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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.9, 2004³â, pp.105-114
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( Consolidation Characteristics & Consolidation Period of Dredged Soil by Considering Change of Strain and Stratum Thickness ) |
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| ¾×¼ºÇÑ°è µÎ ¹è ÀÌ»óÀÇ ¸Å¿ì ³ôÀº ÇÔ¼öºñ¸¦ °®´Â Áؼ³Á¡ÅäÀÇ ¾Ð¹ÐƯ¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇØ Rowe cell ¾Ð¹Ð½ÃÇè±â¸¦ »ç¿ëÇÏ¿© ¾Ð¹Ð½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ÃʱâÇÔ¼öºñ º¯È°¡ ¾Ð¹ÐƯ¼º¿¡ ÁÖ´Â ¿µÇâÀ» °ËÅäÇϱâ À§Çؼ ÇÔ¼öºñ¸¦ $100~150%·Î$ º¯È½ÃÄѼ ½ÇÇèÀ» ¼öÇàÇÏ¿´°í À缺Çü Áؼ³Á¡ÅäÀÇ ¾Ð¹ÐƯ¼º°ú ºñ±³ÇÏ¿´´Ù. ½ÇÇè°á°ú·ÎºÎÅÍ Áؼ³Á¡ÅäÀÇ ÃʱâÇÔ¼öºñ°¡ Áõ°¡ÇÒ¼ö·Ï e-logP °î¼±ÀÇ ºñ¼±ÇüÀû °Åµ¿ÀÌ ¶Ñ·ÇÇÏ¿´°í, ÇÏÁߴܰè 40kPa±îÁö´Â °î¼±ÀÇ ±â¿ï±â º¯È°¡ ±Þº¯ÇÏ¿´À¸¸ç ±× ÀÌÈÄÀÇ ÇÏÁߴܰ迡¼´Â ¿Ï¸¸ÇÑ Çü»óÀ» º¸¿©ÁÖ¾ú´Ù. ¾ÐÃàÁö¼öºñ´Â Mesri(1973)°¡ Á¦¾ÈÇÑ °ªÀÇ ¹üÀ§ ³»¿¡ Á¸ÀçÇÏ¿´À¸¸ç, ÃʱâÇÔ¼öºñº¯È°¡ ¾Ð¹Ð°è¼ö¿¡ ¹ÌÄ¡´Â ¿µÇâÀº °ÅÀÇ ¾ø¾ú°í ¿ÀÈ÷·Á ¾Ð¹ÐÇÏÁßÀÇ Å©±â°¡ ¿¬Á÷¾Ð¹Ð°è¼ö¿¡ ¿µÇâÀ» ¹ÌÄ¡°í ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ´ëÇü¾Ð¹Ð½ÃÇè±â¸¦ ÀÌ¿ëÇÏ¿© ¾Ð¹Ð±â°£ Áß Ãþ µÎ²²ÀÇ º¯È¸¦ °í·ÁÇÏ¿© ¾Ð¹Ð±â°£À» »êÁ¤ÇÏ´Â MikasaÀ̷аú ±×·¸Áö ¾ÊÀº TerzaghiÀÇ ÀÌ·ÐÀ» ºñ±³ÇÏ¿´´Ù. ±× °á°ú º¯Çü·üÀÌ Å« Áö¹Ý¿¡¼ÀÇ ¾Ð¹Ð±â°£Àº ¾Ð¹Ð±â°£ Áß Ãþ µÎ²²ÀÇ º¯È¸¦ °í·ÁÇÑ Mikasa ÀÌ·ÐÀÇ °æ¿ì°¡ ±×·¸Áö ¾ÊÀº °æ¿ìº¸´Ù ½ÇÃøÄ¡¿¡ ±Ù»çÇÏ°Ô »êÁ¤µÇ¾ú´Ù. |
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| Consolidation characteristics have been investigated by using Rowe cell consolidation tester for dredged soil, which is more than two times as much as the liquid limit. To examine the effects of variation of water content on consolidation characteristic, tests were carried out varying the initial water content from $100%;to;150%.$ The results were compared with the consolidation characteristics of remolded clay. The test results showed that the hither the initial water content of dredged clay was, the more noticeable the non-linear behavior of e-log P curves occurred. The variation of the gradient was apparent to load stage 40kPa and became less apparent after load stage 80kPa on the e-log P curves. Ratio of compression index stayed within the range suggested by Mesri and variation of initial water content has hardly influenced the coefficient of consolidation. On the contrary, it was found that the magnitude of consolidation load affects the vertical coefficient of consolidation. The variation of stratum thickness during consolidation processing needs to be taken into consideration since hydraulic fill would go through a much larger scale strain than land soil when it is subject to a load. In this study, the consolidation period considering the variation of stratum thickness was analyzed and the results were compared with those of existing consolidation studies which did not consider the variation of stratum thickness. According to the results of the study, the consolidation period of the ground with a larger strain was calculated more close to observed value in case of Mikasa theory which takes the variation of stratum thickness into consideration. |
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| Ű¿öµå |
| Coefficient of consolidation;Dredged soil;Large settlement;Mikasa theory;Strain; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.9, 2004³â, pp.105-114
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200430710459170)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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