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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.5, 1999³â, pp.65-80
ºñ±ÕÁú »çÁúÅä Áö¹Ý¿¡¼­ ´ÜÀÏ ÈÚ¼º¸»¶ÒÀÇ ¼öÆò°Åµ¿¿¡ ´ëÇÑ ¸»¶Ò µÎºÎ ±¸¼ÓÈ¿°ú ¿¬±¸
( Effect of Pile Head Constraint on Lateral Behavior of Single Flexible Pile in Non-homogeneous Sand )
±èº´Å¹;±è¿µ¼ö;Á¤¼º°ü; °æºÏ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;°æºÏ´ëÇб³ ³ó°ú´ëÇÐ Á¶°æÇаú;
 
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º» ³í¹®Àº 2°³ ÃþÀ¸·Î ÀÌ·ç¾îÁø ºñ±ÕÁú ³«µ¿°­ »çÁúÅä Áö¹Ý¿¡¼­ ¼öÆòÇÏÁßÀ» ¹ÞÀº ´ÜÀÏ ÈÚ¼º¸»¶ÒÀÇ ¼öÆò°Åµ¿¿¡ ´ëÇÑ ¸ðÇü½ÇÇè °á°úµéÀ» °íÂûÇÏ¿´´Ù. º» ¿¬±¸ÀÇ ¸ñÀûÀº ¸»¶ÒÀÇ ¼öÆò°Åµ¿ Ư¼º¿¡ ´ëÇÑ ¸»¶ÒµÎºÎ ±¸¼ÓÁ¶°Ç(Free & Fix), ¸»¶Ò ±ÙÀÔ±æÀÌ¿¡ ´ëÇÑ ÇϺÎÁö¹ÝÀÇ µÎ²²ºñ(H/L), ±×¸®°í »óÇϺÎÁö¹ÝÀÇ Áö¹Ý¹Ý·Â°è¼öºñ$(E_{h1}/E_{h2)$ÀÇ ¿µÇâ¿¡ °üÇÏ¿© ½ÇÇèÀûÀÎ ¿¬±¸¸¦ ¼öÇàÇϰí ÀÌ·¯ÇÑ ¿µÇâµéÀ» Á¤·®È­ ÇÒ ¼ö ÀÖ´Â ½ÇÇè°á°ú¸¦ ¾ò¾ú´Ù. ¸ðÇü½ÇÇè °á°úµé¿¡ ÀÇÇϸé, ºñ±ÕÁú Áö¹Ý¿¡¼­ ¼öÆò°Åµ¿Àº$(E_{h1}/E_{h2)$¿¡µµ ÀÇÁ¸ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¼öÆòº¯À§ Ãø¸é¿¡¼­ÀÇ ±ÕÁúÁö¹Ý¿¡ ´ëÇÑ ºñ±ÕÁú Áö¹ÝÀÇ ¼öÆòº¯À§ºñ$(y_{H/L}/y_{H/L}=0,; y_{H/L}/y_{H/L}=1.0)$¿Í ¸»¶Ò ±ÙÀÔ±æÀÌ¿¡ ´ëÇÑ ÇϺÎÁö¹ÝÀÇ µÎ²²ºñ(H/L)ÀÇ °ü°è´Â Áö¼ö ÇÔ¼ö½ÄÀ¸·Î Ç¥ÇöµÇ´Â ½ÇÇè½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. ¶ÇÇÑ, º» ¿¬±¸¿¡¼­´Â ÃÖ´ë ÈÚ¸ð¸àÆ® Ãø¸é¿¡¼­ÀÇ H/L °ú $MBM_{fixed-head}/MBM_{free-head}$°ü°è´Â ¸ðÇü½ÇÇè °á°úµé·ÎºÎÅÍ Á÷¼±ÇÔ¼öÀÇ ½ÇÇè½ÄÀ» Á¦¾ÈÇÏ¿´´Ù.
This paper shows the results of a series of model tests on the behavior of single flexible pile, which is subjected to lateral load, in non-homogeneous Nak-Dong River sands, consisting of two layers. The purpose of the present paper is to investigate the effects of ratio of lower layer thickness to embedded pile length, ratio of soil modulus of upper layer to lower one, and pile head constraint condition on the characteristics of lateral behavior of single pile. These effects can be quantified only by the results of model tests. Based on the results of model tests, in non-homogeneous sand, it was found that the lateral behavior depends upon the ratio of soil modulus of upper layer to lower one. And, in respect of deflection, it was found that the relationship between the deflection ratio of non-homogeneous to homogeneous sand and the ratio of lower layer thickness to embedded pile length can be fitted to exponential function of H/L and lateral load by model tests results. Also, in respect of maximum bending moment, it was found that the relationship H/L and $MBM_{fixed-head}/MBM_{free-head}$ can be fitted to linear function of H/L by model test results.
 
Ű¿öµå
Laterally loaded pile;Non-homogeneous;Fix head;Model test;Two layers;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.5, 1999³â, pp.65-80
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749535)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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