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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.65-73
Â÷·®ÇÏÁßÀ» ¹Þ´Â ÁöÁß¿¬¼º°üÀÇ °Åµ¿Æ¯¼º
( Behavior of Underground Flexible Pipes Subject to Vehicle Load )
ÀÌ´ë¼ö;»óÇö±Ô;±è°æ¿­; ÇÑÀü Àü·Â¿¬±¸¿ø;ÇÑÀü Àü·Â¿¬±¸¿ø;ÇÑÀü Àü·Â¿¬±¸¿ø;
 
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º» ¿¬±¸¿¡¼­´Â ÁöÁß¹èÀü¼±·Î¸¦ °Ç¼³ÇÔ¿¡ ÀÖ¾î Àü·ÂÄÉÀ̺í¿ë º¸È£°üÀ¸·Î »ç¿ëµÇ°í ÀÖ´Â PEÆÄÇü°üÀÇ ¸Å¼³±íÀ̺° ÀÛ¿ë¾Ð·Â-º¯Çü·ü Ư¼ºÀ» ºÐ¼®Çϱâ À§ÇØ Àü»êÇØ¼® ¹× ½Ç³» ¸ðÇüÅäÁ¶½ÇÇèÀ» ¼öÇàÇÏ¿´À¸¸ç, ´õºÒ¾î °íÀüÀ̷п¡ ÀÇÇÑ ÇØ¼®°ú ºñ±³ ºÐ¼®ÇÏ¿© ÁöÁß¿¬¼º°üÀÌ ¾î´À ¸Å¼³±íÀÌ¿¡¼­ ¾ÈÀüÇÏ°í ±× ¶§ÀÇ °Åµ¿Æ¯¼ºÀÌ ¾î¶² ¾ç»óÀ» º¸ÀÌ´ÂÁö ±Ô¸íÇÏ¿´´Ù. ½Ç³» ¸ðÇüÅäÁ¶½ÇÇè¿¡ »ç¿ëµÈ ÅäÁ¶´Â ÇöÀåÁ¶°ÇÀ» Á¤È®È÷ ¸ð»çÇϱâ À§ÇØ ´ë±Ô¸ð·Î Á¦ÀÛ(350$ imes$220$ imes$300cm)ÇÏ¿´À¸¸ç, ÅäÁ¶ÀÇ Å©±â´Â Àü»êÇØ¼®°ªÀ» ÀÌ¿ëÇÏ¿© º®Ã¼¿¡ ÀÇÇÑ ÀÀ·ÂÀÇ ¹Ý¹ßÀÌ ¾øµµ·Ï Ä¡¼ö¸¦ °áÁ¤ÇÏ¿´´Ù. °¡¾ÐÀåÄ¡·Î´Â ÃÖ´ë 25ton±îÁö ¾Ð·ÂÀ» °¡ÇÒ ¼ö ÀÖ´Â Actuator½Ã½ºÅÛÀ» ÀÌ¿ëÇÏ¿´´Ù. °¢ ÇØ¼®¹æ¹ý¿¡ Àû¿ëµÈ ¸Å¼³ÇüÅ´ A-1±Þ µµ·ÎÆ÷Àå ¾Æ·¡ ¿¡ PEÆÄÇü°üÀÌ ¹¯È÷°í, ÀÓ°èÇÏÁßÀ¸·Î DB-24Â÷·®ÀÌ ¸Å¼³°ü »ó´Ü Áß¾Ó¿¡ Á¤Â÷ÇßÀ» ¶§ °üÀÌ ¹Þ´Â ÀÛ¿ë¾Ð·Â-º¯Çü·ü Ư¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ÇØ¼®°á°ú, KS-C8455¿¡ ¸í½ÃµÇ¾î ÀÖ´Â ÁöÁß¿¬¼º°üÀÇ Çã¿ëº¯Çü·ü ±âÁØÀÎ 3.5%¿¡ ¸¸Á·ÇÏ´Â ¸Å¼³±íÀÌ´Â ¾à 40cm ÀÌ»óÀÎ °ÍÀ¸·Î ÆÇ¸íµÇ¾ú°í, ½Ç³» ¸ðÇüÅäÁ¶½ÇÇè °á°ú°ª¿¡ ´ëÇÑ È¸±ÍºÐ¼®À» ÅëÇØ ¿ì¸®³ª¶ó ÁöÁß¹èÀü¼±·ÎÀÇ ÇöÀåÁ¶°Ç¿¡ Àß Àû¿ëµÉ ¼ö ÀÖ´Â ÁöÁß¿¬¼º°üÀÇ ¸Å¼³±íÀÌ¿¡ µû¸¥ º¯Çü·ü »ó°ü°ø½ÄÀ» Á¦¾ÈÇÏ¿´´Ù.
Underground flexible pipes for electric cables are subject to external loads and surrounding soil pressure. Particularly, strain of flexible pipes is of great concern in terms of safety and maintenance for electric cables. In this paper, stress and strain of flexible pipes with various depth are compared using traditional formula, FEM analysis and model soil box test. The results show that theoretical values are more conservative in strain in comparison with model soil box test and FEM analysis. Considering the strain criteria - maximum 3.5%, flexible pipes can be buried at the depth of 40cm without additional soil improvement. From the result of this study, deformation formula compatible with the field condition was proposed.
 
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Numerical analysis;Soil box test;Stress-strain diagram;Underground flexible pipe;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.65-73
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921341941)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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