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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.10, 2009³â, pp.99-110
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¿¬¾àÁö¹ÝÀÇ ÀÔµµ È¥ÇÕºñ¸¦ °í·ÁÇÑ ¾Ð¹ÐƯ¼ºÆò°¡
( Evaluation of Consolidation Characteristics Considering the Mixed Gradation Ratio of Soft Ground ) |
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| ºÎ»ê ½ÅÇ׸¸ ºÏÄÁÅ×ÀÌ³Ê Áö¿ª¿¡¼ ¿¬Á÷¹è¼ö°ø¹ý¿¡ ÀÇÇÑ ¿¬¾àÁö¹Ý°³·®À» À§ÇØ ¼³°èµÈ Á¦¹Ý»çÇ×À» °ËÅäÇϰí, ÇöÀå½ÃÇè½Ã°øÀ» ½Ç½ÃÇÏ¿© ÇöÀå°èÃø °á°ú¸¦ ÀÌ¿ëÇÑ ¾Ð¹ÐħÇÏ Æ¯¼ºÀ» °ËÅäÇÏ¿´´Ù. ¼³°èÄ¡¿Í ÇöÀå°èÃøÄ¡ÀÇ ºñ±³°ËÅä¿¡¼, ¼³°è ¾Ð¹Ðµµ¿¡ ºñÇØ ½ÇÃø¾Ð¹Ðµµ°¡ ¾à 7% ³ô°Ô ³ªÅ¸³µ´Ù. ±× Â÷ÀÌ´Â ¼³°è´ç½ÃÀÇ Áö¹ÝÁ¤¼ö°¡ ÀüüÀûÀÎ Áö¹ÝÀÇ ÀÔµµ È¥ÇÕºñ¸¦ °í·ÁÇÏÁö ¾Ê°í Á¡Å伺ºÐÀÌ ¸¹Àº ½Ã·á¸¦ ÀÌ¿ëÇÏ¿© º¸¼öÀûÀ¸·Î Àû¿ëµÇ¾ú±â ¶§¹®À̶ó°í ÆÇ´ÜÇÏ¿© ´Ù¾çÇÑ ÀÔµµ È¥ÇÕºñº°·Î ½Ç³» ¾Ð¹Ð½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½ÇÇè°á°ú, Á¡Åä½Ã·áÀÇ ½ÇÆ® ¹× ¸ð·¡È¥ÇÕºñ Áõ°¡¿¡ µû¶ó ¾Ð¹ÐÁøÃ´µµ°¡ Áõ°¡ÇÏ´Â °æÇâÀÌ ³ªÅ¸³µÀ¸¸ç, ½ÇÃø ¾Ð¹Ðµµ¿Í °¡Àå Àß ¸ÂÀº ÀÔµµ È¥ÇÕºñ´Â ¸ð·¡ 10%, ½ÇÆ® 50%, Á¡Åä 40%¿´°í, ÀÌ´Â ½ÃÇè½Ã°ø±¸¿ªÀÇ Æò±ÕÀÔµµºÐÆ÷¿Í °ÅÀÇ ÀÏÄ¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. µû¶ó¼ ¸ð·¡, ½ÇÆ® ¹× Á¡Åä°¡ È¥ÀçµÈ ¿¬¾àÁö¹ÝÀ» °³·®ÇÏ´Â °æ¿ì ¼³°è´Ü°è¿¡¼ ÀüüÀûÀÎ ÁöÃþÀÇ Æ¯¼º ¹× ÀÔµµÀÇ È¥ÇÕºñ¸¦ ÃæºÐÈ÷ °í·ÁÇÒ Çʿ䰡 ÀÖ´Ù´Â °ÍÀ» Á¦½ÃÇß´Ù. |
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| In order to provide the design criteria, the characteristics of consolidation for soft ground improvement have been investigated using the field banking test performed by the vertical drain method at the northern container section in Busan New Port. Field test results indicated that the estimated degree of consolidation in design stage decreased by about 7% compared with the measured one. This difference is attributed to the fact that the conservative geological properties were applied with relatively high amount of maximum clay mixture ratio during the design stage. Based on this findings, another laboratory oedometer test was implemented to consider various combination of mixture ratio. It was found that the consolidation degree increased in accordance with the increase of sand/silt mixture ratio. Also, the proportion of 10%, 50%, and 40% for sand, silt, and clay, respectively, was observed as the best combination of mixture ratio to the actual measurement, which is very similar to the average grain size distribution in the banking test area. Therefore, it is suggested that the overall geological characteristics as well as the grain size distribution should be considered in design stage to improve the soft ground that contains mixture of sand, silt, and clay. |
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| Ű¿öµå |
| Consolidation;Grain-size distribution;Ground improvement;Smear effect;Well re sistance; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.10, 2009³â, pp.99-110
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200919061727243)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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