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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.2, 1999³â, pp.139-152
Ãæ°Ý¹ÝÇâ±â¹ýÀ» ÀÌ¿ëÇÑ ±íÀº ±âÃÊÀÇ °ÇÀüµµ Æò°¡(¼öÄ¡ÇØ¼®)
( Integrity Evaluation of Deep Foundations by Using Impact Echo Method(Numerical Study) )
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±Ù·¡¿¡ µé¾î ±¸Á¶¹°ÀÇ ´ëÇüÈ­¿¡ µû¶ó ÇöÀ埼³ ¸»¶ÒÀ» ÇϺΠ±¸Á¶¹°·Î¼­ ±¤¹üÀ§ÇÏ°Ô Àû¿ëÇϰí ÀÖ´Ù. ±×·¯³ª ÇöÀ埼³ ¸»¶Ò¿¡ °áÇÔÀÌ »ý±â¸é »óºÎ ÇÏÁß¿¡ ´ëÇÑ ÁöÁö·Â ÀúÇÏ¿Í ÇÔ²² ħÇÏ·®ÀÌ Áõ°¡ÇÏ°Ô µÇ¾î »óºÎ ±¸Á¶¹°¿¡ Ä¡¸íÀûÀÎ ¼Õ½ÇÀ» ÃÊ·¡ÇÒ ¼ö ÀÖ´Ù. µû¶ó¼­ ºñÆÄ±«½ÃÇè ±â¹ý¿¡ ÀÇÇÑ ÄÜÅ©¸®Æ® ¸»¶ÒÀÇ È¿°úÀûÀÎ °ÇÀüµµ Æò°¡±â¹ý °³¹ßÀÌ Áß¿äÇÏ°Ô ´ëµÎµÇ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ¼öÄ¡ÇØ¼®À» ÅëÇÏ¿© ÄÜÅ©¸®Æ® ¸»¶ÒÀÇ °ÇÀüµµ Æò°¡¿¡ ÀÌ¿ëµÇ´Â Ãæ°Ý¹ÝÇâ±â¹ýÀÇ Àû¿ë¼ºÀ» °ËÅäÇÏ¿´´Ù. 3Â÷¿ø Ãà´ëĪ À¯ÇÑ¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÏ¿© °ÇÀüÇÑ ¸»¶Ò°ú ÇöÀ埼³ ¸»¶ÒÀÇ ÀüÇüÀûÀÎ °áÇÔÀÎ º´¸ñ, °øµ¿, ºÒ·® ÄÜÅ©¸®Æ®¸¦ Æ÷ÇÔÇÏ´Â ¸»¶Ò, ±×¸®°í Áö¹Ý ¹× ¾Ï¹ÝÀ§¿¡ ³õÀÎ ¸»¶Ò¿¡ °üÇÑ ÇØ¼®À» ¼öÇàÇÏ¿´´Ù. ÇØ¼®°á°ú ÇöÀ埼³ ¸»¶Ò¿¡ Àû¿ëµÇ´Â Ãæ°Ý¹ÝÇâ±â¹ýÀÇ Àû¿ë¼º Æò°¡¿¡ À־ À¯ÇÑ¿ä¼Ò¹ýÀÌ È¿°úÀûÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
These days we broadly apply drilled shafts for deep foundations to build infrastructures. The defects of the deep foundations cause the decrease of their support load capacity and the increase of settlement, and the subsequent damage of the super-structures. In consequence, non-destructive testings techniques of concrete piles are important for their integrity evaluation. To improve understanding and reliable application of the impact echo method for the integrity evaluation of the drilled concrete piles, numerical studies of the impact response of concrete piles by using axi-symmetric three-dimensional finite element method are peformed for (a) sound piles: (b) piles containing necks, voids and layers of low-quality concrete: and (c) piles in soil and/or above rock. The results of these studies show that the finite element method is effective for evaluating the impact response of drilled concrete piles.
 
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Integrity evaluation;Deep foundation;Nondestructive testing;Impact-Echo method;Finite element method;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.2, 1999³â, pp.139-152
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749111)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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