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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.4, 2007³â, pp.25-32
½ºÆ®·¹ÀÎ °ÔÀÌÁö¸¦ ÀÌ¿ëÇÑ ºÎÁ÷Æ÷ÀÇ º¯Çü°Åµ¿ °èÃø¿¡ °üÇÑ ¿¬±¸
( A Study of the Measurement of Nonwoven Geotextile Deformation with Strain Gauges )
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µµ·Î ¼ºÅäÀç ¹× ±¸Á¶¹° µÚä¿òÀç·Î Á¡¼ºÅä Ȱ¿ëÀÇ Çʿ伺ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó º¸°­Àç·Î ¹è¼ö¼ºÀ» °®°í ÀÖ´Â Åä¸ñ¼¶À¯ ºÎÁ÷Æ÷°¡ Á¡Â÷ ÁÖ¸ñÀ» ¹Þ°í ÀÖÀ¸³ª, ÇöÀå º¸°­Å䱸Á¶¹°¿¡¼­ ºÎÁ÷Æ÷ÀÇ º¯Çü°Åµ¿À» ºÐ¼®ÇÑ »ç·Ê´Â °ÅÀÇ ¾øÀ¸¸ç, ±× ÀÌÀ¯´Â ºÎÁ÷Æ÷ÀÇ °æ¿ì Áö¿À±×¸®µå³ª Á÷Æ÷¿¡ ºñÇØ °­¼ºÀÌ ÀÛ°í º¯Çü·üÀÌ Å©¸ç ½ºÆ®·¹ÀÎ °ÔÀÌÁö¸¦ ÀÌ¿ëÇÑ °èÃøÀÌ °ï¶õÇϱ⠶§¹®ÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ½ºÆ®·¹ÀÎ °ÔÀÌÁö¸¦ ÀÌ¿ëÇÏ¿© ºÎÁ÷Æ÷ÀÇ º¯Çü°Åµ¿À» º¸´Ù °£ÆíÇÏ°Ô °èÃøÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» Á¦¾ÈÇÏ¿´°í, À̸¦ ½Ç³»½ÃÇè°ú 2°³ÀÇ ½Ç¹°º¸°­Åä¿Ëº®¿¡ Àû¿ëÇÏ¿© À¯¿ë¼º ¿©ºÎ¸¦ °ËÅäÇÏ¿´´Ù. ±¸¼Ó¾Ð 70kPa ÇÏ¿¡¼­ ½Ç½ÃÇÑ ½Ç³» ±¤ÆøÀÎÀå½ÃÇèÀÇ °æ¿ì ½ºÆ®·¹ÀÎ °ÔÀÌÁö¿¡ ÀÇÇØ °èÃøµÈ ºÎÁ÷Æ÷ÀÇ ±¹ºÎº¯ÇüÀº LVDT¿¡ ÀÇÇØ °èÃøµÈ Àüüº¯Çü°ú À¯»çÇÑ ÆÐÅÏÀ¸·Î °Åµ¿ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ½Ç¹°º¸°­Åä¿Ëº®¿¡¼­ ºÎÁ÷Æ÷ÀÇ º¯Çü¹üÀ§´Â Á÷Æ÷³ª Áö¿À±×¸®µåº¸´Ù Å©°Ô ³ªÅ¸³ª³ª, ÀÌµé º¸°­Àç¿Í º¯Çü ÆÐÅÏÀÌ À¯»çÇϰí, 16°³¿ù µ¿¾È Á¤»óÀûÀ¸·Î ÀÛµ¿ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. µû¶ó¼­, º» ¿¬±¸¿¡¼­ Á¦¾ÈÇÑ ½ºÆ®·¹ÀÎ °ÔÀÌÁö¿¡ ÀÇÇÑ ºÎÁ÷Æ÷ÀÇ º¯Çü°èÃø¹æ¹ýÀº ¸Å¿ì À¯¿ëÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Because of the increasing use of clayey soil as the backfill in reinfurced soil structures and embankments, nonwoven geotextiles of drain capability have been receiving much attention. However, there are few studies on the deformation behavior analysis of nonwoven geotextiles in reinforced soil structures in the site because nonwoven geotextiles which have low tensile stiffness and higher deformability than geogrids and woven geotextiles, are difficult to measure their deformation by using strain gauges. In this study, it was suggested that a new and more convenient method could measure the deformation behaviour of nonwoven geotextile using a strain gauge and examine the availability of the method by conducting laboratory tests and applying to two geosynthetics reinforced soil (GRS) walls in the site. The result of wide-width tensile test conducted under confining pressure of 70 kPa shows that the local deformation of nonwoven geotextile to be measured with strain gauges has a similar pattern to the total deformation measured with LVDT. In the GRS walls, nonwoven geotextile shows a larger deformation range than the woven geotextile and geogrid. However, the deformation patterns of these three reinforcement materials are similar. The function of strain gauges attached to nonwoven geotextile in the walls works normally for 16 months. Therefore, the method proposed in this study for measuring nonwoven geotextile deformation using a strain gauge has proved useful.
 
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Geosynthetics reinforced soil wall;Nonwoven geotextile;Reinforced soil;Strain;Strain gauge;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.4, 2007³â, pp.25-32
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200718411577227)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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