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Çѱ¹µµ·ÎÇÐȸ / v.12, no.3, 2010³â, pp.27-35
»õ·Î¿î ¸Å¼³Çü ½ÅÃàÀÌÀ½ÀåÄ¡ÀÇ ¼º´É Æò°¡
( Performance Evaluation of a New Buried Expansion Joint )
È«¼ºÇù;¹Ú»ó·Ä;Á¿ëÇö; °Ç¼³¿£Áö´Ï¾î¸µ;Á¦ÁÖ´ëÇб³ Åä¸ñ°øÇаú;Á¦ÁÖ´ëÇб³ Åä¸ñ°øÇаú;
 
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Asphalt Plug Joint(APJ)´Â Åë»ó ¹«°Ôºñ·Î 20%ÀÇ ¿ªÃ»(bitumen)°ú 80%ÀÇ °ñÀç·Î ±¸¼ºµÈ ¿ªÃ» È¥ÇÕ¹°À» ÀÌ¿ëÇÏ¿© Æ÷Àå »çÀÌÀÇ ½ÅÃàÀÌÀ½ºÎ¸¦ ¸Þ²Ù´Â ÇüÅÂÀÇ ½ÅÃàÀÌÀ½ÀåÄ¡·Î, µµ·Î Æ÷Àå°ú ½ÅÃàÀÌÀ½ºÎÀÇ ¸Å²ô·¯¿î ¿¬°áÀ» °¡´ÉÄÉ ÇÏ¿© Æòź¼ºÀ» È®º¸Çϸ鼭 Àç·áÀÇ Æ¯¼ºÀ» ÀÌ¿ëÇÏ¿© ±³·® »óÆÇÀÇ ½ÅÃàÀ» ÀÚüÀûÀ¸·Î Èí¼öÇϵµ·Ï µÇ¾î ÀÖ´Â ¸Å¼³Çü ½ÅÃàÀÌÀ½ÀåÄ¡ÀÌ´Ù. ±×·¯³ª APJÀº 6-7³âÀÇ »ç¿ëÁֱ⸦ °¡Áö°í ¼³°èµÇÁö¸¸ ¶§¶§·Î ½Ã°ø ÈÄ 6°³¿ù ³»¿¡ Á¶±âÆÄ¼ÕÀÇ »ç·Ê°¡ ³ªÅ¸³ª°í ÀÖ´Ù. ÀÌ·¯ÇÑ Á¶±âÆÄ¼ÕÀº ÀæÀº º¸¼ö °ø»ç·Î ÀÎÇÑ ±³ÅëÁ¤Ã¼ µîÀ» À¯¹ßÇϸç ÀÌ·Î ÀÎÇÑ »çȸÀû ºñ¿ëÀº ÀÌÀ½ÀåÄ¡ÀÇ ¼³Ä¡ºñ¿ëÀ» ÈξÀ »óȸÇÑ´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â APJÀÇ ´ÜÁ¡À» ±Øº¹ÇÒ ¼ö ÀÖ´Â »õ·Î¿î ½Ã½ºÅÛÀÎ Buried Folding Lattice Joint(BFLJ)À» °³¹ßÇÏ¿´°í ½ÃÇèü¸¦ Á¦ÀÛÇÏ¿© ½ÇÇèÀ» ÅëÇØ ±âÁ¸ ½Ã½ºÅÛ°ú ¼º´ÉÀ» ºñ±³ ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè°á°ú APJ´Â ½ÅÃà¿¡ ÀÇÇÏ¿© öÆÇ ¾ç³¡¿¡¼­ º¯ÇüÀÌ ¹ß»ýÇÏ¿© Ç¥¸éÀ¸·Î È®»êµÇ¾ú´Ù. ÀÌ °á°ú·Î öÆÇ ³¡À» µû¶ó ¹ß»ýÇÏ´Â ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ º¯ÇüÁýÁßÀ¸·Î ÀÎÇÑ ÀÎÀå±Õ¿­°ú Á¢ÇÕºÎÀÇ ºÎÂøÆÄ±« Çö»óÀÌ ¹ß»ýÇÏ¿´À¸¸ç À̰ÍÀÌ Á¶±âÆÄ¼ÕÀÇ ¿øÀÎÀÌ µÈ´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¹Ý¸é »õ·Î °³¹ßµÈ BFLJÀÇ °æ¿ì´Â ¿òÁ÷ÀÌ´Â ½ºÅ͵带 »ç¿ëÇÏ°í °í¼º´É Àç·á¸¦ »ç¿ëÇÔÀ¸·Î½á Á¶ÀÎÆ® Àüü¿¡ °í¸¥ º¯ÇüÀ» À¯µµÇÏ¿© APJÀÇ º¯ÇüÁýÁßÀÇ ´ÜÁ¡À» ÇØ¼ÒÇÒ ¼ö ÀÖ¾ú´Ù. ÀÌ¿¡ »õ·Î °³¹ßµÈ BFLJ´Â APJÀÇ ¹®Á¦Á¡À» ±Øº¹Çϰí Á¶±âÆÄ¼ÕÀ» ¿¹¹æÇÒ¼ö ÀÖÀ» °ÍÀ̶ó ÆÇ´ÜµÈ´Ù.
Asphalt Plug Joint(APJ) is an buried expansion joint that enabling the smooth connection of expansion gap and road pavement by filling the gap with bituminous mixture of 20% bitumen and 80% aggregate by weight, so it secures evenness and expansion or contraction using the material's properties. Although APJ is designed to have a 6-7 year lifecycle, there are some cases where it is damaged within the first six months. This early damage cause traffic congestion due to frequent repair works, and social cost exceeding the installation cost of the joint. So, in this research, we have developed a new system of Buried Folding Lattice Joint(BFLJ) which can overcome the disadvantages of APJ, and have analyzed and compared it's performance with the conventional APJ through experiment with specimens. As a result of the experiment, APJ had crack formation on both ends of the gap plate, spreading to the surface of the expansion joint. With this result, we can conclude that the reason for early damage is the tension failure due to the concentration of strain in the asphalt mixture along the end of gap plate and the debonding along the joint section. In contrast, the newly developed BFLJ induced even transformation in the joint by applying moving stud and high performance material, and resolved APJ's disadvantage of strain concentration. Therefore, it could be seen that the newly developed BFLJ could overcome the disadvantages of APJ and prevent early damage.
 
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¿ªÃ»Àç·á;½ÅÃà;ºÎÂøÆÄ±«;asphalt plug joint;buried folding lattice joint;bituminous material;expansion;debonding;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.12, no.3, 2010³â, pp.27-35
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201033359736978)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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