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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸°úÇÐȸ ³í¹®Áö > Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Á¤º¸°úÇÐȸ³í¹®Áö (Journal of KIISE)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) Impact-Echo ½ÅÈ£¿Í Àå´Ü±â ¸Þ¸ð¸®¿¡ ±â¹ÝÇÑ ±³·® °áÇÔ Å½Áö
¿µ¹®Á¦¸ñ(English Title) Defect Detection of Bridge based on Impact-Echo Signals and Long Short-Term Memory
ÀúÀÚ(Author) ¿Àº´µÎ   ÃÖ Çü   ±è¿µÁø   Áø¿øÁ¾   ±èÀ¯¼·   Byoung-Doo Oh   Hyung Choi   Young Jin Kim   Won Jong Chin   Yu-Seop Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 48 NO. 09 PP. 0988 ~ 0997 (2021. 09)
Çѱ۳»¿ë
(Korean Abstract)
PSC ¹Ú½º °Å´õ ±³·®Àº ´Ù¾çÇÑ ¿ä¼Ò·Î ±¸¼ºµÇ¾î ÀÖÀ¸¸ç, ±× Áß °­¿¬¼±Àº °¡Àå Áß¿äÇÑ ¿ä¼ÒÀÌ´Ù. °­¿¬¼±Àº ºÎ½Ä°ú °°Àº °áÇÔÀ¸·ÎºÎÅÍ ¸Å¿ì Ãë¾àÇÏ´Ù. ±×·¡¼­ À̸¦ º¸È£Çϱâ À§ÇØ ´öÆ®¿¡ »ðÀÔÇÑ ÈÄ ÄÜÅ©¸®Æ®¸¦ Ÿ¼³ÇÑ´Ù. ÇÏÁö¸¸ ´öÆ®ÀÇ ³»ºÎ Á÷°æÀº ¸Å¿ì Á¼±â ¶§¹®¿¡ ÀÛÀº ½Ç¼ö·Îµµ °øµ¿ÀÌ ¹ß»ýÇÒ ¼ö ÀÖ´Ù. µû¶ó¼­ ºñÆı« °Ë»ç¸¦ ÀÌ¿ëÇØ ¾òÀº ½ÅÈ£¿¡ ´ëÇÑ Àü¹®ÀûÀÎ Çؼ®À¸·Î °áÇÔÀÇ ¿©ºÎ¸¦ È®ÀÎÇÏÁö¸¸, ÀÌ´Â ¸¹Àº ºñ¿ë°ú ½Ã°£À» ¿ä±¸ÇÑ´Ù. ¶ÇÇÑ ÄÜÅ©¸®Æ® ±¸Á¶¹°ÀÇ ³»ºÎ »óŸ¦ Á¤È®ÇÏ°Ô Å½»çÇÏ´Â °ÍÀÌ ¾î·Æ´Ù. µû¶ó¼­ º» ¿¬±¸¿¡¼­´Â Àå´Ü±â ¸Þ¸ð¸®(Long Short-Term Memory)¸¦ µµÀÔÇÏ°íÀÚ ÇÑ´Ù. ÀÌ ¶§, ÄÜÅ©¸®Æ® ±¸Á¶¹°¿¡¼­ ÀÚÁÖ »ç¿ëµÇ´Â Impact-Echo (IE) ¹æ¹ýÀ» ÀÔ·Â ÀÚÁú·Î »ç¿ëÇÑ´Ù. ±×¸®°í ±¸Á¶¹°ÀÇ Æ¯Â¡(ÄÜÅ©¸®Æ®ÀÇ µÎ²², ´öÆ®ÀÇ ±íÀÌ, Ÿ°ÝÁ¡°ú ÃøÁ¤Á¡°úÀÇ °Å¸®)À» ÇнÀ¿¡ ÇÔ²² È°¿ëÇϸç, IE ½ÅÈ£¿¡ ´ëÇÑ ÁÖÆļö ¼ººÐµµ Ãß°¡·Î È°¿ëÇÑ´Ù. ½ÇÇè °á°ú, º» ¿¬±¸¿¡¼­ Á¦¾ÈÇÑ ¸ðµ¨Àº ¾à 88.56%ÀÇ Á¤È®µµ¸¦ È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
¿µ¹®³»¿ë
(English Abstract)
PSC box girder bridges comprise various elements, of which the tendon is the most important. The tendon is exceedingly vulnerable to defects such as corrosion. So, to protect it, it is inserted into the duct and then poured concrete. However, because the inner diameter of the duct is exceedingly narrow, there is a high probability that a cavity can occur with even a minor mistake. Thus, defects are identified through the professional interpretation of signals obtained using non-destructive testing. However, this requires high cost and much time. Additionally, it is difficult to accurately identify the internal state of the concrete structure. Thus, this study intends to apply Long Short-Term Memory. In this case, the Impact-Echo method, which is often used for concrete structures, is used as an input feature. And the characteristics of the structure (concrete thickness, depth of duct, distance between the hitting point and the measuring point) are used for learning. And, the frequency component of the IE signals is additionally used. As a result, the proposed model in this study can confirm approximately 88.56% accuracy.
Å°¿öµå(Keyword) °áÇÔ Å½Áö   Àå´Ü±â ¸Þ¸ð¸®   Impact-Echo ¹æ¹ý   ÁÖÆļö ¼ººÐ   defect detection   long short-term memory   impact-echo method   frequency components  
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