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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.5, 2003³â, pp.343-354
Scale Effect¸¦ °í·ÁÇÑ ±âÃÊÀÇ ÁöÁö·Â ¹× ħÇÏ·® »êÁ¤À» À§ÇÑ ¸ðÇü½ÇÇè
( Model Tests on the Bearing Capacity and Settlement of Footing Considering Scale Effect )
Á¤Çü½Ä;±èµµ¿­;±èÁ¤È£; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;°æº¹´ëÇÐ Åä¸ñ¼³°è°ú;ÇѾç´ëÇб³ Åä¸ñ°øÇаú;
 
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ÀçÇÏÆÇ°ú ½ÇÁ¦±âÃÊÀÇ Å©±â°¡ »óÀÌÇϹǷΠÆòÆÇÀçÇϽÃÇèÀ¸·ÎºÎÅÍ ½ÇÁ¦ ±âÃÊÁö¹ÝÀÇ ÁöÁö·Â ¹× ħÇÏ·®À» »êÁ¤ÇÒ ¶§, Scale Effect°¡ °í·ÁµÇ¾î¾ß ÇÑ´Ù. º» ³í¹®¿¡¼­´Â 5Á¾·ùÀÇ ¸ðÇü±âÃÊÁö¹ÝÀ» Çü¼ºÇϰí, Å©±â°¡ °¢°¢ l0cm, 15cm, 20cm, 25cmÀÎ 4°¡Áö Å©±âÀÇ Á¤»ç°¢Çü ÆòÆÇÀ¸·Î ÀçÇϽÃÇèÀ» ½Ç½ÃÇÏ¿© ÀçÇÏÆÇÀÇ Å©±â¿¡ µû¸¥ ÁöÁö·Â ¹× ħÇÏ Æ¯¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ¶ÇÇÑ ºÐ¼®µÈ °á°ú¸¦ Åä´ë·Î ÇÏ¿©, ÆòÆÇÀçÇϽÃÇèÀ¸·ÎºÎÅÍ ½ÇÁ¦±âÃÊÀÇ ÁöÁö·Â ¹× ħÇÏ·®À» »êÁ¤ÇÒ ¶§, ¸ð·¡¿Í Á¡ÅäÀÇ È¥ÇÕºñÀ²¿¡ µû¶ó Scale Effect¸¦ ÇÕ¸®ÀûÀ¸·Î °í·ÁÇÒ ¼ö ÀÖµµ·Ï ½ÄÀ» Á¦¾ÈÇÏ¿´À¸¸ç, ½Ä¿¡¼­ ÁöÁö·Â »êÁ¤°è¼ö(a,b)¿Í ħÇÏ·® »êÁ¤°è¼ö(c,d)´Â ¸ð·¡¿Í Á¡ÅäÀÇ È¥ÇÕºñÀ²¿¡ µû¶ó ±¸ÇÒ ¼ö ÀÖµµ·Ï ±×¸²À¸·Î Á¦½ÃÇÏ¿´´Ù. Áö±Ý±îÁö´Â ÇöÀå±âÃÊÁö¹Ý¿¡ ´ëÇÑ ÁöÁö·Â ¹× ħÇÏ·®À» ÇÕ¸®ÀûÀ¸·Î Æò°¡ÇÒ ¼ö ¾ø¾î ºñ°æÁ¦ÀûÀÎ ½Ã°øÀÌ µÇ¾î¿ÔÀ¸³ª, º» ¿¬±¸¿¡¼­ Á¦¾ÈÇÑ ÁöÁö·Â ¹× ħÇÏ·® »êÁ¤¹æ¹ý¿¡¼­´Â ¸ð·¡¿Í Á¡ÅäÀÇ È¥ÇÕºñÀ²À» °í·ÁÇÏ¿© ±âÃÊÁö¹ÝÀÇ ÁöÁö·Â ¹× ħÇÏ·®À» º¸´Ù ÇÕ¸®ÀûÀ¸·Î ÃßÁ¤ÇÒ ¼ö ÀÖÀ¸¹Ç·Î ±âÃÊÁö¹ÝÀÇ ¾ÈÁ¤¼º ¿©ºÎ¿¡ ´ëÇÑ È®½Å°ú, ¶ÇÇÑ °æÁ¦ÀûÀÎ ½Ã°øÀÌ °¡´ÉÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
The scale effect should be considered to determine the bearing capacity and settlement of footings from Plate-Load Test, because of the size difference between a footing and a loading plate. To analyze characteristics of bearing capacity and settlement according to the difference of loading plate sizes, model tests were performed with four different sizes of square plate, which are B=10, 15, 20 and 25cm, on five different kinds of subsoil. Based on the analyzed results, this paper also proposes a method of bearing capacity and settlement determination, where scale effect is considered depending on the mixing ratio of sand and clay. Until now, uneconomic constructions have been conducted because of unreasonable evaluation in estimating bearing capacity and settlement of footings from Plate-Load Test in fields. In the application of the formula proposed in this research to field problems, it is expected that evaluation of bearing capacity and settlement of footings can be more reliable and more economic construction can be achieved.
 
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Model test;Plate-load test;Scale effect;Settlement;Ultimate bearing capacity;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.5, 2003³â, pp.343-354
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921979371)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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