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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.10, 2007³â, pp.163-174
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±ÙÁ¢ ±¼Âø½Ã È븷À̺® ¹öÆÀ´ë ¼±ÇàÇÏÁß ÀçÇÏ¿¡ µû¸¥ ÅͳÎÀÇ °Åµ¿
( Behavior of Tunnel Due to Adjacent Ground Excavation with Pre-loading on Braced Wall ) |
| ±èÀÏ;ÀÌ»ó´ö; ¾ÆÁÖ´ëÇб³ ´ëÇпø °Ç¼³±³Åë°øÇаú;¾ÆÁÖ´ëÇб³ °ø°ú´ëÇРȯ°æ°Ç¼³±³Åë°øÇкÎ;
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| Å« ¼±ÇàÇÏÁßÀ» °¡ÇÒ ¼ö ÀÖ´Â »õ·Î¿î ¼±ÇàÇÏÁß ½Ã½ºÅÛÀ» °³¹ßÇÏ¿´À¸¸ç, À̸¦ Àû¿ëÇÏ¿© ±ÙÁ¢±¼Âø ½Ã ±âÁ¸ ÅͳÎÀÇ ¾ÈÁ¤¼ºÀ» È®º¸ÇÏ´Â ¹æ¾ÈÀ» ¿¬±¸ÇÏ¿´´Ù. È븷ÀÌ º®Ã¼ÀÇ ¼öÆòº¯À§°¡ °ÅÀÇ »ý±âÁö ¾Êµµ·Ï ¼³°èÃà·Â ÀÌ»óÀÇ ¼±ÇàÇÏÁßÀ» °¡ÇÏ¿´´Ù. À̸¦ À§ÇØ ¼±ÇàÇÏÁßÀ» °¡ÇÏÁö ¾Ê´Â °æ¿ì¿Í ¼±ÇàÇÏÁßÀ» °¡ÇÏ´Â °æ¿ì¿¡ ´ëÇØ Ãà¼ÒÀ² 1/10ÀÎ ½Ç ´ëÇü ½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ¼öÄ¡ÇØ¼®Àº ¼±ÇàÇÏÁßÀ» °¡ÇÏÁö ¾Ê´Â °æ¿ì¿Í, ¼±ÇàÇÏÁßÀ» ¼³°èÃà·ÂÀÇ 50%¿Í 100%¸¦ °¡ÇÏ´Â °æ¿ì, È븷ÀÌ º®Ã¼ º¯À§¸¦ °ÅÀÇ ¹ß»ý½ÃŰÁö ¾Ê´Â Å©±âÀÇ ¼±ÇàÇÏÁßÀ» °¡ÇÏ´Â °æ¿ì¿¡ ´ëÇØ À¯ÇÑ¿ä¼Ò¹ý(FEM) ÇÁ·Î±×·¥ÀÎ PLAXIS¸¦ »ç¿ëÇÏ¿© ¼öÇàÇÏ¿´´Ù. ±× °á°ú ¼±ÇàÇÏÁßÀ» ¼³°èÃà·Â ÀÌ»óÀ¸·Î Àû¿ë½ÃÄÑ È븷ÀÌ º®Ã¼º¯À§¸¦ ¾ïÁ¦½ÃÄ×À» ¶§ º®Ã¼ ¹è¸é Áö¹Ý¿¡ ÀÖ´Â ÅͳÎÀÇ ¾ÈÁ¤¼ºÀÌ Å©°Ô Çâ»óµÇ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. |
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| A New pre-loading system, through which a large pre-load could be charged was developed and applied to the braced wall in order to stabilize the adjacent tunnel. A pre-load larger than the designated axial force of bracing was imposed to prevent the horizontal displacement of the braced wall during the ground excavation. For this purpose, real scale model tests (1/10) were conducted, without and with pre-load on braced wall. And numerical analyses were performed for both the cases without and with pre-load, which were half (50%) and full (100%) respectively, and larger scale of the design axial farce of bracing. FEM program called PLAXIS was used for numerical analysis. As a result, it was found that the stability of the existing tunnel adjacent to the braced wall could be greatly enhanced when the horizontal displacement of braced wall was reduced by applying a pre-load, which was larger than the designated axial force of bracing. |
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| Ű¿öµå |
| Braced wall;Design axial force on bracing;Ground excavation;Large scale model test;Pre-loading; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.10, 2007³â, pp.163-174
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200703534284182)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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