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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.2, 1999³â, pp.3-16
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°è·ù½Ä µ¹Çɱ¸Á¶¹°¿¡ ´ëÇÑ Áö¹Ý-¸»¶Ò°èÀÇ ºñ¼±Çü Áö¹Ý¹Ý·Â ÇØ¼®
( Nonlinear Subgrade Reaction Analysis of the Soil-Pile System for Mooring Dolphin Structures ) |
| ¿À¼¼ºØ;ÀÌÁøÇÐ;ÀÌ»ó¼ø;±èµ¿¼ö;Á¤Å¿µ; ¿µ³²´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;Çѱ¹±â°è¿¬±¸¿ø BMP»ç¾÷;
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| ÇöÀç ±¹³»¿¡¼´Â ºÎÀ¯½Ä ±¸Á¶¹°À» ÀÌ¿ëÇÏ¿© ¼Ò°¢·Î ¹× ´ã¼öÈ °øÀåÀ» ÇØ»ó¿¡ ÃàÁ¶ÇÏ´Â BMP(Barge Mounted Plant) ½Ã½ºÅÛ¿¡ °üÇÑ ¿¬±¸¸¦ ¼öÇàÁß¿¡ ÀÖ´Ù(Çѱ¹±â°è¿¬±¸¿ø 1997). º» ³í¹®¿¡¼´Â ÀÌ·¯ÇÑ BMPÀÇ °è·ù µ¹ÇÉ(mooring dolphin) ±¸Á¶¹°ÇϺÎÀÇ ¸»¶Ò±âÃÊÀÇ °Åµ¿À» ¸ðµ¨ÇÏ´Â ±â¹ý¿¡ °üÇÏ¿© ´Ù·ç¾ú´Ù. Áö¹Ý-¸»¶Ò°èÀÇ ÃàÇÏÁß ¹× ȾÇÏÁß¿¡ ´ëÇÑ °Åµ¿Àº Áö¹ÝÀ» ºñ¼±Çü ½ºÇÁ¸µÀ¸·Î ¸ðµ¨ÇÏ°í ¸»¶ÒÀ» ÀÏÃàºÎÀç ¹× º¸·Î ¸ðµ¨ÇÏ¿© À¯ÇÑÂ÷ºÐÀûÀ¸·Î ÇØ¸¦ ±¸ÇÏ´Â ºñ¼±Çü Áö¹Ý¹Ý·ÂÇØ¼®À» ¼öÇàÇÑ´Ù. ÀÌ·¯ÇÑ ¸»¶ÒµÎºÎ¿¡¼ÀÇ ÇÏÁß-º¯À§°ü°è·ÎºÎÅÍ Áö¹Ý-¸»¶Ò°èÀÇ µî°¡°¼ºÀ» »êÁ¤ÇÒ ¼ö ÀÖ´Ù. µû¶ó¼ º» ¿¬±¸¿¡¼´Â °ÅÁ¦µµ ÁÖº¯ ÇØ¿ªÀ» ´ë»óÀ¸·Î Áö¹ÝÁ¶»ç¸¦ ¼öÇàÇÏ¿´°í À̸¦ Åä´ë·Î Áö¹ÝÀÇ ±íÀÌ¿¡ µû¸¥ Ãà¹æÇâ ¹× È¾¹æÇâ ÇÏÁßÀüÀÌ °ü°è¸¦ µµÃâÇÏ¿´´Ù. ±×¸®°í µ¹ÇÉÇϺÎÀÇ ¸»¶Ò¿¡ ´ëÇÏ¿© ÃàÇÏÁß ¹× ȾÇÏÁß¿¡ ´ëÇÑ Áö¹Ý¹Ý·ÂÇØ¼®À» ¼öÇàÇÏ¿´´Ù. ÀÌ·¯ÇÑ ÇØ¼®°úÁ¤À» ÅëÇÏ¿© ´ë»óÁö¿ª¿¡ ÀûÇÕÇÑ ¸»¶ÒÀÇ °üÀÔ±íÀÌ ¹× ´Ü¸éÀ» ÇÕ¸®ÀûÀ¸·Î »êÁ¤ÇÒ ¼ö ÀÖ¾ú´Ù. °á±¹ ¸»¶ÒµÎºÎ¿¡¼ÀÇ ÇÏÁß-º¯À§°ü°è·ÎºÎÅÍ Áö¹Ý-¸»¶Ò°èÀÇ °¼ºÀ» ¸ðµ¨ÇÔÀ¸·Î½á, Áö¹ÝÁ¶°ÇÀ» °í·ÁÇÏ¿© µ¹Çɱ¸Á¶¹°ÀÇ µ¿ÀûÇØ¼®À» ÇÕ¸®ÀûÀ¸·Î ¼öÇàÇÒ ¼ö ÀÖ¾ú´Ù. ÇØ¼®°á°ú Áö¹Ý-¸»¶Ò°èÀÇ °¼ºÀ» °í·ÁÇÒ °æ¿ì¿¡´Â °Ã¼·Î °í·ÁÇÑ °æ¿ì¿¡ ºñÇÏ¿© º¯À§ ÁøÆøÀÌ »ó´çÈ÷ Å©°Ô ³ªÅ¸³µ´Ù. ±×¸®°í µ¹ÇÉÀÇ ÄÉÀÌ½Ì »óºÎÀÇ ¸ð¸àÆ®°¡ ´õ Å©°Ô ³ªÅ¸³ª°í ÇØÀúÁöÇ¥ ¸»¶ÒµÎºÎ¿¡ Àü´ÞµÇ´Â ¸ð¸àÆ®´Â ´õ ÀÛ°Ô ³ªÅ¸³²À» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| The objective of BMP( Barge Mounted Plant) project is to construct plants on mooring floating structures at sea. To analyze the pile behavior under mooring dolphins, generally, axial or lateral behavior of soil-pile system is evaluated by using a nonlinear subgrade reaction method which models the pile as a structural element and the soil as series of nonlinear springs along the depth. As a result, load-displacement curves at pile head can be solved by finite difference method and the equivalent stiffness of bottom boundaries of dolphin structure is evaluated. In this study off-shore site investigation was performed on the marine area of Koje Island and axial and lateral load transfer curves of the ground were modeled with depth. The subgrade reaction analysis was performed for piles under axial or lateral loadings, and the required penetration depth and section of the pile were determined. Subsequently, the spring boundaries under the dolphin structure could be modeled from the calculated load-displacement curve and then the dynamic response of the dolphin structure was analyzed reasonably by considering ground conditions. The analysis considering the stiffness of the soil-pile system has resulted in larger displacement amplitudes than those for rigid foundations. Furthermore, moment distributions of the casing were dependent on the soil-pile system so that deformable foundation induces the larger moment of top section of casing and the smaller moment of pile head. |
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| Ű¿öµå |
| Mooring dolphin;Subgrade reaction analysis;Load transfer;Pile foundation;Drilled shaft;Dynamic response; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.2, 1999³â, pp.3-16
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749009)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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