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Çѱ¹¼öÀÚ¿øÇÐȸ / v.31, no.3, 1998³â, pp.269-277
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( Experimental Study for Protection of Local Scouring around Bridge Pier in a Curved Channel )
ÃÖÀÎÈ£;¹Ú¿µÁø;¼ÛÀç¿ì; ¼­ÀÏÀü¹®´ëÇÐ Åä¸ñ°ú;¼­ÀÏÀü¹®´ëÇÐ Åä¸ñ°ú;È«ÀÍ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ¼ö¸®½ÇÇèÀ» ½Ç½ÃÇÏ¿© ¸¸°îºÎÀÇ È帧Ư¼º°ú ¸¸°îºÎ¿¡¼­ÀÇ ±³°¢ ÁÖÀ§ ±¹ºÎ¼¼±¼Çü»ó, ÃÖ´ë ±¹ºÎ¼¼±¼½É µîÀ» ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ, ±âÁ¸ÀÇ ¼¼±¼º¸È£°ø¹ý Áß ¿øÈ¯¿¡ ÀÇÇÑ º¸È£°ø¹ýÀ» ¸¸°îºÎ¿¡ Àû¿ëÇÏ¿© ¼¼±¼°¨¼ÒÈ¿°ú¸¦ ºÐ¼®ÇÏ¿´´Ù. 180' ¸¸°î¼ö·Î¿¡ ´ëÇØ À̵¿»ó ½ÇÇè°á°ú º» ½ÇÇèÁ¶°Ç¿¡¼­´Â ÃÖ´ë Ⱦ¹æÇâ ÇÏ»ó°æ»ç°¡ 150' ´Ü¸é¿¡¼­ ¹ß»ýÇÏ¿´À¸¸ç, ¿øÈ¯¿¡ ÀÇÇÑ ¼¼±¼°¨¼ÒÈ¿°ú´Â À¯·Î Á÷¼±ºÎ¿¡¼­ ÃÖ´ë 40%, ¸¸°îºÎ¿¡¼­´Â 150' ´Ü¸é ¿ÜÃøÀÇ °æ¿ì ÃÖ´ë 44%ÀÇ °¨¼ÒÈ¿°ú¸¦ º¸¿´´Ù. ÆøÀÌ ±³°¢Æø¿¡ 2¹èÀÎ ¿øÈ¯¿¡ ´ëÇÏ¿© ½ÇÇèÇÑ °á°ú, À¯·Î Á÷¼±ºÎ¿¡¼­´Â ¿øÈ¯À» .02h(¿©±â¼­ h´Â ¼ö½É)¸¸Å­ ÇÏ»óÀú¸é¿¡ ¼³Ä¡ÇÏ¿´À» ¶§ °¡Àå È¿°úÀûÀ̾úÀ¸¸ç, À¯·Î ¸¸°îºÎ¿¡¼­´Â 0.1h ¸¸Å­ ÇÏ»óÀú¸é¿¡ ¼³Ä¡ÇÏ¿´À» ¶§ °¡Àå ±³È­ÀûÀ̾ú´Ù. Çٽɿë¾î : Ⱦ¹æÇâ ÇÏ»ó°æ»ç, ¼¼±¼, ¼¼±¼º¸È£°ø, ¿øÈ¯ À¯·Î ¸¸°îºÎ
Laboratory flume experiments to investigate the characteristics of the flows and local scour around circular bridge pier in a curved channel are performed. In this study, the effect of a circular collar device for controlling the depth of scour is examined. The scour depth with a collar is about 40% of the scour depth without collar in the straight course of the flume while it is about 44% of the scour depth without collar at the location of 150' in the curved channel. As the results of experiments using the collar of which diameter is twice of pier, the reduction of scour depth is the most effective in a straight channel when the location of collar is 0.2h( h:depth) below the channel bottom. And, the reduction of scour depth is the most effective in a curved channel when the location of collar is 0.1h below the channel bottom. Keywords : transverse bed slope, scour, protection of local scouring, collar, channel bend
 
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Ⱦ¹æÇâ ÇÏ»ó°æ»ç;¼¼±¼;¼¼±¼º¸È£°ø;¿øÈ¯;À¯·Î ¸¸°îºÎ;transverse bed slope;scour;protection of local scouring;collar;channel bend;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.31, no.3, 1998³â, pp.269-277
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920100966)
¾ð¾î : Çѱ¹¾î
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