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Çѱ¹Áö¹Ý°øÇÐȸ / v.16, no.4, 2000³â, pp.51-61
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ºí·Ï½Ä º¸°Åä ¿Ëº®ÀÇ ³»Áø¼³°è¿¡ °üÇÑ ºñ±³¿¬±¸
( Comparative Study on Seismic Design of Soil-Reinforced Segmental Retaining Walls ) |
| À¯Ãæ½Ä; Á¤È¸¿ø, ¼º±Õ°ü´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| º» ³í¹®¿¡¼´Â ºí·Ï½Ä º¸°Åä ¿Ëº®ÀÇ ³»Áø ¼³°è/ÇØ¼® °³³äÀ» °íÂûÇϰí ÇöÀç Àû¿ëµÇ°í ÀÖ´Â ´ëÇ¥ÀûÀÎ ¼³°è±âÁØÀ̶ó°í ÇÒ ¼ö ÀÖ´Â NCMA ¹× FHWA ¼³°è±âÁØÀ» ºñ±³.ºÐ¼®ÇÏ¿´´Ù. ±× °á°ú NCMA¿Í FHWA ¼³°è±âÁØÀº µ¿ÀÏÇÑ ¿ÜÀû¾ÈÁ¤¼º °ËÅä¸ðÇüÀ» Àû¿ëÇÔ¿¡µµ ºÒ±¸Çϰí ÁöÁø°è¼ö »êÁ¤ ±âÁØÀÇ Â÷ÀÌ·Î ÀÎÇØ ¿ÜÀû¾ÈÁ¤¼º °ËÅä°á°ú°¡ »óÀÌÇÏ°Ô ³ªÅ¸³ª¸ç, Àü¹ÝÀûÀ¸·Î FHWA ¼³°è±âÁØÀÌ ´Ù¼Ò º¸¼öÀûÀÎ °á°ú¸¦ ÁÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÇÑÆí, NCMA ¼³°è±âÁØ¿¡¼ äÅÃÇϰí ÀÖ´Â ³»Àû¾ÈÁ¤¼º °ËÅ乿¹ý¿¡ ÀÇÇϸé ÁöÁøÇÏÁßÀ¸·Î ÀÎÇÑ À¯¹ßÀÎÀå·ÂÀÇ Áõ°¡ Á¤µµ°¡ º®Ã¼ »ó´ÜºÎ·Î °¥¼ö·Ï ÇöÀúÈ÷ Å©°Ô ³ªÅ¸³ª¹Ç·Î »ó´ÜºÎ¿¡¼ÀÇ º¸°Àç ¼ö¸¦ Áõ°¡½ÃÄѾßÇÒ »Ó¸¸ ¾Æ´Ï¶ó ÃæºÐÇÑ ÀιßÀúÇ×·Â È®º¸¸¦ À§ÇØ Á¤Âø±æÀ̸¦ Áõ°¡½ÃÄÑ¾ß Çϳª FHWA ¼³°è±âÁØÀº ÇϴܺΠº¸°Àç¿¡ µ¿ÀûÇÏÁßÀ» ÀçºÐ¹èÇÏ´Â ¸ðÇüÀ» äÅÃÇϰí ÀÖÀ¸¹Ç·Î NCMA ¼³°è±âÁذú´Â »ó¹ÝµÈ °á°ú¸¦ µµÃâÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. º» ¿¬±¸ÀÇ °á°ú´Â È¿À²ÀûÀÎ ¼³°è±âÁØÀÇ °³¹ßÀ» À§ÇØ º¸´Ù Á¾ÇÕÀûÀ̰í ü°èÀûÀÎ ¿¬±¸ÀÇ Çʿ伺À» Á¦½ÃÇϰí ÀÖ´Ù. |
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| This paper reviews fundamentals of a pseudo-static seismic design/analysis method for soil-reinforced segmental retaining walls. A comparative study on NCMA and FHWA seismic design guidelines, which are one of the most well known design guidelines for mechanically stabilized earth walls, was also performed. The results demonstrate that there exist significant discrepancies in the results of external stability analysis despite the same calculation model used in the two guidelines, due primarily to different seismic coefficient selection criteria. It is also demonstrated that the internal stability calculation model for NCMA guideline tends to yield larger seismic reinforcement force in the shallower reinforcement layers, resulting in an increased number of reinforcement layers at the top of reinforced wall and increased reinforcement lengths to ensure adequate anchorage capacity. The internal stability calculation model adopted by FHWA guideline, however, leads to redistribution of dynamic force to the lower reinforcement layers and thus results n an opposite trend of NCMA guideline. Findings from this study clearly demonstrate a need for more in-depth studies to develop a generally acceptable design/analysis method. |
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| Ű¿öµå |
| Soil-reinforced segmental retaining wall;Earthquakes;Geosynthetics;Pseudo-static analysis;Seismic loading;Dynamic earth pressure; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.16, no.4, 2000³â, pp.51-61
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920441324)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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