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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.1, 2002³â, pp.71-78
´ÙÃþÁö¹Ý¿¡ ±ÙÀÔµÈ È븷ÀÌ º®ÀÇ ¿ªÇؼ®¿¡ °üÇÑ ¿¬±¸
( Back Analysis of the Earth Wall in Multi-layered Subgrade )
À̽ÂÈÆ;±èÁ¾¹Î;±è¼öÀÏ;Àå¹ü¼ö; ¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú*;¼¼Á¾´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;½Ã¼³¾ÈÀü±â¼ú°ø´Ü ±â¼ú°³¹ßÁö¿ø½Ç;
 
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º» ¿¬±¸¿¡¼­´Â ´ÙÃþÁö¹Ý¿¡ ±ÙÀÔµÈ È븷ÀÌ º®ÀÇ ´Ü°èº° °èÃøº¯À§·ÎºÎÅÍ °¢ ÃþÀÇ Áö¹Ý¹°¼ºÀ» ÃßÁ¤Çϰí À̷κÎÅÍ Â÷±â´Ü°èÀÇ °Åµ¿À» ¿¹ÃøÇϱâ À§ÇÑ ¿ªÇؼ® ±â¹ýÀ» Á¦¾ÈÇÏ¿´´Ù. Áö¹ÝÀÌ ´Ù¼öÀÇ ÃþÀ¸·Î ±¸¼ºµÇ¾î ÀÖÀ» °æ¿ì ã¾Æ¾ß ÇÒ ´ë»óº¯¼ö°¡ ¸¹¾ÆÁö°Ô µÇ¸ç, ´ë»óº¯¼ö°¡ ¸¹¾ÆÁú¼ö·Ï ¿ªÇؼ®¿¡ »ó´çÇÑ ¹«¸®°¡ µû¸£°Ô µÈ´Ù. ÀÌ·¯ÇÑ Ãþº° Áö¹Ý¹°¼ºÀ» È¿À²ÀûÀ¸·Î ÃßÁ¤Çϱâ À§ÇÏ¿© ÃÖÇÏ´ÜÃþºÎÅÍ ¼øÂ÷ÀûÀ¸·Î ´ë»óº¯¼öµéÀ» ã¾Æ°¡´Â ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿´´Ù. ¿ªÇؼ®Àº »ó´ç·®ÀÇ ¹Ýº¹°è»êÀÌ ÇÊ¿äÇϱ⠶§¹®¿¡ Á¤Çؼ® ¹æ¹ýÀ¸·Î´Â ÇØ¼®½Ã°£ÀÌ Âª°í ½Ã°ø´Ü°è º° ÇØ¼®ÀÌ °¡´ÉÇÑ Åº¼Ò¼ºº¸¹ýÀ» »ç¿ëÇÏ¿´´Ù. ¿ªÇؼ® ´ë»óº¯¼ö´Â ź¼Ò¼º ÇÏÁß-º¯À§ °î¼±ÀÇ ±¸¼º¿ä¼ÒÀÎ Áö¹Ý¹Ý·Â°è¼ö¿Í ¼öÆòÅä¾Ð°è¼öµéÀ» ÃëÇÏ¿´À¸¸ç, ¸ñÀûÇÔ¼ö´Â ÀÌ»óº¯À§¿¡ ÀÇÇÑ ¿ÀÂ÷¸¦ ÃÖ¼ÒÈ­½Ã۱â À§ÇÏ¿© ´Ü°èº° °èÃøº¯À§ ÁõºÐ°ú ÇØ¼®º¯À§ ÁõºÐÀÇ Â÷ÀÌ·Î ±¸¼ºÇÏ¿´´Ù. ¸ñÀûÇÔ¼ö¸¦ ÃÖ¼ÒÈ­ ½ÃŰ´Â ´ë»óº¯¼öµéÀ» ã±â À§ÇÑ ÃÖÀûÈ­ ¼ö¹ýÀ¸·Î´Â Á¦¾à¼øÂ÷¼±Çü°èȹ ¹ýÀ» ÀÌ¿ëÇÏ¿´´Ù. º» ¿¬±¸¸¦ ÅëÇÏ¿© Á¦¾ÈµÈ ¹æ¹ýÀ» ¼öÄ¡ÇØ¼®ÀÚ·á ¹× ÇöÀå°èÃøÀڷḦ ÀÌ¿ëÇÏ¿© °ËÁõÇÏ¿´´Ù.
This paper presents a back-calculation technique leer the prediction of the behavior of earth wall inserted in multi-layered soil deposit. The soil properties are back-calculated from the measured displacement at each construction stage and the behavior of earth wall far the next construction stage is predicted using back-calculated soil properties. For multi-layered soil deposit, the back-calculation would be very difficult due to the increase in the number of variables. In this study, to solve this difficulty, the back-calculation was performed successively from the lowest layer to the upper layers. An efficient elasto-plastic beam-column analysis was used for forward analysis to minimize the computation time of iterative back-calculation procedure. The coefficients of subgrade reaction and lateral earth pressure necessary for the formation of p-y curve were selected as back calculation variables, and to minimize the effect of abnormal behavior of the wall which might be caused by any unexpected action during construction, the difference between measured displacement increment and computed displacement increment at each construction stages is used as the objective function of optimization. The constrained sequential linear programming was used for the optimization technique to found values of variables minimizing the objective function. The proposed method in this study was verified using numerically generated data and measured field data.
 
Ű¿öµå
Back analysis;Beam-column analysis;Earth wall;Multi-layered subgrade;Optimization;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.1, 2002³â, pp.71-78
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921043979)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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