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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.6, 2005³â, pp.19-30
±³·® ¸»¶Ò±âÃÊÀÇ Ä¸°­¼ºÀ» °í·ÁÇÑ ºñ¼±Çü 3Â÷¿ø ÇØ¼®
( Nonlinear Three-dimensional Analysis of Piled Piers Considering Coupled Cap Rigidities )
¿øÁø¿À;Á¤»ó¼¶; ¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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. º» ¿¬±¸¿¡¼­´Â Áö¹ÝÀÇ ºñ¼±ÇüÀ» °í·ÁÇÑ ÇϺα¸Á¶(¸»¶ÒÁö¹Ý¸»¶Òĸ)ÀÇ º¹ÀâÇÑ °Åµ¿°ú »óºÎ ÇǾÁ¶¿Í ¿¬°èµÈ »ó$cdot$ÇϺΠÀÏüȭ ÇØ¼®À» ¼öÇàÇÒ ¼ö ÀÖ´Â 3Â÷¿ø ÇØ¼®±â¹ýÀ» °³¹ßÇÏ¿´´Ù. FBPier 3.0°ú Croup 6.0ÀÇ Áß°£´Ü°è¿¡ ÇØ´çÇÏ´Â ÇØ¼®±â¹ýÀ¸·Î °¢ ÇØ¼®±â¹ýÀÇ ÀåÁ¡À» ÃëÇÏ°í ´ÜÁ¡À» º¸¿ÏÇÏ¿´´Ù. ±º¸»¶Ò±âÃÊ Áß ¸»¶ÒÀº ¸»¶ÒµÎºÎ °­¼ºÇà·ÄÀ» ÀÌ¿ëÇÏ¿© ¸ðµ¨¸µÇÏ¿´À¸¸ç, Áö¹ÝÀº ºñ¼±Çü ÇÏÁßÀüÀ̰(t-z, q-z, p-y°î¼±)À¸·Î ³ªÅ¸³»¾ú´Ù. ¸»¶ÒĸÀº 6°³ÀÇ ÀÚÀ¯µµ¸¦ °®´Â °³¼±µÈ 4ÀýÁ¡ Æò¸é½©(Flat shell)¿ä¼Ò·ç ±³°¢(ÇǾî)Àº 3Â÷¿ø º¸(Beam)¿ä¼Ò·Î ¸ðµ¨¸µ ÇÏ¿© »ó$cdot$ÇϺΠÀÏÃ¼ÇØ¼®ÀÌ °¡´ÉÇÏ°Ô ÇÏ¿´´Ù. ¸»¶ÒµÎºÎ °­¼ºÇà·ÄÀÇ ÇÏÁßÅ©±â¿¡ µû¸¥ ºñ¼±Çü¼ºÀ» °í·ÁÇϱâ À§ÇÏ¿© Á¡ÁõÇÏÁß-ÇÒ¼±°è¼ö¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. ±âÁ¸ÀÇ ºñ¼±Çü ÇØ¼®±â¹ý°úÀÇ ºñ±³$cdot$ºÐ¼® °á°ú, º» ÇØ¼®±â¹ýÀÌ ¸»¶ÒÀ» FBPier 5.0°ú ´Þ¸® ¸»¶ÒµÎºÎ °­¼ºÇà·ÄÀ» ÀÌ¿ëÇÏ¿© ¸ðµ¨¸µ ÇÏ¿´¾îµµ ¸»¶ÒµÎºÎ ¹× ±³°¢ »ó´Ü¿¡¼­ÀÇ º¯À§¸¦ ºñ±³Àû Á¤È®È÷ »êÁ¤ °¡´ÉÇÏ¿´´Ù.
A coupled three-dimensional pile group analysis method was developed by considering complex behavior of sub-structures (pile-soil-cap) which included soil nonlinearity and the behavior of super-structure (pier). As an intermediate analysis method between FBPier 3.0 and Group 0.0, it took advantages of each method. Among the components of a pile group, individual piles were modeled with stiffness matrices of pile heads and soils with nonlinear load-transfer curves (t-z, q-z and p-y curves). A pile cap was modeled with modified four-node flat shell elements and a pier with three-dimensional beam element, so that a unified analysis could be possible. A nonlinear analysis method was proposed in this study with a mixed incremental and iteration techniques. The proposed method for a pile group subjected to axial and lateral loads was compared with othe. analytical methods (i.e., Group 6.0 and FBPier 3.0). It was found that the proposed method could predict the complex behavior of a pile group well, even though piles were modelled simply in this study by using pile head stiffness matrices which were different from the method introduced in FBPier 3.0
 
Ű¿öµå
Flat shell element;Pile group;Pile head stiffness;Soil nonlinearity;Three-dimensional finite element analyses;Unified analysis;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.6, 2005³â, pp.19-30
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504840676091)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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