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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.3, 2008³â, pp.35-51
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¾×»óÈ ÇØ¼®À» À§ÇÑ ¼öÁ¤±³¶õ»óŰ³³ä ¸ðµ¨ °³¹ß
( Development of Modified Disturbed State Concept Model for Liquefaction Analysis ) |
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| º» ³í¹®¿¡¼´Â ¾×»óÈ ÇØ¼®¿¡ °üÇÑ DSC ¸ðµ¨À» ½ÇÇè ¹× ÇØ¼®Àû °üÁ¡¿¡¼ ±× Àû¿ë¼ºÀ» Æò°¡ÇÏ¿´´Ù. Æ÷È »çÁúÅäÀÇ µ¿Àû°Åµ¿À» º¸´Ù Á¤È®È÷ ¿¹ÃøÇϱâ À§ÇØ DSC ¸ðµ¨À» À¯È¿ÀÀ·Â °æ·Î¿Í °úÀ×°£±Ø¼ö¾Ð ¹ßÇö¿¡ ±âÃÊÇÏ¿© ¼öÁ¤ÇÏ¿´´Ù. ¾×»óÈ¿¡ ´ëÇÑ µ¿Àû°Åµ¿ ¹× DSC ¸ðµ¨¿¡ ´ëÇÑ ¸Å°³º¯¼ö »êÁ¤À» À§ÇØ Á¤Àû¹è¼ö»ïÃà½ÃÇè°ú ¹Ýº¹ ºñ¹è¼ö»ïÃà½ÃÇèÀ» »ó´ë¹Ðµµ¿Í ±¸¼ÓÀÀ·Â¿¡ µû¶ó ¼öÇàÇÏ¿´´Ù. À¯È¿ÀÀ·Â °æ·Î¿Í °úÀ×°£±Ø¼ö¾ÐÀÇ Ç×À¸·Î ¾×»óÈ »óŸ¦ ºÐ·ùÇÏ°í ¼öÁ¤µÈ DSC ¸ðµ¨À» Àû¿ë½ÃÄÑ ¾×»óÈ ÇØ¼®À» ¼öÇàÇÏ¿´´Ù. Á¦¾ÈµÈ ¹æ¹ýÀ» Åä´ë·Î DSC ¸ðµ¨°ú Á¦¾ÈµÈ DSC ¸ðµ¨¿¡ ´ëÇÑ ¾×»óÈ ÇØ¼®À» »ó´ë¹Ðµµ¿Í ±¸¼ÓÀÀ·Â¿¡ µû¶ó ºñ±³ÇÏ¿´´Ù. ºñ±³ °á°ú ¼öÁ¤ ¸ðµ¨Àº ¾×»óÈ ½ÃÀÛÁ¡ ¹× µ¿Àû °Åµ¿À» º¸´Ù Á¤¹ÐÇÏ°Ô Æò°¡ÇÏ¿´°í, ÀԷº¯¼öÀÇ ¼ö°¡ °¨¼ÒÇÏ°í »êÁ¤¹æ¹ýÀÌ °£ÆíÇØÁ³´Ù. |
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| In this paper, the application of the DSC model to the analysis of liquefaction potential is examined through experimental and analytical investigations. For more realistic description of dynamic responses of saturated sands, the DSC model was modified based on the dynamic effective stress path and excess pore pressure development. Both static and cyclic undrained triaxial tests were performed for sands with different relative densities and confining stresses. Based on test results, a classification of liquefaction phases in terms of the dynamic effective stress path and the excess pore pressure development was proposed and adopted into the modified DSC model. The proposed methods using the original and modified DSC models were compared with examples with different relative densities and confining stresses. Based on the comparisons between the predicted results using the original and modified DSC models and experimental data, the parameters required to define the model were simplified. It was also found that modified model more accurately simulate initial liquefaction and dynamic responses of soil under cyclic undrained triaxial tests. |
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| Ű¿öµå |
| Disturbance;Disturbed state concept;Earthquakes;Excess pore pressure;Liquefaction; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.3, 2008³â, pp.35-51
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200818259612254)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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