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±â»ç¸í ÄÜÅ©¸®Æ®ÃæÀü °­°ü ÇÕ¼ºº¸ÀÇ °è¸é°Åµ¿ / Interface Behavior of Concrete Infilled Steel Tube Composite Beam
ÀúÀÚ¸í ÀÌ¿ëÇÐ ; ÀÌŸ½Äº°ÀúÀÚ ; Á¤Á¾Çö ; ±èÇüÁÖ ; ¹Ú°ÇÅÂ
¹ßÇà»ç Çѱ¹±¸Á¶¹°Áø´ÜÀ¯Áö°ü¸®°øÇÐȸ
¼ö·Ï»çÇ× Çѱ¹±¸Á¶¹°Áø´ÜÇÐȸÁö , v.18 n.5(2014-09)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(9) ÃÑÆäÀÌÁö(10)
ISSN 2234-6937
ÁÖÁ¦ºÐ·ù ±¸Á¶
ÁÖÁ¦¾î °­-ÄÜÅ©¸®Æ® °è¸é ; ÄÜÅ©¸®Æ® ÃæÀü°­°ü ÇÕ¼ºº¸ÀÇ ±¸¼ÓÈ¿°ú ; ź-¼Ò¼º ; ÄÜÅ©¸®Æ® ÃæÀü°­°üÀÇ ÈÚ ½ÇÇè ; CFT conposite beam ; Steel-concrete interface ; Flexural beam test ; Finite element analysis
¿ä¾à1 º» ³í¹®Àº °­-ÄÜÅ©¸®Æ® ½½¸³½ÇÇèÀ¸·Î °áÁ¤µÈ °è¸é °è¼ö°ªÀ» ÈÚ ÇÏÁßÀ» ¹Þ´Â ÄÜÅ©¸®Æ® ÃæÀü°­°ü ÇÕ¼ºº¸ ½ÇÇèÀÇ °á°ú¿¹Ãø¿¡ Àû¿ëÇÏ¿© ÄÜÅ©¸®Æ® ÃæÀü°­°ü ÇÕ¼ºº¸ÀÇ °è¸é°Åµ¿°ú ±¸¼ÓÈ¿°ú¸¦ ±Ô¸íÇÏ¿´´Ù. ¿øÇü´Ü¸éÀÇ ÄÜÅ©¸®Æ®°¡ Àü´Ü¸é¾ÐÃàÀ» ¹Þµµ·Ï Çϱâ À§Çؼ­ ÄÜÅ©¸®Æ® ÃæÀü°­°ü¿¡ ¿þºê¿Í Ç÷£Áö¸¦ Ãß°¡ÇÑ ÄÜÅ©¸®Æ® ÃæÀü°­°ü ÇÕ¼ºº¸¸¦ »ç¿ëÇÏ¿© ÈÚ °Åµ¿½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ÄÜÅ©¸®Æ®°¡ Àü´Ü¸é ¾ÐÃàÀ» ¹Þ´Â ´ÜºÎ°¡ °³¹æµÈ ÄÜÅ©¸®Æ® ÃæÀüÇÕ¼º°­°üÀÇ °æ¿ì¿¡´Â ±¸¼ÓÈ¿°ú¿¡ ÀÇÇØ ¾à 16%ÀÇ °­µµÁõÁøÈ¿°ú¸¦ È®ÀÎÇÏ¿´À¸¸ç, ´ÜºÎ¸¦ Æó¼âÇÏ¿© ±¸¼ÓÈ¿°ú°¡ Ä¿Áø ÄÜÅ©¸®Æ®ÃæÀü ÇÕ¼º°­°üÀÇ °æ¿ì¿¡´Â 35% Á¤µµÀÇ Å« °­µµÁõÁøÈ¿°ú°¡ ¹ß»ýÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´´Ù. ½ÇÇè°ú ¼öÄ¡ÇØ¼®À» ÅëÇØ ¾òÀº ÀÌ·¯ÇÑ °á°ú´Â ÄÜÅ©¸®Æ® ÃæÀü°­°üÀ» ÀÌ¿ëÇÑ ±³·®ÀÇ »óºÎ °Å´õ³ª ¾ÆÄ¡¸®ºê¿¡ ´ëÇÑ ´Ü¸é °áÁ¤¿¡ Àû¿ëµÇ´Â Àû¿ë¼ºÀ» °®´Â´Ù.
¿ä¾à2 Interface behavior and confining effects of concrete-infilled steel tube (CFT) composite beam were investigate based on the experimental observations and numerical analyses. For this purpose, laboratory four-points bending tests were performed for the two test specimens of 1,000mm long CFT composite beams. The test beams were made of ?110mm and 4.5mm thick steel tube and 10mm thick steel web and bottom flange. Therefore, concrete infilled in steel tube was in compression through the entire cross section due to the web and bottom flange. Two end section conditions, with end section cap and without end section cap, were considered in experiments to monitor the relative slip displacement at ends and induce confining effects at center. In numerical aspects, finite element analysis considering steel-concrete interface behavior was performed and compared to the experimental results.
¼ÒÀåó Çѱ¹±¸Á¶¹°Áø´ÜÀ¯Áö°ü¸®°øÇÐȸ
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DOI jksmi.2014.18.5.009
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