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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.127-135
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±º»êÁ¡ÅäÀÇ 2Â÷¾Ð¹Ð °¨¼Ò¸¦ À§ÇÑ Surcharging Æò°¡
( Evaluation of Surcharging to Reduce Secondary Consolidation for Kunsan Clay ) |
| ÁÖÁ¾Áø;ÀÓÇü´ö;ÀÌ¿ìÁø;±è´ë±Ô;±è³«°æ;±èÇüÁÖ; (ÁÖ)¸¸¿µ¿£Áö´Ï¾î¸µ;°í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;°í·Á´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;»ó¸í´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;¼º±Õ°ü´ëÇб³ °ÇÃà Á¶°æ ¹× Åä¸ñ°øÇкÎ;±º»ê´ëÇб³ Åä¸ñ°øÇкÎ;
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| ¿¬¾àÁö¹Ý¿¡¼ÀÇ °Ç¼³Àº °¢ ´Ü°èº° Á¤È®ÇÑ Ä§ÇÏ·® ¿¹ÃøÀÌ Áß¿äÇÏ´Ù. ƯÈ÷, ÃÖ±Ù 2Â÷ħÇÏÀÇ Á߿伺ÀÌ °Á¶µÇ°í ÀÖ´Ù. 2Â÷ħÇϸ¦ ¿¹ÃøÇϰí Á¶ÀýÇÏ´Â ÇϳªÀÇ ÇÕ¸®ÀûÀÎ Á¢±Ù¹æ¹ýÀ¸·Î¼ 2Â÷ħÇÏ °¨¼Ò¸¦ À§ÇÑ surcharging ½ÃÇè°ú °æÇèÀûÀÎ $C_a$(2Â÷¾ÐÃàÁö¼ö)/ $C_c$(lÂ÷¾ÐÃàÁö¼ö)ºñ¸¦ Ȱ¿ëÇÒ ¼ö ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â ±º»êÁö¿ªÀÇ ¿¬¾àÁö¹Ý¿¡¼ äÃëµÈ ºÒ±³¶õ ½Ã·á¸¦ ÀÌ¿ëÇÏ¿© ´Ü°è¾Ð¹Ð½ÃÇè°ú surcharging ½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ½ÃÇè °á°ú ±º»êÁ¡ÅäÀÇ $C_a/C_c$ °ªÀº 0.0329À̸ç, °£±Øºñ $-t/t_p$ °ü°è°¡ ¼±Çü°ü°è¸¦ ±¸ÇØÁö¹Ç·Î Àå±â°£ ÇÏÁß Á¶°Ç¿¡¼ 2Â÷¾ÐÃàÁö¼ö´Â ½Ã°£¿¡ °ü°è¾øÀÌ ÀÏÁ¤ÇÑ °ÍÀ¸·Î º¼ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ±º»êÁ¡Åä¿¡ ´ëÇØ¼´Â Àüü surcharge ºñ°¡ 0.4ÀÌ°í °úÀ×°£±Ø¼ö¾Ð ¼Ò»êºñ°¡ 80~100%ÀÏ ¶§, 2Â÷ħÇÏ·®À» È¿°úÀûÀ¸·Î °¨¼Ò½Ãų¼ö Àִ°ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| The accurate evaluation of settlement is important to every steps in the constructions involving soft soils. Relating with those constructions, especially, it has been emphasized recently that the influnce of secondary settlement is important. The ratio of $C_a/C_c$ and the surcharging tests can be applied collaboratively to predicting and reducing secondary consolidation. A series of incremental loading consolidation test and surcharging tests for undisturbed samples of Kunsan clay were performed in this study. As a result of the tests, the ratio of $C_a/C_c$ for the clay was found to be 0.0329. Also, the relationship between void ratio and $t/t_p$ was shown to be linear. Accordingly, the secondary compression index, $C_a for a long term loading had a constant value regardless of time. When the total surcharge ratio was 0.4 and the dissipation ratio of excessive porewater pressure was in the range from 80% to 100%, secondary settlement was effectively reduced for Kunsan clay. |
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| Ű¿öµå |
| Consolidation;Kunsan clay;Secondary compression;Surcharging; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.127-135
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921342005)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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