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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.5, 2007³â, pp.153-162
À¯ÇÑ¿ä¼ÒÇØ¼®¿¡ ÀÇÇÑ ¿¬¾àÁö¹Ý »ó º¸°­Åä ¿Ëº®¿¡ ´ëÇÑ ÀûÁ¤ ġȯ±íÀÌ °ËÅä
( Investigation of Proper Replacement Depth for the Reinforced Earth Wall on a Soft Ground by Finite Element Analysis )
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ġȯ°ø¹ýÀ» Àû¿ëÇÏ¿© ¿¬¾àÁö¹Ý »ó¿¡ ½Ã°øµÇ´Â º¸°­Åä ¿Ëº®¿¡ ´ëÇØ ¿¬¾àÁö¹ÝÀÇ µÎ²² ¹× °­¼º, ġȯ±íÀÌ¿Í ¿Ëº®³ôÀÌÀÇ º¯È­¿¡ µû¸¥ ¿Ëº®ÀÇ °Åµ¿À» ¿¬¾àÁö¹Ý ¾Ð¹ÐÇö»ó°ú ½Ã°ø´Ü°è¸¦ ÇÔ²² °í·ÁÇÏ´Â À¯ÇÑ¿ä¼ÒÇØ¼®À¸·Î °ËÅäÇÏ¿´´Ù. ¿Ëº®ÀÇ °Åµ¿Àº º®Ã¼¿¡ ¹ß»ýÇÏ´Â º¯À§¿Í ħÇÏ·®, ¿Ëº® ±âÃÊÁö¹Ý¿¡ ¹ß»ýÇÏ´Â Àü´Üº¯ÇüÀ²·Î Ç¥ÇöÇÏ¿´´Ù. °Åµ¿¿¡ µû¸¥ ¿Ëº®ÀÇ ¾ÈÁ¤¼ºÀº º¯À§¿Í Àü´Üº¯ÇüÀ²ÀÇ ÇѰ谪À» ¹®Ç忬±¸·ÎºÎÅÍ Á¤Çϰí À̸¦ ±âÁØÀ¸·Î Æò°¡ÇÏ¿´´Ù. ÇØ¼®°á°ú·ÎºÎÅÍ, ¿Ëº®ÀÇ °Åµ¿Àº ¿¬¾àÁö¹Ý µÎ²²(t)¿Í °­¼º, ġȯ±íÀÌ(d), ¿Ëº®³ôÀÌ(h)ÀÇ º¯È­¿¡ µû¶ó ¸ðµÎ ¿µÇâÀ» ¹ÞÁö¸¸, ƯÈ÷ d¿Í hÀÇ º¯È­¿¡ ¹Î°¨ÇÑ °ÍÀ» ±Ô¸íÇÏ¿´´Ù. ¶ÇÇÑ, ¿Ëº®ÀÇ ¾ÈÁ¤¼º À¯Áö¸¦ À§ÇØ ¿ä±¸µÇ´Â d/h °ªÀº t¿Í hÀÇ º¯È­¿¡ ´ëÇÏ¿© Å©°Ô ¿µÇâÀ» ¹ÞÁö ¾ÊÀ½À» º¸¿´´Ù. ÀÌ·¯ÇÑ °á°ú·ÎºÎÅÍ ¿¬¾àÁö¹Ý »ó º¸°­Åä ½Ã°ø ±¸°£ ³»¿¡¼­ ¿Ëº® ³ôÀ̰¡ º¯È­ÇÏÁö¸¸ ±× º¯È­Á¤µµ°¡ ±Ø½ÉÇÏÁö ¾ÊÀº °æ¿ì¿¡, ÀûÁ¤ ġȯ±íÀ̸¦ d/h·Î ³ªÅ¸³½ ÀÏ·üÀûÀÎ °ªÀ¸·Î Á¦¾ÈÇÒ ¼ö ÀÖ´Ù´Â °á·ÐÀ» ¾ò¾ú´Ù.
For the reinforced earth wall constructed on a soft ground in parallel with replacing soft soils, the behavior of the wall according to variations of thickness and stiffness of soft layer, replacement depth, and wall height is investigated using a finite element method, in which incremental construction steps including consolidation of soft soil layer are considered. The behavior of wall is characterized by investigating displacements and settlements developing at the wall, and shear strains developing in a soil deposit. The stability of wall is, then, evaluated by comparing these values with the safety criteria determined on the basis of the literature. Based on the investigation, it is shown that the behavior of wall is influenced naturally from soft soil thickness(t), replacement depth(d) and wall height(h), but more significantly from d and h. In addition, it is also shown that the normalized replacement depth, d/h, required for the safety of wall is not influenced significantly by the variations of t and h. Consequently, it can be concluded that the proper replacement depth can be suggested in an equivalent value in terms of d/h, even for the cases where the wall height is varying with stations, but the variation is not significant.
 
Ű¿öµå
Finite element analysis;Reinforced earth wall;Replacement depth;Replacement of soft ground;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.5, 2007³â, pp.153-162
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200724737435082)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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