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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.3, 1999³â, pp.99-111

( An Experimental Study on the Bearing Characteristics of Auger-Cast Pile Installed Using Expansive Mortar )
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õ°ø±¼ÂøÀ» ¼±ÇàÇÏ°Ô µÇ´Â ¹èÅäÇü auger-cast ¸»¶ÒÀÇ °æ¿ì, ±¼Âø ¹× Áö¹Ý±³¶õ¿¡ ÀÇÇÑ È¾¹æÇâÀÀ·ÂÀÇ °¨¼Ò·Î ÀÎÇÏ¿© Áָ鸶Âû·ÂÀÌ Å¸ÀÔ½Ä ¸»¶Ò¿¡ ºñÇØ ÀÛ°Ô ¹ßÈֵǴ °ÍÀÌ ÀϹÝÀûÀÌ´Ù. ÀÌ·¯ÇÑ auger-cast¸»¶ÒÀÇ Áָ鸶Âû·ÂÀ» Çâ»ó½Ãų ¼ö ÀÖ´Â ¹æ¹ýÀ¸·Î ÆØÃ¢Á¦ÀÇ »ç¿ë°ú °¡¾ÐÁÖÀÔÀÇ Àû¿ëÈ¿°ú¸¦ °íÂûÇϰíÀÚ ´ÙÁü Á¶¼ºµÈ È­°­Ç³È­Åä Áö¹Ý¿¡¼­ÀÇ ÆØÃ¢¼º ¸ôÅ»À» »ç¿ëÇÑ auger-cast ¸ðÇü¸»¶ÒÀÇ ½Ç³»½ÇøÀ» ½Ç½ÃÇÏ¿´´Ù. ¸ðÇü¸»¶ÒÀº ÆØÃ¢Á¦ÀÇ ¾ç°ú ÁÖÀÔ¹æ¹ý, ±×¸®°í ÅäÁ¶°¡¾ÐÀÇ Á¶°ÇµéÀ» º¯È­½ÃŰ¸é¼­ ¸ðÇüÅäÁ¶¾È¿¡ Á¦À۵Ǿú´Ù. ½ÇÇè°á°ú ÆØÃ¢Á¦ÀÇ »ç¿ëÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ¸»¶ÒÀÇ Áָ鸶Âû·ÂÀÌ Á¡Á¡ Áõ°¡ÇÏ´Â °æÇâÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ÀÌ·¯ÇÑ Áõ°¡ÀÇ ÆøÀº °¡¾ÐÁÖÀÔÀÌ Àû¿ëµÇ¾úÀ» ¶§ ´õ ¶Ñ·ÇÇÏ°Ô ¹ß»ýÇÏ¿´´Ù. ÀÏ¹Ý ¸ôÅ»À» °¡¾Ð ¾øÀÌ ÁÖÀÔÇÏ¿© ½Ã°øÇÑ ¸»¶ÒÀÇ Áָ鸶Âû·Â°ú ºñ±³ÇÏ¿©, °¡¾ÐÁÖÀÔ ¾øÀÌ ÆØÃ¢Á¦¸¸ »ç¿ëµÈ °æ¿ì, ±×¸®°í ÆØÃ¢Á¦¿Í °¡¾ÐÁÖÀÔÀÌ º´ÇàµÇ¾î »ç¿ëµÇ¾îÁø °æ¿ì °¢°¢ 2%, ±×¸®°í 56%±îÁö Áָ鸶Âû·ÂÀÌ Áõ°¡µÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The frictional capacity of auger-cast piles is often very small because of the disturbance of the soil surrounding the pile during the excavation process. Usage of expansive agents and a pressurized injection technique for auger-cast piles should improve the frictional resistance between pile and soil. This paper presents the test results of auger-cast model piles installed with expansive mortar in laboratory compacted weathered soil. The model piles were installed in a calibration chamber with a variation in the amount of expansive agent, the injection process and the chamber pressure. It was observed that the pile shaft resistance increases with the increased amount of expansive agent, and also increases when mortar is pressure injected. The shaft resistance increased up to 24% for the pile installed only with expansive mortar and increased up to 56% for the pile installed with the pressurized injection of expansive mortar, compared with that of piles with plain mortar.
 
Ű¿öµå
Expansive mortar;Model pile;Shaft resistance;Auger-cast pile;Calibration chamber;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.3, 1999³â, pp.99-111
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749220)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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