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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.1, 1999³â, pp.151-160
½Ç³»½ÃÇèÀ» ÅëÇÑ ±¤¾ç¸¸ Á¡ÅäÀÇ ¾Ð¹Ð ¹× Àü´ÜƯ¼ººÐ¼®
( Analysis of Consolidation and Shear Characteristics for the Kwangyang Bay Clay )
ÀÌ¿µÈÖ;±è¿ëÁØ;±è´ë±æ; ¿µ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¿µ³²´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;(ÁÖ)¿ì´ë±â¼ú´Ü;
 
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±¤¾ç¸¸ÀÇ ÇØÀú¿¡¼­ äÃëÇÑ Á¡¼ºÅä½Ã·áÀÇ ¹°¸®Àû ¼ºÁú°ú ¿ªÇÐÀû Ư¼ºÀ» ±Ô¸íÇϱâ À§ÇÑ ÀÏ·ÃÀÇ ½Ç³»½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ÁÖ¿ä ½ÃÇè³»¿ëÀº Á¦¹Ý ¹°¸®Àû ¼ºÁú½ÃÇè, Ç¥ÁؾйнÃÇè, ºñ¹è¼ö ¹× ¹è¼ö »ïÃà½ÃÇè(CIU, CID) µîÀÌ´Ù. ÅëÀϺзù¿¡ ÀÇÇϸé CL, CH·Î ±¸ºÐµÇ´Â ±¤¾ç¸¸ Á¡Åä´Â ÀÚ¿¬ÇÔ¼öºñ, 38.3~84.6%, ¾×¼ºÁö¼ö, 0.71~0.98 ÀÌ°í °ú¾Ð¹Ðºñ°¡ 1.06~l.60ÀÎ ½ÇÁúÀûÀÎ Á¤±Ô¾Ð¹Ð»óŶó°í º¼ ¼ö ÀÖ´Ù. ºñ¹è¼ö »ïÃà½ÃÇè¿¡¼­ÀÇ À¯È¿ÀÀ·Â°æ·Î´Â (q, p)°ø°£¿¡¼­ µî¹æ¾Ð¹ÐÀÀ·Â($p_0$) À¸·Î ±ÔÁØÈ­µÇ°í, µî Àü´Üº¯Çü·ü¼±Àº ¿øÁ¡À» Åë°úÇÏ¸ç ¼±ÇüÀûÀÌ´Ù. ºñ¹è¼ö Àü´Üº¯Çü·ü($varepsilon$)Àº ÀÀ·Âºñ($eta$) ¸¸ÀÇ ÇÔ¼öÀ̰í, ($varepsilon/eta, eta$) °ø°£¿¡¼­ ÀýÆí°ªÀ» °®´Â Á÷¼±À¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ, µî¹æ¾Ð¹ÐÀÀ·ÂÀ¸·Î ±ÔÁØÈ­µÈ °£±Ø¼ö¾Ðµµ ÀÀ·Âºñ¿¡ ´ëÇÏ¿© Á÷¼±À̰í, ±× ±¸¹è, C´Â °£±Ø¼ö¾Ð ¸Å°³º¯¼ö·Î Á¤ÀÇµÉ ¼ö ÀÖ´Ù. À̻󿡼­ ±â¼úµÈ °æÇâÀ» ±Ù°Å·Î ÇÏ¿© ºñ¹è¼ö ÀÀ·Â°æ·Î ¹× Àü´Üº¯Çü·üÀ» ¿¹ÃøÇÒ ¼ö ÀÖ´Â °è»ê½ÄÀ» Á¦¾ÈÇÏ¿´°í, Á¦¾È½Ä¿¡ ÀÇÇÏ¿© °è»êµÈ ÀÀ·Â°æ·Î¿Í Àü´Üº¯Çü·üÀº ±âÁ¸ÀÇ Cam-clayÀÌ·Ð º¸´Ù ½ÇÃøÄ¡¿¡ ´õ °¡±î¿î °ªÀ» ÁÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¹è¼ö½ÃÇè °á°ú¿¡¼­ ¾ò¾îÁø ÀÀ·Â°æ·Î »óÀÇ ÆÄ±«Á¡Àº ºñ¹è¼ö ÀÀ·Â°æ·ÎÀÇ ÇѰè»óż±°ú µ¿ÀÏ ¼±»ó¿¡ À§Ä¡Çϸç, ÀÌ »ç½ÇÀº ÇѰè»óÅÂÀÌ·ÐÀÇ ±âº» °³³ä°ú ÀÏÄ¡ÇÑ´Ù.
A series of laboratory tests for the marine clay sampled under the sea of Kwangyang bay have been conducted. The main types of tests are the general index property tests, the oedometer tests and the triaxial compression tests in both undrained(CIU) and drained(CID) conditions. The clayey samples, classified as CL, CH with natural water content of 38.3~84.6% and liquidity index of 0.71~0.98, are in the normally consolidated state with O.C.R. of 1.0l~l.60. The undrained stress path from CIU tests can be normalized with isotropic consolidation pressure$(p_0)$ and equal shear strain contour is linear passing through the origin in the (q, p) plot. The undrained shear strain is found to be the only function of the stress ratio($eta$) and linear with intercept in the ($varepsilon/eta,eta$) plot. The built-up pore pressure normalized with pc is also linear with respect to $eta$. and its slope is defined by ¢¥C¢¥ as a pore pressure parameter. Equations to predict the undrained stress path and the shear strain are proposed. It is proved that the proposed equations give better agreements to the measured values than the Cam-clay theories. The failure points of the stress path are located on the same C.S.L. in (q, p) plot during both CIU and CID tests, which justifies the concept of critical state theory.
 
Ű¿öµå
Marine clay;Oedometer test;CIU;CID;Pore pressure parameter;Effective stress path;Equal shear strain contour;Cam-clay theory;Hyperbolic equation;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.1, 1999³â, pp.151-160
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921748970)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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