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³í¹®¸í GFRP ¹× CFRP¸¦ Àû¿ëÇÑ º¸ÇàÀÚ¿ë ¹æÈ£¿ïŸ¸® ÁÖ¿ä ±¸Á¶ºÎÀÇ Â÷·® Ãæ°Ý ÀúÇ×¼º Æò°¡¸¦ À§ÇÑ ºñ¼±Çü Ãæµ¹ ÇØ¼® / Nonlinear Collision Analysis for Assessing the Vehicle Impact Resistance of Pedestrian Barriers using GFRP- and CFRP-applied Main Components
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¼ö·Ï»çÇ× º¹ÇսżÒÀ籸Á¶ÇÐȸ ³í¹®Áý, Vol.16 No.03 (2025-06)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(23) ÃÑÆäÀÌÁö(10)
ISSN 2093-5145
ÁÖÁ¦ºÐ·ù Àç·á / ±¸Á¶
ÁÖÁ¦¾î º¸ÇàÀÚ¿ë ¹æÈ£¿ïŸ¸®; GFRP; CFRP; ¼öÄ¡ÇØ¼®; ºñ¼±Çü Ãæµ¹ ÇØ¼® ; pedestrian protective fence; GFRP; CFRP; numerical analysis; nonlinear collision analysis
¿ä¾à1 º» ¿¬±¸´Â º¸ÇàÀÚ¿ë ¹æÈ£¿ïŸ¸®ÀÇ ±¸Á¶ Àç·á¸¦ FRP·Î ´ëüÇÏ´Â °æ¿ìÀÇ ±¸Á¶Àû Ÿ´ç¼ºÀ» µ¿Àû Á¶°Ç¿¡¼­ °ËÅäÇÏ¿´´Ù.
ABAQUS/Explicit ±â¹ÝÀÇ ºñ¼±Çü Ãæµ¹ ÇØ¼®À» ÅëÇØ FRP º¹ÇÕÀç ¹æÈ£¿ïŸ¸®ÀÇ Ãæµ¹ °Åµ¿À» ºÐ¼®ÇÏ¿´À¸¸ç, °¢ Àç·áÀÇ ºñ¼±Çü¼ºÀ» ¹Ý¿µÇÑ ÀûÀýÇÑ Àç·á ¸ðµ¨À» Àû¿ëÇÏ¿´´Ù. ÇØ¼® °á°ú, ±âÁ¸ °­Àç ¹æÈ£¿ïŸ¸®´Â ÃÖ´ë ¾à 167.6 mmÀÇ º¯À§°¡ ¹ß»ýÇÏ¿´À¸¸ç, ¹æÈ£±¸Á¶¹° ¹×±âµÕºÎÀÇ ¼Ò¼º ÆÄ±«°¡ °üÃԵǾú´Ù. Ãß°¡ÀûÀ¸·Î ÄÜÅ©¸®Æ® ¿¬¼®ÀÇ °íÁ¤ºÎ¿¡¼­´Â ±¤¹üÀ§ÇÑ ÆÄ±« ¾ç»óÀÌ È®ÀεǾúÀ¸¸ç, ÀÌ´Â Â÷·® Ãæµ¹½Ã ±¸Á¶Ã¼°¡ º¸ÇàÀÚ ÃøÀ¸·Î ºñ»êµÉ ¼ö ÀÖ´Â À§Ç輺À» ³»Æ÷ÇÑ´Ù. ÇÑÆí, CFRP ¹× GFRP ¹æÈ£¿ïŸ¸®´Â °­Àç ´ëºñ ÃÖ´ë º¯À§°¡ ¾à 7.1¡­ 9.6%±îÁö Áõ°¡ÇÏ¿´À¸¸ç, Hashin ÆÄ¼Õ ±âÁØ¿¡ µû¸¥ ÆÄ¼Õ Áö¼ö°¡ ÃÖ´ë 1,548.428·Î ³ªÅ¸³ª Ãʱ⠴ܰ迡¼­ ÆÄ¼ÕÀÌ ½ÃÀÛµÈ °ÍÀ¸·Î ºÐ¼®µÇ¾ú´Ù. ÀÌ·¯ÇÑ °á°ú´Â ´Ü¼øÇÑ Àç·á ġȯ¸¸À¸·Î´Â ÃæºÐÇÑ ±¸Á¶ ¾ÈÀü¼ºÀ» È®º¸Çϱ⠾î·Á¿òÀ» º¸¿©ÁÖ¸ç, FRP º¹ÇÕÀç¿¡ ÀûÇÕÇÑ ±¸Á¶ ¼³°è ¹×º¯¼ö ÃÖÀûÈ­¿¡ ´ëÇÑ Ãß°¡ ¿¬±¸°¡ ÇÊ¿äÇÔÀ» ½Ã»çÇÑ´Ù. ¾Æ¿ï·¯ ¼öÄ¡ÇØ¼® °á°úÀÇ ½Å·Ú¼º È®º¸¸¦ À§Çؼ­´Â ÇâÈÄ ½ÇÇèÀû °ËÁõÀÌ ÇʼöÀûÀÌ´Ù.
¿ä¾à2 This study investigates the structural feasibility of replacing the conventional materials used in pedestrian protective barriers with FRP composites under dynamic conditions. A nonlinear impact analysis was conducted using ABAQUS/Explicit by employing appropriate material models that represent the nonlinear behavior of each component. The analysis results showed that the conventional steel barrier exhibited a maximum displacement of approximately 167.6 mm, and that the barrier and support posts underwent plastic failure. Furthermore, extensive damage was observed at the anchorage of the concrete curb, indicating a risk of debris projection toward pedestrians during vehicular impact. Incidentally, the CFRP and GFRP barriers showed greater maximum displacement of approximately 7.1%?9.6% than the steel counterpart The Hashin failure indices reached up to 1,548.428, which suggests that damage initiation occurred at an early stage. These findings demonstrate that simple material substitution is insufficient to ensure structural safety and highlight that structural redesign and parameter optimization must be tailored to FRP composites. Moreover, experimental validation is needed to confirm the reliability of the numerical analysis results.
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DOI https://doi.org/10.11004/kosacs.2025.16.3.023