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Çѱ¹Áö¹Ý°øÇÐȸ / v.8, no.2, 1992³â, pp.71-80
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Á¤±Ô¾Ð¹ÐÁ¡ÅäÀÇ ÀÀ·Â -º¯Çü·ü ±¸¼º ¹æÁ¤½Ä
( A Constitutive Model for Normally Consolidated Clays ) |
| ÀÌ¿µÈÖ; Á¤È¸¿ø, ¿µ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| Á¤±Ô¾Ð¹ÐÁ¡ÅäÀÇ °Åµ¿À» ¿¹ÃøÇϱâ À§ÇÑ »õ·Î¿î ±¸¼º¹æÁ¤½ÄÀÌ Á¦¾ÈµÇ¾úÀ¸¸ç, ±× °ñ°ÝÀº Roscoe ¿Í PoorooshasbÀÇ ÁõºÐÀÀ·Â-º¯Çü·üÀÌ·ÐÀÇ ±âº»°³³ä¿¡ ±Ù°Å¸¦ µÎ°íÀÖ´Ù. ºñ¹è¼ö Á¶°Ç¿¡¼ÀÇ À¯È¿ÀÀ·Â°æ·ÁÆùtÀº »õ·Î¿î °£±Ø¼ö¾Ð°è¼ö(C)¸¦ ÀÌ¿ëÇÏ¿© À¯µµµÇ¾ú°í, ¿©±â ¿¡¼ °£±Ø¼ö¾Ð°è¼ö´Â Ç¥ÁØÈ¹¡ °£±Ø¼ö¾Ð°ú ÀÀ·ÂÀÇ °ü°è¿¡¼ Á÷¼±ÀÇ ±â¿ï±â·Î Ç¥½ÃµÈ´Ù. ºñ¹è ¼ö ÀÀ·Â°æ·Î¿Í ÀÏÁ¤ÀÀ·Âºñ°æ·Î(constant stress ratio path)¸¦ µû¶ó ¹ß»ýÇÏ´Â ÀÀ·ÂÀÇ Áõ°¡·®À» ¾Ë°ÔµÇ¸é, À̶§ÀÇ Ã¼Àûº¯Çü·üÀº °£±Øºñ-´ë¼öÆò±Õ ¿¬Á÷ ÀÀ·Â(e-dnp) °ü°èÀÇ ¼±Çü Ư¼ºÀ¸·ÎºÎ ÅÍ °è»êµÉ ¼ö ÀÖ´Ù. ¶ÇÇÑ Roscoe¿Í BurlandÀÇ ¼öÁ¤ Cam-clay À̷п¡¼ À¯µµµÈ À¯µ¿¹ýÄ¢(flow rule)À» Àû¿ëÇÏ¿© ÀÓÀÇ ÀÀ·ÂÁ¡¿¡¼ÀÇ Àü´Üº¯Çü·üÀ» ¿¹ÃøÇÒ ¼ö ÀÖ´Ù. |
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| A new constitutive model is proposed for normally consolidated clays. A main skeleton of the proposed model is based on the concepts of the incremental stress-strain theory by Roscoe and Poorooshasb. The equation of the undrained stress path is formulated by introducing the new pore pressure parameter(C), which is the slope of the linear line in the plot of the normalized pore pressure against the stress ratio. Once the stress increment along the constant stress ratio path (followed by untrained stress path) is know, the volumetric strains are calculated from the linear characteristics between void ratio and logarithm of the mean normal stress for any stress ratio. Then the incremental shear strains are successfully predicted by applying the flow rule derived in the modified theory by Roscoe and Burland. |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.8, no.2, 1992³â, pp.71-80
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199211920444578)
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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