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Çѱ¹µµ·ÎÇÐȸ / v.8, no.2, 2006³â, pp.87-93
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( Effects of Water Content and Dry Unit Weight on Deformational Characteristics of Subgrade Soils ) |
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| ±¹³» ³ë»óÅäÀÇ º¯ÇüƯ¼º¿¡ ´ëÇÑ °ÇÁ¶´ÜÀ§Áß·®°ú ÇÔ¼öºñÀÇ ¿µÇâÀ» Æò°¡ÇϰíÀÚ 4Á¾ÀÇ ³ë»óÅä¿¡ ´ëÇØ ´Ù¾çÇÑ ÇÔ¼öºñ ¹× °ÇÁ¶´ÜÀ§Áß·® Á¶°Ç¿¡¼ °øÁøÁÖ/ºñƳÀü´Ü½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. °ÇÁ¶´ÜÀ§Áß·®Àº ź¼º°è¼ö´Â ¹°·Ð Á¤±ÔÈź¼º°è¼ö °¨¼Ò°î¼± ¸ðµÎ¿¡ ¿µÇâÀ» ÁÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Á¤±ÔÈ Åº¼º°è¼ö´Â ´ÙÁüµµ°¡ 5% Áõ°¡ÇÔ¿¡ µû¶ó ¾à 20% °¨¼ÒÇÏ¿´´Ù. ±¹³» ³ë»óÅäÀÇ Åº¼º°è¼ö´Â ÇÔ¼öºñ°¡ $pm$2% º¯È ¹üÀ§¿¡¼ 40% ÀÌ»ó º¯ÈÇÏ¿´À¸¸ç. Áö¼ö¸ðµ¨À» Àû¿ëÇÏ¿© Æò°¡ ÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. ±×·¯³ª Á¤±ÔÈź¼º °è¼ö °¨¼Ò°î¼±Àº ÇÔ¼öºñÀÇ ¿µÇâÀ» ¹ÞÁö ¾Ê¾Ò´Ù. ¶ÇÇÑ, ź¼º °è¼ö¿¡ ´ëÇÑ ÇÏÁßÁ֯ļö ¹× ±¸¼ÓÀÀ·ÂÀÇ ¿µÇâ Æ¯¼ºÀº ½ÃÆíÀÇ °ÇÁ¶´ÜÀ§Áß·®°ú ÇÔ¼öºñ º¯È¿¡ °ÅÀÇ ¿µÇâÀ» ¹ÞÁö ¾Ê´Â °ÍÀ¸·Î ³ªÅ¸³ª ¼·Î µ¶¸³ÀûÀÎ ¿ä¼Ò·Î °í·ÁÇÒ ¼ö ÀÖÀ½À» ¾Ë¾Ò´Ù. |
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| To evaluate the deformational characteristics of subgrade soils, four subgrade samples in Korea were tested using the RC and TS tests with various dry unit weight and water content. Both the maximum modulus and normalized modulus reduction curves of subgrade soils were affected by the dry unit weight. The normalized modulus was decreased about 20% with increasing of relative compaction of 5%. It was founded that the variations of modulus of subgrade soils in Korea were over 40% with water content variation of $pm$2%, and those effects can be estimated by exponential model. However, the normalized modulus reduction curves were almost identical and independent of water content. It was also founded that confining pressure, loading frequency, dry unit weight, and water content have an affect on modulus of subgrade soils independently. Therefore, it can be considered that those effects are independent variables. |
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| ³ë»óÅä;º¯ÇüƯ¼º;ÇÔ¼öºñ;°ÇÁ¶´ÜÀ§Áß·®;subgrade soils;deformational characteristics;water content;dry unit weight; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.8, no.2, 2006³â, pp.87-93
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200629734259181)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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