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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.4, 1999³â, pp.57-67
°­µµÁõ°¡À²À» °í·ÁÇÑ ¿¬¾àÁ¡ÅäÁö¹Ý À§ÀÇ ¼ºÅäÀÇ ¾ÈÁ¤Çؼ®
( Stability Analysis of Embankment on Soft Clay considering the Rate of Strength Increase )
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¿¬¾àÁ¡ÅäÁö¹Ý À§ÀÇ ¼ºÅä»ç¸é¿¡ ´ëÇØ ¾ÈÁ¤Çؼ®À» ¼öÇàÇÒ °æ¿ì, Á¾·¡¿¡´Â ÇØ¼®ÀÇ °£Æí¼º ¶§¹®¿¡ ÇÏÁßÀçÇÏ ÇüŸ¦ ¼ø°£ÀçÇÏ·Î °¡Á¤Çϰí, Á¡ÅäÃþ ±íÀÌ¿¡ ´ëÇØ Æò±ÕÀûÀÎ ºñ¹è¼öÀü´Ü°­µµ$(s_u)$¸¦ Àû¿ëÇÏ¿© ÇØ¼®ÇØ ¿Ô´Ù. ±×·¯³ª ½ÇÁ¦ ÇöÀåÀÇ ÇÏÁßÀçÇÏ ÇüÅ´ ¼ºÅäÇÏÁßÀÇ Á¡ÁõÀû Áß°¡¿Í ¹æÄ¡°¡ ´Ü°èÀûÀ¸·Î ¹Ýº¹¼öÇàµÇ´Â ÇüÅÂÀ̹ǷΠÁ¡ÅäÁö¹ÝÀÇ ¾Ð¹ÐÁøÇà¿¡ µû¸¥ ºñ¹è¼öÀü´Ü°­µµÀÇ Áõ°¡°¡ ¹ß»ýÇÏ°Ô µÈ´Ù. º» ¿¬±¸¿¡¼­´Â Á¤±Ô¾Ð¹Ð »óÅÂÀÎ ¿¬¾àÁ¡ÅäÁö¹Ý À§ÀÇ Á¡Áõ¼ºÅä¿Í ¹æÄ¡±â°£À» °í·ÁÇÒ ¼ö ÀÖ°í, ¶ÇÇÑ ¾Ð¹Ð°æ°ú½Ã°£°ú Á¡ÅäÁö¹ÝÀÇ ±íÀÌ¿¡ µû¸¥ °­µµÁõ°¡À²À» °í·ÁÇÒ ¼ö ÀÖ´Â ¾ÈÁ¤Çؼ® ÇÁ·Î±×·¥(RSI-SLOPE)À» °³¹ßÇÏ¿´´Ù. ÀÌ ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿© ÀÓÀÇ·Î °¡Á¤ÇÑ ÇØ¼®´Ü¸é¿¡ ´ëÇÏ¿© ¼ºÅä¼³°è¸¦ ¼öÇàÇÏ¿´°í, ÇѰ輺Åä°í¿¡ ´ëÇØ¼­ °­µµÁõ°¡À²À» °í·Á ¾Ê´Â Á¾·¡ÀÇ ¾ÈÁ¤Çؼ® ÇÁ·Î±×·¥ÀÇ °á°ú¿Í ºñ±³ÇÏ¿´´Ù. ¶ÇÇÑ, ¼ºÅä¼³°è½Ã ¾Ð¹Ð°è¼ö$(c_u)$¿Í ¹è¼ö°Å¸® $(H_{dr})$ÀÇ ¿µÇâÀ» ºñ±³.ºÐ¼®ÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­ °³¹ßµÈ °­µµÁõ°¡À²À» °í·ÁÇÑ ¾ÈÁ¤Çؼ® ÇÁ·Î±×·¥(RSI-SLOPE)À» ÀÌ¿ëÇÏ¸é °èȹµÈ ¼ºÅä°í±îÁö ÃÖ¼ÒÇã¿ë¾ÈÀüÀ²À» ¸¸Á·Çϸ鼭 ¼ºÅäÇÒ ¼ö ÀÖ´Â ¼ºÅä¿Ï·á±â°£À» ±¸ÇÒ ¼ö Àֱ⠶§¹®¿¡ È¿°úÀûÀÎ ¼ºÅä°èȹ ¹× ¼³°è°¡ °¡´ÉÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.
In conventional stability analysis of embankment on soft clay ground, an averaged undrained shear strength$(s_u)$ for the depth of clay layer is usually used. Also, all applied load is assumed to an immediate load for simplicity of analysis. The load in the field, however, increases gradually. Undrained shear strength increases during loading due to consolidation of clay ground. In this study, the stability analysis program(RSI-SLOPE) is developed. By using this program, it is possible to consider the rate of strength increase according to the elapsed time of consolidation and the depth of clay ground. And the rested duration for consolidation and gradually increased load can also be considered. Using the examples of some embankments, the critical embankment heights calculated by RSI-SLOPE program are compared with those by PCSTABL without the considerations of gradually increased load and rate of strength increase. In addition, this study contains analysis and comparison about the influence of coefficient of consolidation$(c_u)$ and drainage distance$(H_{DR})$ in the embankment design. RSI-SlOPE program may be useful for more effective and accurate embankment design.
 
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Undrained shear strength;Rate of strength increase;Embankment design;Gradually increased load;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.4, 1999³â, pp.57-67
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749317)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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