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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.8, 2008³â, pp.137-148
ÁßÁøÁö¿ª¿¡¼­ ÄÉÀ̽¼ ¾Èº®ÀÇ µ¿Àû¼öÆòº¯À§ Ư¼º¿¡ °üÇÑ ¿¬±¸
( A Study on the Dynamic Lateral Displacements of Caisson Quay Walls in Moderate Earthquake Regions )
¹Ú±Ùº¸;½ÉÀç¿í;Â÷½ÂÈÆ;±è¼öÀÏ; ¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;ÄÚ¿À·Õ°Ç¼³(ÁÖ) ±â¼ú¿¬±¸¼Ò Åä¸ñ¿¬±¸ÆÀ;½Ö¿ë°Ç¼³ Åä¸ñ±â¼úºÎ;¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкÎ;
 
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º» ¿¬±¸¿¡¼­´Â ±¹³» Ç׸¸ ¹× ¾îÇ׽ü³ÀÇ ³»Áø¼³°èÇ¥Áؼ­¿¡¼­ ¼³°è ¿¹·Î ÀÌ¿ëÇÑ ÁöÁøÆÄ¸¦ Æ÷ÇÔÇÏ¿© ÁöÁø±Ô¸ð $5.3{sim}7.9$ ¼öÁØÀÇ 28°³ÀÇ ÁöÁø±â·Ï¿¡ ´ëÇÑ ¿¡³ÊÁö¿Í ½ºÆåÆ®·³ ºÐ¼®À» ÅëÇÑ ±¹³» ÀûÇÕ¼º ¿©ºÎ¸¦ Æò°¡ÇÏ¿´°í, À̸¦ ÅëÇØ ±¹³» ³»Áø¼³°è¿¡ Àû¿ë °¡´ÉÇÑ ÀÔ·ÂÁöÁø±â·ÏÀ» Á¦¾ÈÇÏ¿´´Ù. ±×¸®°í Á¦¾ÈµÈ ÁöÁø±â·ÏÀ» ÀÌ¿ëÇÏ¿© ÄÉÀ̽¼ÀÇ Çü»ó ¹× ÇϺÎÁö¹Ý »óÅ¿¡ µû¸¥ ÄÉÀ̽¼ ¾Èº®ÀÇ µ¿Àû ¼öÆòº¯À§Æ¯¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ¿¬±¸ °á°ú ÁöÁøÆÄ°¡ º¸À¯Çϰí ÀÖ´Â ¿¡³ÊÁö¿Í °¡¼Óµµ ½ºÆåÆ®·³ÀÇ Å©±â´Â ÁöÁø±Ô¸ð°¡ Ä¿Áú¼ö·Ï Áõ°¡ÇÏ¿´´Ù. ƯÈ÷, ÁöÁø±Ô¸ð 7.5 ºÎ±ÙÀÇ ÁöÁø±â·ÏÀº ³»Áø¼³°è±âÁØ¿¡ ±ÔÁ¤µÈ Ç¥Áؼ³°èÀÀ´ä½ºÆåÆ®·³¿¡¼­ Å©°Ô ¹þ¾î³­ ¹Ý¸é, ÁöÁø±Ô¸ð 6.5 ºÎ±ÙÀÇ 4°³ÀÇ ÁöÁø±â·ÏÀº ±¹³» ³»Áø¼³°è±âÁØ¿¡ ±ÔÁ¤µÈ Ç¥Áؼ³°èÀÀ´ä½ºÆåÆ®·³À» °ÅÀÇ ¸¸Á·ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ±×¸®°í, ÀÔ·ÂÁöÁø¿¡ µû¸¥ ÄÉÀ̽¼ ¾Èº®ÀÇ µ¿Àû ¼öÆòº¯À§Æ¯¼º ºÐ¼® °á°ú ±¹³» Ç׸¸ ¹× ¾îÇ׽ü³ÀÇ ³»Áø¼³°è Ç¥Áؼ­ÀÇ ¿¹Á¦·Î Á¦½ÃÇÑ ÁöÁø±Ô¸ð 7.4 ÀÌ»óÀÇ ÁöÁøÆÄÀÇ ¼öÆòº¯À§´Â ±¹³»ÀÇ ³»Áø¼³°è±âÁØ¿¡¼­ Á¦½ÃÇÑ Ç¥Áؼ³°èÀÀ´ä½ºÆåÆ®·³À» ´ëüÀûÀ¸·Î ¸¸Á·ÇÏ´Â ÁöÁø±Ô¸ð 6.5 ¼öÁØÀÇ ÁöÁøÆÄÀÇ ¼öÆòº¯À§º¸´Ù 2¹è ÀÌ»ó Å©°Ô ³ªÅ¸³µ´Ù. ÀÌ·¯ÇÑ °á°ú·ÎºÎÅÍ ÁöÁø±Ô¸ð 7.4 ÀÌ»óÀÇ ÁöÁøÆÄ¸¦ ÀÌ¿ëÇÑ ³»Áø¼³°è´Â ÁöÁø·ÂÀ» °ú´ÙÇÏ°Ô »êÁ¤ÇÏ¿© ºñ°æÁ¦ÀûÀÎ ¼³°è¸¦ ÇÒ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ±¹³» ÀûÇÕ¼º Æò°¡·ÎºÎÅÍ ±¸ÇÑ4°³ÀÇ ÁöÁø±â·ÏÀ» ÀÔ·ÂÇÏÁßÀ¸·ÎÇÑ µ¿Çؼ® °á°ú¿¡ ´ëÇÑ Á¤·®ÀûÀÎ ºÐ¼®À» ÅëÇØ ÄÉÀ̽¼ÀÇ Çü»ó°ú ÇϺÎÁö¹Ý ±íÀÌ ¹× Áö¹ÝÀÇ Ç¥ÁذüÀÔÀúÇ×Ä¡¸¦ ÀÌ¿ëÇÏ¿© °£ÆíÇÏ°Ô ÄÉÀ̽¼ ¾Èº®ÀÇ ÁöÁø½Ã ¼öÆòº¯À§¸¦ »êÁ¤ÇÒ ¼ö ÀÖ´Â °£ÆíµµÇ¥¸¦ Á¦¾ÈÇÏ¿´´Ù.
In this study, 28 earthquake records with magnitudes from 5.3 to 7.9 are selected for dynamic analysis in order to assess applicability of the earthquakes for domestic seismic design. The assessment is performed using the seismic spectrum analysis of energy and acceleration. Based on results of the analysis, four acceleration time histories, which satisfy the Korean design standard response spectrum, are proposed. From the dynamic analysis using earthquake magnitudes from 6.4 to 7.9, it is found that horizontal displacements corresponding to earthquake magnitudes greater than 7 are two times larger than those with magnitude 6.5. Therefore, it can be stated that use of strong earthquakes, such as Miyagiken-ken-oki earthquake (Ofunato, $M_{JMA}=7.4$) and Tokachi-oki earthquake (Hachinohe, $M_{JMA}=7.9$), for the seismic design in Korea is not applicable, and may prove to be excessively conservative due to overestimated seismic force. From the dynamic analyses using the proposed acceleration time histories, effects of caisson quay wall dimension and the subsoil condition are investigated as well. The simplified design charts to evaluate horizontal displacements of caisson quay wall are also proposed based on earthquake magnitude 6.5 that is appropriate in Korea.
 
Ű¿öµå
Energy;Lateral displacement;Seismic magnitude;Standard design response spectrum;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.8, 2008³â, pp.137-148
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200800557078827)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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