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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.5, 2003³â, pp.145-154
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( Estimation of Coefficient of Consolidation Using Piezocone Dissipation Test in Normally Consolidated Clays ) |
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| º» ¿¬±¸¿¡¼´Â Á¤±Ô¾Ð¹ÐÁ¡Åä¿¡¼ÀÇ ÇÇ¿¡Á¶ ÄÜ ¼Ò»ê½ÃÇè½Ã ÃøÁ¤µÈ Ãʱ⠰úÀ×°£±Ø¼ö¾ÐÀ» ÆÈ¸éü ¼öÁ÷ÀÀ·Â($Delta{sigma}_{oct}$)ÀÇ º¯È¿¡ ÀÇÇØ ¹ß»ýÇÏ´Â °úÀ×°£±Ø¼ö¾Ð($Delta{u}_{oct}$)°ú ÆÈ¸éü Àü´ÜÀÀ·Â($Delta{ au}_{oct},$)ÀÇ º¯È¿¡ ÀÇÇØ ¹ß»ýÇÏ´Â °úÀ×°£±Ø¼ö¾Ð($Delta{u}_{shear}$)À¸·Î ±¸ºÐÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© Ãʱ⠰úÀ×°£±Ø¼ö¾Ð ºÐÆ÷¸¦ °¡Á¤Çϰí, ¿¬¼ÓÀûÀÎ ±¸Çü °øµ¿È®Àå À̷аú Ãà´ëĪ ºñÈ¥ÇÕ ¼±Çü ¾Ð¹ÐÀ̷п¡ ±Ù°ÅÇÑ À¯ÇÑÂ÷ºÐ¹ýÀ» »ç¿ëÇÏ¿© °úÀ×°£±Ø¼ö¾ÐÀÇ ¼Ò»ê°Åµ¿À» ¸ð»çÇÏ¿´´Ù. ÀÌ¿Í °°Àº ¹æ¹ý¿¡ ÀÇÇØ ¾Ð¹Ð°è¼ö¸¦ °¡Á¤ÇÏ¿© °è»êµÈ ¼Ò»ê°î¼±ÀÌ ½ÇÃøµÈ ¼Ò»ê°î¼±°ú ƯÁ¤ ¼Ò»êµµ¿¡¼ ÀÏÄ¡Çϵµ·Ï ¹Ýº¹ °è»êÇÏ´Â ½ÃÇàÂø¿À¹ýÀ» »ç¿ëÇÏ¿© ¾Ð¹Ð°è¼ö¸¦ »êÁ¤ÇÏ´Â ¹æ¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. Á¦¾ÈµÈ ¹æ¹ý°ú ±âÁ¸ÀÇ ÀÌ·ÐÇØ¸¦ ·çÀÌÁö¾Ö³ª ÁÖ¸³´ëÇб³ ¸ðÇü ÅäÁ¶¿¡¼ ¼öÇàµÈ ¼ÒÇü ÇÇ¿¡Á¶ ÄÜÀÇ ½ÃÇè°á°ú¿¡ Àû¿ëÇÑ °á°ú¿¡ ÀÇÇϸé Á¦¾ÈµÈ ¹æ¹ý¿¡ ÀÇÇØ »êÁ¤µÈ ¾Ð¹Ð°è¼ö°¡ ´Ù¸¥ ÀÌ·ÐÇØº¸´Ùµµ ½Ç³»½ÃÇèÄ¡¿Í À¯»çÇÑ °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, °èÃøµÈ ¼Ò»ê°î¼±°úµµ Àß ÀÏÄ¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| In this study, the variation in excess pore pressure during dissipation is estimated by using successive cavity expansion theory and finite difference technique based on axisymmetric uncoupled linear consolidation theory with separate consideration of magnitude and initial distribution $Delta{u}_{oct}$induced by changes of octahedral normal stress, and $Delta{u}_{shear}$ induced by changes of octahedral shear stress. The coefficient of consolidation is also estimated by trial and error procedure until the predicted dissipation curve matches the measured curve at a typical degree of dissipation. The proposed method is applied to the results of miniature piezocone tests at Louisiana State University calibration chamber system. Based on the results of interpretation and the comparison with experimental measurements and those from other solutions, the prediction dissipation curves show a good match with those measured during dissipation tests and the values of coefficient of consolidation estimated by proposed method are more close to the range of laboratory measurements than those of other theories. |
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| Ű¿öµå |
| Coefficient of consolidation;Dissipation test;Piezocone; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.5, 2003³â, pp.145-154
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921979152)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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