ô´Ù. ¹Ý¸é, ½Ç³»½ÃÇèÀº Á¡¼ºÅäÀÇ °æ¿ì ÇÏÁßÀÇ Á֯ļöÀÇ ¿µÇâÀ» Å©°Ô ¹Þ´Â´Ù´Â °ÍÀ» º¸¿©ÁÖ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ÇÏÁßÀÇ Á֯ļö°¡ ÈëÀÇ µ¿Àû °Åµ¿¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» °í·ÁÇÏ´Â »õ·Î¿î µî°¡¼±ÇüÇØ¼®±â¹ýÀÌ °³¹ßµÇ¾úÀ¸¸ç Á֯ļöÀÇ ¿µÇâÀ» ±Ô¸íÇϱâ À§ÇÏ¿© Áö¹ÝÀÀ´äÇØ¼®À» ¼öÇàÇÏ¿´´Ù. ÇØ¼® °á°ú, ÇÏÁßÀÇ Á֯ļö¿¡ µû¶ó¼­ º¯È­ÇÏ´Â Àü´Üź¼º°è¼ö°¡ Áö¹ÝÀÀ´ä¿¡ ¹ÌÄ¡´Â ¿µÇâÀº ÀÛÀº ¹Ý¸é °¨¼èºñ´Â Å« ¿µÇâÀ» ³¢Ä¡´Â °ÍÀ¸·Î ÆÇ¸íµÇ¾ú´Ù. ÀÌ´Â ÇÏÁßÀÇ Á֯ļö°¡ ³ô¾ÆÁú¼ö·Ï ÈëÀÇ °¨¼èºñµµ °°ÀÌ Áõ°¡Çϸç ÀÌ·Î ÀÎÇÏ¿© ÁöÁøÆÄÀÇ °íÁ֯ļö ¿ä¼Ò°¡ ÇÊÅ͸µ µÇ±â ¶§¹®ÀÌ´Ù. µû¶ó¼­, ÇÏÁßÀÇ Á֯ļö¿¡ Áö¹è ¹Þ´Â ÈëÀÇ °Åµ¿Àº ƯÈ÷ °íÁ֯ļö ¿ä¼Ò°¡ dzºÎÇÑ ÁöÁøÆÄ ÀüÆÄ ¸ð»ç ½Ã ƯÈ÷ Áß¿äÇÏ´Ù°í ÆÇ´ÜµÈ´Ù.
Equivalent linear analysis is widely used in estimating local seismic site effects. The soil behavior in the analysis is often assumed to be rate-independent and is not influenced by the seismic loading frequency. Laboratory results, however, indicate that cohesive soil behavior is greatly influenced by the loading frequency. A new equivalent linear analysis method that accounts for the loading frequency dependent soil behavior is developed and used to perform a series of one dimensional site response analyses. Results indicate that while frequency dependent shear modulus has limited influence on computed site response, frequency dependent soil damping greatly filters out high frequency components of the ground motion and thus results in lower response.
 
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Damping;Equivalent linear;Loading frequency;Shear modulus;Site response analysis;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.3, 2006³â, pp.23-35
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200622219289127)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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