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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.5, 2002³â, pp.67-72
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ºÒÆ÷ÈÅä¿¡¼ÀÇ º¹ÇÕÀû ½À±â¿Í ¿È帧ÀÇ ºÐ¼®¸ðµ¨
( A Coupled Moisture and Bent Flow Analysis Model in Unsaturated Soil ) |
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| Æ÷Àå³»ÀÇ ÈëµéÀÇ ÇÔ¼öºñ´Â °¿ì, ¿Âµµ µîÀÇ ±âÈÄÀû ¿äÀο¡ µû¶ó °èÀýÀûÀ¸·Î º¯ÈÇÑ´Ù. ±×°ÍÀº °¿ì·ÎÀÎÇÑ µ¿¼ö°æ»ç°¡ ½À±âÀÇ È帧À» À¯¹ßÇϰí, ¿Âµµº¯È·Î ÀÎÇÑ ¿Âµµ°æ»ç°¡ Á÷.°£Á¢ÀûÀ¸·Î ¿È帧»Ó¸¸¾Æ´Ï¶ó ½À±âÀÇ È帧À» À¯¹ßÇϱ⠶§¹®ÀÌ´Ù. Æ÷Àå³»ÀÇ ÈëµéÀº º¸Åë ºÒÆ÷È»óÅ·ΠÁ¸ÀçÇÑ´Ù. ±×¸®°í ¿ÀÇ È帧°ú ½À±âÀÇ È帧Àº »óÈ£°£¿¡ º¹ÀâÇÑ ÀÛ¿ëÀ» ÇÏ´Â º¹ÇÕÀûÀÎ °úÁ¤µé·Î ÀÎ½ÄµÇ¾î ¿Ô´Ù. ÀÌ ³í¹®Àº ºÒÆ÷ÈÅä³»ÀÇ º¹ÇÕÀûÀÎ ¿ÀÇ È帧°ú ½À±âÀÇ È帧¿¡ ´ëÇØ À¯ÇÑ¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÑ ÇϳªÀÇ ÀÏÂ÷¿øÀû ºÐ¼®¸ðµ¨À» Á¦½ÃÇÑ´Ù. ÀÌ ¸ðµ¨Àº ¿Âµµ¿Í ÇÔ¼öºñ º¯È»Ó¸¸¾Æ´Ï¶ó ½Ã°£¿¡ µû¸¥ µ¿»óÀ» ¿¹ÃøÇϱâ À§ÇÏ¿© »ç¿ëµÉ ¼ö ÀÖ´Ù. ¿Âµµ ¹× ÇÔ¼öºñÀÇ º¯È ±×¸®°í µ¿»óÀÇ ¿¹ÃøÀº Æ÷ÀåÀÇ ¼³°è ¹× À¯Áö°ü¸®¸¦ À§ÇØ ÀÇ¹Ì ÀÖ´Â ÀÏÀÌ µÉ °ÍÀÌ´Ù. ÀÌ ¸ðµ¨Àº ´Ù¸¥ ¸ðµ¨ÀÇ °á°úµé°ú ºñ±³¸¦ ÅëÇØ¼ °ËÁõµÈ´Ù. |
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| Water content of soils within pavement varies seasonally depending on climatic factors such as rainfall, temperature and so on, since a hydraulic gradient due to rainfall causes moisture flow, and a thermal gradient due to temperature change induces not only heat flow but also moisture flow directly and indirectly. Soils within pavement are usually in an unsaturated state, and heat flow and moisture flow have been recognized as coupled processes with complex interactions between them. This paper presents a one-dimensional analysis model by the finite element method for the coupled heat flow and moisture flow in unsaturated soils. The model can be used to predict not only the change of temperature and water content, but also frist heave with time. It will be a meaningful work for the design and maintenance of pavement to predict the change of the temperature and water content and frist heave. The model is tested through comparisons with the results by other models. |
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| Finite element method;Heat flow;Moisture flow;Soil-water characteristic curve;Unsaturated soil; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.5, 2002³â, pp.67-72
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921407741)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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