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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.6, 2003³â, pp.127-149
¼öÈ­¿­°ú °ÇÁ¶¼öÃà¿¡ ÀÇÇÑ 7Àϰ£ÀÇ ¿ÏÀü ÀÏü½Ä ±³·® ±³´ë ¸»¶Ò±âÃÊÀÇ È¾¹æÇ⠰ŵ¿
( Lateral Behavior of Abutment Piles in Full Integral Bridge During 7 Days in Response to Hydration Heat and Drying Shrinkage )
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º» ±³·®Àº ±³Ãà¹æÇâ¿¡ ´ëÇØ »ç°¢ 60µµÀÎ 90m 3°æ°£ ¿¬¼Ó ¿ÏÀü ÀÏü½Ä ±³´ë±³·®ÀÌ´Ù. ÀÌ ±³·®ÀÇ »óºÎ½½·¡ºê ÄÜÅ©¸®Æ® Ÿ¼³ÈÄ, 7Àϰ£ÀÇ ÄÜÅ©¸®Æ® ¾ç»ý¿¡ µû¸¥ H¸»¶ÒÀÇ ¼öÆò°Åµ¿À» ¾Ë¾Æº¸±â À§ÇÏ¿©, H¸»¶Ò Ãà¹æÇâÀ¸·Î ¸Å¼³Çü °æ»ç°è¿Í º¯Çü·ü°è¸¦ ¼³Ä¡ÇÏ¿© °èÃøÀ» ½Ç½ÃÇÏ¿´´Ù. À̶§ °èÃø °á°ú¸¦ ¼öÈ­¿­ ¹× °ÇÁ¶¼öÃà Àü¿ëÇÁ·Î±×·¥ÀÎ HACOMÀÇ ÇØ¼®°á°ú¿Í H¸»¶ÒÀÇ È¾¹æÇâ ºñ¼±Çü p-y ¸ðµ¨Çؼ® °Åµ¿¿¡ ºñ±³ÇÏ¿´´Ù. ±× °á°ú¿¡ ÀÇÇϸé, ½ÇÃøÇÑ H¸»¶ÒÀÇ ¼öÆòº¯À§´Â »óºÎ½½·¡ºê ÄÜÅ©¸®Æ®°¡ ¾ç»ýÇÔ¿¡ µû¶ó ¹ß»ýÇÏ´Â ¼öÈ­¿­°ú °ÇÁ¶¼öÃà¿¡ ¿µÇâÀ» ¹Þ¾Ò°í, ±× Å©±â´Â °¢°¢ 2.2mm, 1.4mmÀ̾ú´Ù. ¸»¶Ò Ãà¹æÇ× ¼öÆòº¯À§ÀÇ º¯°îÁ¡Àº ±³´ë ±âÃÊÀú¸é¿¡¼­ 1.3m À§Ä¡¿¡¼­ ¹ß»ýÇÏ¿´´Ù. ÀÌ´Â ÀÌ ±³·®ÀÇ ±³´ë¸»¶ÒÀº ¸»¶Ò¸Ó¸® °íÁ¤Á¶°ÇÀ¸·Î °Åµ¿ÇÏ´Â °ÍÀÌ ¾Æ´Ï¶ó ÀÌ¿Í ¸Å¿ì À¯»çÇÑ °Åµ¿À» º¸¿´´Ù. ±×¸®°í ½ÇÃøÇÑ ¸»¶ÒÀÇ ÈÚÀÀ·Â °Åµ¿Àº ¸»¶Ò¸Ó¸® ȸÀü±¸¼Ó°ú °°Àº °Åµ¿À» º¸ÀÌÁö ¾Ê°í, ¿¬Á÷¹æÇâÀÇ ÇÏÁßÀüÀÌ¿Í °°Àº °Åµ¿À» ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ ±³´ë¸»¶ÒÀÇ ºñ¼±Çü p-y ¸ðµ¨Çؼ®À¸·Î ±¸ÇÑ ÃÖ´ëÈÚÀÀ·Â ÁõºÐ·®ÀÇ Å©±â´Â ¾à 300(kgf/$ extrm{km}^2$)À̾ú°í, ±³´ë¸»¶ÒÀÇ °èÃø±â ºÎÂøÀ§Ä¡¿Í´Â ¹«°üÇÏ°Ô ½ÇÃøÇÑ °ªº¸´Ù ¾à 2¹è Å©°Ô ¹ß»ýÇÏ¿´´Ù. ±×¸®°í ¸»¶ÒÀÇ ºñ¼±Çü p-y ¸ðµ¨Çؼ®¿¡¼­ ¸»¶ÒÀÇ ¼öÆòÇÏÁß, ÃÖ´ë¼öÆò º¯À§, ÃÖ´ëÈÚÀÀ·Â, ÃÖ´ëÈÚ¸ð¸àÆ®´Â ÄÜÅ©¸®Æ® ¾ç»ý½Ã°£¿¡ µû¶ó ¸ðµÎ ¼±ÇüÀûÀÎ °Åµ¿À» º¸¿´´Ù.
The bridge tested was 3 spans 90m-long PSC beam concrete bridge with a stub-type abutment which had a skew of 60$^{circ}$ about the axis of bridge. A cement concrete was placed at the superstructural slab of the bridge. Inclinometers and straingauges were installed at piles as well. During 7 days-curing of superstructural slab, the pile behavior in response to hydration heat and drying shrinkage of the slab was monitored. Then monitored values were compared with the horizontal movement obtained from the HACOM program and the calculated lateral behavior obtained from the nonlinear p-y curves of pile. As a result, lateral behavior of H-piles by the field measurement occurred due to the influence of hydration heat and drying shrinkage obtained during curing of superstructural concrete. The lateral displacements by hydration heat and drying shrinkage were 2.2mmand 1.4mm respectively. It was observed as well that the inflection point of lateral displacement of pile was shown at 1.3m down from footing base. It means that the horizontal movement of stub abutment did not behave as the fixed head condition of a pile but behave as a similar condition. The measured bending stress did not show the same behavior as the fixed head condition of pile but showed a similar condition. The increment of maximum bending stress obtained from the nonlinear p-y curves of pile was about 300(kgf/$ extrm{km}^2$) and was 2 times larger than measured values regardless of installation places of straingauges. Meanwhile, lateral load, maximum lateral displacement, maximum bending stress and maximum bending moment of pile showed a linear behavior as curing of superstructural concrete slab.
 
Ű¿öµå
Full integral abutment bridge;Hydration heat and drying shrinkage;Lateral behavior;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.6, 2003³â, pp.127-149
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922147924)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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