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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.11, 2008³â, pp.71-77
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( Estimation of Ultimate Lateral Resistances of Piles Using CPT Cone Resistance in Sand ) |
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| º» ¿¬±¸¿¡¼´Â CPT °á°úÀÎ ÄܰüÀÔÀúÇ×Ä¡ $q_c$°ªÀ» ÀÌ¿ëÇÏ¿© ¸»¶ÒÀÇ ±ØÇѼöÆò´ÜÀ§ÁöÁö·ÂÀ» »êÁ¤¹ýÀ» Á¦¾ÈÇϰíÀÚ ÇÑ´Ù. ÀÌ´Â ±âÁ¸ÀÇ Áö¹Ý¹°¼ºÆò°¡¸¦ ÀÌ¿ëÇÏ¿© Æò°¡µÇ¾î ¿À´ø °£Á¢ÀûÀÎ ¹æ¹ý°ú ºñ±³ÇÏ¿©, ÇöÀåÃøÁ¤Ä¡ÀÇ Á÷Á¢Àû Àû¿ëÀ» À§ÇÑ ±ØÇѼöÆò´ÜÀ§ÁöÁö·Â »êÁ¤¹ý °³¹ßÀ» ¸ñÇ¥·Î Çϰí ÀÖ´Ù. Á¡Âø·ÂÀÌ ¾ø´Â »çÁúÅä Áö¹ÝÀ» ´ë»óÀ¸·Î ÃøÁ¤µÈ ÄܰüÀÔÀúÇ×Ä¡ $q_c$°ªÀº »çÁúÅäÁö¹Ý¿¡¼ Áß¿äÇÑ ¿ä¼ÒÀÎ »ó´ë¹Ðµµ, ¿¬Á÷ÀÀ·Â, ¼öÆòÀÀ·Â¿¡ ´ëÇÑ ÇÔ¼ö·Î Ç¥ÇöµÇ¸ç, ÀÌ´Â ±âÁ¸¿¡ Á¦¾ÈµÇ¾î¿Â ±ØÇѼöÆòÁöÁö·ÂÀÇ »êÁ¤¿¡ °í·ÁµÇ´Â ¿ä¼Òµé°ú À¯»çÇÏ´Ù. ÀÌ·¯ÇÑ ¿ªÇÐÀû À¯»ç¼ºÀ» ¹ÙÅÁÀ¸·Î CPT°á°ú¸¦ ÀÌ¿ëÇÑ ±ØÇѼöÆò´ÜÀ§ÁöÁö·Â »êÁ¤½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. ÀÌ´Â Á¡Âø·ÂÀÌ ¾ø´Â »çÁúÅä¿¡ ´ë»óÀ¸·Î Çϰí ÀÖÀ¸¸ç, ±×¿¡ ´ëÇÑ ÇØ¼®À» À§ÇØ ÇØ¼®´ë»óÁö¹ÝÀ» ´ë»óÀ¸·Î Á¦¾ÈµÈ »êÁ¤½ÄÀÇ ½Å·Ú¼ºÀ» È®º¸ÇÏ¿´´Ù ±ØÇѼöÆò´ÜÀ§ÁöÁö·ÂÀÇ ÃøÁ¤°ª°ú ¿¹Ãø°ª¿¡ µû¸¥ ºñ±³¿¡ ´ëÇØ Ç¥ÁØÆíÂ÷´Â 0.279¸¦ º¸¿´À¸¸ç, COV´Â 0.272ÀÇ °ªÀ» º¸¿© ÃøÁ¤µÈ ±ØÇѼöÆò´ÜÀ§ÁöÁö·Â°ú ´ëüÀûÀ¸·Î À¯»çÇÑ °á°ú¸¦ º¸¿´À¸¸ç, Àü¹ÝÀûÀ¸·Î Á¦¾È½Ä¿¡ ÀÇÇØ ¿¹ÃøµÈ ±ØÇѼöÆò´ÜÀ§ÁöÁö·ÂÀÌ ½Ç³»¸ðÇü½ÇÇèÀ» ÅëÇÑ ÃøÁ¤°ª¿¡ ±ÙÁ¢ÇÔÀ» ¾Ë ¼ö ÀÖ´Ù. |
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| In this study, CPT-based methodology for estimating the ultimate lateral resistance, $p_u$, is proposed and verified for lateral loaded piles in sandy soil. Preexistent methods estimating the ultimate lateral resistance, $p_u$, and the ultimate lateral capacity, $H_u$, of pile have been based on the vertical effective stress, relative density, and the coefficient of lateral earth pressure. Similarly, cone resistance $q_c$ in pure sandy soil is expressed by those essential factors. As correlation between $p_u$ and $q_c$ are normalized with average effective stress ${sigma}_m$, estimation methodology for the lateral loaded pile of $p_u$ in sandy soil is proposed. The method is verified by calibration chamber test results in pure sand. The standard derivation of estimated $p_u$ is 0.279, and COV (Coefficient Of Variation) of estimated $p_u$ is 0.272. These results showed that the estimated pus by the method are analogous with the measured $p_us$ in calibration chamber test. |
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| Ű¿öµå |
| Cone penetration test;Lateral loaded pile;Sandy soil;Ultimate lateral capacity;Ultimate lateral resistance; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.11, 2008³â, pp.71-77
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200806135608616)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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