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Çѱ¹Áö¹Ý°øÇÐȸ / v.13, no.4, 1997³â, pp.95-108
ÇÇ¿¡Á¶ ÄÜ ½ÃÇèÀ» ÀÌ¿ëÁ¤È¸¿ø, Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú ºÎ±³¼ö, Á¤È¸¿ø, Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú ¹Ú»ç ÈÄ °úÁ¤ÇÑ ¸ÁÀϰè¼ö °áÁ¤½Ã ÃÖÀûÈ­ ±â¹ýÀÇ Àû¿ë
( Application of Optimum Design Technique in Determining the Coefficient of Consolidation Using Piezocone Test )
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ÇÇ¿¡Á¶ ÄÜÀÇ ¼Ò»ê½ÃÇèÀ» ÀÌ¿ëÇÑ Á¤±Ô ¾Ð¹Ð Áö¹ÝÀÇ ¾Ð¹Ð°è¼ö ÃßÁ¤Àº ±×°£ ¸¹Àº ¿¬±¸Àڵ鿡 ÀÇÇÏ¿© ¿¬±¸µÇ¾î ¿ÔÀ¸³ª °¢ ¿¬±¸ÀÚµéÀÇ °¡Á¤ »çÇ×°ú ÇØ¼® ¹æ¹ý¿¡ µû¶ó ƯÁ¤ÇÑ ¾Ð¹Ðµµ¿¡ ´ëÇØ¼­µµ ¸Å¿ì ³ÐÀº ¹üÀ§ÀÇ ÀÌ·ÐÀûÀÎ ÇØµéÀÌ Á¦½ÃµÇ¾î ¿Ô´Ù. º» ¿¬±¸¿¡¼­´Â º¸´Ù Çö½ÇÀûÀ̸鼭 Àü ¹üÀ§ÀÇ ¾Ð¹Ðµµ¿¡ °ÉÃļ­ Àϰü¼º ÀÖ´Â ¾Ð¹Ð°è¼ö¸¦ ±¸ÇÒ ¼ö ÀÖµµ·Ï ÃÖÀûÈ­ ±â¹ýÀ» Àû¿ëÇÏ¿´´Ù. ÄÜ °üÀÔÈ¿°ú¸¦ °í·ÁÇϱâ À§ÇØ ¿¬¼ÓÀûÀÎ ±¸Çü °øµ¿È®ÀåÀ» Àû¿ëÇϹǷνá ÀÌ·ÐÀûÀ¸·Î ¾ò¾îÁö´Â °£±Ø¼ö¾ÐÀÇ ºÐÆ÷¿Í °üÀÔ °£±Ø¼ö¾ÐÀ¸·ÎºÎÅÍ Ãʱ⠰úÀ×°£±Ø¼ö¾ÐÀÇ ºÐÆ÷¸¦ °áÁ¤ÇÏ¿´À¸¸ç Ãà´ëĪ ¼±ÇüºñÈ¥ÇÕ ¾Ð¹ÐÀÌ·ÐÀ» »ç¿ëÇÏ¿© À¯¹ßµÈ °úÀ×°£±Ø¼ö¾ÐÀÇ ¼Ò»êÈ¿°ú¸¦ ¸ð»çÇÏ¿´´Ù. ÀÌ¿Í °°ÀÌ °è»êµÈ ¼Ò»ê°î ¼±°ú ½ÇÁ¦ °èÃøµÈ ¼Ò»ê°î¼±ÀÇ Â÷À̸¦ ÃÖ¼ÒÈ­½Ã۱â À§ÇÏ¿© ºñ±¸¼Ó ÃÖÀûÈ­ ¾Ë°í¸®µëÀÎ BFGS°¡ »ç¿ëµÇ¾ú°í golden section ÀÏÂ÷¿ø Ž»ö¹ýÀÌ »ç¿ëµÇ¾ú´Ù. °ËÁõ ¿¹Á¦¸¦ ÅëÇÏ¿© Àû¿ëµÈ ÃÖÀûÈ­ ±â¹ýÀÇ ¾ÈÁ¤µÈ ¼ö·Å¼ºÀ» È®ÀÎÇÏ¿´°í ½ÇÁ¦ ¿¹Á¦¿¡ Àû¿ëÇÔÀ¸·Î½á Á¦¾ÈµÈ ¹æ¹ýÀÌ ³ÐÀº ¹üÀ§ÀÇ ¾Ð¹Ðµµ ¹üÀ§¿¡¼­ °èÃøµÈ ¼Ò»ê°î¼±°ú Àß ÀÏÄ¡ÇÏ´Â ¾Ð¹Ð°è¼ö¸¦ »êÁ¤ÇÔÀ¸·Î½á ¸Å¿ì È¿°úÀûÀÓÀ» È®ÀÎ ÇÒ ¼ö ÀÖ¾ú´Ù.
For normally consolidated clay, several researchers have developed a number of theoretical time factors to determine the coefficient of consolidation However, depending on the assumptions and analytical techniques, it could considerably vary even for a specific degree of consolidation. In this paper, a method is proposed to determine a consistent coefficient of consolidation over all ranges of degree of consolidation by applying the concept of the Optimum Design Technique. The initial excess pore pressure distribution is assumed to be obtainable by the successive spherical cavity expansion theory. The dissipation of pore pressure is simulated by means of two dimensional linear-uncoupled axisymmetric consolidation analysis. The minimization of the differences between the measured and the predicted excess pore pressures was carried by BFGS unconstrained optimum design algorithm with one dimensional golden section search technique. By analyzing numerical and real field examples, it can be found that the adopted optimum technique gives a consistent and convergent results.
 
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Piezocone;Dissipation test;Coefficient of consolidation;Optimization Technique;BFGS;Golden section search;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.13, no.4, 1997³â, pp.95-108
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920447519)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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