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Çѱ¹µµ·ÎÇÐȸ / v.13, no.3, 2011³â, pp.7-14
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ȯ°æÇÏÁß¿¡ ÀÇÇÑ ±³·® ÇÁ¸®½ºÆ®·¹½º Á¢¼Ó½½·¡ÇÁÀÇ Äøµ °Åµ¿ ¼öÄ¡ ÇØ¼®Àû ºÐ¼®
( Numerical Analysis of Curling Behavior of Prestressed Approach Slab Subjected to Environmental Loads ) |
| ¹ÚÈñ¹ü;¾öÀμ·;±è¼º¹Î;À̼®±Ù; °æÈñ´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹µµ·Î°ø»ç¼öµµ±Ç»ç¾÷´Ü;°æÈñ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;°æÈñ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| º» ¿¬±¸´Â ÇÁ¸®½ºÆ®·¹½º Á¢¼Ó½½·¡ºê(PTAS: Post-Tensioned Approach Slab)°¡ ȯ°æÇÏÁßÀ» ¹Þ¾Æ ÄøµÇÒ ¶§ÀÇ °Åµ¿À» ¼öÄ¡ÇØ¼®À» ÅëÇØ ÀûÀýÈ÷ ºÐ¼®Çϱâ À§ÇÏ¿© ¼öÇàµÇ¾ú´Ù. PTASÀÇ ÇÑÂÊ ´ÜºÎ°¡ ±³´ë¿¡ ÈùÁö·Î ¿¬°áµÇ´Â ºÎºÐÀ» ÇØ¼® ¸ðÇü¿¡ ÀûÇÕÇÏ°Ô Æ÷ÇÔ½Ãų ¼ö ÀÖ´Â ¹æ¹ýÀ» ¸¶·ÃÇÏ¿´À¸¸ç, Á¢¼Ó½½·¡ºêÀÇ ÇåÄ¡ ºÎºÐÀ» »èÁ¦ÇÑ ´Ü¼ø Çü»óÀÇ Á¢¼Ó½½·¡ºê ¸ðµ¨ÀÇ »ç¿ë¼ºµµ ºÐ¼®ÇÏ¿´´Ù. °³¹ßÇÑ ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ±³´ë µÚä¿òºÎ ħÇÏ¿¡ ÀÇÇÑ Á¢¼Ó½½·¡ºêÀÇ Äøµ ÀÀ·Â Ư¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ¿¬±¸ °á°ú, PTASÀÇ ´Ü¼øÈ ÈùÁö¸¦ Æ÷ÇÔÇÑ ´Ü¼ø Çü»ó ¸ðµ¨Àº ½ÇÁ¦ Çü»ó ¸ðµ¨ÀÇ ÃÖ´ëÀÎÀåÀÀ·ÂÀ» »êÃâÇϱ⿡ ÀûÇÕÇÑ °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ Äþ÷½Ã¿¡´Â ÇϺÎÁö¹Ý ħÇϰ¡ ¾ø´Â PTAS¿¡¼ ÃÖ´ëÀÎÀåÀÀ·ÂÀÌ µµÃâµÇ¾úÀ¸¸ç, ÄÃ´Ù¿î ½Ã¿¡´Â ÇϺÎÁö¹Ý ħÇϰ¡ ÁøÇàµÈ PTAS¿¡¼ ÃÖ´ëÀÎÀåÀÀ·ÂÀÌ ¹ß»ýÇϹǷΠÀÌ·¯ÇÑ Äøµ ÀÀ·ÂÀ» °í·ÁÇÏ¿© ¼³°è¸¦ ¼öÇàÇÏ´Â °ÍÀÌ ÀûÀýÇÒ °ÍÀ¸·Î ºÐ¼®µÇ¾ú´Ù. |
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| The numerical analyses were performed to investigate the curling behavior of the post-tensioned prestressed concrete approach slab (PTAS) under environmental loads. A technique to include properly the boundary conditions of one end of PTAS that was connected to the bridge abutment using hinges was proposed for the numerical model. The applicability of a simplified model not having hunches was also investigated. By using the developed models, the curling behavior of PTAS was analyzed when the foundation settlement occurred. The analysis results showed that the maximum tensile stress obtained from the simplified model involving a simplified hinge connection was very closed to that obtained from a rigorous model. When the slab curled up, the maximum tensile stress occurred in the model including no foundation settlement, but when the slab curled down, the maximum stress occurred in the model including partial settlement of the foundation. Therefore, the design of PTAS should be performed considering those maximum tensile stresses. |
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| Ű¿öµå |
| Á¢¼Ó½½·¡ºê;ÇÁ¸®½ºÆ®·¹½º;ȯ°æÇÏÁß;Äøµ;Áö¹ÝħÇÏ;approach slab prestress;environmental load;curling;foundation settlement; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.13, no.3, 2011³â, pp.7-14
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201131263125177)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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