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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.2, 2004³â, pp.125-130
¿¬¼Óź¼Ò¼º ĸ ¸ðµ¨ÀÇ Á¤¼ö »êÁ¤
( Parameter Evaluation of a Smooth Elasto-plastic Cap Model )
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º» ³í¹®¿¡¼­´Â ¼öÄ¡Àû ±¸¼º¹æÁ¤½ÄÀÎ ¿¬¼Ó ź¼Ò¼º ĸ ¸ðµ¨ÀÇ Á¤¼öÃßÁ¤¿¡ °üÇÑ ¹æ¹ýÀÌ Á¦½ÃµÇ¾ú´Ù. ĸ ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ½ÇÁ¦ ÅäÁúÀÇ °Åµ¿À» ¿¹ÃøÇϱâ À§ÇÏ¿©¼­´Â ĸ ¸ðµ¨À» ÀÌ·ç´Â ÅäÁúÀÇ ¹°¼º°ú Á÷Á¢ÀûÀ¸·Î ¿¬°üµÈ ¿©´ü°³ÀÇ Á¤¼ö°¡ °áÁ¤µÇ¾î¾ß ÇÑ´Ù. À̸¦ À§ÇÏ¿© ù ¹øÂ°·Î, Ottawa ¸ð·¡¸¦ »ç¿ëÇÏ¿© Ç¥ÁؾйнÃÇè±â¸¦ ÀÌ¿ëÇÑ ÀÏÃà¾ÐÃà½ÃÇè ¹× ¹è¼ö»ïÃà¾ÐÃø ½ÃÇèÀÌ ÅäÁú°Åµ¿ÀÇ ½ÇÁ¦±âÁذªÀ¸·Î¼­ ¼öÇàµÇ¾ú°í, µÎ ¹øÂ°·Î ź¼Ò¼º ĸ ¼öÄ¡ÇØ¼®¸ðµ¨ÀÇ ¹ÝÀÀÀ» ½Ç³»½ÇÇè°ª¿¡ ÀÏÄ¡½Ã۱â À§ÇÏ¿© ÃßÁ¤µÈ Á¤¼öµéÀ» »ç¿ëÇÑ ¼öÄ¡½ÇÇèÀÌ ¼öÇàµÇ¾ú´Ù. µÎ ½ÇÇè °£ÀÇ ¿ÀÂ÷¸¦ ÃÖ¼ÒÈ­Çϱâ À§ÇÏ¿© ÃÖÀûÈ­ ±â¹ýÀÌ »ç¿ëµÇ¾úÀ¸¸ç, ÃÖÀûÈ­ ÈÄ °áÁ¤µÈ 8°³ÀÇ Á¤¼ö´Â ½Ç³»½ÇÇè°á°ú¿Í ºñ±³µÇ¾ú´Ù. ƯÈ÷, ¼öÄ¡Àû »ïÃà¾ÐÃà½ÃÇè½Ã ÀÀ·Â°è»ê¿¡ µû¸¥ ¼öÆòº¯À§ ÃøÁ¤¿¡ Ưº°ÇÑ ÁÖÀǰ¡ ÇÊ¿äÇÏ´Ù.
In this paper, the method of parameter estimation of a mathematical constitutive model blown as the smooth elasto-plastic cap model is studied. To predict the response of the real soil using this model, the eight parameters describing the constitutive equations have to be determined. First, experimental data are obtained from simple laboratory experiments such as one dimensional confined compression test in a consolidometer and drained triaxial compression test with the Ottawa sand f3r the reference value. Then, the numerical experiments are performed in the cap model with initial guessed parameters. The optimization method is utilized to fit the model response to experimental data by minimizing the error between the laboratory and numerical responses. Special attention is given to the parameter estimation procedure of numerical triaxial test due to the difficulty of the lateral strain measurements.
 
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Cap models;Elasto-plasticity;Optimization;Parameter estimation;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.2, 2004³â, pp.125-130
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922321629)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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