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Çѱ¹Áö¹Ý°øÇÐȸ / v.17, no.6, 2001³â, pp.135-148
±¸¼ÓÈ¿°ú¸¦ °í·ÁÇÑ Åä¸ñ¼¶À¯ÀÇ ÀιßÀúÇ×·Â Æò°¡±â¹ý
( Assessment Method of Geosynthetic Pullout Resistance Considering Soil Confinement Effect )
¹æÀ±°æ;ÀÌÁØ´ë;Àü¿µ±Ù; ´ë¿ø°úÇдëÇÐ Åä¸ñ°ú;¼¼¸í´ëÇб³ ´ëÇпø;¼¼¸í´ëÇб³ ´ëÇпø;
 
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º» ¿¬±¸¿¡¼­´Â, ÀÎÀå·Â°ú ÀÌ¿¡ ¼öÁ÷¹æÇâÀ¸·Î ÀÛ¿ëÇÏ´Â ¾ÐÃàÀ½·ÂÀ» µ¿½Ã¿¡ °í·ÁÇÑ Á÷±³À̹漺 ÇÕ¼ººÎÀçÀÇ ÀÎÀå·Â-º¯Çü·ü °ü°è½Ä(Bhagwan, Agarwal & Brouoan, 1990)À» ÀÀ¿ëÇÏ¿©, Åä¸ñ¼¶À¯ÀιßÀúÇ×·Â ¹× ÀÎÀå·Â¿¡ ¹ÌÄ¡´Â ±¸¼ÓÀÀ·ÂÀÇ ¿µÇâÀ» Á¤·®ÀûÀ¸·Î Æò°¡ÇÒ ¼ö ÀÖ´Â ±â¹ýÀ» Á¦½ÃÇÏ¿´´Ù. À̸¦ À§Çؼ­, ±¹³»¿¡¼­ ÆÇ¸ÅµÇ°í ÀÖ´Â ºÎÁ÷Æ÷, Á÷Æ÷, º¹ÇÕÆ÷ ¹× Áö¿À±×¸®µå µîÀÇ Åä¸ñ¼¶À¯¸¦ ´ë»óÀ¸·Î ±¸¼Ó½ÅÀå½ÃÇè(Confined Extension Test) ¹× ½Ç³»Àι߽ÃÇè(Laboratory Pull-out Test)À» ¼öÇàÇÏ¿´´Ù. ½ÃÇè°á°ú¸¦ Åä´ë·ÎÇÏ¿© ±¸¼ÓÀÀ·ÂÀÌ Åä¸ñ¼¶À¯ÀÇ ÀÎÀå·Â-º¯Çü·ü °Åµ¿¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿´°í, ±¸¼ÓÀÀ·Â¿¡ ÀÇÇÑ Åä¸ñ¼¶À¯ ÀÎÀå·Â ¹× ÀιßÀúÇ×·ÂÀÇ º¯È­¸¦ Á¤·®ÀûÀ¸·Î Æò°¡ÇÏ¿´´Ù. ºÐ¼®°á°ú, ±¸¼ÓÀÀ·ÂÀÇ Å©±â°¡ Áõ°¡ÇÒ¼ö·Ï Åä¸ñ¼¶À¯ÀÇ ÇÒ¼±°è¼ö°¡ ¶Ñ·ÇÀÌ Áõ°¡ÇÏ¿´À¸¸ç, º» ¿¬±¸ Á¦¾È¹æ¹ý¿¡ ÀÇÇÑ Åä¸ñ¼¶À¯-Èë »çÀÌÀÇ ¸¶ÂûÀúÇ×°¢ $delta; ¹×; º¸Á¤°è¼ö; a^2$°ªÀÌ ±âÁ¸ÀÇ ÀιßÀúÇ×·Â Æò°¡¹æ¹ý¿¡ ºñÇÏ¿© ´Ù¼Ò Å« °ªÀ» ³ªÅ¸³»¾î, ÀιßÀúÇ×·Â »êÁ¤½Ã Åä¸ñ¼¶À¯¿¡ °¡ÇØÁö´Â ±¸¼ÓÀ½·ÂÀÇ Å©±â¸¦ °í·ÁÇÏ´Â º» ¿¬±¸ Á¦½Ã¹æ¹ýÀÇ °æ¿ì¿¡ º¸´Ù Å« ÀιßÀúÇ×·ÂÀÌ ¾ò¾îÁüÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
In this study, an assessment method was proposed to evaluate the pullout resistance between geosynthetic and backill soil by using a stress-strain relationship of the orthotropic composite material subjected to both longitudinal and vertical loadings. For this analysis friction characteristics of geosynthetic-soil and stress-strain relationships subjected to soil confined pressure were investigated by performing the laboratory pullout tests for three types of geosynthetics and performing the confined extension tests far seven types of geosynthetics having geotextiles, composite geosynthetics and geogrids. A comparison was made between unconfined an confined moduli far each geosynthetic material to quantify the soil confinement effect on stress-strain properties. A comparison was also made between the relative increase of moduli at the same strain level among the seven geosynthetic materials to demonstrate the different responses of these geosynthetic materials under soil confinement. Based on the proposed procedure, it was shown that values of the increased tensile force are applicable fur the evaluation of friction strengths between five types of geosynthetics and sands in light of the soil confinement effect.
 
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Confined extension test;Friction characteristics;Geosynthetics;Orthotropic;Pullout test;Stress-strain relationship;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.17, no.6, 2001³â, pp.135-148
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920879557)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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