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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.8, 2005³â, pp.55-61
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¿Ëº®ÀÇ È°µ¿¿¡ µû¸¥ ¹è¸é µ¿ÀûÅä¾ÐÀÇ º¯È
( Variation of Dynamic Earth Pressure Due to Sliding of Retaining Walls ) |
| À±¼®Àç;±è¼º·Ä;ȲÀçÀÍ;±è¸í¸ð; »ï¾È ¿£Áö´Ï¾î¸µ;µ¿¾Æ´ëÇб³ Åä¸ñÇØ¾ç°øÇкÎ;¼¿ï´ëÇб³ BK 21;¼¿ï´ëÇб³ °ø°ú´ëÇÐ Áö±¸È¯°æ½Ã½ºÅÛ °øÇкÎ;
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| ÇöÀç ¿Ëº®ÀÇ ¹è¸é µ¿ÀûÅä¾ÐÀ» »êÁ¤ÇÒ ¶§ ÁÖ·Î µî°¡Á¤ÀûÇØ¼®¹ýÀÎ Mononobe-Okabe ½ÄÀÌ ÀÌ¿ëµÇ°í ÀÖ´Ù. ÇÏÁö¸¸ À̽ÄÀº º®Ã¼¿Í µÚä¿ò Áö¹Ý°£ÀÇ µ¿Àû»óÈ£ÀÛ¿ëÀ» °í·ÁÇÏÁö ¸øÇÑ´Ù´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â º®Ã¼¿Í µÚä¿ò Áö¹Ý°£ÀÇ µ¿Àû»óÈ£ÀÛ¿ëÀ» ºÐ¼®Çϱâ À§ÇÏ¿© °ÇÁ¶ »çÁúÅä·Î µÚä¿òÇÑ ¿Ëº®¿¡ ´ëÇÏ¿© Áøµ¿´ë ½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. º®Ã¼ ´ÜÀ§Áß·®, ÀԷ°¡¼ÓµµÀÇ ÁøÆø ±×¸®°í º®Ã¼ ¹Ù´Ú¸é °ÅÄ¥±â¸¦ º¯È½ÃŰ¸é¼ ÀÌµé °¢ ÀÎÀÚ°¡ µ¿ÀûÅä¾Ð¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù. ±× °á°ú º®Ã¼ÀÇ È°µ¿¼Óµµ°¡ ÀÛÀº °æ¿ì¿¡´Â µ¿ÀûÅä¾Ð°ú °ü¼º·Â°£Àº 180µµ À§»óÂ÷¸¦ °¡Á³Áö¸¸ Ȱµ¿¼Óµµ°¡ Å« °æ¿ì¿¡´Â µ¿ÀûÅä¾Ð¿¡ °ü¼º·Â°ú µ¿ÀÏÇÑ À§»óÀ» °¡Áö´Â ÀÛÀº Á¤Á¡ÀÌ ¹ß»ýÇÏ¿´´Ù. µ¿ÀûÅä¾ÐÀÇ Å©±â´Â º®Ã¼°¡¼Óµµ¿Í º®Ã¼´ÜÀ§Áß·®ÀÇ Å©±â¿¡ ºñ·ÊÇÏ¿´´Ù. ¶ÇÇÑ Mononobe-Okabe ¹æ¹ýÀ¸·Î °è»êµÈ µ¿ÀûÅä¾ÐÀº ÃøÁ¤µÈ µ¿ÀûÅä¾ÐÀÇ »óÇѰªÀ¸·Î ³ªÅ¸³µ´Ù. |
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| Mononobe-Okabe method is generally used to evaluate dynamic earth pressure for the seismic design of retaining walls. However, Mononobe-Okabe method does not consider the effects of dynamic interactions between backfill soil and walls. In this research, shaking table tests on retaining walls were performed to analyze the phase and magnitude of dynamic earth pressure. The unit weight of walls, the amplitude of input acceleration and the base friction coefficient of walls were varied to analyze the influence of these factors on the dynamic earth pressure. Test results showed that the dynamic earth pressure was 180 degrees out of phase with the wall inertia force for the low sliding velocity of the wall, whereas small peaks of the dynamic earth pressure, which are in phase with the wall inertia force, were developed for the high sliding velocity of the wall. The amplitude of dynamic earth pressure was proportional to that of wall acceleration and the unit weight of the wall. In addition, the dynamic earth forces calculated by the Mononobe-Okabe method were the upper limit of the dynamic earth pressures. |
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| Ű¿öµå |
| Dynamic earth pressure;Earthquake;Inertia force;Phase relation;Retaining wall;Shaking table test; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.8, 2005³â, pp.55-61
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200507523322430)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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