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Çѱ¹Áö¹Ý°øÇÐȸ / v.16, no.1, 2000³â, pp.43-50
¿¬¾àÁ¡¼ºÅä Áö¹Ý¿¡ Ÿ¼³µÈ ½ÊÀÚÇü¹è¼öÀçÀÇ µî°¡Á÷°æ »êÁ¤
( Estimation of Equivalent Diameter for Cross Shaped Vertical Drain Installed in Weak Clay Soils )
À忬¼ö;±è¿µ¿ì;±è¼ö»ï; µ¿±¹´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;µ¿±¹´ëÇб³ ´ëÇпø Åä¸ñȯ°æ°øÇаú;Áß¾Ó´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ³í¹®Àº ½Ç³»½ÃÇè°ú ¼öÄ¡¸ðµ¨À» ÀÌ¿ëÇÏ¿© ½ÊÀÚÇü ¹è¼öÀçÀÇ ¾Ð¹ÐÃËÁøÈ¿°ú¿Í µî°¡Á÷°æÀ» °ËÅäÇÏ°í ÆÇÇü¹è¼öÀç¿Í ºñ±³ÇÏ¿´´Ù. ¹è¼öÀçÀÇ µî°¡Á÷°æÀº ½Ç³»½ÃÇèÀ¸·ÎºÎÅÍ ¿ª°è»êÇÏ¿© ¹®Çå¿¡ ÀÇÇØ Á¦½ÃµÈ °ø½ÄÀ¸·ÎºÎÅÍ »êÁ¤µÈ °á°ú¿Í ºñ±³ÇÏ¿´°í, ¾Ð¹ÐÈ¿°ú´Â 3Â÷¿ø Èå¸§ÇØ¼®ÇÁ·Î±×·¥ÀÎ MODFLOW¸¦ »ç¿ëÇÏ¿´´Ù. ÇØ¼®¸ðµ¨ÀÇ ½Å·Ú¼ºÀº ÇöÀåÀÇ Ä§ÇÏ-½Ã°£ °èÃøÀڷḦ ÀÌ¿ëÇÏ¿© °ËÅäÇÏ¿´´Ù. ½Ç³»½ÃÇè°á°ú »êÁ¤µÈ ÆÇÇü ¹è¼öÀçÀÇ µî°¡Á÷°æÀº RixnerÀÇ Á¦¾È½Ä¿¡ À¯»çÇÑ °æÇâÀ» º¸¿´°í, ½ÊÀÚÇü ¹è¼öÀçÀÇ µî°¡Á÷°æÀº $d_w;=; \tarc{3}{4}.(b+t)$·Î »êÁ¤µÇ¾ú´Ù. ½ÇÁ¦ÇöÀåÀ» ¸ðµ¨¸µÇÑ ¼öÄ¡ÇØ¼®°á°ú ½ÊÀÚÇü ¹è¼öÀç´Â ¾Ð¹Ð½Ã°£ÀÌ 9-10% °¨¼ÒÇÏ¿´°í, ÇöÀåÀڷḦ ÀÌ¿ëÇÑ ¼öÄ¡ È帧¸ðµ¨·ÎºÎÅÍ »êÁ¤ÇÑ µî°¡Á÷°æÀº ½Ç³»½ÃÇ躸´Ù 3.5¹è ÀÛÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
In this paper, the consolidation efficiency and the equivalent diameter of the cross shaped drain are examined by using the laboratory test and the numerical model, and the results are compared with those of the band shaped drain. The equivalent diameter of the tested drains is back-calculated from the laboratory experiment and compared with those calculated from the formula suggested in the literature. The efficiency of the cross shaped drain is evaluated by using the 3-D flow program which was validated by the settlement-time test fill data. The results of laboratory test show that the equivalent diameter of the band shaped drain was close to the Rixner's formula and that of the cross shaped drain was fit to the following formula: $d_w;=; \tarc{3}{4}.(b+t)$The results of the numerical analysis show that the cross shaped drain can reduce the consolidation time by 9-10% from that for the band shaped drain. The equivalent diameter obtained from the numerical flow model by using the field data is 3.5 times smaller than that obtained from the laboratory consolidation test.
 
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Plastic board drain;Cross shaped drain;Equivalent diameter;Consolidation efficiency;Numerical model;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.16, no.1, 2000³â, pp.43-50
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011921750016)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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