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Çѱ¹Áö¹Ý°øÇÐȸ / v.8, no.4, 1992³â, pp.67-80
Àß ºÎ¼­Áö´Â ¸ð·¡ÀÇ µ¿ÀûÀü´Üź¼º°è¼ö
( Dynamic Shear Modulus of Crushable Sand )
À±¿©¿ø; Á¤È¸¿ø, ÀÎÇÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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µ¿ÀûÀÎ ¹®Á¦¸¦ ÇØ¼®ÇÏ´Â µ¥ À־ ÃÖ´ëÀü´Üź¼º°è¼öÀÇ °áÁ¤Àº ¾î¶² º¯Çü·ü¿¡¼­ÀÇ Àü´ÜÀÀ·ÂÀ» ÃßÁ¤Çϴµ¥ ÇÊ¿¬ÀûÀ̶ó ÇÒ ¼ö ÀÖ´Ù. ±×µ¿¾È ½Ç¸®Ä«Áú ¸ð·¡¿¡ °üÇÑ ¸ðµ¨ÀÌ ÁØ½ÃµÇ¾î ¿ÔÁö¸¸ ±×·¯ÇÑ ¸ðµ¨À» ºÎ¼­Áö´Â ¸ð·¡¿¡ Á÷Á¡ÀûÀ¸·Î Àû¿ëÇÏ´Â µ¥´Â ¸ð·¡ÀÇ ºÎ¼­Áü(crushability)¶§¹®¿¡ ¾î·Á¿òÀÌ ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ºÎ¼­Áö´Â ¸ð·¡ÀÇ ¹Ì¼Òº¯Çü·ü¿¡¼­ÀÇ µ¿ÀûÀÎ °Åµ¿ÀÌ Æò°¡µÇ¾úÀ¸¸ç ½ÇÇèÇÑ ¸ð·¡ÀÇ ÃÖ´ë Àü´Üź¼º °è¼ö¿¡ °üÇÑ ¸ðµ¨ÀÌ Á¦½ÃµÇ¾ú´Ù. ºÎ¼­Áö´Â ¸ð·¡ÀÇ Àü´Üź¼º °è¼ö´Â ´À½¼ÇÑ ¸ð·¡ÀÇ °æ¿ì´Â ½Ç¸®Ä«Áú ¸ð·¡¿Í À¯»çÇÑ °ªÀ» º¸À̳ª ¹Ðµµ°¡ Áõ°¡Çϸé ÀÔÀÚ°£ÀÇ Á¢Ã˸éÀûÀÌ Ä¿Á®¼­ ºñƲ·Â (torsional force)À¸·Î ÀÎÇØ ¸ð·¡°¡ ºÎ¼­Á® Àü´ÜÀúÇ×ÀÌ ÀÛ¾ÆÁö´Â °ÍÀ¸·Î º¸ÀδÙ. ±×¸®°í °è¼öÄ¡ (modulus number) °¡ Been°ú Jefferies (1985)ÀÇ »óÅ Á¤¼ö (state parameter)·Î Ç¥ÇöµÇ¾ú´Ù.
In the analysis of dynamic problem, determination of mazimun shear modulus is essential for the estimation of shear stress at any strain level. Although many models for silica sands were presented, the direct accomodation of those models to crushable sand would be difficult because of crushability during torsion. In this research dynamic behaviour of tested sand is presented. The shear modulus of loose crushable sand shows similar results to silica sand. However, as the density of crushable sand increases the shear modulus decreases because of crushability by increasing surface contact area. And modulus number is expressed in terms of state parameter by Been and Jefferies (1965).
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.8, no.4, 1992³â, pp.67-80
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199211920444815)
¾ð¾î : Çѱ¹¾î
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