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Çѱ¹Áö¹Ý°øÇÐȸ / v.12, no.2, 1996³â, pp.19-32
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ÁöÁø ±â·ÏÀÇ È®´ë(Scaling) ±â¹ý°ú ¾Ð·ÂÅä¿À ¸»¶Ò¸ðÇü½ÇÇè¿¡ÀÇ Àû¿ë
( Scaling Technique of Earthquake Record and its Application to Pile Load Test for Model Driven into Pressure Chamber ) |
| ÃÖ¿ë±Ô; Á¤È¸¿ø, °æ¼º´ëÇб³ Åä¸ñ°øÇаú;
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| ½Ã°£¿µ¿ªÀÇ ÁöÁø °¡¼Óµµ-½Ã°£ ÀÌ·ÂÀ» Á֯ļö ¿µ¿ªÀÇ courier ÁøÆø-Á֯ļö ÀÌ·ÂÀ¸·Î º¯È½ÃŰ´Â TrifunacÀÇ °æÇèÀû ¸ðµ¨À» ±âÃÊ·Î ÇÏ¿© ÁöÁø °üÃø¼Ò¿¡¼ ÃøÁ¤µÈ ÀÓÀÇ ±Ô¸ðÀÇ ½ÇÁ¦ ÁöÁø±â·ÏµéÀ» ÇÊ¿äÇÑ ±Ô¸ðÀÇ ÁöÁø±â·ÏÀ¸·Î À¯»çȽÃŰ´Â ÁöÁø È®´ë (scaling) ±â¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. ¶ÇÇÑ, ÁöÁø ±Ô¸ð(M) 5.6ÀÇ ÁöÁø±â·ÏÀ» ÀÌ¿ëÇÏ¿© ÁöÁø ±Ô¸ð(M) 8.0ÀÇ À¯»çÁöÁøÀ» ÀÛ¼ºÇÏ¿© µ¿Àû ÀçÇÏ ½ÃÇè ÀåÄ¡¿¡ Àû¿ë°¡´ÉÇϵµ·Ï ÇÏ¿´´Ù. ÁöÁø È®´ë (scaling) ±â¹ýÀº MMI(modified mercalli intensity), ÁöÁø±â·Ï ºÎÁöÀÇ Á¶°Ç,Áø¾Ó°Å¸®,ÁöÁø °¡¼Óµµ ¼ººÐÀÇ ¹æÇâ, ÇØ¼®ÀÇ ½Å·Úµµ µîÀ» °í·ÁÇÒ ¼ö ÀÖÀ¸¸ç, ´Ù¾çÇÑ ÁöÁø ±â·Ïµé¿¡ Àû¿ë°¡´ÉÇÏ¿´´Ù.À¯»çÁöÁøÀº ¼öÆò¹æÇâÀÇ ¼ººÐµé¸¸À» °í·ÁÇÏ¿© ÀÛ¼ºµÇ¾ú´Ù. ¾Ð·ÂÅäÁ¶³»¿¡ ¼³Ä¡µÈ ¸ðÇüÀÎÀ帻¶Ò°ú °³´Ü¾ÐÃ⸻¶Ò¿¡ ´ëÇÑ À¯»çÁöÁø Áøµ¿¿¡ ÀÇÇÑ µ¿Àû ¸»¶ÒÀçÇϽÃÇèÀÌ °¡´ÉÇÏ¿´´Ù. Á¤Àû ¸»¶ÒÀçÇϽÃÇè½Ã ÀÎÀ帻¶Ò°ú ¾ÐÃ฻¶ÒÀÇ °Åµ¿Àº ¸Å¿ì »óÀÌÇÏ¿´´Âµ¥, ÀÎÀ帻¶ÒÀº 2~3ȸÀÇ ±ÞÀÛ½º·± ¹Ì²ô·¯Áü º¯À§¸¦ ¼ö¹ÝÇÏ¿´´Ù. ¶ÇÇÑ, À¯»ç ÁöÁø Áøµ¿Áß ÀÎÀ帻¶Ò°ú °³´Ü¾ÐÃ฻¶ÒÀÇ °Åµ¿Æ¯¼ºÀº ¸Å¿ì »óÀÌÇÏ¿´À¸¸ç, ÁöÁö·Â °¨¼ÒƯ¼ºµµ Å©°Ô ´Þ¶ú´Ù. |
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| Based on Trifuilac's empirical model to transform earthquake acceleration time history in the time domain into Fourier amplitude spectrum in the frequency domail an earthquake scaling technique for simulating the earthquake record of certain magnitude as the required magnitude earthquake was suggested. Also, using the earthquake record of magni dude(M) 5.8, the simulated earthquake of magnitude(M) 8.0 was established and its application to dynamic testing system was proposed. The earthquake scaling technique could be considered by several terms : earthquake magnitude(M), earthquake intensity(MMI), epicentral distance, recording site conditions, component direction and confidence level required by the analysis. Albo, it had an application to the various earthquake records. The simulated earthquake in this study was established by two orthogonal horizontal components of earthquake acceleration-time history. The simulated earthquake shaking could be applied to the dynamic pile load test for the model tension pile and the model compressive open -ended piles driven into the pressure chamber. In the static pile load test, behavior of two piles was very different and after model tension pile experienced 2 or 3 successive slips of the pile relative to the soil, it was failed completely. During the simulated earthquake shaking, dynamic behavior and pile capacity degradation of two piles were very different. |
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| Ű¿öµå |
| Earthquake Scaling Technique;Simulated Earthquake;Frequency Domain;Dynamic Similitude;Pressure Chamber Test; |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.12, no.2, 1996³â, pp.19-32
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920446407)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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