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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.1, 2008³â, pp.71-80
±¤ÆøÀÎÀå½ÃÇèÀ» ÅëÇÑ Áö¿À±×¸®µåÀÇ ½Ã°£ÀÇÁ¸Àû º¯Çü °Åµ¿ °íÂû
( Time-dependent Deformation Charateristics of Geogrid Using Wide Width Tensile Test )
À¯Ãæ½Ä;ÀüÇÑ¿ë;±è¼±ºó; ¼º±Õ°ü´ëÇб³ °Ç¼³È¯°æ½Ã½ºÅÛ°øÇаú;ÀÎÇÏ´ëÇб³ ³ª³ë½Ã½ºÅÛ°øÇаú;¼º±Õ°ü´ëÇб³ °Ç¼³È¯°æ½Ã½ºÅÛ°øÇаú;
 
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º» ³í¹®¿¡¼­´Â º¸°­Åä ±¸Á¶¹°¿¡ º¸°­Àç·Î Àû¿ëµÇ´Â Áö¿À±×¸®µåÀÇ ½Ã°£ ÀÇÁ¸Àû º¯Çü°Åµ¿ Ư¼º¿¡ ´ëÇÑ ±¤Æø ÀÎÀå½ÃÇè °á°ú¸¦ Á¦½ÃÇÏ¿´´Ù. ¸ÕÀú, ´Ù¾çÇÑ º¸°­ÀçÀÇ Á¾·ù¿¡ ´ëÇØ ÀÎÀå¼Óµµ¿¡ µû¸¥ ÆÄ´Ü°­µµ ¹× °­¼ºÀÇ º¯È­¿¡ ´ëÇØ ¾Ë¾Æº¸¾Ò´Ù. ¶ÇÇÑ º¸°­Åä ±¸Á¶¹°ÀÌ »ç¿ë¿¬ÇÑ µ¿¾È ¹Þ°ÔµÉ ´Ù¾çÇÑ ÇÏÁß Á¶°Ç, Áï Áö¼ÓÇÏÁß ¹× ¹Ýº¹ÇÏÁßÀ» ÀÛ¿ë½Ãų ¼ö ÀÖ´Â Àåºñ¸¦ Ư¼ö Á¦ÀÛÇÏ¿© Áö¿À±×¸®µåÀÇ ½Ã°£ÀÇÁ¸Àû º¯Çü°Åµ¿À» ºÐ¼®ÇÏ¿´´Ù. ±× °á°ú Áö¼ÓÇÏÁß ¹× ¹Ýº¹ÇÏÁß ÀÛ¿ë½Ã ÀÜ·ùº¯ÇüÀº º¸°­ÀçÀÇ Á¡¼º(viscous) Ư¼ºÀÇ ÇüÅ·μ­ ½Ö°î¼± Ư¼º °î¼±À¸·Î Àß ¸ð»çµÇ´Â °ÍÀ¸·Î ºÐ¼®µÇ¾úÀ¸¸ç ÀÌ·¯ÇÑ ÀÜ·ùº¯ÇüÀº ½Ã°£ÀÇÁ¸Àû Á¡¼º°Åµ¿ÀÇ Ãø¸é¿¡¼­ ´Ù·ç¾î¾ß ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
This paper presents the reusults of wide width tensile tests under sustained and cyclic loads with vairous loading rate on geogrids. A seires of modified wide width tensile tests were conducted to investigate the effect of tensile strain rate on the deformation behavior of the geogrids. In addition, residual deformation characteristics of a geogrid under sustained or cyclic tests were also investigated. The results indicated that the residual deformation of a geogrid is strongly related to the viscous behavior of the geogrid, and the residual deformation can be well described by a hyperbolic curve. Also revealed was that residual deformation of a geogrid when subject to sustained or cyclic load should be described with the framework of viscous behavior.
 
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Cyclic loading;Geosynthetics;Geosynthetic-reinforced retaining wall;Sustained loading;Viscous deformation;Wide width tensile test;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.1, 2008³â, pp.71-80
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200810737054364)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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