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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.85-93
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º¯°îÁ¡¹ý¿¡ ÀÇÇÑ ½Å¼Ó ¾Ð¹Ð½ÃÇè
( Rapid Consolidation Test Using Inflection Point Method ) |
| ¹Î´ö±â;Ȳ±¤¸ð;ÃÖ±Ôȯ; ¿ï»ê´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;°æºÏÀü¹®´ëÇÐ °Ç¼³È¯°æ°ú;¿ï»ê´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;
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| º» ¿¬±¸¿¡¼´Â Cour(1971)°¡ Á¦¾ÈÇÑ º¯°îÁ¡¹ý(Inflection Point Method)À» ÀÌ¿ëÇÏ¿© ¾Ð¹Ð°è¼ö¸¦ ¿¹ÃøÇϱâ À§ÇÑ »õ·Î¿î ¹æ¹ýÀ» ¼Ò°³ÇÏ¿´´Ù. ¿©±â¼, º¯°îÁ¡Àº ¾Ð¹Ðµµ(U)¿Í ½Ã°£°è¼ö(log T) °ü°è°î¼±ÀÇ º¯°îÁ¡ Áß¿¡¼ ¾Ð¹Ðµµ($U_i$)°¡ 70.03% ÀÏ ¶§ÀÇ ½Ã°£°è¼ö $T_i$=0.405¿¡ »óÀÀÇÏ´Â Á¡ÀÌ´Ù. Á¦¾ÈµÈ º¯°îÁ¡¹ý¿¡ ÀÇÇÑ ½Å¼ÓÇÑ ¾Ð¹Ð½ÃÇè ¹æ¹ý¿¡¼ °¢ ´Ü°èº° ÇÏÁßÀçÇÏ´Â º¯°îÁ¡À» È®ÀÎÇÑ Á÷ÈÄ¿¡ ÀÌ·ç¾îÁö¹Ç·Î ¾Ð¹Ð½ÃÇè¿¡ ¼Ò¿äµÇ´Â ½Ã°£À» ´ÜÃà½Ãų ¼ö ÀÖÀ¸¸ç, ¾Ð¹Ð°è¼ö¸¦ ºü¸¥ ½Ã°£ ³»¿¡ ½±°Ô ±¸ÇÒ ¼ö ÀÖ´Ù. ÀÌ ½Å¼ÓÇÑ ¾Ð¹Ð½ÃÇè¹ý¿¡ ¼Ò¿äµÇ´Â ½Ã°£Àº ±âÁ¸ÀÇ ¾Ð¹Ð½ÃÇèÀÇ °æ¿ì 1ÁÖ ¶Ç´Â, 2ÁÖÀÇ ±â°£ÀÌ ¼Ò¿äµÇ´Âµ¥ ºñÇÏ¿© 0.5½Ã°£~9½Ã°£ÀÌ ¼Ò¿äµÇ¹Ç·Î ¾Ð¹Ð½ÃÇèÀ» º¸´Ù ½Å¼ÓÈ÷ ¿Ï·áÇÒ ¼ö ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â º¸´Ù Á¤±ÔÈµÈ °á°ú¸¦ ¾ò°íÀÚ Ä§°ÀåÄ¡¸¦ °í¾ÈÇÏ¿´À¸¸ç, ±× °á°úÀÇ ºÐ¼®¿¡¼ ºñ ±³¶õ½Ã·áÀÇ ¾Ð¹ÐÁ¤¼öµé°ú Àß ºÎÇÕÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| This study presented a new method for evaluating the coefficient of consolidation by using inflection point method which was based on the fact that time factor, T corresponding to the inflection point of a semi-logarithmic plot of a time curve is fixed and equals to T = 0.405 at 70.03% consolidation. In the proposed method, as the next load increment is applied as soon as the inflection point is confirmed, the time required to identify the inflection point can be shortened. Thus, the coefficient of consolidation may be easily evaluated. The time required to complete the testing using this rapid consolidation method could be as low as 0.5~9 hours compared with 1 or 2 weeks in the case of the conventional consolidation test. For this study, we designed settlement equipment for normalization of test samples. In test results, the factors of consolidation agreed with undisturbed samples results. |
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| Ű¿öµå |
| Coefficient of consolidation;Rapid inflection point method;Settlement equipment; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.85-93
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921341962)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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