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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.7, 2010³â, pp.135-145
ºñÁ¡Âø¼º Áö¹Ý»ó ÆØÀ̱âÃÊ Àû¿ë¿¡ µû¸¥ ÁöÁöƯ¼º
( The Bearing Capacity Characteristics of Top Base Foundations in Cohesionless Soils )
±èÂù±¹;±èÇй®; û¼®¿£Áö´Ï¾î¸µ Åͳλç¾÷ºÎ;´Ü±¹´ëÇб³ Åä¸ñȯ°æ°øÇаú;
 
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ÃÖ±Ù±îÁö ±¹³»¿¡¼­´Â ÆØÀ̱âÃÊ¿¡ °üÇÑ ¿¬±¸°¡ ¹ÌÈíÇÏ¿´°í, Áö¹ÝÁ¶°Ç¿¡ ¸Â´Â ¼³°è±âÁØÀÌ ¸¶·ÃµÇ¾î ÀÖÁö ¸øÇÏ¿© ÀϺ»ÀÇ ¼³°è±âÁØÀ» ±×´ë·Î »ç¿ëÇϰí ÀÖ´Â ½ÇÁ¤ÀÌ´Ù. ÀÌ·Î ÀÎÇØ ±âÁ¸ ÆØÀ̱âÃÊÀÇ ÁöÁö·Â½ÄÀº °ú¼ÒÇÏ°Ô ¿¹ÃøµÇ´Â ¹®Á¦Á¡ÀÌ ÀÖ´Ù. µû¶ó¼­ º» ¿¬±¸¿¡¼­´Â ½ÇÁ¦Å©±âÀÇ 1/5 ½ºÄÉÀÏ·Î Ãà¼ÒÇÑ ¸ðÇü½ÇÇèÀ» ¼öÇàÇÏ¿´À¸¸ç, ±¹³»¿¡¼­ ÀÌ·ç¾î Áø 100¿©°³ ÇöÀåÀÇ ÀçÇϽÇÇè °á°ú¸¦ ±Ù°Å·Î °­µµÆ¯¼º(N°ª), ÁöÇϼö¿µÇâ, ÆØÀ̱âÃÊÀÇ ÆÄ±«Çü»óÀ» °í·ÁÇÏ¿© º¸´Ù ÇÕ¸®ÀûÀ¸·Î ÆØÀ̱âÃÊÀÇ ÁöÁö·ÂÀ» ¿¹ÃøÇÒ ¼ö ÀÖ´Â ½ÄÀ» Á¦¾ÈÇÏ¿´´Ù.
Top Base Foundation (TBF) is widely used for the increment of bearing capacity and restraining settlement of foundations when the bearing capacity of ground is not enough. The design of bearing capacity obtained from exiting Japanese standard underestimates considerably what is compared with the observation values from the field measurement. Therefore, intensive model tests and site observation programs are carried out to establish more reasonable prediction technique and understanding of TBF in soft ground. In this study, 1/5 scale model tests are performed in order to investigate the behavior of TBF with various shapes in a laboratory. Also, about 100 sites measurement data are evaluated to investigate the field behavior of TBF in various ground conditions. Based on the results of the model tests and field measurement data, it was possible to introduce more reasonable bearing capacity equations of TBF considering N-value of soils, the effect of underground water and failure mechanisms.
 
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Bearing capacity equation;Failure shape;The effect of underground water;Top base foundations;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.7, 2010³â, pp.135-145
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201033062364996)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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