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Çѱ¹Áö¹Ý°øÇÐȸ / v.8, no.1, 1992³â, pp.19-28
°í º¯Çü·ü ¹Ýº¹ Áøµ¿ÀÌ ¸ð·¡ÀÇ Àü´Ü ź¼º°è¼ö¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effects of Hihh Amplitude Prestraining Vibrations on Shear Modulus of Sands )
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ÃÖ±Ù °íµµ·Î Á¶ÀýµÈ »óÅ ¿¡¼­ ºñƲ¸² ´Ü¼ø Àü´Ü ½ÇÇè °ú °øÁøÁÖ ½ÇÇèÀ» ÇÔ²² ¼öÇàÇÒ ¼ö ÀÖ´Â ½ÇÇè ÀåÄ¡°¡ The University of Tezas at Austin(¹Ì±¹)¿¡¼­ °³¹ßµÇ¾ú´Ù. º» °í¿¡¼­´Â ÀÌ ½ÇÇèÀåÄ¡¸¦ ÀÌ¿ëÇÏ¿© °í º¯Çü·ü Áøµ¿À» µÇÇ®ÀÌ ÇØ¼­ ¹ÞÀº ±ú²ýÇÑ ¸ð·¡ÀÇ µ¿Àû Ư¼ºÀ» ½ÇÇèÀûÀ¸·Î »ìÆìº¸¾Ò´Ù. ±× °á°ú °í º¯Çü·ü Áøµ¿À» µÇÇ®ÀÌ ÇØ¼­ ¹ÞÀ»¼ö·Ï,¸ð·¡ÀÇ Àú º¯Çü·ü Àü´Ü ź¼º°è¼ö´Â °£±ØºñÀÇ º¯È­°¡ ¾øÀÌ Á¡ÁøÀûÀ¸·Î Áõ°¡ µÇ¾úÀ¸¸ç, ±¸¼Ó ¾Ð·Â¿¡ ´ëÇÑ Ã¼Àû º¯È­ ¶ÇÇÑ ¿ø½Ã ½Ã·áÀÇ ±×°Íº¸´Ù ÁÙ¾îµå´Â °æ ÇâÀ» ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ ±¸¼Ó ¾Ð·Â ¿¡ ´ëÇÑ Àü´Ü ź¼º°è¼öÀÇ º¯È­µµ ¿ø½Ã ½Ã·áÀÇ ±×°Íº¸ ´Ù ÁÙ¾îµå´Â °æÇâÀ» º¸¿´´Ù. ÀÌ»óÀÇ °á°úµéÀº ÀÌ·ÐÀû °á°úµé°úµµ Àß ÀÏÄ¡ÇÏ´Â Çö»óÀ» ³ªÅ¸³»¾ú´Ù.
Recently, testing equipment which can run resonant column test altogether with the torsional shear test at the very highly controlled condition was developed at the University of Texas at Austin(U.S.A). With this equipment, the effects of high amplitude pre-straining vibrations on the dynamic properties of clean sands were studied. Tests showed the following results. Low amplitude shear modulus was gradually increased with little void ratio change as the number of high amplitude vibration cycles increased. Variation of volumetric strain with confining pressure for the pre -strained specimen under vibration was smaller than that of fresh specimen. Also the slope of the diagram for shear modulus and confining pressure relationship of the prestrained specimen was smaller than that of fresh specimens. These results agreed well with the analytical results.
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.8, no.1, 1992³â, pp.19-28
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ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199211920444444)
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