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Çѱ¹Áö¹Ý°øÇÐȸ / v.14, no.5, 1998³â, pp.5-16
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ÅͳΠ¼³°èÁ¶°ÇÀ» °í·ÁÇÑ ÇÏÁߺйèÀ²ÀÇ Á¤·®Àû »êÁ¤¿¡ °üÇÑ ¿¬±¸ -ring-cut ±¼Âø°ø¹ýÀ» Áß½ÉÀ¸·Î-
( A Study on the Quantitative Evaluation of the Load Distribution Factors Considering the Design Conditions of Tunnel Especially for the Ring-cut Excavation Method ) |
| Àå¼®ºÎ;¹®Çö±¸; Á¤È¸¿ø, (ÁÖ) À¯½ÅÄÚÆÛ·¹ÀÌ¼Ç °Ç¼³±â¼ú¿¬±¸¼Ò;Á¤È¸¿ø, ÇѾç´ëÇб³ °ø°ú´ëÇÐ Áö±¸È¯°æ°Ç¼³°øÇкÎ;
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| °ø»çÁß ÅͳÎÀº ¸·ÀåºÎÀÇ Á¾¹æÇâ ¹× È¾¹æÇâ ¾ÆÄ¡°Åµ¿¿¡ ÀÇÇÏ¿© ÁÖº¯ Áö¹ÝÀº 3Â÷¿øÀû º¯Çü°Åµ¿À» º¸À̳ª, ÅͳΠ¾ÈÁ¤¼º ÇØ¼®¿¡´Â Àü»êÈ¿À² µîÀÇ ÀÌÀ¯·Î 2Â÷¿ø ¼öÄ¡ÇØ¼®¹ýÀÌ ÀϹÝÀûÀ¸·Î Àû¿ëµÇ°í ÀÖ´Ù. ÇÏÁߺйèÀ²Àº ÅͳÎÀÇ ±¼ÁøÈ¿°ú¸¦ °í·ÁÇϱâ À§ÇÏ¿© 2Â÷¿ø ÇØ¼®¿¡ µµÀÔµÈ °ÍÀ¸·Î Áö¹Ýº¯À§, ¼ôÅ© ¸®Æ® ¹× ·Ïº¼Æ®¿Í °°Àº 1Â÷ Áöº¸ÀçÀÇ ÇÏÁß µî°ú °°Àº ÇØ¼®°á°ú¿¡ Å« ¿µÇâÀ» ¹ÌÄ£´Ù. ¶ÇÇÑ, 3Â÷¿ø ÇØ¼®À» ÀÌ¿ëÇÑ ±âÁ¸ÀÇ ¿¬±¸¿¡ ÀÇÇϸé, Áö¹ÝÀÇ º¯ÇüƯ¼º, ÅͳÎÅ©±â, ±¼ÁøÀå µîÀÌ ÇÏÁߺйèÀ²¿¡ ÁÖ¿äÇÑ ¿µÇâÀ» ¹ÌÄ£´Ù´Â »ç½ÇÀÌ ÀÔÁõµÇ¾ú´Ù. ±×·¯³ª, ¼³°èÁ¶°Ç¿¡ ´ëÇÑ ÇÏÁߺйèÀ²ÀÇ Á¤·®Àû »êÁ¤¹ýÀÇ ºÎÀç ·Î ÀÎÇÏ¿© ½ÇÁ¦ ÇØ¼®½Ã¿¡´Â ¼³°èÁ¶°ÇÀ» ¹«½ÃÇÑ ÇÏÁߺйèÀ²ÀÌ Àû¿ëµÇ°í ÀÖ´Â ½ÇÁ¤ÀÌ´Ù. ÀÌ¿¡, º» ³í¹®¿¡¼´Â ±âÁ¸ ¿¬±¸(Á¤ ´ë¿, 1993)¿¡¼ Á¦½ÃÇÑ 72°³ÀÇ 3Â÷¿ø ÇØ¼®°á°ú¿¡ ´ëÇÑ È¸±ÍºÐ¼®À» ÅëÇÏ¿© ÇÏÁߺйèÀ²À» Á¤·®ÀûÀ¸·Î »êÁ¤ÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» Á¦½ÃÇÏ¿´´Ù. ¶ÇÇÑ. ring-cut°ø¹ýÀº ¸·ÀåÀÇ ÀÚ¸³¼º ÀÌ ¸Å¿ì ºÒ·®ÇÑ Á¶°Ç¿¡ Àû¿ëµÇ´Â °ø¹ýÀÓ¿¡µµ ºÒ±¸ÇÏ°í ±âÁ¸ÀÇ 2Â÷¿ø ÇØ¼® ¹ýÀ¸·Î´Â ¸·ÀåÄÚ¾ÆÀÇ Áø ÁöÈ¿°ú¸¦ °í·ÁÇÏÁö ¸øÇÏ´Â ¹®Á¦Á¡ÀÌ ÀÖ¾ú´Ù. µû¶ó¼, 2Â÷¿ø ¹× 3Â÷¿ø ¼öÄ¡ÇØ¼®À» ÅëÇÏ¿© ring-cut°ø ¹ý¿¡ ´ëÇÑ ±âÁ¸ ÇØ¼®¹ýÀÇ ¹®Á¦Á¡À» °ËÅäÇÏ¿´À¸¸ç º» °ø¹ý¿¡ ´ëÇÑ ÇÏÁߺйèÀ²ÀÇ º¸Á¤Ä¡¸¦ Á¦½ÃÇÏ¿´ ´Ù. |
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| 2-D numerical methods have been applied to analyze the stability of tunnels because of computation efficiency, though the ground around the tunnel under construction shows 3-D reformational behaviour due to the transverse and longitudinal arching effects. Load distribution factors are introduced to the 2-D analysis for the consideration of the effects of the tunnel advance in three dimensions. The load distribution factors influence significantly the ground deformation and the load of primary supports like shotcrete and rockbolts. According to the previous studies for 3-D numerical studies. it was shown that load distribution factors were heavily dependent on the ground deformational properties, tunnel size and the advance length of a tunnel. However, as the quantitative methods evaluating the factors have not been presented yet, constant values have been assigned to the factors for 2-D analysis even if the conditions for tunnel design are different. Accordingly, this paper presents the method to evaluate quantitatively the load distribution factors through the regression analysis of 3-D analysis data on 72 design cases. Also, new modification to the load distribution factors are suggested for the ring-cut excavation method because the conventional 2-D analysis is not able to consider the support effects of the core left on the tunnel face. |
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| Ű¿öµå |
| Tunnel;2-D analysis;Load distribution factors;Ring-cut excavation method;Numerical technique; |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.14, no.5, 1998³â, pp.5-16
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920448362)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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