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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.2, 2004³â, pp.87-96
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ÇÁ¸®ÅÙ¼Ç ½îÀϳ×Àϸµ ½Ã½ºÅÛÀÇ °Åµ¿Æ¯¼º¿¡ °üÇÑ ½ÇÇèÀû °íÂû
( An Experimental Study on Behavior Characteristics of the Pretension Soil Nailing Systems ) |
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| ½îÀϳ×Àϸµ °ø¹ýÀº µµ½ÉÁö ÁöÇϱ¼Âø °ø»ç¿¡ ÀÖ¾î, ÁöÁ߸ż³¹°ÀÌ ÀÎÁ¢ÇÏ¿© Á¸ÀçÇϰųª ´ëÁö°æ°è¼± µîÀÇ Áؼö µî ½Ã°øÁ¶°Ç¿¡ µû¶ó¼ ¼³Ä¡³×ÀÏÀÇ ±æÀ̰¡ Á¦ÇѵǴ °æ¿ì ¹× ¿¬¾àÇÑ Áö¹ÝÁ¶°ÇÀ¸·Î ±¸¼ºµÈ »ç¸éÀ» º¸°ÇÒ °æ¿ì µî°ú °°Àº º®Ã¼º¯À§ ¹× ÁöǥħÇÏ ¾ïÁ¦¿Í ¾ÈÁ¤¼º Áõ´ë µîÀ» À§ÇÏ¿©, Áö¹Ý¾ÞÄ¿°ø¹ý(ground anchor system)°ú À¯»çÇÑ ÇÁ¸®ÅÙ¼Ç ¹æ½ÄÀÇ µµÀÔÀÌ ÇÊ¿äÇÑ ½ÇÁ¤ÀÌ´Ù. Áö¹Ý¾ÞÄ¿°ø¹ý°ú À¯»çÇÑ ÇÁ¸®ÅÙ¼Ç(pretension) ¹æ½ÄÀÇ ½îÀϳ×Àϸµ °ø¹ýÀ» µµÀÔÇÏ°Ô µÉ °æ¿ì, ÇÁ¸®ÅÙ¼Ç ÇÏÁß¿¡ ÀÇÇØ ³×ÀÏ µÎºÎ¿¡ ºÎÂøµÈ Áö¾ÐÆÇ µîÀº Àü¸éº®Ã¼¿¡ ¼öµ¿Åä¾ÐÀ» À¯¹ß½ÃŰ°Ô µÇ¹Ç·Î, ÀÏ¹Ý º¸Àϳ×Àϸµ º®Ã¼¿¡¼ ¹ß»ýÇÏ´Â ÁÖµ¿Åä¾ÐÀ» ¾î´À Á¤µµ °æ°¨½Ãų ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÇ¸ç, ¾Æ¿ï·¯ ´Ü°èº° ±¼Âø½Ã ¹ß»ýÇÏ´Â º¯À§¸¦ ÃÖ¼ÒÈÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ¿¹»óµÈ´Ù. µû¶ó¼, º» ¿¬±¸¿¡¼´Â ´Ü°èº° ±¼Âø½Ã À¯¹ßµÇ´Â º®Ã¼º¯À§ ¹× ħÇÏ·® µîÀ» ¾ïÁ¦Çϱâ À§ÇÑ ³ë·ÂÀÇ ÀÏȯÀ¸·Î, ÇÁ¸®ÅÙ¼Ç º¸Àϳ×Àϸµ ½Ã½ºÅÛÀ» °³¹ßÇÏ¿´´Ù. ¶ÇÇÑ º» ¿¬±¸¿¡¼´Â ½Ç³»¸ðÇü½ÇÇèÀ» Åä´ë·Î ÇÁ¸®ÅÙ¼Ç ½îÀϳ×Àϸµ º®Ã¼ÀÇ °Åµ¿Æ¯¼º ¹× ¹ßÈֵǴ Åä¾Ð µîÀ» Á¤·®ÀûÀ¸·Î ºÐ¼®ÇÏ¿© ÇÁ¸®ÅÙ¼Ç È¿°ú¿¡ µû¸¥ ½îÀϳ×Àϸµ º®Ã¼ÀÇ ÆÄ±«À¯ÇüÀ» ±Ô¸íÇÏ¿´´Ù. ¾Æ¿ï·¯, ÇÁ¸®ÅÙ¼Ç È¿°ú°¡ ½îÀϳ×Àϸµ º®Ã¼ ¾ÈÁ¤¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» °ËÅäÇÏ¿©, ÇâÈÄ ¿¹»óµÇ´Â ÇÁ¸®ÅÙ¼Ç È¿°ú¿¡ µû¸¥ ¼öÆòÅä¾Ð °¨¼Ò ¹× Áָ鸶Âû·Â Áõ°¡µîÀÇ Áö¹Ý-³×ÀÏ »óÈ£ÀÛ¿ëÀ» °í·ÁÇÑ ÇØ¼®±â¹ý°³¹ß¿¡ ÇÊ¿äÇÑ ±âÃÊÀûÀÎ ÀڷḦ Á¦½ÃÇϰíÀÚ ÇÑ´Ù. |
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| Application of the soil nailing method is continuously extending in maintaining stable excavations and slopes. However, ground anchor support system occasionally may not be used because of space limitations in urban excavation sites nearby the existing structures. In this case, soil nailing system with relatively short length of nails could be efficiently adopted as an alternative method. The general soil nailing support system, however, may result in excessive deformations particularly in an excavation zone of the existing weak subsoils. Pretensioning the soil nails then could play important roles to reduce deformations mainly in an upper part of the nailed-soil excavation system as well as to improve local stability. In this study, a newly modified soil nailing technology named as the PSN (Pretension Soil Nailing) is developed to reduce both facing displacements and ground surface settlements in top-down excavation process as well as to increase the global stability. Up to now, the PSN system has been investigated mainly focusing on an establishment of the design procedure. In the present study, laboratory model tests are carried out to investigate the failure mechanism and behavior characteristics of the PSN system. Various results of model tests are also analyzed to provide a fundamental basis for the efficient design. |
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| Ű¿öµå |
| Behavior characteristics;Global stability;Laboratory model tests;Pretension soil nailing system; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.2, 2004³â, pp.87-96
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922321564)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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