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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.4, 2007³â, pp.149-160
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¾Ï¹Ý¿¡ ¼³Ä¡µÈ ¼ÛÀüöž ½ÉÇü±âÃÊÀÇ Áָ鸶Âû·Â Æò°¡
( Side Friction of Deep Foundation for Transmission Tower in Rock ) |
| ±è´ëÈ«;ÀÌ´ë¼ö;õº´½Ä;±èº´È«; Çѱ¹Àü·Â°ø»ç Àü·Â¿¬±¸¿ø;Çѱ¹Àü·Â°ø»ç Àü·Â¿¬±¸¿ø;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| º» ³í¹®¿¡¼´Â ¼ÛÀüöž ½ÉÇü±âÃÊÀÇ Áָ鸶Âû·ÂÀ» Æò°¡ÇϰíÀÚ ÃæºÏ À½¼ºÁö¿ªÀÇ Æí¸¶¾Ï¿¡ ´ëÇØ ÃÑ 6ȸ(1/8±Ô¸ð 5ȸ, 1/2±Ô¸ð 1ȸ) ÇöÀå½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½ÃÇè°á°ú ÆÄ±«ÇüÅ´ ±âÃÊü¿Í ¾Ï¹ÝÀÇ ¸¶ÂûÆÄ±«°¡ ¾Æ´Ñ ±¼ÂøÀ¸·Î ÀÎÇÑ ¼Õ»óµÈ ÁÖº¯¾Ï¹Ý ¹× ±âÁ¸¾Ï¹ÝÀÇ Àý¸®»óÅ¿¡ Áö¹èµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, Áָ鸶Âû·Â Æò°¡°á°ú ±âÁ¸ÀÇ ¼ÛÀüöž ½ÉÇü±âÃÊ¿¡ Àû¿ëÇϰí ÀÖ´Â °ªº¸´Ù ¾à 20$sim$30% Áõ°¡µÇ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ±âÃÊŸ¼³½Ã »ç¿ëµÇ´Â ¶óÀ̳ÊÇ÷¹ÀÌÆ®ÀÇ ¿µÇâÀ» »ìÆìº¸°íÀÚ ±âÁ¸ öž ±âÃÊ¿¡ ´ëÇØ ½ÃÃßÁ¶»ç¸¦ 4ȸ ½Ç½ÃÇÏ¿´´Ù. ¶óÀ̳ÊÇ÷¹ÀÌÆ® ¹è¸éÄÜÅ©¸®Æ®ÀÇ ¾ÐÃà°µµ´Â Ÿ¼³½Ã ¼³°è°µµÀÇ 63$sim$72%¿´À¸¸ç, Áָ鸶Âû·ÂÀÇ ¼³°è±âÁØÄ¡¸¦ ¸¸Á·ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| Six prototype field tests (five 1/8 and one 1/2 scale tests) have been conducted in order to determine the uplift resistance of deep foundation for transmission line structures. Test sites, located in the city of Eumseng in Choongbuk province, are classified as gneiss. These test results reveal failures not along the foundation-rock interface but either along the damaged surrounding rock mass caused by excavation or along the pre-existing rock joint. Test results also show the uplift resistance which is 20 $sim$ 30% higher than the current design strength of side friction. In addition to fold tests, four concrete core samples between the liner plate and the surrounding rock mass have been obtained from the existing transmission foundations to study the effect of the liner plate which is installed prior to placing concrete. The compressive strength of these concrete core samples shows 63 $sim$ 72% of the strength at the time of foundation construction. Side frictional resistance based on such less compacted concrete reaches satisfying uplift design strength. |
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| Ű¿öµå |
| Deep foundation;Rock mass;Side friction;Transmission tower foundation;Uplift capacity; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.4, 2007³â, pp.149-160
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200718411577290)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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