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Çѱ¹¼öÀÚ¿øÇÐȸ / v.27, no.2, 1994³â, pp.111-120
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¾Ð·Â º¯È¸¦ °í·ÁÇÑ ±³°¢ ÁÖÀ§¿¡¼ÀÇ ¼¼±¼Çö»ó ¿¬±¸
( Pier Scour Prediction in Pressure Flow ) |
| ¾È»óÁø;ÃÖ°è¿î;±èÁ¾¼·;¾ÈâÁø; ÃæºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Çѱ¹¼öÀÚ¿ø°ø»ç ¼öÀÚ¿ø¿¬±¸¼Ò;´ëÀü»ê¾÷´ëÇб³ µµ½Ã°øÇаú;Çѱ¹¼öÀÚ¿ø°ø»ç ¼öÀÚ¿ø¿¬±¸¼Ò, ÃæºÏ´ë ´ëÇпø;
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| º» ¿¬±¸´Â ±³°¢ ÁÖÀ§¿¡¼ÀÇ ÃÖ´ë¼¼±¼½Éµµ¿¡ °üÇÑ ½ÇÇè³í¹®À¸·Î½á ½ÇÇè¿¡ »ç¿ëµÈ ±³°¢ ¸ðÇüÀº ±Ý° ÁúÀÎ º¸Ã»Ãµ³» »ê°è±³¿¡ ¼³Ä¡µÈ ±³°¢À» 1/40À¸·Î Ãà¼ÒÇÏ¿© »ç¿ëÇÏ¿´´Ù. ½ÇÇè¼ö·Î¿¡¼ »ç¿ëµÈ ÇÏ»óÀç·á´Â º¸Ã»Ãµ ±³°¢ ¼³Ä¡ÁöÁ¡ÀÇ ÇÏ»óÀç·áÁß #4¹øÃ¼¸¦ Åë°úÇÑ ¸ð·¡¸¦ ±×´ë·Î »ç¿ëÇÏ¿´À¸¸ç À̶§ÀÇ Æò±Õ ÀÔ°æÀº 0.8mmÀ̾ú´Ù. ¸ðÇü¼ö·Î´Â ¿øÇüÇÏõ°ú ¸ðÇü¼ö·Î¿¡¼ÀÇ Á¶µµ°è¼ö ½ÇÃø, ¸ðÇü¼ö·Î °æ»çº¯È¿¡ µû¸¥ ÃÖ´ë¼¼±¼½ÉµµÀÇ º¯È, ¿øÇü°ú ¸ðÇü³» ÇÏ»óÀç·áÀÇ Ä§°¼Óµµ¿Í ¸¶Âû¼ÓµµÀÇ ºñ¸¦ °ËÅäÇÏ¿© ÇÏ»ó°æ»ç¸¦ °áÁ¤ÇÏ°í ¿øÇüÇÏõ¿¡¼ÀÇ ¼¼±¼½Éµµ¸¦ Á÷Á¢ ÃøÁ¤ÇÏ¿© ¸ðÇü¼ö·Î ½ÇÇè°á°ú¿Í ºñ±³ÇÔÀ¸·Î½á ¸ðÇü¼ö·Î¸¦ °ËÁõÇÏ¿´´Ù. ÀÚÀ¯¼ö¸éÇÏ¿¡¼ ¼ö½É, Froude ¼ö, °³µµºñ, Á¢±Ù°¢ º¯È¿¡ µû¸¥ ÃÖ´ë¼¼±¼½Éµµ¸¦ ±×¸²À¸·Î ³ªÅ¸³»¾î ¼Õ½±°Ô ÃÖ´ë¼¼±¼½Éµµ¸¦ ±¸ÇÒ ¼ö ÀÖµµ·Ï ÇÏ¿´À¸¸ç, ÀÚÀ¯¼ö¸éÇÏ ¹× ¾Ð·ÂÈ帧ÇÏ¿¡¼ ½ÇÇèÀ» ½Ç½ÃÇÑ °á°ú ¾Ð·ÂÈ帧ÇÏ¿¡¼ÀÇ ÃÖ´ë¼¼±¼½Éµµ´Â ÀÚÀ¯ ¼ö¸éÇÏ¿¡¼º¸´Ù 2¹è Á¤µµ Å©°Ô ³ªÅ¸³µ´Ù. |
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| In this experimental research, the maximum scour depth at pier was studied. The model of the pier of San Gye bridge in the Bocheong stream was set for experimental pier scour studies. Several model verification processes were conducted through the roughness comparisons between model and prototype, pursuring scour depth variations with time depending upon channel bed variation, the comparison of the ratio between falling velocities and shear velocities in the model and prototype, and the comparison of pier scour between experimental data and field measuring data. The experiments were conducted in the free flow conditions and pressure flow conditions. The maximum scour depth at piers in the pressure flow conditions is twice as much as compared to the free flow conditions. Also, the maximum scour depth variations are indicated in the figures based on the Froude numbers, opening ratios, water depths and approaching angles in the free surface flow conditions. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.27, no.2, 1994³â, pp.111-120
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920094925)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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