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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.3, 2003³â, pp.5-13
¿ªÇؼ®¿¡ ÀÇÇÑ ½îÀϳ×Àϸµ º®Ã¼ ¹è¸éÁö¹ÝÀÇ °Åµ¿ ¿¬±¸
( Ground Behavior Behind Soil Nailed Wall by Feed Back Analysis )
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½îÀϳ×Àϸµ °ø¹ýÀº ÀÛ¾÷°ø°£ÀÇ È®º¸°¡ ¿ëÀÌÇÏ°í ³×ÀϱæÀ̰¡ ¾î½º¾ÞÄ¿º¸´Ù ºñ±³Àû ª¾Æ µµ½ÉÁö ÁöÇϱ¼Âø¿¡ ¸Å¿ì À̷οî ÀåÁ¡ÀÌ ÀÖ´Ù. ÀÌ °ø¹ýÀÌ µµÀÔµÈ ÀÌÈÄ ½îÀϳ×Àϸµ º®Ã¼ÀÇ °Åµ¿¿¡ °üÇÑ ¿¬±¸´Â ÅäÁ¶¿¡ ÀÇÇÑ ¸ðÇü½ÇÇè°ú ÀÌ·ÐÀû ¿¬±¸°¡ ÁøÇàµÇ°í ÀÖÁö¸¸ Áö¹ÝÁ¶°ÇÀÌ ´ÙÃþÅä·Î ±¸¼ºµÈ ÇöÀå¿¡ ´ëÇÑ ¿¬±¸´Â ¹ÌÈíÇÑ ½ÇÁ¤ÀÌ´Ù. º» ¿¬±¸´Â ±¹³» ´ÙÃþÅä Áö¹Ý¿¡ ½Ã°øµÈ ½îÀϳ×Àϸµ ÇöÀå¿¡¼­ ½Ã°øÁß ÃøÁ¤µÈ ¼öÆòº¯À§¸¦ Åä´ë·Î ÇÑ ¿ªÇؼ®Àû ¹æ¹ý¿¡ ÀÇÇØ ¹è¸éÁö¹ÝÀÇ À̿Ͽµ¿ª°Å¸®¿Í À̿Ͽµ¿ª°è¼ö¸¦ °íÂûÇÏ¿´´Ù. ¿¬±¸°á°ú¿¡ ÀÇÇÏ¸é ½îÀϳ×Àϸµ º®Ã¼ ¹è¸éÁö¹ÝÀÇ ÀÌ¿Ï ¿µ¿ª°Å¸®´Â ÃÖÁ¾±¼Âø±íÀÌÀÇ Áõ°¡¿¡ µû¶ó Áõ°¡ÇÔÀ» º¸¿´À¸¸ç, ±× ºñÀ²Àº ÃÖÁ¾±¼Âø±íÀÌÀÇ 94% Á¤µµ·Î ³ªÅ¸³µ´Ù. Åä»çÃþ°ú ¾ÏÃþÀÌ È¥ÇյǾî ÀÖ´Â ´ÙÃþÅä Áö¹Ý¿¡¼­ Åä»çÃþÀÇ ºñÀ²ÀÌ Å¬¼ö·Ï À̿Ͽµ¿ª°è¼öµµ Áõ°¡ÇÏ¿´À¸³ª, ¾à 1.05°ª¿¡¼­ ¼ö·ÅÇÏ´Â °æÇâÀ» ³ªÅ¸³Â´Ù. º®Ã¼ ÃÖ´ë¼öÆòº¯À§¿¡ ´ëÇÑ ÁöÇ¥¸é ÃÖ´ë¼öÁ÷º¯À§¿ÍÀÇ °ü°è´Â ¿ªÇؼ®°á°ú¿¡¼­ ÁöÇ¥¸é ÃÖ´ë¼öÁ÷º¯À§°¡ ÃÖ´ë¼öÆòº¯À§ÀÇ 80%ÀÌÇÏ·Î ³ªÅ¸³µÀ¸¸ç, Caspe¹æ¹ý¿¡ ÀÇÇÑ ÁöÇ¥¸é ÃÖ´ë¼öÁ÷º¯À§´Â ÃÖ´ë¼öÆòº¯À§ÀÇ 150~280%ÀÇ ¹üÀ§·Î ³ªÅ¸³ª ¿ªÇؼ®°á°úº¸´Ù´Â ¸Å¿ì Å« °ªÀ» ³ªÅ¸³» Caspe¹æ¹ýÀÌ ¸Å¿ì º¸¼öÀûÀÓÀ» È®ÀÎÇÏ¿´´Ù.
The soil nailing is one of the useful support-system in urban excavation because of the presence of other structures in the vicinity Since the soil nailing system was introduced, model experiments and theoretical studies have been performed to investigate behavior of soil nailed wall. However, there are few data in the case of multi-layered soil strata just like Seoul Metropolitan area in Korea. The feed back analyses are carried out using the measured wall displacement data for soil nailing construction sites with multi-layered strata in order to analyze the distance and the coefficients of extension zone of ground behind soil nailed wall. As a result, the distance of extension zone increased with increasing of the final excavation depth and the ratio of the distance to the final excavation depth was shown to be about 94% of the final excavation depth. Also, the coefficients of extension zone increased with enlargement of soil layer thickness and converged into constant value of 1.05. On the other hand, the maximum vertical displacements by the feed back analysis and Caspe's method were shown to be approximately 80%, 150~280% of the maximum horizontal displacement respectively.
 
Ű¿öµå
Displacement;Etenxion zone;Excavation;Feed back analysis;Measurement;Multi-layer;Soil nailing;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.3, 2003³â, pp.5-13
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921763491)
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