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Çѱ¹¼öÀÚ¿øÇÐȸ / v.30, no.6, 1997³â, pp.721-729
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±³·®¿¡¼ÀÇ ÃѼ¼±¼±íÀÌ »êÁ¤À» À§ÇÑ Àå±âÇϻ󺯵¿ºÐ¼®
( An Analysis of Long-Term Bed Elevation Changes to Estimate Total Scour Depth at Bridge Site ) |
| ÀÌÀç¼ö; ÀüÁÖ´ëÇб³ Åä¸ñȯ°æ°øÇаú;
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| ±³·®ÁöÁ¡¿¡¼ÀÇ ÃѼ¼±¼±íÀÌ´Â ¼¼°¡Áö ¼ººÐ Áï, Àå±âÇϻ󺯵¿, ´Ü¸éÃà¼Ò¼¼±¼, ±×¸®°í ±¹ºÎ¼¼±¼·Î ±¸¼ºµÈ´Ù. ±×·¯¹Ç·Î Àå±âÇϻ󺯵µÀÇ ºÐ¼®Àº ±³·®ÁöÁ¡¿¡¼ÀÇ ÃѼ¼±¼±íÀ̸¦ »êÁ¤Çϴµ¥ ÀÖ¾î Áß¿äÇÏ´Ù°í ÇÒ ¼ö ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â CHARIMA¸ðÇü°ú HEC-6¸ðÇüÀ» »ç¿ëÇÏ¿© ³²ÇѰ±³ ÁöÁ¡¿¡¼ÀÇ Àå±âÇϻ󺯵¿À» ºÐ¼®ÇÏ¿´´Ù. ºÐ¼®°á°ú, 5³â µ¿¾È Á¤»ó·ù·Î ¹°ÀÌ È带 °æ¿ì CHARIMA¸ðÇüÀº ¾à 45cmÀÇ ÇÏ»ó°íÀÇ »ó½ÂÀ» º¸¿©ÁØ ¹Ý¸é HEC-6¸ðÇüÀº ¾à 5cmÁ¤µµ ÇÏ»ó°í°¡ ÀúÇϵǰí ÀÖÀ½À» º¸¿©ÁÖ¾ú´Ù. 5³â µ¿¾È ºÎÁ¤·ù·Î ¹°ÀÌ È带 °æ¿ì µÎ ¸ðÇü ¸ðµÎ ÇÏ»ó°í°¡ ½ÉÇÏ°Ô º¯µ¿µÊÀ» º¸¿©ÁÖ°í µû¶ó¼ ÃѼ¼±¼±íÀÌ »êÁ¤¿¡ ¸¹Àº ¿µÇâÀ» ¹ÌÄ¡°í ÀÖ´Ù. ±×·¯¹Ç·Î ÃѼ¼±¼±íÀ̸¦ ÀûÀýÇÏ°Ô »êÁ¤Çϱâ À§Çؼ´Â ´Ü¸éÃà¼Ò¼¼±¼°ú ±¹ºÎ¼¼±¼»Ó¸¸ ¾Æ´Ï¶ó Àå±âÇϻ󺯵¿ ¶ÇÇÑ Á¤È®È÷ »êÁ¤ÇØ¾ß ÇϰڴÙ. |
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| Total scour depth at a bridge is comprised of three components: long-term changes, contraction scour and local scour. Therefore, the analysis of long-term bed elevation changes is very important in the estimation of total scour depth at bridge sites. In this research, long-term bed elevation changes at the Namhan River Bridge are analysed using CHARIMA and HEC-6 models. The results show that, for 5-year steady normal stream flow, the bed elevation is aggreded by 45cm for CHARIMA model but degraded by 5cm for HEC-6 model. For 5-year unsteady flow, the bed elevation is changed greatly and it has a great influence on the estimation of total scour depth. Therefore, to make a proper estimation of total scour depth, not only contraction scour and local scour, but also long-term bed elevation changes should be estimated precisely. |
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| Ű¿öµå |
| CHARIMA ¸ðÇü;´Ü¸éÃà¼Ò ¼¼±¼;HEC-6 ¸ðÇü;±¹ºÎ¼¼±¼;Àå±â Çϻ󺯵¿;¼¼±¼±íÀÌ;CHARIMA model;contraction scour;HEC-6 model;local scour;long-term changes;scour depth; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.30, no.6, 1997³â, pp.721-729
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920100661)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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