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Çѱ¹Áö¹Ý°øÇÐȸ / v.13, no.1, 1997³â, pp.137-146
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( Consolidation Behaviour of Dredged Clay Ground Improved by Horizontal Drain Method ) |
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| A Study on the º» ¿¬±¸¿¡¼´Â ÇÃ¶ó½ºÆ½µå·¹ÀÎÀ» ÀÌ¿ëÇÏ¿© Áø°ø¼öÆò¹è¼ö¿¡ ÀÇÇØ °³·®µÈ Áؼ³ Á¡Åä Áö¹ÝÀÇ ¾Ð¹Ð°Åµ¿À» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ´ëÇü ¾Ð¹Ð½ÃÇèÀ» ½Ç½ÃÇÏ¿´À¸¸ç, ½ÇÇè °á°ú°¡ Æ÷ÅÙ°áÁß°ø¿øÁÖÀÇ ¾Ð¹ÐÀÌ·ÐÀ» ÀÌ¿ëÇÑ ¼öÄ¡ÇØ¼®¿¡ ÀÇÇØ ºñ±³ °ËÅäµÇ¾ú´Ù. º» ¿¬±¸ ½ÇÇè°á°ú¿¡ ÀÇÇÏ¸é ¼öÆò¹è¼öÁø°ø¾Ð¹Ð½ÃÇèÀº Á¡ÅäÃþ ³»ºÎÀÇ ÇÔ¼öºñ ¹× °£±Ø¼ö¾Ð°ú µå·¹ÀÎ ¹è¼ö ¼Óµµ µîÀÌ Áø°ø¾Ð¹Ð ½Ã°£ °æ°ú¿¡ µû¶ó °¨¼ÒµÇ¾î ¾Ð¹ÐÀÌ ±Þ¼ÓÇÏ°Ô ÁøÇàµÇ°í ÀÖÀ½ÀÌ È®ÀεǾú´Ù. Á¡ÅäÃþ Áß°ø¿øÁÖÀÇ ¹æ»ç·ù¿¡ ´ëÇÑ ¼±ÇüÆ÷ÅÙ¼£¾Ð¹ÐÀÌ·ÐÀ» ÀÌ¿ëÇÏ¿© ¼öÄ¡ ¾Ð¹ÐÇØ¼® °á°ú °£±Ø¼ö¾ÐÀº È®»ê Çüź¸´Ù ÈëÀÇ º¯Çü°ú Åõ¼ö¿¡ ÀÇÇØ Å©°Ô Á¿ìµÇ°í ÀÖÀ¸¹Ç·Î, ÁöÇ¥¸é ºÎ±Ù¿¡¼ÀÇ ½ÇÃø ħÇÏ·®Àº ¾Ð¹ÐÀÀ·ÂÁõ°¡À² a°¡ -0.5Á¤µµ¿¡¼ ¼öÄ¡ÇØ¼®°ú ÀÏÄ¡ÇÏ¸ç ¶ÇÇÑ µå·¹ÀÎ ¼³Ä¡ ºÎ±Ù¿¡¼ÀÇ Á¡ÅäÃþ ħÇÏ·®Àº Baryon ¾Ð¹ÐÀ̷аú À¯»çÇÑ °Åµ¿À» ³ªÅ¸³»°í ÀÖ´Ù. ÃÖÁ¾ÀûÀ¸·Î ¼öÆò ¹è¼ö¿¡ ´ëÇÑ Àû´çÇÑ ¼±ÅðúÁ¤À» Æ÷ÇÔÇÑ ¼³°è ¹× ½Ã°ø°ü¸®°¡ ½ÃÇè°á°ú¿¡ ÀÇÇÏ¿© ¼³¸í µÇ¾úÀ¸¸ç Æ÷ÅټȾйÐÀÌ·ÐÀº Áø°ø¹è¼ö½Ã ¼öÆòµå·¹Àο¡ ÀÇÇÑ ¾Ð¹Ð°Åµ¿À» Á¤È®ÇÏ°Ô ¿¹ÃøÇÒ ¼ö ÀÖ´Ù. |
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| In this study, a large consolidation test was carried out to estimate the consolidation behaviour of dredged clay ground improved by horizontal drain using plastic board drain with a vacuum pressure. The test results were analyzed by a numerical simulation using potential consolidation theory applied to a hollow cylinder. The rapid decreases in pore pressure and the drain speed in the plastic board indicate that the consolidation occurred quickly after the vacuum state was applied to the test soil. According to the numerical analysis obtained by applying the linear potential consolidation theory to a clay hollow cylinder with external radial drainage, the pore pressure is affected by the strain and the permeability of the soil rather than by the diffusion types. Therefore, measured surface settlement agreed with the numerical solution at the point where consolidation pressure increasing rate u: -0.5. Also the behaviour of the clay layer settlement in the place where the drain was installed was similar to that shown in Barron's consolidation theory. Finally, the design and construction procedure including the selection of the appropriate arrangement of horizontal drains were discussed based on the results of the laboratory tutsts. It is also shown that the potential consolidation theory make it possible to predict consolidation behaviour in the field using horizontal drains exactly. |
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| Ű¿öµå |
| Consolidation behaviour;Dredged clay ground;Vacuum pressure;Pore pressure;Water content;Settlement; |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.13, no.1, 1997³â, pp.137-146
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920447183)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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