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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.1, 2002³â, pp.17-28
½Ã°£-ÆÄ¶ó¹ÌÅÍ ¹ý¿¡ ÀÇÇÑ Åͳΰŵ¿ Ư¼º ¿¬±¸
( An Investigation of Tunnel Behaviour Using a Time-based 2-D Modelling Method )
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ÅͳÎÀÇ ¸·ÀåºÎ±Ù¿¡¼­´Â ÇÏÁßÀüÀ̰¡ º¹ÀâÇÑ 3Â÷¿øÀû °Åµ¿Æ¯¼ºÀ» ³ªÅ¸³½´Ù. ÀϹÝÀûÀ¸·Î 3Â÷¿ø ÇØ¼®Àº ÀÔ·ÂÀÚ·áÀÇ Áغñ ¹× °á°ú ÇØ¼®¿¡ ¸¹Àº ³ë·ÂÀ» ¿äÇϸç, ºñ¼±Çü ¾Ð¹ÐÇØ¼®À» ¼öÇàÇÏ´Â °æ¿ì ÄÄÇ»ÅÍ °è»ê¼ö¿ä°¡ Ä¿Áö´Â ¹®Á¦ ¶§¹®¿¡ ½ÇÁ¦¼³°è´Â 2Â÷¿ø ÇØ¼®¹ýÀ» ÁÖ·Î »ç¿ëÇÏ°Ô µÈ´Ù. 3Â÷¿øÀûÀÎ Åͳΰŵ¿À» 2Â÷¿øÀûÀ¸·Î ¸ðµ¨¸µÇϱâ À§ÇÏ¿©´Â ÅͳΠ±¼Áø°úÁ¤À» ¼öÄ¡ÇØ¼®ÀûÀ¸·Î Ç¥ÇöÇϱâ À§ÇÑ °æÇè ÆÄ¶ó¹ÌÅͰ¡ ¿ä±¸µÇ¸ç, ÇØ¼®°á°ú´Â ÀÌ ÆÄ¶ó¹ÌÅÍ °ª¿¡ µû¶ó Å©°Ô º¯È­Çϴ Ư¼ºÀ» ³ªÅ¸³½´Ù. ƯÈ÷ ÀÌ °ªÀÇ Æò°¡´Â ÁÖ·Î ÁÖ°üÀûÀÌ°í °æÇèÀûÀÎ ÆÇ´Ü¿¡ ÀÇÁ¸ÇÏ°Ô µÇ¹Ç·Î ÀÓÀǼºÀÌ Ä¿ ÇØ¼®ÀÇ ½Å·Ú¼º ¹®Á¦¸¦ ¾ß±âÇÒ ¼ö ÀÖ´Ù. ƯÈ÷ Áö¹Ý°Åµ¿ÀÌ °£±Ø¼ö µî ½Ã°£ÀÇÁ¸¼º ¿äÀο¡ ÀÇÇØ ¿µÇâÀ» ¹Þ´Â °æ¿ì ÀÌ ÆÄ¶ó¹ÌÅ͸¦ Æò°¡Çϱâ´Â ´õ¿í ¾î·Á¿öÁø´Ù. º» ³í¹®¿¡¼­´Â ÀÌ·¯ÇÑ ¹®Á¦Á¡À» °³¼±Çϱâ À§ÇÏ¿© Á¦¾ÈµÈ Time-based 2-D Modeling Method¸¦ »ç¿ëÇÏ¿© ÁöÇϼöÀ§°¡ ³ôÀº dzȭȭ°­Åä³» Åͳα¼Âø ¹®Á¦¿¡ Àû¿ëÇÏ¿´°í À̸¦ ºÐÇÒ ±¼Âø¿¡µµ Àû¿ë °¡´ÉÇϵµ·Ï È®ÀåÇÏ¿´´Ù. ÇØ¼®°á°ú´Â ½ÇÃø°á°ú¿Í Àß ÀÏÄ¡ÇÏ´Â °Åµ¿À» º¸¿´´Ù. ÀÌ ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© º¹ÇÕ¸·ÀåÅͳÎÀÇ °Åµ¿Æ¯¼ºÀ» Á¶»çÇÑ °á°ú, ¸¶Á¦Çü ÅͳδܸéÀÇ ¿ªÇÐÀû À¯ÀͼºÀÌ È®ÀεǾú´Ù.
Tunnel construction is a complex three dimensional operation. Since, however, it is neither possible nor useful to simulate all conditions and parameters in detail, a simplified two dimensional model is commonly employed in practice. The simulation of three dimensional conditions by a two dimensional model should use empirical parameters. The numerical predictions indicate that analysis results are highly dependent on the parameters. An improved modelling method based on time was adopted to account for three dimensional effect at the tunnel heading and time dependent nature, and used to perform an analysis of tunnelling in decomposed granite. The effects of weathering degree, tunnel shape and multi-drift excavation were investigated by using the method. It is identified that a structural benefit can be obtained by adopting a horse-shoe-shaped cross section with multi-drift excavation in mixed-force ground condition.
 
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FEM;Mixed-force tunnel;Time-based 2-D modeling;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.1, 2002³â, pp.17-28
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921043933)
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