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±â»ç¸í ±¼ÀýÇü ½ÅÃàÀÌÀ½ÀåÄ¡ÀÇ ÇǷγ»±¸¼º Æò°¡ / Fatigue Durability Evaluation of Refraction Expansion Joints
ÀúÀÚ¸í ³ªÁؼö(Jun-Su Na) ; ÀÌŸ(Ta Lee)½Äº°ÀúÀÚ ; ÇÑÀǼ®(Eui-Seok Han) ; ¼º¿ø±Ô(Won-Kyu Sung) ; ÀÌÁ¾¼®(Jong-Suk Lee)
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¼ö·Ï»çÇ× Çѱ¹±¸Á¶¹°Áø´ÜÀ¯Áö°ü¸®°øÇÐȸ ³í¹®Áý , Vol.21 No.6(2017-11)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(10) ÃÑÆäÀÌÁö(6)
ISSN 2234-6937
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ÁÖÁ¦¾î ½ÅÃàÀÌÀ½ÀåÄ¡ ; ±¼ÀýÇü ; Àú¼ÒÀ½ ; ÇǷγ»±¸¼º ; º¼Æ® ; Expansion Joints ; Refraction ; Low Noise ; Bolt
¿ä¾à1 ±¼ÀýÇü ½ÅÃàÀÌÀ½ÀåÄ¡´Â ½ÅÃàÀÌÀ½ÀåÄ¡ÀÇ ¹®Á¦Á¡ÀÎ Ãæ°Ý, ¼ÒÀ½, ±³Ã¼¼º, ±³ÃàÁ÷°¢¹æÇâ º¯À§, ´ÜÂ÷¹ß»ýµîÀ» º¸¿ÏÇÏ¿© »õ·Ó°Ô °³¹ßµÇ¾ú´Ù. ±¼ÀýÇü ½ÅÃàÀÌÀ½ÀåÄ¡´Â ÁÖÇà¸éÀÌ ¿¬¼ÓÈ­ µÇ¾î Ãæ°ÝÀÌ ÀÛ°í ¼ÒÀ½ÀÌ ÀÛÀº °ÍÀÌ Æ¯Â¡ÀÌ´Ù. ±¼ÀýÇü ½ÅÃàÀÌÀ½ÀåÄ¡ÀÇ °Åµ¿ ¹æ½ÄÀº ¸µÅ©ÀÇ È¸ÀüÀ¸·Î ½ÅÃà °Åµ¿À» ¼öÇàÇÑ´Ù. ¸µÅ©ÀÇ È¸Àü °Åµ¿ ½Ã °Åµ¿ÀÇ Á᫐ ÃàÀ̵Ǵ °ÍÀº º¼Æ®ÀÌ´Ù. ±×·¯¹Ç·Î ±¼ÀýÇü ½ÅÃàÀÌÀ½ ÀåÄ¡´Â º¼Æ®ÀÇ ³»±¸¼ºÀÌ ¸Å¿ì Áß¿äÇÏ´Ù°í ÇÒ ¼ö ÀÖ´Ù. ÇÏÁö¸¸ ±¼ÀýÇü ½ÅÃàÀÌÀ½ÀåÄ¡ÀÇ º¼Æ® ³»±¸¼ºÀº ÀÌ·ÐÀû, ½ÇÇèÀû °ËÁõÀÌ ºÎÁ· ÇÑ ½ÇÁ¤ÀÌ´Ù. º» ³í¹®¿¡¼­´Â º¼Æ®ÀÇÇÇ·Î ³»±¸¼ºÀ» °ËÁõ Çϱâ À§ÇØ ½ÅÃà·® 300 mm ±¼ÀýÇü ½ÅÃàÀÌÀ½ÀåÄ¡ ½ÃÇè ½ÃÆíÀ» Á¦ÀÛ ÇÏ¿´´Ù. Á¦ÀÛµÈ ½ÃÇè º¼Æ® ³»ºÎ¿¡´Â º¼Æ® Àü¿ë ½ºÆ®·¹ÀΰÔÀÌÁö¸¦ ¼³Ä¡ÇÏ¿´´Ù. ½ÃÇè ¹æ¹ýÀº KS F 4425¸¦ ÁØ¿ë ÇÏ¿© ½ÃÇè ÇÏ¿´´Ù. 200¸¸È¸ ÇÇ·Î ¹Ýº¹ ½ÃÇèÀ» ÅëÇØ ±¼ÀýÇü ½ÅÃàÀÌÀ½ÀåÄ¡ ³»ºÎ¿¡ Á¶¸³µÈ º¼Æ®ÀÇ ÇÇ·Î ³»±¸¼ºÀ» È®ÀÎ ÇÏ¿´´Ù.
¿ä¾à2 The refraction expansion joints have been newly developed by complementing the problems of shock, noise, replaceability, displacement in the direction perpendicular to bridge, vertical difference, which are problems of existing expansion joints. The Refraction expansion joints are characterized by continuous surfaces with small impact and low noise. The behavior of the Refraction expansion joints performs the bridge expansion behavior by rotation of the link. In the rotational behavior of the link, the bolt is the central axis of the behavior. Therefore, it can be said that the durability of the bolt is very important. However, the theoretical and experimental verification of the bolt durability of the Refraction expansion joint is lacking. In this paper, to verify the fatigue durability of the bolt, test specimens with a 300 mm Refraction expansion joint were fabricated. A strain gauge dedicated to the bolt was installed inside the manufactured test specimen bolt. The test method was applied in accordance with KS F 4425. The fatigue durability of the bolts assembled inside the diaphragm expansion joint was confirmed by the repeated fatigue test of 2,000,000 cycles.
¼ÒÀåó Çѱ¹±¸Á¶¹°Áø´ÜÀ¯Áö°ü¸®°øÇÐȸ
¾ð¾î Çѱ¹¾î
DOI https://doi.org/10.11112/jksmi.2017.21.6.010
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