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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.6, 2003³â, pp.387-395
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»ïÃà¾ÐÃà ½ÃÇè±â¸¦ ÀÌ¿ëÇÑ ¸»¶Ò ÁöÁö Àü¸é ±âÃÊ °Åµ¿ ¿¬±¸
( A Study on the Behavior of Piled Raft Foundation Using Triaxial Compression Apparatus ) |
| ÀÌ¿µ»ý;È«½ÂÇö; °æ±â´ëÇб³ Åä¸ñ°øÇаú;°æ±â´ëÇб³ Åä¸ñ°øÇаú ´ëÇпø;
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| »çÁúÅä Áö¹Ý¿¡¼ ¸»¶ÒÁöÁö Àü¸é±âÃÊÀÇ °Åµ¿À» ¿¬±¸Çϱâ À§ÇÏ¿© ¸ðÇü½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ƯÈ÷ º» ¿¬±¸¿¡¼´Â ±âÁ¸ÀÇ ¸ðÇü½ÃÇè¿¡¼ ±¸ÇöÇϱ⠾î·Á¿î ±¸¼ÓÀÀ·Â ÀçÇϸ¦ À§ÇÏ¿© »ïÃà¾ÐÃà ½ÃÇè±â¸¦ ÀÌ¿ëÇÏ´Â ¹æ¹ýÀ» °í¾È, Àû¿ëÇÔÀ¸·Î½á ±¸¼Ó ÀÀ·Â ÀÛ¿ë »óÅ¿¡¼ ¸»¶ÒÁöÁö Àü¸é±âÃÊÀÇ °Åµ¿À» ÆÄ¾ÇÇϰíÀÚ ÇÏ¿´´Ù. Á÷°æ 6mmÀÇ °ºÀ°ú µÎ²² 8mm(Á÷°æ 50mm)ÀÇ ¾Ë·ç¹Ì´½ ÆÇÀ¸·Î ¸»¶Ò°ú Àü¸é±âÃÊ ¸ðÇüÀ» °¢°¢ Á¦ÀÛÇÏ¿© ¸ðÇü½ÃÇè¿¡ ÀÌ¿ëÇÏ¿´´Ù. ½Ã·áÀÇ ±ÕÁú¼º È®º¸¸¦ À§ÇÏ¿© ÁÖ¹®Áø Ç¥Áػ縦 »ç¿ëÇÏ¿´À¸¸ç, »ïÃà¾ÐÃà ½ÃÇè±â ³»¿¡ ¸»¶ÒÁöÁö Àü¸é±âÃÊ ¸ðÇüÀ» ¼³Ä¡ÇÑ °ø½Ãü¸¦ °ÅÄ¡ÇÑ ÈÄ ±¸¼ÓÀÀ·ÂÀ» ÀçÇÏ ÇÏ°í ¾ÐÃà ÇÏÁßÀ» °¡ÇÏ¿´´Ù. ÀÌ¿Í °°Àº ½ÃÇè ¹æ¹ýÀ¸·Î ±¸¼ÓÀÀ·ÂÀÇ º¯È, ¸»¶Ò °³¼öÀÇ º¯È, ¸»¶Ò ±æÀÌ º¯È¿¡ µû¶ó ÁöÁö·Â Áõ°¨ ºñÀ², ÇÏÁß ºÐ´ã·ü ¹× ħÇÏ Àú°¨ È¿°ú¸¦ Áß½ÉÀ¸·Î ºÐ¼®ÇÏ¿´À¸¸ç, ±¸¼Ó¾Ð¿¡ µû¸¥ ¸»¶Ò ÁöÁö·Â°ú Áָ鸶Âû ÀúÇ×·ÂÀ» °è»êÇÏ¿´´Ù. ½ÇÇè °á°ú Àü¸é±âÃÊ¿¡ ¸¶Âû ¸»¶ÒÀ» ¼³Ä¡ÇÏ¿´À» ¶§ ÁöÁö·Â Áõ°¡¿Í ħÇÏ Àú°¨ È¿°ú°¡ ¶Ù¾î³ °ÍÀ¸·Î È®ÀεǾú´Ù. ƯÈ÷ ¸»¶Ò ±æÀÌ Áõ°¡¿¡ ºñÇÏ¿© ¸»¶Ò °³¼ö Áõ°¡ ½Ã ÁöÁö·Â Áõ´ë È¿°ú¿Í ħÇÏ ¾ïÁ¦ È¿°ú°¡ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¾ÕÀ¸·Î ÀÌ·¯ÇÑ ¼Ò±Ô¸ð »ïÃà¾ÐÃà ½ÃÇè ¹æ¹ýÀ» ÀÌ¿ëÇÏ¿© ±¸¼ÓÀÀ·Â ÇÏ¿¡¼ÀÇ ¸»¶Ò ÇÏÁß ÀüÀÌ Çö»ó µî¿¡ ´ëÇÑ ¿¬±¸µµ °¡´ÉÇϸ®¶ó ÆÇ´ÜµÈ´Ù. |
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| Model tests were conducted to study the behavior of the piled raft foundation system on sands. Especially in this study, the method using the triaxial compression apparatus was devised and used to apply the confining pressure which is considered difficult in the existing model test on the soil. Steel rods (6mm dia.) and aluminum plates (8mm thickness, 50mm dia.) were used to simulate piles and rafts respectively. Jumunjin standard sands were used to ensure the homogeneity of the sample. After the sample with the piled raft model was laid inside the triaxial cell, the confining pressure was applied and then the compressive force was applied. The increase and/or decrease ratio of the bearing capacity, the load distribution ratio between raft and piles and the effect of settlements decrease depending on the confining pressure, the number of piles and the length of piles were analyzed and the bearing capacity and skin friction of the pile was calculated. By the results of these experiments, the bearing capacity increased and the settlement decreased with this piled raft foundation system. Especially the effect was larger with the increase of the number of piles than with the increase of length of piles. Hereafter, the study of the load transfer mechanism of piles under confining pressure would be made possible using these small model tester like triaxial compression apparatus. |
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| Ű¿öµå |
| Bearing capacity;Piled raft;Settlement;Triaxial compression apparatus; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.6, 2003³â, pp.387-395
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922148168)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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