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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.8, 2006³â, pp.77-88
$P-{Delta}$ È¿°ú¸¦ °í·ÁÇÑ Pile-Bent ±¸Á¶¹°ÀÇ ¼öÆò°Åµ¿ ¿¬±¸
( A Study on the Lateral Behavior of Pile-Bent Structures with $P-{Delta}$ Effect )
Á¤»ó¼¶;°ûµ¿¿Á;¾È»ó¿ë;ÀÌÁرÔ; ¿¬¼¼´ëÇб³ Åä¸ñ°øÇаú;Çö´ë»ê¾÷°³¹ß(ÁÖ) Åä¸ñ»ç¾÷º»ºÎ;(ÁÖ)´ë¿ì¿£Áö´Ï¾î¸µ öµµ»ç¾÷ºÎ;¿¬¼¼´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ¸»¶Ò-Áö¹ÝÀÇ »óÈ£ÀÛ¿ëÀ» °í·ÁÇÑ Pile-Bent ±¸Á¶¹°ÀÇ ¼öÆòÇÏÁß ÇØ¼®±â¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. ƯÈ÷, ¼öÆòÇÏÁßÀÌ ÀÛ¿ëÇÏ´Â Pile-Bent ±¸Á¶¹°ÀÇ Æ¯¼ºÀ» °í·ÁÇÑ Àç·áÀÇ Ç׺¹°Åµ¿°ú ±âÇÏÇÐÀû ºñ¼±Çü °Åµ¿ÀÎ $P-{Delta}$ È¿°ú¸¦ ÇØ¼®±â¹ý¿¡ µµÀÔÇÏ¿´´Ù. °³¹ßÇÑ ÇØ¼®±â¹ý»óÀÇ ÇöÀ埼³ ¸»¶ÒÀº º¸-±âµÕ ¸ðµ¨À» Àû¿ëÇÏ¿´À¸¸ç Áö¹ÝÀº ºñ¼±Çü ÇÏÁßÀüÀÌ ÇÔ¼ö¸¦ ÀÌ¿ëÇÏ¿´´Ù. º» ¿¬±¸°á°ú, °­ÇϺΠÀÏüÇüÀÎ Pile-Bent ±¸Á¶¹°ÀÇ °æ¿ì ÇØ¼®¹æ¹ý(Àç·áÀÇ Åº¼º ¶Ç´Â ºñź¼º)¿¡ µû¶ó ¼öÆòº¯À§ÀÇ Â÷°¡ Å©°Ô ¹ß»ýÇÏ¿´´Ù. Àç·áÀÇ Ç׺¹°Åµ¿¸¸ °í·ÁÇÒ °æ¿ì ÃÖ´ë ÈÚ ¸ð¸àÆ®($M_{max}$)´Â ÁöÇ¥ ¾Æ·¡ÀÇ ¾à 3.5D(D´Â ¸»¶ÒÁ÷°æ) ±íÀÌ¿¡¼­ ¹ß»ýµÇ¾úÀ¸¸ç, Àç·áÀÇ Ç׺¹°Åµ¿°ú $P-{Delta}$ È¿°ú¸¦ ¸ðµÎ °í·ÁÇÒ °æ¿ì $M_{max}$ÀÇ ÁöÁ¡ÀÌ ´Ù¼Ò »ó½ÂÇÏ¿© ÁöÇ¥ ¾Æ·¡ ¾à 1.5D ±íÀÌ¿¡¼­ ¹ß»ýÇÏ¿´´Ù. ¼¼Àåºñ¿¡ µû¸¥ Àç·áÀÇ Ç׺¹ ¹× $P-{Delta}$ È¿°ú´Â ´ÜÁÖÀÏ °æ¿ì¿¡´Â Àç·áÀÇ Ç׺¹°Åµ¿ÀÌ, ÀåÁÖÀÏ °æ¿ì¿¡´Â $P-{Delta}$ È¿°ú¿¡ ÀÇÇÑ ±âÇÏÇÐÀû ºñ¼±Çü °Åµ¿ÀÌ ¼öÆòº¯À§ÀÇ ÁÖ¿ä ¿µÇâÀÎÀÚÀÓÀ» È®ÀÎÇÏ¿´´Ù.
In this study, the lateral behavior of Pile-Bent structures subjected to lateral loading was evaluated by a load-transfer approach. An analytical method based on the Beam-Column model and nonlinear load transfer curve method was proposed to consider material non-linearity (elastic and yielding) and $P-{Delta}$ effect. Special attention was given to the lateral deflection of Pile-Bent structures depending on different soil properties, lateral load, slenderness ratio based on pier length and reinforcing effect of casing. From the results of the parametric study, it is shown that the increase of lateral displacement in a pile is much less favorable for an inelastic analysis than for an elastic analysis. It is found that for inelastic analysis, the maximum bending moment is located within a depth approximately 3.5D(D: pile diameter) below ground surface, but within 1.5D when $P-{Delta}$ effect is considered. It is also found that the magnitude and distribution of the lateral deflections and bending moments on a pile are highly influenced by the inelastic analysis and $P-{Delta}$ effect, let alone soil properties around an embedded pile.
 
Ű¿öµå
Inelastic analysis;Lateral deflection;$P-{Delta}$ effect;Pile-Bent structures;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.8, 2006³â, pp.77-88
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200634741580703)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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