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Çѱ¹Áö¹Ý°øÇÐȸ / v.14, no.4, 1998³â, pp.47-60
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ÀÏÁ¤º¯Çë·ü ¹× Ç¥ÁؾйнÃÇèÀ» ÀÌ¿ëÇÑ ÇØ¼ºÁ¡ÅäÀÇ ¾Ð¹ÐƯ¼º ¿¬±¸
( Study on the Consolidation Characteristics of Marine Clay by CRS and Conventional Tests ) |
| ÀÌ¿ìÁø;ÀÓÇü´ö;ÀÌ¿øÁ¦; °í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;°í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú ¹Ú»ç°úÁ¤, °í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú ¹Ú»ç°úÁ¤ ¼ö·á;;
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| º» ¿¬±¸¿¡¼´Â ³²ÇØ¾È ÇØ¼ºÁ¡ÅäÀÇ ÀÏÁ¤º¯Çü·ü ¾Ð¹ÐƯ¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇØ Ç¥ÁؾйнÃø°ú º¯Çü·ü ¼Óµµ°¡ ´Ù¸¥ ÀÏÁ¤º¯ÇüÀ² ¾Ð¹Ð½ÃÇèÀ» ¼öÇàÇϰí ÀÌµé °á°ú¸¦ ºñ±³.ºÐ¼®ÇÏ¿´´Ù. Ç¥ÁؾйнÃÇè ¹× ÀÏÁ¤º¯ÇüÀ² ½ÃÇè¿¡¼ ¼±Çà¾Ð¹ÐÇÏÁßÀ» »êÁ¤Çϱâ À§ÇÏ¿© ¿©·¯ Á¦¾ÈµÈ ¹æ¹ýÀ» »ç¿ëÇÏ¿´À¸¸ç °¢ ¹æ¹ýÀÇ Àû¿ë¼ºÀ» °ËÅäÇÏ¿´´Ù. ¶ÇÇÑ, º¯Çü·ü ¼Óµµ°¡ ÀÀ·Â-º¯Çü¹Ä °ü°è, °£±Ø¼ö¾Ð, ±×¸®°í ¼±Çà¾Ð¹Ð ÇÏÁß¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù. ÇØ¼®°á°ú¿¡ ÀÇÇÏ¸é ¾Ð¹Ð°î¼±ÀÇ ºÐÆ÷¿Í ¼±Çà¾Ð¹ÐÇÏÁߺñ($a_2=sigma'_{pCRS}/sigma'_{pConv}$)´Â º¯Çü·ü ¼ÓµµÀÇ ¿µÇâÀ» ¹ÞÁö¸¸, Á¤±Ô¾Ð ¹Ð±¸°£ÀÇ ¾ÐÃàÁö¼ö´Â »ó´ëÀûÀ¸·Î º¯Çü·ü ¼ÓµµÀÇ Å©±â¿Í ¹«°üÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÇØ¼ºÁ¡ÅäÀÇ ¼±Çà¾Ð¹ÐÇÏÁߺñ´Â º¯Çü·ü ¼ÓµµÀÇ ´ë¼öÃàô¿¡ ºñ·ÊÇÏ¿© Áõ°¡ÇÏ´Â °ÍÀ¸·ÎÀÇ º¯Çü·ü ¼Óµµ¿¡¼ Æò±ÕÀûÀ¸·Î 1.11~1.30ÀÇ ºÐÆ÷¸¦ º¸¿´´Ù. ÀÏÁ¤º¯Çü·ü ¾Ð¹Ð½ÃÇè¿¡¼ °£±Ø¼ö¾Ðºñ´Â º¯ÇüÇà ¼Óµµ°¡$6.67 imes10^{-4}$ %secÀÏ ¶§¸¦ Á¦¿ÜÇϰí´Â 6.0%¸¦ ÃʰúÇÏÁö ¾Ê´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Á¤±Ô¾Ð¹Ð±¸°£ÀÇ ¾ÐÃàÁö¼ö, ¾Ð¹Ð°è¼ö¿Í Åõ¼ö°è¼ö´Â °¢°¢ 0.59~0.95, $0.56 imes10^{-3}~3.0 imes10^{-3} cm^2/sec,; ±×¸®°í ;2.0 imes10^4~7.0 imes10^{-4} cm/sec$ÀÇ ºÐÆ÷¸¦ º¸¿´´Ù. |
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| A series of conventional tests and CRS consolidation tests with different rates of strain were performed to investigate the consolidation characteristics of marine clay. Preconsolidation pressures were evaluated by applying previously proposed methods for both the conventional tests and CRS tests results in order to check the legitimacy of those methods. The effects of strain rate on effective consolidation stress strain relationship, porewater pressure, and preconsolidation pressure were also discussed It was found that the effective stress strain relationship and the preconsolidation pressure are a function of strain rate imposed during consolidation test, but compression index isn't. The preconsolidation pressure ratio ($a_2=sigma'_{pCRS}/sigma'_{pConv}$)of marine clay appears proportional to the logarithm of strain rate, with average values ranging from 1.11 to 1.30 for strain rates between $1 imesx10^{-4} %/sec; and; 4 imes10 %/sec$. The porewater pressure ratio during CRS teats does not exceed 6.0% except when the strain rate is $6.67 imes10^{-4} %/sec$. Coefficient of consolidation or coefficient of permeability at normally consolidated range was not affected by the type of consolidation tests and the strain rate. Typical values of compression index (C.), coefficient of consolidation(c.), and coefficient of permeability (k.) at normally consolidated range were 0.56-0.95, $0.56 imes10^{-4}~3.0 imes10^{-4}cm2/sec,; and; 2.0 imes10^{-8}~7.0 ime10^{-4}cm/sec,$ respectively. |
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| Ű¿öµå |
| CRS consolidation test;Conventional test;Rates of strain;Preconsolidation pressure;Preconsolidation pressure ratio; |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.14, no.4, 1998³â, pp.47-60
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920448227)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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