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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.8, 2005³â, pp.37-43
ÀϹÝÈ­µÈ Hoek-Brown ¸ðµ¨ÀÇ Á¤½ÄÈ­ ¹× Rounded Hoek-Brown ¸ðµ¨ÀÇ °³¹ß
( Formulation of Generalized Hoek-Brown Model and Development of Rounded Hoek-Brown Model )
±è¹ü»ó;±Ç¿À¼ø;ÀåÀμº; Æ÷½ºÄڰǼ³ Åä¸ñȯ°æ»ç¾÷º»ºÎ Åä¸ñ±â¼úÆÀ;Çѱ¹Çؾ翬±¸¿ø ¿¬¾ÈÇ׸¸°øÇבּ¸º»ºÎ;Çѱ¹Çؾ翬±¸¿ø ¿¬¾ÈÇ׸¸°øÇבּ¸º»ºÎ;
 
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¾Ï¹ÝÀÇ °Åµ¿À» ¿¹ÃøÇϱâ À§ÇØ 1980³â ¹ßÇ¥µÈ Hoek-Brown ¸ðµ¨Àº Áö¼ÓÀûÀÎ °³¼±°ú ´õºÒ¾î ¼ö¸¹Àº ¹®Á¦µéÀ» ÇØ°áÇϱâ À§ÇØ ³Î¸® »ç¿ëµÇ°í ÀÖ´Ù. ±×·¯³ª Hoek-Brown ¸ðµ¨ÀÇ À¯ÇÑ¿ä¼Ò¹ý µî ¼öÄ¡ÇØ¼®¿¡ ´ëÇÑ Àû¿ë¼º¿¡ °üÇÑ ¿¬±¸´Â ¹Ì¹ÌÇÑ ½ÇÁ¤ÀÌ´Ù. º» ³í¹®¿¡¼­´Â Hoek-Brown ¸ðµ¨À» ÀϹÝÀû ¼Ò¼º·Ð ÀýÂ÷¿¡ µû¶ó ±¸¼º¸ðµ¨·Î Á¤½ÄÈ­ÇÏ¿© ±× Ư¡À» »ìÆìº¸¾Ò°í, ¼öÄ¡Àû ¹®Á¦Á¡À» À¯¹ßÇÏ°Ô µÇ´Â Ç׺¹¸éÀÇ ¸ð¼­¸®ºÎ¸¦ °î¸éÀ¸·Î ó¸®ÇÑ Rounded Hoek-Brown ¸ðµ¨À» Á¦½ÃÇÏ¿´´Ù. Á¦¾È¸ðµ¨Àº ź¼Ò¼º ±¸¼º¸ðµ¨·Î¼­ÀÇ ¿ä±¸Á¶°ÇµéÀ» ¸¸Á·Çϸç, ¾ÐÃàÃø¿¡¼­ ¿ø·¡ÀÇ Hoek-Brown ¸ðµ¨°ú µ¿ÀÏÇÑ Ç׺¹¸éÀ» °®´Â´Ù. Á¦¾È ¸ðµ¨À» ÀϹÝÀûÀÎ ºñ¼±Çü À¯ÇÑ¿ä¼ÒÇØ¼®¿¡ Àû¿ëÇϱâ À§ÇÏ¿© Á¦¾È ¸ðµ¨ÀÇ ±¸¼º¹æÁ¤½ÄÀ» ¼ö¸³ÇÏ¿´´Ù.
Hoek-Brown model, which was developed in order to predict the behavior of rock mass, has widely been utilized and revised by many researchers to solve various problems encountered in tunnelling and slope stability analysis. However, there is no schematic investigation on the application of the Hoek-Brown model to numerical analysis including finite element simulations. In this paper the Hoek-Brown model was formulated as a constitutive model according to the procedure of generalized plasticity theory, and a Rounded Hoek-Brown model, which could overcome the numerical difficulties by modifying the edge part of the yield surface as a curve shape, was newly proposed. The new model could satisfy the requirements as an elasto-plastic constitutive soil model and follow the yield surface of the original Hoek-Brown model in the compression mode. The constitutive equation for the proposed model herein was established and presented to be applicable to the generalized nonlinear finite element analysis.
 
Ű¿öµå
Hoek-Brown model;Constitutive model;Rounded Hoek-Brown model;Yield surface;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.8, 2005³â, pp.37-43
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200507523322306)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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