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Çѱ¹Áö¹Ý°øÇÐȸ / v.17, no.6, 2001³â, pp.245-255
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( The Effect of Cut-slope on Structural Behavior of Cut-and-Cover Tunnel )
À¯°Ç¼±; ÇѶó´ëÇб³ °ÇÃࡤÅä¸ñ°øÇкÎ;
 
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±âÁ¸ °³Å¹½ÄÅͳÎÀº ±¼Âø°æ»ç¿Í °ü°è¾øÀÌ ÅͳλóºÎ¿¡´Â µÇ¸Þ¿òÁö¹ÝÀÇ ÀÚÁßÀÌ ±×¸®°í, Åͳκ®Ã¼¿¡´Â Á¤ÁöÅä¾ÐÀÌ ÀÛ¿ëÇÏ´Â °ÍÀ¸·Î °¡Á¤ÇÏ¿© ¼³°èµÇ°í ÀÖ´Ù. ±×·¯³ª °³Âø½ÄÅͳο¡ ½ÇÁ¦ ÀÛ¿ëÇÏ´Â Åä¾ÐÀº °³Âø±Ô¸ð¿¡ µû¶ó ´Ù¸£¸ç ÀÌ¿¡ µû¶ó ÅͳζóÀÌ´×ÀÇ ±¸Á¶Àû°Åµ¿ ¶ÇÇÑ ´Ù¸£°Ô ³ªÅ¸³­´Ù. º» ¿¬±¸¿¡¼­´Â ¼öÄ¡ÇØ¼®Àû¹æ¹ýÀ» »ç¿ëÇÏ¿© ±¼Âø°æ»ç°¡ ÅͳζóÀ̴׿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ´ÙÀ½°ú °°ÀÌ Á¶»çÇÏ¿´´Ù. ù°·Î, Áö¹Ý¹ü¿ë¼öÄ¡ÇØ¼®ÇÁ·Î±×·¥ÀÎ FLAC2D¸¦ »ç¿ëÇÏ¿© °³Âø°ø¹ýÀ¸·Î ½Ã°øµÈ ±âÁ¸ ÅͳÎÀÇ º¯Çü°Åµ¿À» ¸ð»çÇÒ ¼ö ÀÖ´Â ¼öÄ¡ÇØ¼®¹æ¹ýÀ» Ȱ¿ëÇÏ¿© ÇöÀåÀÇ °èÃø°á°ú¿Í ºñ±³ÇÏ¹Ç·Î½á ¼öÄ¡ÇØ¼®¹æ¹ýÀÇ Å¸´ç¼ºÀ» °ËÁõÇÏ¿´°í, µÑ°·Î, µ¿ÀÏÇÑ ¼öÄ¡ÇØ¼®±â¹ýÀ» Àû¿ëÇÏ¿© ±¼Âø°æ»ç°¡ $30^{circ};, 456{circ},; 60^{circ},; 75^{circ}%ÀÎ °³Âø½ÄÅͳο¡ ÀÛ¿ëÇÏ´Â Åä¾Ð ¹× º¯À§¿Í ÅͳζóÀ̴׿¡ ¹ß»ýÇÏ´Â ´Ü¸é·ÂÀ» Á¶»çÇÏ¿´´Ù. ¼öÄ¡ÇØ¼®¿¡ »ç¿ëµÈ °³Âø½ÄÅͳÎÀº 2Â÷·Î µµ·ÎÅͳÎÀ̸ç, ÅͳζóÀÌ´×°ú µÇ¸Þ¿òÁö¹Ý »çÀÌÀÇ ¸¶Âû·ÂÀ» °í·ÁÇϱâ À§ÇÏ¿© Á¢ÇÕ¸é ¿ä¼Ò¸¦ »ç¿ëÇÏ¿´´Ù. ¼öÄ¡ ÇØ¼®°á°ú, µÇ¸Þ¿òÁö¹Ý°ú ÅͳζóÀÌ´× ¹× ±¼Âø»ç¸é »çÀÌÀÇ ¸¶Âû·Â¿¡ ÀÇÇÑ µÇ¸Þ¿òÁö¹Ý ³»ºÎÀÇ ¾ÆÄªÇö»óÀ¸·Î ÀÎÇÏ¿© ±¼Âø °æ»ç°¡ Ŭ¼ö·Ï Åͳκ®Ã¼¿¡ »ó´ëÀûÀ¸·Î ÀÛÀº Åä¾ÐÀÌ ÀÛ¿ëÇÏ¿´À¸¸ç, ÀÌ¿¡ µû¶ó ÅͳζóÀÌ´×ÀÇ º¯Çü, ¸ð¸àÆ®, Àü´Ü·ÂÀÌ Áõ°¡ÇÏ¿´À½À» ¾Ë ¼ö ÀÖ¾ú´Ù.
Existing cut-and-cover tunnels are designed regardless of cut-slope under the assumption that the overburden weight of backfill soil acts on tunnel arch and the earth pressure at rest acts on tunnel walls. However, actual earth pressures acting on the tunnel lining depend on open-cut size composed of cut-slope and cut-width, and thus the tunnel lining shows a different structural behavior. This study investigated the effect of cut-slope on structural behavior of the cut-and-cover tunnel lining as follows; Firstly, a comprehensive numerical analysis method using FLAC2D code was used and verified by field measurements of tunnel profile. Secondly, based on the verified numerical analysis technique, earth pressure acting on the lining, and displacement and sectional force developed on the lining were estimated with various shapes of cut-slopes$30^{circ};, 456{circ},; 60^{circ},; and;75^{circ}%). Numerical analysis results indicate that the steeper cut-slope shows the more displacement and moment of the tunnel lining.
 
Ű¿öµå
Arching;Cut-and-cover tunnel;Cut-slope;Earth pressure;Interface;Lining;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.17, no.6, 2001³â, pp.245-255
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920879703)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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