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Çѱ¹Áö¹Ý°øÇÐȸ / v.10, no.2, 1994³â, pp.121-140
´ë¼ö´©¼±ÆÄ¾ç¿¡ ´ëÇÑ È®·ü·ÐÀû 3Â÷¿ø »ç¸é¾ÈÁ¤Çؼ®
( Probabilistic Three-Dimensional Slope Stability Analysis on Logarithmic Spiral Failure )
¼­Àμ®;±è¿µ¼ö; Á¤È¸¿ø, °æµ¿Àü¹®´ëÇÐ Åä¸ñ°ú;Á¤È¸¿ø, °æºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­ °æ°è°¡ ºÒ±ÔÄ¢ÇÏ°í ¿©·¯ ÅäÃþÀ¸·Î ÀÌ·ç¾îÁø ÀÚ¿¬°ú Àΰø »ç¸é¿¡ ´ëÇÑ, ÅäÃþÀÇ °æ°è¿¡¼­ ±¼ÀýÇÏ´Â ´ë¼ö³ª¼±°î¼±À» ÆÄ±«¸éÀ¸·Î °¡Á¤ÇÑ ½Å·ÚµµÇؼ® ¸ðµ¨À» °³¹ßÇÏ¿´´Ù. ÀÌ ¸ðµ¨¿¡¼­, »ç¸éÆÄ±«Å䱫´Â ¾ç ³¡´ÜÀÌ ¼öÁ÷Æò¸éÀ¸·Î µÈ ÀÏÁ¤ÇÑ ÆøÀ» °¡Áø Cylindroid·Î °¡Á¤ÇÏ¿© ÀýÆí¹ýÀ» Àû¿ëÇÏ¿´°í, °­µµÁ¤¼öÀÇ °ø°£ÀûÀÎ º¯È­, ºÒÃæºÐÇÑ ½Ã·áÀÇ ¼ö¿¡ ÀÇÇÑ ¿ÀÂ÷ ±×¸®°í ½ÇÇè½Ç°ú ÇöÀåÁ¶°ÇÀÇ Â÷ÀÌ¿¡¼­ ¿À´Â ¸ðµ¨¿ÀÂ÷¸¦ °í·ÁÇÏ¿©, FOSM ±×¸®°í SOSMÀÇ ¹æ¹ýÀ¸·Î ½Å·Úµµ Áö¼ö¸¦ ±¸ÇÏ¿© ÆÄ±«È®·üÀ» ±¸ÇÏ´Â ÇÁ·Î±×·¥À» °³¹ßÇÏ¿´´Ù. ÀÌ·¯ÇÑ ¿¬±¸¸¦ ±âÃÊ·Î ´ÙÀ½ÀÇ °á°ú¸¦ ¾ò¾ú´Ù: (1) ³»ºÎ¸¶Âû°¢ÀÇ º¯µ¿°è¼ö°¡ Á¡Âø·ÂÀÇ º¯µ¿°è ¼öº¸´Ù ¹Î°¨ÇÏ°Ô ¿µÇâÀ» ¹ÌħÀ» º¸¿©ÁÖ¾ú´Ù. µû¶ó¼­ ´ë¼ö³ª¼±ÆÄ±«¸éÀÇ »ç¸é¾ÈÁ¤Çؼ®¿¡¼­ ³»ºÎ¸¶ Âû°¢ÀÇ ºÒÈ®½Ç¼ºÀÌ »ç¸é¾ÈÁ¤¿¡ ´õ Å« ¿µÇâÀ» ÁֹǷΠ³»ºÎ¸¶Âû°¢ÀÇ ÃßÁ¤¿¡ ´õ Å« ÁÖÀǸ¦ ±â¿ï¿©¾ßÇÒ °ÍÀ¸·Î »ç·áµÈ´Ù. (2) ÁöÁøÀÌ ¾øÀ» °æ¿ì¿¡´Â, »ç¸éÆøÀÌ Áõ°¡ÇÔ¿¡ µû¶ó Àüü 3Â÷¿øÆÄ±«È®·ü°ú ÇѰèÆÄ±«ÆøÀº Áõ°¡ÇÏ¿´À¸¸ç, ÁöÁøÀÌ ÀÖÀ» °æ¿ì¿¡´Â Àüü 3Â÷¿øÆÄ±«È®·üÀº Áõ°¡ÇÏ¿´À¸³ª ÇÑ°è ÆÄ±«ÆøÀº Àüü »ç¸éÆøÀÌ ºñ±³Àû Ŭ ¶§, Áøµµ°¡ Ä¿Áü¿¡ µû¶ó ±Þ°ÝÈ÷ °¨¼ÒÇÏ¿´´Ù. (3) ÁöÇϼöÀ§´Â ³ôÀ»¼ö·Ï, Àü´Ü°­µµ¿Í ¼öÁ¤°è¼ö´Â ÀÛÀ»¼ö·Ï »ç¸éÀÇ ÇÑ°èÆøÀ» °¨¼Ò½ÃŰ´Â È¿°ú°¡ ÀÖ´Ù.
This paper presents the probabilistic model to evaluate the three-dimensional stability of layered deposits and c-0 soil slopes. Rotational slides are assumed with a cylindroid control part terminated with plane ends. And the potential failure surfaces in this study are assumed with the logarithmic spiral curve refracted at boundary of layers. This model takes into consideration the spatial variabilities of soil properties and the uncertainties stemming from insufficient number of samples and the discrepancies between laboratory measured and in -situ values of shear strength parameters. From the probabilistic approxi mate method (FOSM and SOSM method), the mean and variance of safety factor are calculated, respectively. And the programs based on above models is developed and a case study is analysed in detail to study the sensitivity of results to variations in different parameters by using the programs developed in this study. On the basis of thin study the following conclusions could be stated : (1) The sensitivity analysis shown that the probability of failure is more sensitive to the uncertainty of the angle of internal friction than that of the cohesion, (2) The total 3-D proability of failure and the critical width of failure are significantly affected by total width of slope. It is found that the total 3-D probability of failure and the critical width of failure increase with increasing the slope width when seismic forces do not exist and the total 3-D probability of failure increases with increasing the slope width and the critical width of failure decreases when seismic intensity is relatively large, (3) A decrease in the safety factor (due to effect such as a rise in the mean ground water level, lower shear strength parameters, lower values for the correction factors, etc.) would result in reduction in the critical width of failure.
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.10, no.2, 1994³â, pp.121-140
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920445463)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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