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Çѱ¹Áö¹Ý°øÇÐȸ / v.12, no.6, 1996³â, pp.153-162
À̹æ°ú¾Ð¹ÐÁ¡ÅäÀÇ ºñ¹è¼öÅ©¸®ÇÁÆÄ±«
( V%drained Creep Rupture of an Anisotropically Overconsolidated Clay )
°­º´Èñ;¿À¼±È£; Á¤È¸¿ø, ÀÎÇÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Á¤È¸¿ø, ´ë¿ì¿£Áö´Ï¾î¸µ Áö¹Ý°øÇкÎ;
 
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À̹æ¾Ð¹ÐÀÌ °ú¾Ð¹ÐÁ¡ÅäÀÇ ºñ¹è¼öÅ©¸®ÇÁÆÄ±«°Åµ¿¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¿¬±¸Çϱâ À§ÇÏ¿© µî¹æ ¹× À̹æ°ú¾ÐÀϽÃŲ Á¡Åä½Ã·á¿¡ ´ëÇØ¼­ ºñ¹è¼ö»óÅ¿¡¼­ Å©¸®ÇÁ½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ¿¬±¸°á°ú ºñ¹è¼ö Å©¸®ÇÁÆÄ±«°Åµ¿Àº Á¡Åä½Ã·áÀÇ ÀÀ·ÂÀÌ·Â Áï °ú¾Ð¹Ðºñ¿Í ¾Ð¹ÐÀÀ·Âºñ$(sigma_{3c}/sigma_{le})$ÀÇ Å©±â¿¡ ÀÇÇØ¼­ ¿µÇâÀ» Å©°Ô ¹Þ´Â´Ù´Â »ç½ÇÀÌ ¹àÇôÁ³´Ù. Áï Á¡ÅäÀÇ Å©¸®ÇÁ°­µµ´Â °ú¾Ð¹Ðºñ¿Í ¾Ð¹ÐÀÀ·Âºñ°¡ Ŭ¼ö·Ï Áõ°¡ÇϹǷΠÁ¤ÁöÅä¾Ð°è¼ö°¡ 1.0º¸´Ù ÀÛÀº Á¡ÅäÁö¹ÝÀÇ Å©¸®ÇÁÆÄ±« °¡´É¼ºÀ» µî¹æ¾Ð¹ÐÅ©¸®ÇÁÇÇ ±«½ÃÇè¿¡ ÀÇÇØ¼­ ÆÇ´ÜÇÏ´Â °ÍÀº À§ÇèÇÏ´Ù. ±×¸®°í Á¡ÅäÀÇ Å©¸®ÇÁ°­µµ´Â °ú¾Ð¹Ðºñ¿Í ¾Ð¹ÐÀÀ·ÂºñÀÇ Å©±â¿¡ °ü°è¾øÀÌ Finn°ú Shead(1973)ÀÇ Á¦¾È½Ä¿¡ ÀÇÇÑ »óÇÑÇ׺¹°­µµ·Î¼­ ±¸ÇÒ ¼ö ÀÖ¾ú´Ù.
The undrained creep tests with isotropically and anisotropically overconsolidated clays were performed to investigate the effects of anisotropic consolidation on the undrained creep rupture behavior. Results of tests showed that the undrained creep rupture behaviors were iuluenced significantly by stress history including overconsolidation ratio and consolidation pressure ratio$(sigma_{3c}/sigma_{le})$. That is. the creep strength of clay increases with the increase of both overconsolidation ratio and consolidation pressure ratio. It, therefore, is dangerous to decide the possibility of creep rupture of clay by the isotropically consolidated creep rupture test in the case of the coefficient of earth pressure lower than 1.0. And the creep strength of clay could be obtained by the equation of the upper yield strength suggested by Finn and Shead(1973) irrespective of both overconsolidation ratio and consolidation pressure ratio.
 
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Overconsolidated clay;Undrained creep rupture behavior;Anisotropic consolidation;Consolidation pressure ratio;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.12, no.6, 1996³â, pp.153-162
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920447051)
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