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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.8, 2008³â, pp.43-52
´Ùö±Ù ³×ÀÏÀÇ ÇöÀåÀι߽ÃÇè ¹× ¼öÄ¡ÇØ¼®
( Field Pull-out Test and Numerical Analysis for Multi-rebar Nail )
Àü»ó¼ö;±èµÎ¼·;Àå¾ç¿ø; ÀÎÁ¦´ëÇб³ Åä¸ñ°øÇаú;»óÇÕ E&C;ÀÎÁ¦´ëÇб³ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ´Üö±Ù ³×Àϰú ´Ùö±Ù ³×ÀÏÀÇ ÀÎÀå°­µµ¸¦ Á¶»çÇϱâ À§ÇØ ´Üö±Ù°ú ´Ùö±Ù ³×ÀÏÀÇ ±ØÇÑÀι߽ÃÇè°ú Å©¸®ÇÁ½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ö±Ù°ú ½Ã¸àÆ® ±×¶ó¿ìÆ®ÀÇ ºÎÂø·Â°ú ÀÎÀåÇÏÁß¿¡ ÀÇÇØ À¯¹ßµÈ ¸¶Âû·Â, ÇÏÁßÀüÀÌ Æ¯¼ºÀ» Á¶»çÇÏ¿´´Ù. ´Üö±Ù°ú ´Ùö±Ù ³×ÀÏÀÇ ÇöÀåÀι߽ÃÇè°ú À¯ÇÑÂ÷ºÐÇØ¼® ÇÁ·Î±×·¥ÀÇ ÇϳªÀÎ $FLAC^{2D}$¸¦ ÀÌ¿ëÇÏ¿© ¾òÀº °á°ú¸¦ ºÐ¼®ÇÏ°í ºñ±³ÇÏ¿´´Ù. ´Ùö±Ù ³×ÀÏÀÇ ÇöÀåÀι߽ÃÇè°á°ú ´Üö±Ù ³×ÀÏ¿¡ ºñÇØ ÀÎ¹ßÆÄ±«ÇÏÁßÀÌ Å©°í ÇÏÁßÀüÀ̰¡ Å­À» ¾Ë ¼ö ÀÖ´Ù.
In this study, the verification test and creep test for both a single-rebar nail and a multi-rebar nail are carried out to investigate a tensile strength for both nails. The adhesion effects between a rebar and a cement grout, a mobilized frictional force induced by pull-out load, and load transfer characteristics are examined. The results obtained from the field pull-out tests and from the numerical analysis using $FLAC^{2D}$ which is one of the programs developed based on the finite difference method are analyzed and compared for a single-rebar nail and a multi-rebar nail. The field pull-out test results for a multi-rebar nail relative to a single-rebar nail show that a tensile failure load is relatively large and the pull-out loads are well transferred to the ground in deep depth.
 
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Field pull-out tests;Finite difference analysis;Load transfer;Multi-rebar nail;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.8, 2008³â, pp.43-52
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200800557078750)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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