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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.1, 2004³â, pp.121-129
¿ªÇÐÀûÀ¸·Î ¾ö¹ÐÇÑ »ç¸é¾ÈÁ¤µµÇ¥ÀÇ Á¦¾È
( Proposal of a Mechanically Rigorous Slope Stability Chart )
±èÁ¾¹Î; ¼¼Á¾´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ±ÕÁú ´Ü¼ø»ç¸éÀÇ ¾ÈÁ¤°ËÅä ½Ã °£ÆíÇÏ°Ô ÀÌ¿ëÇÒ ¼ö ÀÖ´Â »ç¸é¾ÈÁ¤µµÇ¥¸¦ Á¦¾ÈÇÏ¿´´Ù. ±âÁ¸ÀÇ »ç¸é¾ÈÁ¤µµÇ¥´Â ´ëºÎºÐ ÇѰèÆòÇüÇØ¼®¿¡ ±Ù°ÅÇϰí ÀÖÀ¸³ª Àß ¾Ë·ÁÁø ¹Ù¿Í °°ÀÌ ÇѰèÆòÇüÇØ¼®Àº ¿ªÇÐÀûÀ¸·Î ¾ö¹ÐÇÑ ÇØ¼®±â¹ýÀÌ ¾Æ´Ï´Ù. ¹Ý¸é °¡»óÀϹæÁ¤½Ä°ú ¼Ò¼ºÀÌ·ÐÀÇ °æ°èÁ¤¸®¸¦ ÀÌ¿ëÇÑ ÇѰèÇØ¼®Àº °è»êÀÌ °£´ÜÇϸ鼭µµ ¿ªÇÐÀû ¾ö¹Ð¼ºÀÌ º¸ÀåµÇ¾î »ç¸é°ú °°Àº Áö¹Ý±¸Á¶¹°ÀÇ ¾ÈÁ¤Çؼ®¿¡ ÀûÇÕÇÑ ÇØ¼®±â ¹ýÀÌ´Ù. ƯÈ÷ À¯ÇÑ¿ä¼Ò¿Í ÃÖÀûÈ­±â¹ýÀ» Àû¿ëÇÑ ¼öÄ¡ÇѰèÇØ¼®Àº ´Ù¾çÇÑ »ç¸éÁ¶°ÇÀ» ¹Ý¿µÇÒ ¼ö ÀÖÀ» »Ó ¸¸ ¾Æ´Ï¶ó ¾ÈÁ¤ÇØÀÇ ÃÖÀû°ªÀ» È¿À²ÀûÀ¸·Î »êÁ¤ÇÒ ¼ö ÀÖ´Â ÀåÁ¡ÀÌ ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â À¯È¿ÀÀ·Â °³³äÀÇ ¼öÄ¡ÇѰèÇØ¼®±â¹ýÀ» °³¹ßÇÏ°í ´Ù¾çÇÑ »ç¸éÁ¶°Ç¿¡ ´ëÇÑ ÇØ¼®À» ¼öÇàÇÏ¿© ¿ªÇÐÀûÀ¸·Î ¾ö¹ÐÇÑ »ç¸é¾ÈÁ¤µµÇ¥¸¦ Á¦¾ÈÇÏ¿´´Ù. À¯È¿ÀÀ·ÂÇØ¼®À» À§ÇÑ °£±Ø¼ö¾ÐÀÇ ¿µÇâÀº ±âÁ¸ÀÇ »ç¸é¾ÈÁ¤µµÇ¥¿Í °°ÀÌ °£±Ø ¼ö¾Ðºñ¸¦ Àû¿ëÇÏ¿© °í·ÁÇÏ¿´´Ù. Á¦¾ÈµÈ ¾ÈÁ¤µµÇ¥¿Í Spencer ¾ÈÁ¤µµÇ¥¸¦ ºñ±³ÇÑ °á°ú Spence. ¾ÈÁ¤µµÇ¥¸¦ Àû¿ëÇÏ¿© »ç¸é¼³°è¸¦ ¼öÇàÇÒ °æ¿ì ¾ÈÀüÃø ¼³°è°¡ µÊÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
In this study, a slope stability chart for assessing stability of homogeneous simple soil slopes is proposed. Most existing slope stability charts are based on limit equilibrium method, which is not rigorous in mechanical standpoint. Meanwhile, limit analysis based on the principle of virtual work and the bound theorems of plasticity is suitable for evaluating the stability of geotechnical structures such as slope due to its simplicity in computation and mechanical rigor. Numerical limit analysis taking advantage of finite elements and linear programming can consider various slope conditions and, in addition, find the optimum stability solution with effeciency. In this study, a numerical limit analysis program in terms of effective stress is developed and a mechanically rigorous slope stability chart is proposed by performing stability analyses for various slope conditions. Pore pressure ratio, commonly used in stability charts, is applied to consider the effects of pore pressure for effective stress analysis. As a result of comparison between proposed stability chart and Spencer's stability chart, it was found that Spencer's chart solutions are biased to lower bound which means conservative in design.
 
Ű¿öµå
Effective stress analysis;Limit analysis;Pore pressure ratio;Slope stability chart;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.1, 2004³â, pp.121-129
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922288748)
¾ð¾î : Çѱ¹¾î
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