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Çѱ¹Áö¹Ý°øÇÐȸ / v.7, no.3, 1991³â, pp.51-64
ÇÏÁß ÀÛ¿ë ¹æÇâ(¾ÐÃà°ú Àιß)°ú ¸»¶ÒÀÇ Á÷°æÀÌ ¸»¶Ò ÁöÁö·Â¿¡ ¹ÌÄ¡´Â ¿µÇâ
( The Influence of the Direction of Applied Load(Compression and Uplift) and the Diameter of the Pile on the Pile Bearing Capacity )
À̸íȯ;À±¼ºÁø; Á¤È¸¿ø, Çѱ¹°úÇбâ¼ú¿ø;Á¤È¸¿ø, »ï¼ºÁ¾ÇհǼ³(ÁÖ), ±â¼ú¿¬±¸¼Ò, »ï¼º Á¾ÇհǼú(ÁÖ), ±â¼ú¿¬±¸¼Ò;
 
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¸»¶Ò±âÃÊ ¼³°èÀÇ ½Å·Úµµ¹× °æÁ¦¼º Çâ»óÀ» À§Çؼ­´Â ¸»¶Ò ÁöÁö·Â ¿¹ÃøÀÇ ½Å·Úµµ Á¦°í°¡ ÇʼöÀûÀÌ´Ù. ÇöÀç±îÁö ¼ö¸¹Àº ¸»¶ÒÁöÁö·Â ¿¹Ãø ¹æ¹ýµéÀÌ Á¦¾ÈµÇ¾î ¿ÔÀ¸³ª ¸»¶ÒÀçÇϽÃĨ¿¡ ÀÇÇÏ´Â ¹æ¹ý¿Ü¿¡´Â ±× ½Å·Úµµ°¡ º¸ÀåµÇÁö ¸øÇÏ´Â °ÍÀÌ Çö½ÇÀÌ´Ù. ±×·¯³ª ¸»¶ÒÀçÇϽÃÇèÀº »ó´çÇÑ ½Ã°£°ú ºñ¿ëÀÌ ¼Ò¿äµÇ¾î Ȱ¼ºÈ­ µÇÁö ¸øÇÏ¿´´Ù. ¸»¶ÒÀÇ Áָ鸶Âû·ÂÀ» ¼±´ÜºÎ ÀçÇÏÀÇ ¹Ý·ÂÀ¸·Î ÀÌ¿ëÇÏ´Â SPLTÀÇ °³¹ßÀº ÀÌ·¯ÇÑ ¹®Á¦Á¡ µéÀ» ÇØ¼ÒÇÒ ¼ö ÀÖ´Â ¹æ¾ÈÀ¸·Î ½Ç¹«¿¡ Àû¿ëÀÌ È®»êµÇ°í ÀÖ´Ù. SPLT¿¡¼­´Â Áָ鸶Âû·Â°ú ¼±´ÜÀúÇ×À» ºÐ¸® ÃøÁ¤ÇÏ¿© ¸»¶ÒÁöÁö·Â ÇØ¼®ÀÇ ½Å·Úµµ¸¦ ³ô¿©ÁÙ ¼ö ÀÖ´Â ÀÌÁ¡ÀÌ ÀÖ´Â ¹Ý ¸é, Áָ鸶ÂûºÎ¿¡ ÀÛ¿ëÇÏ´Â ÇÏÁßÀÇ ¹æÇâÀÌ ±âÁ¸ÀÇ ÀçÇϽÃÇè°ú ¹Ý´ë·Î µÇ´Â ¹®Á¦Á¡°ú Ãà¼ÒµÈ ¼±´ÜºÎ »ç¿ëÀÇ ¿µÇâÀÌ ¸íÈ®È÷ ±Ô¸íµÇÁö ¸øÇÑ ¹®Á¦Á¡ÀÌ ÇØ°áµÇ¾î¾ß ÇÒ °úÁ¦·Î Á¦±âµÇ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­ ´Â ÀÌ·¯ÇÑ ¿µÇâÀ» ¾Ë¾Æº¸±â À§ÇÏ¿© Á÷°æ 406mmÀÇ °­°ü¸»¶ÒÀ» »ç¿ëÇÏ¿© SPLTÀÇ 1´Ü°è, 2´Ü°è ½ÃÇè ÈÄ Àç·¡½Ä ÀçÇϽà ĨÀ» ¼öÇàÇÏ¿´´Ù. ¿¬±¸°á°ú¿¡ ÀÇÇϸé Àι߽ÃÀÇ Áָ鸶Âû·ÂÀº ¾ÐÃà½ÃÀÇ °ªº¸´Ù ³·Àº °ÍÀ¸·Î ³ªÅ¸³ª SPLT°á°ú¸¦ ½Ç ¹«¿¡ Àû¿ëÇϵý ¾ÈÀüÀ²À» ³ô¿©ÁÖ´Â È¿°ú¸¦ ÁÖ¸ç, Ãà¼ÒµÈ ¼±´ÜºÎ »ç¿ëÀº Ä¡¼öÈ¿°ú (scaleeffect)¿¡ ´ëÇÑ ÀûÀýÇÑ ÇØ¼®ÈÄ Àû¿ëÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ³ªÅ¸³­´Ù.
The reliable estimation of pile bearing capacity is essential for the improvement of the re- liability and the cost-effectiveness of the design. There have been numerous pile bearing capacity prediction methods proposed up to now, however, execpt for the estimation made from the result of the pile loading test, not one method is appropriate for the reliable prediction. Due to the considerable time and expenses required to carry out the pile loading test, the test has seldom been utilized. The development of Simple Pile Loading Test(SPLT) which utilizes the pile skin friction as the required reaction force to cause the pile tip settlement, provides a solution to perform more pile loading tests and consequently a more economical pile design is possible. The separate measurement of skin friction and tip resistance during the course of performing SPLT provides a better understanding of the pile behavior than the result of the conventional pile loading test where only the total resistance is measured. On the other hand, there are some points to be clarified in order to apply the test results of SPLT to practical problem. They are the direction of the applied load to mobilize the skin friction and the use of reduced sized sliding core. In this research, both the SPLT and the conventional pile loading test on 406mm diameter steel pipe pile have been performed. From the result, it would be safe to use the measured SPLT skin friction value directly in the design, since the value is somewhat lower than the value measured in the conventional test. It is further assumed that the tip resistance value of the reduced sized sliding core should properly be analysed by taking the incluonce of scale effect into consideration.
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.7, no.3, 1991³â, pp.51-64
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199111920444296)
¾ð¾î : Çѱ¹¾î
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