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Çѱ¹Áö¹Ý°øÇÐȸ / v.12, no.3, 1996³â, pp.49-62

( Finite Elerllent Analysis of the Pull-out Test )
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Àι߽ÃÇèÀº º¸°­Åä ±¸Á¶¹°ÀÇ ¼³°è¿¡ ÀÖ¾î º¸°­Àç¿Í Èë»çÀÌÀÇ °­µµ Á¤¼ö¸¦ °áÁ¤Çϴµ¥ »ç¿ëµÈ´Ù. ±×·¯³ª ÀÌ ½ÃÇèÀÇ ÇØ¼®½Ã º¸°­À縦 µû¶ó ¹ß»ýÇÏ´Â Àü´Ü°­µµ°¡ ÀÏÁ¤ÇÑ °ÍÀ¸·Î °¡Á¤Çϴµ¥ ÀÌ´Â Àι߽ÃÇèÁß Èë°ú º¸°­Àç »çÀÌÀÇ Á¡Áø¼º Àü´ÜÀ¸·Î ÀÎÇØ Èë°ú º¸°­ÀçÀÇ Àü´Ü-º¯À§ °ü°è °è»ê½Ã ¿À·ù°¡ ¹ß»ýÇÏ°Ô µÈ´Ù. ±¸°ú º¸°­Àç »çÀÌÀÇ shear stiffness°è»ê½Ã Á¡Áø¼ºÀü´ÜÀÇ ¿µÇâÀ» Æò°¡Çϱâ À§ÇÏ¿© À¯ÇÑ¿ä¼Ò¹ýÀ¸·Î Àι߽ÃÇéÀ» ÇØ¼®ÇÏ¿´´Ù. Èë°ú º¸°­Àç´Â ¼±Çü°ú ºñ¼±Çü°Åµ¿À¸·Î ä¼®ÇÏ¿´°í shear stiffnss´Â ÀϹÝÀûÀÎ ¹æ¹ýÀ¸·Î °è»êÇÏ¿´´Âµ¥ ¼öÁ¤µÈ shear stiffness¿Í´Â ¸¹Àº Â÷À̰¡ ÀÖ¾úÀ¸¸ç ±× Â÷ÀÌ·Î ÀÎÇØ À¯ÇÑ¿ä¼ÒÇØ¼®ÀÇ °á°ú°¡ ´Þ¶óÁö°Ô µÈ´Ù. º» ³í¹®¿¡¼­´Â À¯ÇÑ¿ä¼ÒÇØ¼®°á°ú¿Í ½ÃÇèÄ¡¸¦ ºñ±³ ºÐ¼®ÇÏ¿´À¸¸ç °³¼±µÈ Àι߽ÃÇè ÇØ±Ø¹æ¹ý¿¡ ´ëÇÏ¿© ³íÇÏ¿´´Ù.
The pull-out test is a common test for detemining the strength and deformation parameters between reinforcement and soil inl the design of reinforced earth structures. It is often assumed in the interpretation of the results from the test that the mobilization of shear strength along the reinforcement is uniform. The progressive shearing at the soil-reinforcement interface during the pull-out test often leads to incorrect calculation of the shear displacement response between the reinforcement and the soil. To investigate the effect of progressive shearing during the calculation of the shear stiffness of the soil-reinforcement interface, the finite element method is used to simulate the pullout test. The reinforcement, soil and interface behaviors are modeled by rosing linear and non-linear constitutive models. Shear stiffnesses are calculated by uaiHg conventional methods. It is found that there are considerable discrepancies 13etween the calculated shear stiffnesses and the correct stiffnesses which are used in the finite element analysis. The amount of error depends on the relative stiffness between reinforcement and soil and the size of the specimen being analyzed. The finite element results are also compared with the observed response from laboratory experiments. A revised interpretation of the pull-out test results is discussed.
 
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Pull-out Test;Finite Element Analysis;Progressive Shearing;Shear Stiffness;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.12, no.3, 1996³â, pp.49-62
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920446535)
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