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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.11, 2008³â, pp.91-100
°í°á¸ð·¡ÀÇ °­µµÁ¤¼ö Æò°¡
( Evaluation of Strength Parameters of Cemented Sand )
À̹®ÁÖ;ÃÖ¼º±Ù;ÀÌ¿ìÁø; °í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â Mohr-Coulomb ÆÄ±«±âÁØ¿¡ µû¶ó °í°á¸ð·¡ÀÇ Àü´Ü°­µµ¸¦ À¯µµÇϰí, »ïÃà ¹× ÀÏÃà¾ÐÃà½ÃÇèÀ¸·Î °ËÁõÇÏ¿´´Ù. ¸ð·¡ÀÇ ¸¶Âû°¢Àº °í°áÀÇ ¿µÇâÀ» ¹ÞÁö ¾ÊÀ¸¸ç, ÀÏÁ¤±¸¼Ó¾Ð ÀÌÇÏ¿¡¼­ °í°á¸ð·¡ÀÇ Á¡Âø·ÂÀº °í°áÁ¤µµ¿¡ µû¶ó ÀÏÁ¤ÇÏ´Ù. µû¶ó¼­ °í°á¸ð·¡ÀÇ Àü´Ü°­µµ´Â ¹Ì°í°á ¸ð·¡ÀÇ Àü´Ü°­µµ¿Í °í°á¸ð·¡ÀÇ ÀÏÃà¾ÐÃà°­µµÀÇ ÇÕÀ¸·Î Ç¥ÇöµÇ¸ç, °í°á¸ð·¡ÀÇ Á¡Âø·ÂÀº ¸¶Âû°¢°ú ÀÏÃà¾ÐÃà°­µµÀÇ ÇÔ¼ö·Î Ç¥ÇöµÇ¾ú´Ù. ¶ÇÇÑ °í°á°áÇÕ ÆÄ±«±¸¼Ó¾Ð ÀÌÈÄÀÎ ÀüÀ̱¸°£¿¡¼­ °í°á¸ð·¡ÀÇ Àü´Ü°­µµ´Â ºñ±³Àû ÀÏÁ¤ÇÏ°Ô À¯ÁöµÈ´Ù°í °¡Á¤ÇÏ¿© ÀüÀ̱¸°£¿¡¼­ °í°á¸ð·¡ÀÇ Àü´Ü°­µµ¿Í Á¡Âø·ÂÀ» À¯µµÇÏ¿´´Ù. ÃßÁ¤µÈ °í°á¸ð·¡ÀÇ Àü´Ü°­µµ¿Í Á¡Âø·ÂÀº ½ÇÇè°á°ú¿Í Àß ÀÏÄ¡ÇÏ¿´´Ù. ½ÇÇè °á°ú´Â ¶ÇÇÑ °í°á¸ð·¡ÀÇ Á¡Âø·Â º¯È­¿¡ Å« ¿µÇâÀ» ¹ÌÄ¡´Â °í°á°áÇÕ ÆÄ±«±¸¼Ó¾ÐÀÌ ÀÏÃà¾ÐÃà°­µµ¿Í ¼±Çüºñ·Ê°ü°èÀÓÀ» º¸¿©ÁØ´Ù.
This study proposes the equations evaluating the shear strength of cemented sand by analytical interpretation based on Mohr-Coulomb failure criteria, and verifies them using the results of triaxial and unconfined compression tests. The internal friction angle of cemented sand is identical to that of uncemented one regardless of the stress level, while the cohesion intercept of cemented sand is constant before the breakage of cementation bonds. Therefore, the shear strength of cemented sand can be represented as a summation of the shear strength of uncemented sand and the unconfined compressive strength of cemented sand. In addition, the cohesion intercept of cemented specimen can be expressed as a function of unconfined compressive strength and friction angle. In the transition zone, assuming a constant shear strength, the equations to evaluate shear strength and cohesion intercept of cemented sand are also represented. It is observed that the predicted values using these solutions agree well with the experimental results. The experimental results also show a linear relationship between the unconfined compressive strength and the breaking point of cementation bonds.
 
Ű¿öµå
Breaking point;Cementation;Cohesion intercept;Prediction equation;Shear strength;Unconfined compressive strength;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.11, 2008³â, pp.91-100
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200806135608622)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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