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Çѱ¹Áö¹Ý°øÇÐȸ / v.12, no.2, 1996³â, pp.107-114
È­°­Åä¿Í º¸°­Àç °æ°è¸é¿¡¼­ÀÇ ¸¶Âû°è¼ö¿¡ °üÇÑ ¿¬±¸
( The Friction Coefficients of Interfaces between Weathered Granite Soil and Reinforcements )
±è»ó±Ô;ÀÌÀº¼ö; Á¤È¸¿ø, µ¿±¹´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Á¤È¸¿ø, µ¿±¹´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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´Ù¾çÇÑ ÀÔµµ ºÐÆ÷ÀÇ È­°­¾Ï dzȭÅä(È­°­Åä)¿¡ ´ëÇÏ¿© °¢Á¾ º¸°­Àç¿ÍÀÇ °æ°è¸é ¸¶Âû°è¼ö¸¦ ¾ò±â À§ÇÏ¿© Á÷Á¢Àü´Ü½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ÀÌ Á÷Á¢Àü´Ü½ÃÇè¿¡ »ç¿ëÇÑ º¸°­Àç´Â °­ÀçÆíÆò´ë»óº¸°­Àç (smooth steel strip)¿Í Ç¥¸éÀÌ °ÅÄ£ ÇÕ¼ºÇü Paraweb(friction tie) ¹× Æú¸®¿¡½ºÅÍ Á÷Æ÷(woven geotextile) µîÀÌ´Ù. ÇÔ¼öºñ º¯È­¿¡ µû¶ó È­°­ÅäÀÇ Àü´Ü°­µµ°¡ º¯È­ÇÏ´Â Á¡À» °¨¾ÈÇÏ¿© ÇöÀåÁ¶°Ç Áß ÃÖ¾ÇÀÇ »óÅÂÀÎ Æ÷È­µµ 100%·Î ÇÏ¿´À¸¸ç, Á÷Á¢Àü´Ü½ÃÇèÀÇ Æ¯¼º»ó ¹è¼öÁ¶°ÇÀ» ÀüÁ¦·Î ÇÏ¿´´Ù. ¶ÇÇÑ ÇöÀåÀÇ ´ÙÁü È¿°ú¿¡ ´ëÇÑ ¿µÇâÀ» °í·ÁÇÏ¿© ¼öÁ¤´ÙÁü 95% Á¶°ÇÀ» Àû¿ëÇÏ¿´´Ù. ±× °á°ú ¹Ì¼¼¸³ÀÚ ÇÔÀ¯À²ÀÌ Å¬ ¼ö·Ï ¸¶Âû°è¼öºñ°¡ Áõ°¡Çϸç, Ç¥¸éÀÌ °ÅÄ£ º¸°­Àç(friction tie and geoteztile)°¡ Ç¥¸éÀÌ ÆíÆòÇÑ °­Àç º¸°­Àç(smooth steel strip)¿¡ ºñÇÏ¿© ¸¶Âû°è¼öºñ°¡ ¸Å¿ì Å©°Ô ³ªÅ¸³²À» ¹ß°ßÇÏ¿´´Ù. ÀÌ¿¡ µû¶ó ¹è¼ö»óŸ¦ À¯ÁöÇϰí Ç¥¸éÀÌ °ÅÄ£ º¸°­À縦 »ç¿ëÇÑ´Ù¸é ¹Ì¼¼¸³ÀÚ ÇÔÀ¯·®ÀÌ 36% Á¤µµÀÎ È­°­ÅäÀÏÁö¶óµµ º¸°­Åä µÚä¿òÀç·á·Î Ȱ¿ëÀÌ °¡´ÉÇÏ´Ù.
A series of shear tests is performed to measure friction coefficients of the interface between different reinforcements and weathered granite soils. The reinforcements tested are smooth steel strip, Paraweb(friction tie) and geotextile with rough surface, while the weathered granite soils are composed of different, grain size distribution. Soils are compacted with the energy of 95% modified AASHTO and fully saturated before testing to simulate the worst site condition. Because of characteristics of the direct shear apparatus, shear strength is obtained in terms of drained condition. Test results show that the more fines the soils contain, the larger ratio of friction coefficient ($mu=frac{tan{delta}}{tan{Psi}}$) is obtained. Also the ratios are much higher for the Friction tie and the geotextile compared to the smooth steel strip. Those suggest that even weathered granite soils with 36% fines are possible to use as backfill of reinforced earth structures for the two reinforcements when a drainage system is provided.
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.12, no.2, 1996³â, pp.107-114
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920446476)
¾ð¾î : Çѱ¹¾î
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