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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.8, 2008³â, pp.99-109
¼Ò¼ºÁö¼ö¿¡ µû¸¥ Á¡¼ºÅäÀÇ ¾Ð¹ÐƯ¼º¿¡ °üÇÑ ¿¬±¸
( A study on the Consolidation Characteristic of Cohesive Soil by Plastic Index )
±èÂù±â;Á¶¿ø¹ü;À̽·Ã;ÃÖ¿ìÁ¤; ´ëÁø´ëÇб³ °Ç¼³½Ã½ºÅÛ°øÇаú;´ëÁø´ëÇб³ ´ëÇпø;¼­Á¤¿£Áö´Ï¾î¸µ(ÁÖ);¿ø±¤´ëÇб³ ´ëÇпø;
 
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º» ¿¬±¸´Â ±º»ê »õ¸¸±ÝÁö¿ªÀÇ Á¡¼ºÅ並 ¼Ò¼ºÁö¼ö 15%, 30%, 45%, 60%°¡ µÇµµ·Ï º¥ÃʳªÀÌÆ®¸¦ ÷°¡ÇÑ ÀΰøÀÇ ½Ã·á¸¦ ÀÌ¿ëÇÏ¿© ÇÏÁßÀçÇϱⰣÀ» 1ÀÏ, 2ÀÏ, 4ÀÏ, 8ÀÏ µîÀ¸·Î ´Þ¸®ÇÑ Ç¥ÁؾйнÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ±×¸®°í ÀÎõ, ±¤¾ç, ¿ï»êÁö¿ªÀÇ ºÒ±³¶õ ½Ã·á¿¡ ´ëÇÑ ¾Ð¹Ð½ÃÇèµµ °°ÀÌ ¼öÇàÇÏ¿© ¼Ò¼ºÁö¼ö¿Í ¾Ð¹ÐÇÏÁßÀçÇϱⰣÀÌ 2Â÷ ¾Ð¹Ð¿¡ ¾î¶² ¿µÇâÀÌ ÀÖ´ÂÁö¸¦ ¹àÇû´Ù. ±×¸®°í °¢ ¼Ò¼ºÁö¼ö¿¡ µû¸¥ ÇÏÁß°ú ħÇÏÆ¯¼º, ¾Ð¹Ð°è¼öƯ¼º, ¾ÐÃàÁö¼ö ¹× 2Â÷ ¾ÐÃàÁö¼öƯ¼º, °£±Ø¼ö¾ÐƯ¼ºÀ» ¹àÈ÷°í ¾ÐÃàÁö¼ö, ¾Ð¹Ð°è¼ö, 2Â÷ ¾ÐÃàÁö¼ö µîÀ» ¼Ò¼ºÁö¼ö, ÇÏÁß¿¡ °üÇÏ¿© Á¤½ÄÈ­ÇÏ¿´´Ù. ¶ÇÇÑ Á¤½ÄÈ­ÇÑ ½ÄÀ» ÀÌ¿ëÇÑ 1Â÷ ¹× 2Â÷ ¾Ð¹ÐħÇÏ·® ¿¹Ãø°á°ú¿Í ź¼Ò¼º ±¸¼º¸ðµ¨ÀÎ ¼öÁ¤ Cam-Clay¸ðµ¨°ú ź Á¡¼Ò¼º ¸ðµ¨ÀÎ Sekiguchi¸ðµ¨À» ÀÌ¿ëÇÑ ¿¹Ãø°á°ú¸¦ ¸ðÇü½ÃÇè °á°ú¿Í °°ÀÌ ºñ±³ÇÏ¿´´Ù. ±× °á°ú, 2Â÷ ¾Ð¹ÐƯ¼ºÀ» °í·ÁÇÑ Sekiguchi¸ðµ¨ÀÌ ¸Å¿ì Á¤µµ ³ô°Ô °á°ú¸¦ ¿¹ÃøÇÒ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù.
The standard consolidation tests using the incremental loading technique test (IL) were performed on remolded normal consolidation and undisturbed clay samples to find out the effects of plastic index and loading period on consolidation in this study. The remolded samples used were prepared by mixing Gunsan-Samangum clay with bentonite so that they may have plasticity indexes of 15, 30, 45, and 60%, respectively. The undisturbed clay samples were collected from Inchon, Kwangyang, and Uoolsan. The samples were tested at the condition of 4 different loading periods (1, 2, 4, and 8 days). Settlement, coefficient of consolidation, compression index, secondary compression index, and pore water pressure characteristics were investigated from the plastic index and loading period aspects, and the compression index, coefficient of consolidation, and secondary compression index were formulated in terms of the plastic index and loading. To verify the applicability of proposed equations, the settlements obtained from Terzaghi's theory, modified Cam-Clay model (elasto-plastic model), and the Sekiguchi model (elasto-viscoplastic mode) were compared with the test results. The comparison indicates that the Sekiguchi model incorporating the secondary consolidation characteristic well predicts the results.
 
Ű¿öµå
Consolidation characteristic;Incremental loading;Plastic index;Secondary compression index;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.8, 2008³â, pp.99-109
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200800557078757)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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