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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.9, 2004³â, pp.133-144
±¼Áø¸é õ´Ü ¹× ¼öÆòº¸°­¿¡ µû¸¥ ±¼Áø¸é ÀüÈÄÀÇ Á¾¹æÇâ ¾ÆÄª Ư¼º
( Longitudinal Arching Characteristics Around the Face of a Soil-Tunnel with Crown and Face-Reinforcement )
±Ç¿À¿±;ÃÖ¿ë±â;ÀÌ»ó´ö;±è¿µ±Ù; °Ç±¹´ëÇб³ Åä¸ñ°øÇаú;´ë¿øÅäÁú(ÁÖ);¾ÆÁÖ´ëÇб³ ȯ°æµµ½Å°øÇкÎ;Çѱ¹Àü·Â°ø»ç ºÎ»êÀü·Â±¸°Ç¼³Ã³;
 
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NATMÅͳΠ½Ã°ø Áß °­°üÀ̳ª FRP°üÀ» ÀÌ¿ëÇÏ¿© ÅͳΠ¸·ÀåÀ» ¼±Çຸ°­ÇÏ´Â ¹æ¹ýÀº RPUMÀ̳ª UAM µîÀ¸·Î ¾Ë·ÁÁ® ÀÖÀ¸¸ç, ¾èÀº ÅͳΠ¹× ¿¬¾àÁö¹Ý³» ÅͳΠ±¼Âø ½Ã ±¼Áø¸éÀÇ ¾ÈÁ¤¼ºÀ» È®º¸ÇØÁְųª Áö¹Ý ħÇϸ¦ °¨¼Ò½ÃÄÑÁÖ´Â ¿ªÇÒÀ» ÇÑ´Ù. ƯÈ÷ ±¼ÁøÁö¹ÝÀÌ ¿¬¾àÇÏ¿© ÀÚ¸³ÀÌ ¾î·Á¿î °æ¿ì ÃÖ±Ù¿¡´Â ±¼Áø¸é õ´Ü»Ó ¾Æ´Ï¶ó ±¼Áø¸é ¼öÆòº¸°­À» ½Ç½ÃÇÏ¿© ±¼Âø¿¡ µû¸¥ ÅͳξÈÁ¤À» È®º¸ÇÏ°Ô µÈ´Ù. ÀϹÝÀûÀ¸·Î Åͳα¼ÂøÀÌ ÁøÇàµÊ¿¡ µû¶ó ±¼Áø¸é ÀüÈÄ¿¡´Â Á¾¹æÇâ ¾ÆÄªÇö»óÀÌ ¹ß»ýÇϸç ÀÌ´Â NATM ÅͳΠÁöº¸Àç ÀÛ¿ë¿ø¸®ÀÇ ±Ù°£ÀÌ µÈ´Ù. µû¶ó¼­ ÅͳΠõ´Ü°ú ±¼Áø¸é ¼öÆòº¸°­À» ½Ç½ÃÇÏ´Â °æ¿ìµµ ±¼Áø¿¡ µû¸¥ Á¾¹æÇâ ¾ÆÄªÀÇ °üÁ¡¿¡¼­ ÇØ¼®µÇ¾î¾ß Çϳª ÀÌ¿¡ ´ëÇÑ ¿¬±¸´Â ÇöÀç±îÁö °ÅÀÇ ¾ø´Â ½ÇÁ¤ÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â Åä»çÅͳΠ±¼Áø¸é¿¡ RPUM(õ´Üº¸°­)À̳ª ±¼Áø¸é ¼öÆòº¸°­ÀÌ ½Ç½ÃµÈ °æ¿ì, Á¾¹æÇâ ¾ÆÄªÆ¯¼ºÀ» 2Â÷¿ø ½Ç³»½ÃÇèÀ» ÅëÇØ »ìÆìº¸¾Ò´Ù. ½ÇÇè°á°ú, ¿¬Á÷Åä¾ÐÀÇ º¯È­¸¦ Åä´ë·Î ÇÑ Á¾¹æÇâ¾ÆÄª ¿µÇâ¹üÀ§´Â ¹«º¸°­ÀÇ °æ¿ì ±¼Áø¸é Àü${cdot}$ÈĹæÀ¸·Î °¢°¢ 2.5D¿Í 1.5D(D´Â ÅͳÎÁ÷°æ), õ´Üº¸°­ ¹× ¼öÆòº¸°­ÀÇ °æ¿ì 2.0D¿Í 1.5D, õ´Ü°ú ¼öÆòº¸°­ÀÌ µ¿½Ã¿¡ Àû¿ëµÈ °æ¿ì´Â 2.0D¿Í 1.0D±îÁö·Î ÃøÁ¤µÇ¾î ±¼Áø¸é º¸°­¿¡ µû¶ó ¾ÆÄªÀÇ ¿µÇâ¹üÀ§°¡ °¨¼ÒÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¹Ý¸é ¿¬Á÷Åä¾ÐÀÇ º¯È­·®Àº ±¼Áø¸é º¸°­¿¡ µû¶ó Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³ª ¿ªÇÐÀûÀ¸·Î õ´Ü ¹× ¼öÆòº¸°­Àç°¡ ÅͳÎÀÇ ¾ÈÁ¤¿¡ Áß¿äÇÑ ¿ªÇÒÀ» Çϰí ÀÖ´Â °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Pre-reinforcement ahead of a tunnel face using long steel or FRP (Fiberglass Reinforced Plastic) pipes in NATM(New Austrian Tunnelling Method), known as the RPUM(Reinforced Protective Umbrella Method) or UAM (Umbrella Arch Method), is the promising method to sustain the stability of a shallow tunnel face and reduce the ground settlements. In addition, horizontal reinforcing of the face is recently emphasized to improve the stability of the face. However, the characteristics on longitudinal arching around the face have not yet been established quantitatively with the RPUM (crown-reinforcing) and/or the face horizontal reinforcing. In this study, therefore, the behavior of cohesionless soil around the face reinforced by the reinforcing member representing the RPUM and horizontal reinforcing is investigated through two-dimensional laboratory model tests. A series of tests were carried out on various conditions by changing lengths and angles of the reinforcing members. Based on the vertical pressure around the face, the characteristics of longitudinal arching have been found for the case of the non-reinforced and the reinforced.
 
Ű¿öµå
Crown-reinforced;Face-reinforced;Horizontal pressure;Longitudinal arching;Settlement ratio;Vertical pressure;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.9, 2004³â, pp.133-144
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200430710459300)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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