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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.1, 2005³â, pp.59-67
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( Centrifuge Model Test on the Bearing Capacity and Failure Mechanism of Composit Ground Improved with Slag Compaction Piles ) |
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| º» ³í¹®Àº ¸ð·¡´ÙÁü¸»¶ÒÀÇ ´ëüÀç·Î Á¦°½½·¡±×¸¦ ´ÙÁü¸»¶ÒÀ¸·Î »ç¿ëÇÏ¿© ±×¿¡ µû¸¥ Áö¹Ý°øÇÐÀû °Åµ¿À» Á¶»çÇϱâ À§ÇÏ¿© ¿ø½É¸ðÇü ½ÇÇèÀ» ¼öÇàÇÑ ½ÇÇèÀû ¼öÄ¡Àû ¿¬±¸ °á°úÀÌ´Ù. Á¦°½½·¡±×ÀÇ »ó´ë¹Ðµµ¸¦ º¯È½ÃŲ ¿ø½É¸ðÇü½ÇÇèÀ» ¼öÇàÇÏ¿© ±×ÀÇ ÁöÁö·Â º¯È, ¸»¶Ò°ú Á¡ÅäÁö¹Ý »çÀÌÀÇ ÀÀ·ÂºÐ´ãºñ, ħÇÏÆ¯¼º, ÆÄ±«¸ÞÄ«´ÏÁò¿¡ ´ëÇÏ¿© Á¶»çÇÏ¿´´Ù. ¿ø½É¸ðÇü½ÇÇè°á°ú, ½½·¡±×´ÙÁü¸»¶ÒÀÇ »ó´ë¹Ðµµ°¡ Áõ°¡ÇÒ¼ö·Ï ÁöÁö·ÂÀÌ Áõ°¡ÇÔÀ» È®ÀÎÇÏ¿´À¸¸ç µ¿ÀÏÁ¶°ÇÀÇ ¸ð·¡´ÙÁü¸»¶Ò º¸´Ù ¾à $30%$ Á¤µµ Ç׺¹ÇÏÁß°µµ°¡ Å©°Ô ³ªÅ¸³ª ¸ð·¡ ´ëü Àç·á·Î¼ È¿°ú°¡ ÀÖÀ» °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ, ½½·¡±×´ÙÁü¸»¶ÒÀÇ »ó´ë¹Ðµµ°¡ Áõ°¡ÇÒ¼ö·Ï ÀÀ·ÂºÐ´ãºñ´Â Áõ°¡ÇÏ¿´À¸¸ç ÀçÇϽÃÇèÈÄ È°µ¿¼± °üÂû°á°ú ¸»¶Ò»óºÎ·Î ºÎÅÍ $2D{sim}2.5D$ ±íÀÌ¿¡¼ ¸»¶ÒÀÇ ¸í·áÇÑ Àü´Ü¸éÀÌ ¹ß»ýÇÏ¿´´Ù. ÇÑÆí, ¼öÁ¤ Cam-clay ¸ðµ¨À» »ç¿ëÇÑ »ó¿ëÇÁ·Î±×·¥ CRISPÀ» ÀÌ¿ëÇÏ¿© ¿ø½É¸ðÇü½ÇÇè°á°ú¸¦ ¸ð»çÇÏ¿´´Ù. ÇÏÁß-ħÇÏ °î¼±°ú ÀÀ·ÂºÐ´ãºñÀÇ Æ¯¼º¿¡ ´ëÇÑ ÇØ¼®°á°ú´Â ½ÇÇè°á°ú¿Í ºñ±³Àû ±ÙÁ¢ÇÏ¿´´Ù. |
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| This paper presents experimental and numerical research results of centrifuge model tests performed to investigate the geotechnical engineering behavior of slag compaction pile as a substitute of sand compaction pile. For centrifuge model tests, bearing capacity of composit soil improved with slag compaction piles, stress concentrations in-between pile and soft clay, settlement characteristics, and failure modes were investigated with slags differing in their relative density. A slag was found to be a good substitute for a sand since the slag compaction pile model showed a greater yield stress intensity up to $30%$ than the sand compaction pile model under the identical testing conditions. Stress concentration ratio tended to increase with the relative density of slag pile and the clear shear lines in the piles were observed at the depth of $2D{sim}2.5D$ (D=dia. of model pile) from the top of the piles after loading tests. Numerical analysis with a software of CRISP, implemented with the modified Cam-clay model, was carried out to simulate the results of centrifuge model test. Test results about characteristics of load-settlement curves and stress concentration ratio are in relatively good agreements with numerical estimations. |
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| Ű¿öµå |
| Area replacement ratio;Centrifuge model test;Slag compaction pile;Stress concentration ratio; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.1, 2005³â, pp.59-67
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200531935916587)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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