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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.6, 2004³â, pp.61-73
Á¦¹æ ¼ºÅä½Ã Áö¹Ý°Åµ¿¿¡ ´ëÇÑ Á¡ÅäÀÇ ºñ¼±Çü Åõ¼ö¼ºÀÇ ¿µÇâ
( Effect of the Non-linear Permeability of Clays on the Behavior of Soils in Embankment Construction )
±èÅÂÈÆ;ÇÑŰï;·ù±âÁ¤;À̼Û; ÇÑÁøÁß°ø¾÷ Åä¸ñ¼³°èÆÀ;ÇÑÁøÁß°ø¾÷ Åä¸ñ¼³°èÆÀ;ÇÑÁøÁß°ø¾÷;¼­¿ï½Ã¸³´ë Åä¸ñ°øÇаú;
 
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ÀÏ¹Ý ÀÚ¿¬ Á¡ÅäÁö¹ÝÀÇ Åõ¼ö°è¼ö´Â ´Ù¾çÇÑ ÀÀ·Â¼öÁØ¿¡ µû¶ó ºñ¼±ÇüÀûÀΠƯ¼ºÀ» º¸À̸ç, ÀÌ·¯ÇÑ Áö¹Ý Åõ¼ö°è¼öÀÇ ºñ¼±Çü¼ºÀº »óÀçÇÏÁß ÀçÇϽà Áö¹ÝÀÇ ¾Ð¹Ð½Ã°£ ¹× Áö¹Ý º¯Çü Ư¼º¿¡ ¿µÇâÀ» ÁÖ°Ô µÈ´Ù. µû¶ó¼­, º» ¿¬±¸¿¡¼­´Â Áö¹ÝÀÇ ºñ¼±Çü Åõ¼ö°è¼öÀÇ ¿µÇ⼺À» °íÂûÇϱâ À§ÇØ ¼öÁ¤ Cam-clay ¸ðµ¨°ú BiotÀÇ ¾Ð¹ÐÀÌ·ÐÀ» Á¢¸ñÇÑ ¿¬¸³ÀÌ·Ð(Coupled theory)À» ÀÌ¿ëÇÏ¿© FEM ¼öÄ¡ÇØ¼®À» ½Ç½ÃÇÏ¿´´Ù. °ËÅä °á°ú ºñ¼±Çü Åõ¼ö¼ºÀº ºñ¼±Çü Ư¼ºÀ» ³ªÅ¸³»´Â Åõ¼ö°è¼ö º¯È­ºñ¿Í Àüü °£±Øºñ¿¡ ´ëÇÑ Æò±Õ Åõ¼ö°è¼öÀÇ Å©±â¿¡ µû¶ó Áö¹Ý º¯Çü°ú ÁöÁß °úÀ×°£±Ø¼ö¾Ð¿¡ ¹ÌÄ¡´Â ¿µÇ⼺ÀÌ »óÀÌÇÏ°Ô ³ªÅ¸³µ´Ù. µû¶ó¼­, º¸´Ù ÇöÀå¿¡ ±ÙÁ¢ÇÑ ÇØ¼®À» ½Ç½ÃÇϱâ À§Çؼ­´Â Áö¹Ý Åõ¼ö°è¼öÀÇ º¯È­ºñ¿Í Æò±Õ Åõ¼ö°è¼öÀÇ Å©±â¿¡ µû¶ó Åõ¼ö°è¼öÀÇ ºñ¼±Çü Ư¼ºÀ» °í·ÁÇØ¾ßÇÒ °ÍÀÎÁö¸¦ ÆÇ´ÜÇØ¾ß ÇÒ °ÍÀÌ´Ù.
The coefficient of permeability of natural clay shows a nonlinear property which is related to various stress level of soils, and this nonlinear property has effect on the period of consolidation and the property of deformation in clay soils under loading. Thus, in this paper the numerical analysis was conducted by FEM-using coupled theory which incorporated Biot's consolidation theory into modified Cam-clay model- to consider the effects of nonlinear permeability on the behavior of clay soils under loading. The result of this paper showed that nonlinear permeability had different effects on the deformation and excess pore water pressure in clay soils according to the change of ratios of coefficients of permeability which was presented a degree of nonlinear property, and average coefficients of permeability of soils. Therefore, it was concluded that nonlinear permeability should be considered according to both the change of ratios of coefficients of permeability and average coefficients of permeability to conduct more simultaneous analyses to field conditions.
 
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Consolidation analysis;Coupled analysis;Modified cam-clay model;Nonlinear permeability;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.6, 2004³â, pp.61-73
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922634099)
¾ð¾î : Çѱ¹¾î
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