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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.6, 1999³â, pp.45-55
ÆÄ¶ûÀ¸·Î ÀÎÇÑ ºÒÆ÷È­µÈ ´ÙÃþ ÇØÀúÁö¹ÝÀÇ °Åµ¿;ÁØÇؼ®Àû ¹æ¹ý
( Wave-Induced Response of Unsaturated and Multi-layered Seabed; A Semi-analytical Method )
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ÆÄ¶û¿¡ ÀÇÇÑ ºÒÆ÷È­µÈ ÇØÀúÁö¹ÝÀÇ °Åµ¿, ¾×»óÈ­¿Í Àü´ÜÆÄ±«¿¡ ´ëÇÑ ¿¬±¸ÀÌ´Ù. ºÒÆ÷È­µÈ Áö¹ÝÀº À¯Ã¼°¡ ä¿öÁø ´Ù°ø¼º ź¼ºÃ¼·Î ¸ðµ¨È­ ÇÏ¿´´Ù. À¯Ã¼ÀÇ È帧°ú Å丳ÀÚÀÇ º¯ÇüÀº BiotÀÇ À̷п¡ µû¸¥ Áö¹è¹æÁ¤½ÄÀ¸·Î ³ªÅ¸³»¾ú´Ù. ÀÌ ¹æÁ¤½ÄÀº ÁØÇؼ®Àû ¹æ¹ýÀ¸·Î Ç®¾î ºÒÆ÷È­µÈ ´ÙÃþÀÇ Áö¹Ý¿¡ ´ëÇÏ¿© ÀÀ·Â°ú °£±Ø¼ö¾ÐÀ» Æò°¡ÇÏ¿´´Ù ÁØÇؼ®Àû ¹æ¹ýÀº ±âÁ¸ÀÇ ÇØ¼®¹æ¹ý°ú ´Þ¸® ´ÙÃþÀÇ À̹漺 Áö¹ÝÀ» ¿¬¼ÓÀûÀ¸·Î ÇØ¼®ÇÒ ¼ö ÀÖ´Ù. ÇØ¼®°á°ú¿¡ ÀÇÇϸé, Áö¹ÝÀÇ Æ÷È­µµ´Â ºÒÆ÷È­µÈ ´ÙÃþÀÇ Áö¹Ý¿¡¼­ ÀÀ·Â°ú °£±Ø¼ö¾ÐÀÇ Å©±â¿¡ °¡Àå Å« ¿µÇâÀ» ¹ÌÄ¡°í ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ, ÇØ¼®°á°ú¸¦ Åä´ë·Î Áö¹ÝÀÇ ¾×»óÈ­ ¹ß»ý°ú Àü´ÜÆÄ±«¿¡ ´ëÇÑ °ËÅ並 ½Ç½ÃÇÏ¿´À¸¸ç, ±× °á°ú ÃÖ´ë Àü´ÜÆÄ±«°¡ ¹ß»ýµÈ ±íÀ̰¡ ÃÖ´ë ¾×»óÈ­ ¹ß»ýÁö¿ª º¸´Ù ±íÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Wave-induced response, liquefaction and stability of unsaturated seabed are studied. The unsaturated seabed is modeled as a fluid-filled polo-elastic medium. The coupled process of fluid flow and the deformation of soil skeleton is formulated in the framework of Biot's theory. The resulting governing equations are solved using a semi-analytical method to evaluate the stresses and pore water pressure of unsaturated and multi-layered seabed. The semi-analytical method can be applied to calculate a pore pressure and the stresses of in anisotropic inhomogeneous seabed. The results indicate that the degree of saturation influences mostly on the magnitudes of a pore pressure and the stresses of unsaturated and multi-layed seabed. Based on the pore pressure and stresses in seabed, the analysis on the possibilities of liquefaction and shear failure was performed. The results show that the maximum depth of shear failure occurrence is deeper than the maximum liquefaction depth.
 
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Wave-induced stress;Seabed response;Liquefaction;Instability;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.6, 1999³â, pp.45-55
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749744)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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