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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.11, 2008³â, pp.17-24
Àΰø½Å°æ¸ÁÀ» ÀÌ¿ëÇÑ ÇǾîÀÇ ±¹ºÎ¼¼±¼ Æò°¡
( Estimation of Local Scour at Piers Using Artificial Neural Network )
¹ÚÇöÀÏ;½ÅÁ¾Çö; »ï¼º°Ç¼³ ±â¼ú¿¬±¸¼Ò;»ï¼º°Ç¼³ ±â¼ú¿¬±¸¼Ò;
 
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ÇÏõ ±³°¢¿¡¼­ À¯¹ßµÇ´Â ±¹ºÎ¼¼±¼Àº ±³·®ÀÇ ºØ±«¸¦ À¯¹ßÇÏ´Â ¿äÀÎµé °¡¿îµ¥ Çϳª·Î ¾Ë·ÁÁ® ÀÖ´Ù. ±×·¯³ª, ±³°¢ÁÖÀ§ ÇÏõ È帧Àº ¸Å¿ì º¹ÀâÇϱ⠶§¹®¿¡ ±¹ºÎ¼¼±¼À» Á¤È®ÇÏ°Ô »êÁ¤ÇÏ´Â °æÇè½ÄÀ» µµÃâÇϱⰡ ½±Áö ¾Ê´Ù. µû¶ó¼­, ±âÁ¸ÀÇ °æÇè½ÄµéÀº ƯÁ¤ ¼¼±¼ ÀÚ·á¿¡´Â ÁÁÀº »ó°ü °ü°è¸¦ º¸ÀÌÁö¸¸ ´Ù¾çÇÑ ÇöÀå ¼¼±¼ÀÚ·áµé¿¡ ´ëÇØ ½Å·Ú¼º ÀÖ´Â ¿¹Ãø Á¤µµ¸¦ °®±â´Â ¾î·Æ´Ù. º» ¿¬±¸¿¡¼­´Â ¸¹Àº ÇöÀå °èÃøÀڷḦ ¹ÙÅÁÀ¸·Î ±¹ºÎ¼¼±¼½ÉÀ» »êÁ¤ÇÒ ¼ö ÀÖ´Â Àΰø½Å°æ¸Á ¸ðµ¨À» Á¦¾ÈÇϰíÀÚ ÇÏ¿´´Ù. Á¦¾ÈµÈ »êÁ¤½ÄÀº ±³°¢ Çü»ó, ±³°¢ Æø, ±³°¢ ±æÀÌ, È帧 ÀԻ簢, È帧 ¼Óµµ, ¼ö½É ¹× $D_{50}$ÀÇ ÃÑ 7°³ÀÇ º¯¼öÀÇ ÇÔ¼ö·Î ±¸¼ºµÇ¾ú´Ù. Àΰø½Å°æ¸Á ¸ðµ¨ÀÇ ÇнÀ°ú °ËÁõ¿¡ ÃÑ 426°³ÀÇ ÇöÀå °èÃøÀÚ·áµéÀÌ »ç¿ëµÇ¾úÀ¸¸ç, Àΰø½Å°æ¸Á ¸ðµ¨ÀÌ ±âÁ¸ °æÇè ½Äµé¿¡ ºñÇÏ¿© °³¼±µÈ ¿¹ÃøÁ¤µµ¸¦ º¸ÀÓÀ» È®ÀÎÇÏ¿´´Ù.
It is known that scour at bridge piers is one of the leading causes of bridge failure. However, the mechanism of flow around a pier structure is so complicated that it is difficult to establish a general empirical model to provide accurate estimation for scour. Especially, each of the proposed empirical formula yields good results for a particular data set but can't show reliable predictability for various scouring data set. In this study, an alternative approach, that is, artificial neural networks (ANN), is proposed to estimate the local scour depth with numerous field data base. The local scour depth was modeled as a function of seven variables; pier shape, pier width, pier length, skew angle, stream velocity, water depth, $D_{50}$. 426 field data were used for the training and testing of ANN model. The predicted results showed that the neural network could provide a better alternative to the empirical equations.
 
Ű¿öµå
Artificial neural network;Local scour;Pier;Scour depth;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.11, 2008³â, pp.17-24
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200806135608523)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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