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Çѱ¹Áö¹Ý°øÇÐȸ / v.12, no.4, 1996³â, pp.5-20
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3Â÷¿ø ÅͳÎÇØ¼®¿¡ ÀÇÇÑ °°üº¸°Çü ´Ù´Ü±×¶ó¿ìÆÃÀÇ º¸°È¿°ú
( Improved Effects of Steel Pipe Reinforced Multi-Step Grouting Method Using the Nonlinear 3-D Tunnel Analysis ) |
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| º» ³í¹®Àº ºñ¼±Çü À¯ÇÑ¿ä¼Ò ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿© °°üº¸°Çü ´Ù´Ü±×¶ó¿ìÆÃÀÇ Áö¹Ýº¸°È¿°ú¿Í ÁÖº¯Áö¹ÝÀÇ °Åµ¿À» °ËÅäÇϱâ À§ÇÏ¿© Áö¹ÝÁ¶°ÇÀÌ ÅͳÎõ´ÜºÎ¿¡ ÃæÀûÃþÀÌ ºÐÆ÷ÇÏ¿© °°ü´Ù´Ü±×¶ó¿ìÆÃÀ» Àû¿ëÇÑ ÇöÀåÀ» ´ë»óÀ¸·Î À¯ÇÑ¿ä¼Ò 2Â÷¿ø°ú 3Â÷¿ø ¸ðµ¨·Î ³ª´©¾î ÇØ¼®ÇÏ¿´´Ù. ÇØ¼® °á°ú °°üº¸°È¿°ú¸¦ ºÐ¼®Çϱâ À§Çؼ´Â 2Â÷¿øÇؼ®º¸´Ù´Â 3Â÷¿øÇؼ®ÀÌ ÇʼöÀû ÀÓÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ±× È¿°ú´Â ¸·ÀåºÎ±ÙÀÇ À½·ÂÁýÁßÇö»óÀ» °ñ°í·ç ºÐÆ÷½ÃÄÑÁÖ´Â °°üÀÇ °¼º¿¡ ÀÇÇÏ¿© ¾ÈÀüÀ²ÀÌ »ó´ëÀûÀ¸·Î ³ô¾ÆÁüÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ÇÑÆí ÅͳÎõ´ÜÀÇ Ä§ÇÏ·® º¯È´Â Åͳθ·ÀåÀ§Ä¡°¡ ÃøÁ¤ÁöÁ¡¿¡ µµ´ÞÇϱâ ÀÌÀü¿¡ ÃÑ¿¹»óº¯À§ÀÇ 40%Á¤µµ°¡ ¹ß»ýµÇ¸ç, ¸·ÀåÀ§Ä¡°¡ ÃøÁ¤ÁöÁ¡À» Åë°úÇÏ¿© ÅͳÎÁ÷°æÁ¤µµÀÇ °Å¸®¿¡ µµ´ÞÇÏ´Â µ¿¾È Àüü¿¹»óº¯À§ÀÇ 60%°¡ ¹ß»ýµÉ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ °°üº¸°À¸·Î ÀÎÇÏ¿© ÁÖº¯Áö¹ÝÀÇ º¯À§ ¹× ÀÀ·ÂÀÇ ¾ïÁ¦¹üÀ§´Â ÅͳΠõ´ÜºÎ Áï ±íÀ̺ñ 0.83 ¿¡¼ 0.38¹üÀ§¿Í Åͳθ·ÀåÀü¹æ 26(d:ÅͳÎÁ÷°æ)ÁöÁ¡±îÁö ³ªÅ¸³ª¸ç, º¯À§¾ïÁ¦È¿°ú´Â ÃÑ ¿¹»óº¯À§·®ÀÇ ¾à 200Á¤µµÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| In this study it was analyzed by 2-D FEM and 3-D FEM to evaluate the ground reinforceing effect of steel pipe reinforced multi -step grouting (SPRG) technique and the behavior of ground in the vicinity using the nonlinear FEM program for the ground condition of alluvium located on the top of tunnel applied by SPRG technique. It was found that the nonlinear 3-D analysis performed better than 2-D analysis in evaluating the usefulness of the SPRG technique, and it was also found that the safety was relatively secured by the stiffness of steel pipe to distribute the concentrated stress in the tunnel faceing. It was reported that the change of settlement on the top of tunnel becomes about 40% of the total expected settlement before tunnel faceing reaches tunnel gauging point, and 60% of the total expected settlement while tunnel facing passes tunnel gauging point and takes a distance about tunnel diameter. With the aid of the SPRG technique the control range of displacement and stress of the ground in the vicinity could be reached up to tunnel top, namely depth ratio from 0.38 to 0.83 or 2D(D : tunnel diameter) before the tunnel facing, and about 20% of settlement control in this particular case was possible. |
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| Ű¿öµå |
| SPRG;Steel Pipe Reinforced Grouting;3-D;2-D Nonlinear FEM Analysis;Settlement;Depth ratio; |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.12, no.4, 1996³â, pp.5-20
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920446632)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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