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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.6, 2004³â, pp.19-27
À¯ÇÑ¿ä¼ÒÇØ¼®¿¡ ÀÇÇÑ ½îÀϳ×ÀϸµÀÇ ³×ÀÏ °æ»ç°¢ÀÇ ¿µÇâ¿¡ °üÇÑ ¿¬±¸
( The Effects of Nail Inclination in Soil Nailing by Finite Element Analysis )
õº´½Ä;±è¿øÃ¶;À±Ã¢±â; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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½îÀϳ×Àϸµ °ø¹ýÀº 1972³â ÇÁ¶û½º¿¡¼­ óÀ½ ½Ã°øµÈ ÀÌ·¡·Î, ÃÖ±Ù µé¾î ±× Àû¿ë¼ºÀÌ ´õ¿í È®´ëµÇ°í ÀÖÀ¸³ª ¾ÆÁ÷±îÁö ¼¼°èÀûÀ¸·Î °øÀÎµÈ ¼³°è¹æ¹ýÀº ¾øÀ¸¸ç ¼­·Î ´Ù¸¥ °¡Á¤À» °¡Áö¹Ç·Î ¼³°èÁ¢±Ù ¶ÇÇÑ ¿ÏÀüÈ÷ ´Ù¸£´Ù. ¶ÇÇÑ ±âÁ¸ÀÇ Á¦¾ÈµÈ ³×ÀÏÀÇ ÃÖÀû °æ»ç°¢Àº Á¦¾ÈÀÚ¿¡ µû¶ó ¼­·Î ´Ù¸£¹Ç·Î ³×ÀÏ °æ»ç°¢¿¡ ´ëÇÑ ¿µÇâÀº ±Ô¸íµÇ¾î¾ß ÇÒ ¼³°èº¯¼öÀÌ´Ù. µû¶ó¼­, º» ¿¬±¸¿¡¼­´Â ½îÀϳ×Àϸµ º®Ã¼ÀÇ ¼öÆòº¯À§¿¡ ´ëÇÑ ³×ÀÏÀÇ °æ»ç°¢¿¡ ´ëÇÑ ¿µÇâÀ» ºÐ¼®Çϱâ À§ÇÏ¿© À¯ÇÑ¿ä¼ÒÇØ¼® ÇÁ·Î±×·¥ÀÎ SOILSTRUCT°¡ »ç¿ëµÇ¾ú´Ù. ÇÁ¶û½ºÀÇ ½îÀϳ×ÀÏ ¿¬±¸ ÇÁ·ÎÁ§Æ®ÀÎ CLOUTERREÀÇ CEBTP No. 1¿¡¼­ ÃøÁ¤µÈ ¼öÆòº¯À§¿Í Á¦½ÃµÈ Áö¹Ý ¹°¼ºÄ¡¸¦ Àû¿ëÇÏ¿© FEMÇØ¼®À» À§ÇÑ ±âº» ¸ðµ¨À» ¼±Á¤ÇÏ¿´´Ù. ±×¸®°í, ¼±Á¤µÈ ±âº» ¸ðµ¨À» »ç¿ëÇÏ¿© ³×ÀÏÀÇ ¼³Ä¡ °¢µµ¿¡ µû¸¥ º®Ã¼ ¼öÆòº¯À§ÀÇ ¿µÇâÀ» ºÐ¼®Çϱâ À§Çؼ­ ³×ÀÏÀÇ °æ»ç°¢À» 0$^{circ}$¿¡¼­ 30$^{circ}$±îÁö 5$^{circ}$°£°ÝÀ¸·Î º¯È­½ÃŰ¸é¼­ ÃÖÀûÀÇ ³×Àϰæ»ç°¢À» ¾ò°íÀÚ ÇÏ¿´´Ù. ±× °á°ú, º®Ã¼ÀÇ º¯À§°¡ ÃÖ¼Ò·Î ¹ß»ýÇÏ´Â °æ»ç°¢Àº 20$^{circ}$¿´À¸¸ç, ³×ÀÏÀÇ °æ»ç°¢ÀÌ Áõ°¡ÇÒ¼ö·Ï ³×ÀÏ¿¡¼­ À¯¹ßµÇ´Â ÀÎÀå·ÂÀº Áõ°¡ÇÏ¿´´Ù. ±×·¯³ª ¼öÆòº¯À§¿¡ ´ëÇÑ ³×ÀÏ °æ»ç°¢ÀÇ ¿µÇâÀº ÀûÀ¸¹Ç·Î ÇöÀå¿©°Ç¿¡ µû¶ó ½Ã°ø¼ºÀÌ ¿ì¼±µÇ¾î¾ß ÇÏ´Â °ÍÀ¸·Î ºÐ¼® µÇ¾ú´Ù. ¶ÇÇÑ ÃÖÇÏ´Ü ³×ÀÏÀ» Á¦¿ÜÇϰí, ³×ÀÏÀÇ ½Éµµ°¡ ±í¾îÁú¼ö·Ï ³×ÀÏ¿¡¼­ À¯¹ßµÇ´Â ÀÎÀå·ÂÀÌ Áõ°¡ÇϹǷΠ¼³°è½Ã ³×ÀÏÀÇ Àç·áÆÄ±«¸¦ ¹æÁöÇϱâ À§ÇØ ³×ÀÏÀÇ °­µµ¿Í º¯À§ °ü°è¸¦ °í·ÁÇÏ¿© ÀûÀýÇÑ ³×ÀÏÁ÷°æÀ» Àû¿ëÇÏ¿©¾ß ÇÑ´Ù.
Since the first construction of soil nailing in France in 1972, the application of soil nailing has increased. However, there is currently no design method which is universally accepted or agreed upon far soil nailed wall, because each of the design methods has different assumptions and, therefore, different approaches, moreover, since the suggested optimal inclination angles of nails are different by researchers. Therefore, the effect of nail inclination with soil nailing is analyzed by FEM. In this study, Finite element program SOILSTRUCT was applied for the effect analysis of nail inclination in soil nailed wall. For this finite element analysis, CEBTP No. 1 project data were used. The analyzed nail inclination ranged from 0$^{circ}$ to 30$^{circ}$ with 5$^{circ}$ intervals. The result of finite element analysis showed that the most optimal inclination was 20$^{circ}$ Also, the tension farce in the nails increased as the nail inclination increased. However, the effect of nail inclination on the wall deformation was very little. Therefore, constructability seems to be more important than nail inclination. Also, the tension force in the nails increases as the nail depth below the top of the wall increases, except f3r the lowest nail. Therefore, appropriate nail diameter should be used to prevent breakage of nails with considering nail strength-deformation interaction.
 
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Finite element analysis;Nail inclination;Soil nailing;SOILSTRUCT;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.6, 2004³â, pp.19-27
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922633874)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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