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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.8, 2004³â, pp.135-145
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°úÀçÇÏÁßÀÌ ÀÖ´Â Unpropped Diaphragm WallÀÇ º¯À§¾ç»ó¿¡ °üÇÑ ¿ø½É¸ðµ¨¸µ
( Centrifugal Modelling on the Displacement Mode of Unpropped Diaphragm Wall with Surcharge ) |
| Çã¿;ÀÌó±Ù;¾È±¤±¹; ÃæºÏ´ëÇб³ Åä¸ñ°øÇаú;Ãæ³²µµ¸³ û¾ç´ëÇÐ Åä¸ñ°ú;(ÁÖ)¾ÆÀÌÄÜÅØ ±â¼ú¿¬±¸¼Ò;
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| º» ¿¬±¸¿¡¼´Â ȰdzÈÅä Áö¹Ý»ó unpropped diaphragm wallÀÇ °Åµ¿À» ¿¬±¸Çϱâ À§ÇÏ¿© °úÀçÇÏÁßÀÇ À̰ݰŸ®¸¦ º¯È½ÃŰ¸é¼ ¿ø½É¸ðÇü½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ¿ø½É¸ðÇü½ÇÇè½Ã Áö¹Ý±¼ÂøÀº Èë°ú µ¿ÀÏÇÑ ¹Ðµµ·Î È¥ÇÕµÈ zinc chloride ¿ë¾×ÀÌ ¹è¼öµÇµµ·Ï ¹ëºê¸¦ Á¶ÀÛÇÏ¿© ½Ç½ÃÇÏ¿´À¸¸ç, ±¼Âø¿¡ µû¶ó ¹ß»ýÇÏ´Â Áö¹ÝÀÇ º¯Çü°ú º®Ã¼ÀÇ º¯À§ ¹× ÈÚ¸ð¸àÆ®¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¼öÄ¡ÇØ¼®Àº ´ëºÎºÐÀÇ Áö¹Ý°øÇÐ ¹®Á¦¿¡ Àû¿ëÇÒ ¼ö ÀÖ´Â FLAC ÇÁ·Î±×·¥À» ÀÌ¿ëÇÏ¿´´Ù. ¼öÄ¡ÇØ¼®¿¡¼ ¸ðÇüÁö¹ÝÀº Mohr-Coulomb ¸ðµ¨, diaphragm wallÀº ź¼º¸ðµ¨À» »ç¿ëÇÏ¿© 2Â÷¿ø Æò¸éº¯Çü·ü Á¶°ÇÀ¸·Î ÇØ¼®À» ¼öÇàÇÏ¿´´Ù. ¸ðÇü½ÇÇè °á°ú ÆÄ±«¸éÀÇ Á÷¼±ÀûÀÎ ÇüÅ·ΠÆÄ±«¸é³»ÀÇ ¹è¸éÃø Áö¹ÝÀº º®Ã¼¸¦ ÇâÇÏ¿© ÇÏÇâÀÇ º¯À§¸¦ ÀÏÀ¸Å°¸é¼ º®Ã¼ÀÇ È¸Àü¿¡ ÀÇÇØ ÆÄ±«µÇ¾úÀ¸¸ç, ÆÄ±«¸éÀÇ °¢µµ´Â 67¡74$^{circ}$Á¤µµ·Î ÀÌ·ÐÀûÀÎ ÆÄ±«¸éÀÇ °¢µµº¸´Ù Å©°Ô Æò°¡µÇ¾ú´Ù. ½ÇÇè ¹× ÇØ¼® °á°ú Áö¹ÝÀÇ ÃÖ´ëħÇÏ·®ÀÌ ¹ß»ýÇÏ´Â À§Ä¡´Â Àß ÀÏÄ¡ÇÏ¿´À¸¸ç, ±íÀÌ¿¡ µû¸¥ º®Ã¼º¯À§´Â ¼±ÇüÀûÀÎ °ü°è¸¦ ³ªÅ¸³»¾ú´Ù. |
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| In this study, the behavior of unpropped diaphragm walls on decomposed granite soil was investigated through centrifugal and numerical modelling. Centrifuge model tests were performed by changing the interval distance of surcharge. Excavation was simulated during the centrifuge tests by operating a solenoid valve that allowed the zinc chloride solution to drain from the excavation. In these tests, ground deformation, wall displacement and bending moment induced by excavation were measured. FLAC program which can be able to apply far most geotechnical problems was used in the numerical analysis. In numerical simulation, Mohr-Coulomb model fur the ground model, an elastic model for diaphragm wall were used for two dimensional plane strain condition. From the results of model tests, failure surface was straight line type, the ground of retained side inside failure line had downward displacement to the direction of the wall, and finally the failure was made by the rotation of the wall. The angle of failure line was about 67 ¡ 74$^{circ}$, greater than calculated value. The locations of the maximum ground settlement obtained from model tests and analysis results are in good agreements. The displacement of wall and the change of the embedment depth is likely to have linear relationship. |
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| Ű¿öµå |
| Centrifugal modelling;Decomposed granite soil;Excavation Surcharge;Unpropped diaphragm wall; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.8, 2004³â, pp.135-145
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411923039706)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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