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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.6, 2003³â, pp.363-369
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1-g Áøµ¿´ë½ÃÇèÀ» ÀÌ¿ëÇÑ Áøµ¿ÇÏÁßÀ» ¹Þ´Â Æ÷ÈµÈ ¸ð·¡Áö¹ÝÀÇ Åõ¼ö°è¼ö º¯È ÃßÁ¤
( Estimation of the Permeability Variation in Saturated Sand Deposits Subjected to Shaking Load Using 1-g Stinking Table Test ) |
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| ¾×»óÈÈÄ °úÀ×°£±Ø¼ö¾Ð ¼Ò»ê¾ç»óÀ» ÆÄ¾ÇÇÏ°í ¾×»óȸ¦ °Þ´Â Áö¹ÝÀÇ Ä§ÇÏ·®À» ¿¹ÃøÇϴµ¥ ÇÊ¿äÇÑ Áøµ¿ÇÏÁßÀÌ ÀÛ¿ëÇÏ´Â µ¿¾ÈÀÇ Æ÷ÈµÈ ¸ð·¡Áö¹ÝÀÇ Åõ¼ö°è¼ö º¯È¸¦ ÃßÁ¤Çϱâ À§ÇÏ¿©, ¾×»óÈ °¡´É¼ºÀÌ Å« 5Á¾·ùÀÇ ¸ð·¡¿¡ ´ëÇØ 1-g Áøµ¿´ë½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ½ÃÇè°úÁ¤Áß¿¡ ±íÀ̺° °úÀ×°£±Ø¼ö¾Ð°ú ÁöÇ¥¸é ħÇÏ·®À» °èÃøÇÏ¿´´Ù. ¾×»óÈÈÄ °èÃøµÈ °úÀ×°£±Ø¼ö¾Ð ¼Ò»ê°î¼±À» ħ°ÀÌ·ÐÀ¸·Î ¼±Çü¸ð»çÇÏ¿´°í ¼±Çü¸ð»çµÈ ¼Ò»ê°î¼±ÀÇ ±â¿ï±â¸¦ ºÐ¼®ÇÔÀ¸·Î½á ¼Ò»ê¼Óµµ¿Í ÀÔµµÆ¯¼ºÄ¡¿ÍÀÇ »ó°ü°ü°è¸¦ ¾ò¾ú´Ù. ÀÌ·¯ÇÑ »ó°ü°ü°è¿Í °èÃøµÈ ħÇÏ·®À» ħ°À̷п¡¼ Á¦¾ÈÇÑ ¼Ò»ê¼Óµµ½Ä¿¡ ´ëÀÔÇÏ¿© ¼Ò»ê°úÁ¤Áß Åõ¼ö°è¼ö¸¦ ¿ª»êÇÏ¿´°í »êÁ¤µÈ ¼Ò»ê°úÁ¤Áß Åõ¼ö°è¼ö¸¦ ÀÌ¿ëÇÏ¿© Áøµ¿ÇÏÁßÀÌ ÀÛ¿ëÇÏ´Â µ¿¾ÈÀÇ Åõ¼ö°è¼ö º¯È¸¦ ÃßÁ¤ÇÏ¿´´Ù. ¾×»óÈÈÄ °úÀ×°£±Ø¼ö¾ÐÀÇ ¼Ò»ê¼Óµµ´Â À¯È¿ÀÔ°æÀ» ±Õµî°è¼ö·Î ³ª´« °ª¿¡ ¼±ÇüÀû »ó°ü°ü°è¸¦ °®´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ÀÌ·¯ÇÑ »ó°ü°ü°è¸¦ ÀÌ¿ëÇÏ¿© ±¸ÇÑ ¼Ò»ê°úÁ¤°ú ¾×»óȵ¿¾ÈÀÇ Åõ¼ö°è¼ö´Â ¿øÁö¹ÝÀÇ ÃʱâÅõ¼ö°è¼ö¿¡ ºñÇØ °¢°¢ 1.1¡2.8¹è, 1.4¡5¹è Áõ°¡ÇÏ¿´´Ù ±×¸®°í ÀÌ·¯ÇÑ Áõ°¡ Á¤µµ´Â ½ÃÇè¸ð·¡ÀÇ À¯È¿ÀÔ°æÀÌ Å¬¼ö·Ï ±Õµî°è¼ö°¡ ÀÛÀ»¼ö·Ï ´õ Ä¿ÁüÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| The purpose of this study is to understand the dissipation pattern of excess pore pressure after liquefaction and to estimate the variation in permeability during shaking load, which should be known for settlement predictions of the ground undergoing liquefaction. In this study, 1-g shaking table tests were carried out for 5 different kinds of sands, all of which had high liquefaction potentials. During the tests excess pore pressure at various depths, and surface settlements were measured. The measured dissipation curve of the excess pore pressure after liquefaction was linearly simulated using the solidification theory, and from the analysis of the slopes of linearly simulated curves, the correlation between dissipation velocity and the gradation characteristics was obtained. By substituting this correlation and the measured settlement to the dissipation velocity equation recommended in solidification theory, the permeability during dissipation was calculated, which was used for estimating the permeability variation during shaking load. The dissipation velocity of excess pore pressure after liquefaction had a linear correlation with the effective grain size divided by the coefficient of uniformity. The permeability during dissipation and liquefaction increased by 1.1¡2.8 times and 1.4¡5 times compared to the initial permeability of the original ground, respectively. And the amount of increase became greater as the effective grain size of the test sand increased and the coefficient of uniformity decreased. |
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| Ű¿öµå |
| Dissipation pattern;Excess pore pressure;Liquefaction;Permeability;Shaking table test; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.6, 2003³â, pp.363-369
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922148136)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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