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´ÜºÎ¿¡ ±¹ºÎºÎ½ÄÀÌ ¹ß»ýÇÑ ¿ëÁ¢ ¿øÇü °°üÀÇ ÀÜÁ¸ ¾ÐÃà °µµ Æò°¡ / Evaluation on residual compressive strength of welded circular tubular members with locally corroded ends |
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±èÇü¼® ; ½ÅâÈñ ; ´Ù¿ÀµÎÀÌŲ ; Á¤¿µ¼ö ; ±èÀÎÅ |
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Çѱ¹°±¸Á¶ÇÐȸ ³í¹®Áý, Vol.30 No.3 (2018-06) |
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½ÃÀÛÆäÀÌÁö(145) ÃÑÆäÀÌÁö(8) |
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¿ëÁ¢ ¿øÇü °°ü ; ´ÜÁÖ ; ±¹ºÎºÎ½Ä ; ¼Õ»óºÎÇǺñ ; ¾ÐÃà°µµ ; Welded circular tubular member ; Short column ; Local corrosion ; Volume loss ratio ; Compressive strength |
¿ä¾à1 |
º» ¿¬±¸¿¡¼´Â ¿¬°áºÎ³ª ÁöÁ¡ºÎ µî ´ÜºÎ¿¡ ±¹ºÎºÎ½ÄÀÌ ¹ß»ýÇÑ ¿øÇü°°üÀÇ ¾ÐÃà°µµ Æò°¡¹ýÀ» °ËÅäÇϱâ À§ÇØ, ´ÜºÎ¿¡ ÀÎÀ§ÀûÀÎ ±¹ºÎºÎ½ÄÀ» ¸ð»çÇÑ ¿ëÁ¢ ¿øÇü°°üÀÇ ¾ÐÃà½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ¿øÇü°°ü ½ÃÇèü´Â ´ÜÁÖ·Î Á¦ÀÛÇÏ¿´À¸¸ç, ºÎ½Äȯ°æ¿¡ µû¸¥ ´Ù¾çÇÑ ±¹ºÎºÎ½Ä Á¤µµ¸¦ ¸ð»çÇϱâ À§ÇØ ºÎ½ÄµÈ ±íÀ̸¦ 0, 4, 6 mm·Î, ºÎ½ÄµÈ ³ôÀ̸¦ 0, 20, 60, 180 mm·Î ±â°è °¡°øÇÏ¿´´Ù. ¾ÐÃà½ÇÇè °á°ú, ¾ÐÃà ÀÓ°èÇÏÁßÀº ºÎ½ÄµÈ ±íÀÌ ¹× ³ôÀÌ°¡ Áõ°¡ÇÔ¿¡ µû¶ó ¼±ÇüÀûÀ¸·Î °¨¼ÒÇÏ¿´À¸¸ç, ÀÜÁ¸ ÀÓ°èÇÏÁߺñ´Â ºÎ½Ä¼Õ»ó ºÎÇǺñ·Î ÃßÁ¤ÇÒ ¼ö ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù. ¶ÇÇÑ, ±¹ºÎºÎ½Ä ¼Õ»ó ºÎÇǺñ¸¦ ÀÌ¿ëÇÏ¿© ´ÜºÎ¿¡ ºÎ½Ä¼Õ»óÀÌ ¹ß»ýÇÑ ¿ëÁ¢ ¿øÇü°°ü ´ÜÁÖÀÇ ÀÜÁ¸ ¾ÐÃà ÀÓ°èÇÏÁß Æò°¡½ÄÀ» Á¦½ÃÇÏ¿´´Ù. |
¿ä¾à2 |
To investigate compressive strength of corroded circular tubular columns, compression tests were carried out on welded circular tubular members with locally corroded end. The members were cut into short columns and artificial local corrosion were introduced to the bottom end with different corrosion depth of 0, 4, 6mm and height of 0, 20, 60, 180mm. As a result, compressive critical loads decreased linearly with increasing of corrosion level (depth and height), and it was confirmed that residual compressive critical loads can be evaluated by corroded volume loss ratio. Accordingly, an equation of residual compressive critical loads was suggested for welded circular tubular short columns with locally corroded ends. |