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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.8, 2008³â, pp.35-41
Ãþ ºÐÇÒµÈ ¿¬¼ºÀü´Ü»óÀÚÀÇ °æ°èÈ¿°ú¿¡ °üÇÑ ¼öÄ¡ÇØ¼®Àû ºÐ¼®
( Numerical Evaluation of Boundary Effects in the Laminar Shear Box System )
±èÁø¸¸;·ùÁ¤È£; ºÎ»ê´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкΠÅä¸ñ°øÇÐ;ºÎ»ê´ëÇб³ Åä¸ñ°øÇаú;
 
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1-g Áøµ¿´ë ¶Ç´Â Áö¿À¼¾Æ®¸®Ç»Áö¸¦ »ç¿ëÇÑ Áö¹ÝÁöÁø¸ð»ç¿¡ ´ëÇÑ µ¿Àû¸ðÇü½ÇÇèÀ» ¼öÇàÇÒ ¶§ Ãþ ºÐÇÒµÈ ¿¬¼ºÀü´Ü»óÀÚ°¡ ÀÚÁÖ ÀÌ¿ëµÇ°í ÀÖ´Ù. º» ¿¬±¸´Â 3Â÷¿ø ¼öÄ¡ÇØ¼®±â¹ýÀ» ÀÌ¿ëÇÏ¿© ÀÚÀ¯Àå, °­¼ºÅäÁ¶¿Í Ãþ ºÐÇÒµÈ ¿¬¼ºÀü´Ü»óÀÚ³» ¸ðÇüÁö¹ÝÀ» °¢°¢ ¸ðµ¨¸µÇÏ°í °Åµ¿À» ºñ±³ ºÐ¼®ÇÏ¿´´Ù. ºÐ¼®°á°ú °­¼ºÅäÁ¶ÀÇ °Åµ¿°ú ÀÚÀ¯ÀåÀÇ ±×°ÍÀº »ó´çÇÑ Â÷À̸¦ º¸ÀÌ´Â ¹Ý¸é¿¡ Ãþ ºÐÇÒµÈ ¿¬¼ºÀü´Ü»óÀÚÀÇ °Åµ¿Àº ÀÚÀ¯Àå°ú À¯»çÇÑ °Åµ¿À» ÇÏ¿´´Ù. ±×·¯³ª Ãþ ºÐÇÒµÈ ¿¬¼ºÀü´Ü»óÀÚ´Â ÀÚÀ¯Àå¿¡ ºñÇØ °¡¼Óµµ°¡ °ú¼ÒÆò°¡µÇ´Â °æÇâÀ» º¸¿´°í, ƯÈ÷ ¸ðÇü Á߽ɺο¡¼­ °¡ÀåÀÚ¸®·Î °¥¼ö·Ï ÀÚÀ¯ÀåÀÇ °Í°ú Å« Â÷À̸¦ º¸¿´´Ù. ¶ÇÇÑ Ãþ ºÐÇÒµÈ ¿¬¼ºÀü´Ü»óÀÚ´Â ÀÚÀ¯Àå¿¡ ºñÇØ ÀåÁÖ±â Æ¯¼ºÀ» °¡Áø °Åµ¿À» ÇÏ¿© Áö¹Ý°¡¼Óµµ°¡ ÀÚÀ¯ÀåÀÇ ±×°Íº¸´Ù °¨¼ÒÇÏ´Â °æÇâÀ» º¸À̴µ¥, ÀÌ´Â Ãþ ºÐÇÒµÈ ¿¬¼ºÀü´Ü»óÀÚ¿¡¼­ ÁÖº¯Áö¹ÝÀÇ °­¼º°ú °ü¼ºÈ¿°ú°¡ Á¦´ë·Î ¹Ý¿µµÇÁö ¸øÇØ ¹ß»ýÇÏ´Â Çö»óÀ¸·Î ÆÇ´ÜµÈ´Ù.
Laminar-shear-boxes are widely used to simulate free-field seismic ground response by using a l-g shaking table or geo centrifuge in geotechnical earthquake engineering. This study numerically modeled and compared the ground responses in the free field, rigid box, and laminar shear box by using a 3-D FEM program. It is found from the numerical simulations that the laminar shear box can simulate the free field ground movement more precisely than the rigid box. However, the laminar shear box underestimated the surface acceleration of the free field ground. It also showed low-frequency characteristics probably because the stiffness and inertia effect of surrounding ground are neglected.
 
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Boundary effect;Geo-centrifuge;Ground movement;Laminar shear box;Numerical modeling;Shaking table;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.8, 2008³â, pp.35-41
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200800557078748)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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