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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.5, 2004³â, pp.127-134
RAP º¹ÇÕÁö¹ÝÀÇ ÁöÁö·Â ¹× ÆÄ±«°Åµ¿¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸
( An Experimental Study on the Bearing Capacity and Failure Behavior of Composite Ground Reinforced by RAP Method )
õº´½Ä; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸´Â RAP°ø¹ýÀÇ ±¸Á¶¹° ±âÃʷμ­ÀÇ ¾ÈÁ¤¼º ¹× »ç¿ë¼º È®º¸¸¦ À§ÇÑ ±âÃÊ¿¬±¸·Î½á, RAP°ø¹ýÀÌ Àû¿ëµÈ Áö¹ÝÀÇ ÁöÁö·Â ¹× ÆÄ±«°Åµ¿À» ½Ç³»¸ðÇüÅäÁ¶½ÃÇèÀ» ÅëÇÏ¿© °ËÅäÇÑ °ÍÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â RAP °ø¹ýÀ» ±¸Á¶¹° ±âÃʷμ­ÀÇ ÆÄ±«°Åµ¿À» ÆÄ¾ÇÇϱâ À§ÇÑ ½Ç³»¸ðÇü½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. »çÁúÅä Áö¹Ý¿¡¼­ »ó´ë¹Ðµµº°(60%, 70%, 90%), Á÷°æ º°(45mm, 60mm, 70mm)·Î RAP¸¦ ¼³Ä¡ÇÑ ÈÄ ±íÀ̺°(5cm, 10cm, 15cm, 20cm, 25cm, 30cm)·Î Åä¾Ð°è¸¦ °¢°¢ RAP¿¡ ÀÎÁ¢ÇÑ °÷°ú RAP Á߽ɿ¡¼­ 1.0D ¶³¾îÁø °÷¿¡ ¼³Ä¡ÇÏ¿© ÇÏÁßÀçÇÏ ½ÇÇèÀ» ¼öÇàÇÏ¿© RAPÀÇ ÁöÁö·Â ¹× ÆÄ±«°Åµ¿À» °ËÅäÇÏ¿´´Ù. ½ÇÇè °á°ú RAPÀÇ ÆÄ±«°Åµ¿Àº ±íÀÌ 5¡­10cm(1.0D¡­2.0D)¿¡¼­ ÃÖ´ë ȾÅä¾ÐÀ» ¹Þ¾Æ ÀϹÝÀûÀÎ RAPÀÇ ÆÄ±« ÇüÅÂÀÎ Bulging ÆÄ±«°¡ ¹ß»ýÇÏ´Â °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. ±×¸®°í RAP¿¡ ÇÏÁßÀ» °¡ÇÏ¿´À» °æ¿ì »ó´ë¹Ðµµ°¡ ³·À» °æ¿ì¿¡´Â RAPÀÇ Á÷°æº¯È­°¡ ÄÇÀ¸¸ç »ó´ë¹Ðµµ°¡ ³ôÀ» °æ¿ì¿¡´Â RAPÀÇ Á÷°æº¯È­°¡ ÀÛÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ±íÀ̺° Ⱦ¹æÇâ ÀÀ·Â ºÐÆ÷µµ´Â »óºÎ¿¡¼­ ȾÅä¾ÐÀÇ ¿µÇâÀÌ Å©°Ô ³ªÅ¸³µÀ¸¸ç ÇϺηΠ³»·Á°¥¼ö·Ï ÀÛ¾ÆÁö´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
Rammed Aggregate Pier (RAP) has extensive applicability as for a foundation of structures. In this study, bearing capacity of the reinforced ground by RAP and the failure behavior of RAP are investigated through experiments. RAPs with diameters of 45, 60, 70 mm were installed in sand, of which relative densities are 60, 70, 90%. Then, two columns of pressure gauges, near the RAPs and one diameter off from the center of piers, are installed 5, 10, 15, 20, 25, 30 cm from the surface of the ground. The test results show that maximum lateral earth pressure is observed near 5¡­10 cm (1.0¡­2.0D) from the surface, which indicates the occurrence of bulging failure type. In addition, deformation of RAP in radial direction increases with lower relative density of the ground. Furthermore, lateral stress distribution decreases with depth.
 
Ű¿öµå
Bearing capacity;CRP(Constant Rate of Penetration) test;Failure behavior;Rammed aggregate pier;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.5, 2004³â, pp.127-134
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922462164)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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