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Çѱ¹Áö¹Ý°øÇÐȸ / v.12, no.4, 1996³â, pp.47-60
$C-phi$ ÈëÀ¸·Î µÚä¿òÇÑ Áß·Â½Ä ¿Ëº®¿¡ ÀÛ¿ëÇÏ´Â Á¤ÀûÅä¾Ð
( Lateral Earth Pressure against Gravity Walls Backfilled by $C-phi$ Soil )
Á¤¼º±³;Çã´ë¿µ;À̸¸·Ä; µ¿¾Æ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ºÎ»ê±¤¿ª½Ã µµ½Ã°èȹ°ú µµ½Ã°³¹ß°èÀå, µ¿¾Æ´ëÇб³ °ø´ëºÎ¼³ °Ç¼³±â¼ú¿¬±¸¼Ò Ưº°¿¬±¸¿ø;;
 
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°íÀü Åä¾ÐÀÌ·Ð Áß¿¡¼­ Coulomb ¹× RankineÅä¾ÐÀ̷нÄÀ» ½Ç¹«¿¡ ÁÖ·Î »ç¿ëµÇ°í Àִµ¥, ÀÌ µé¿¡ ÀÇÇÑ Åä¾ÐÀº »ï°¢Çü ºÐÆ÷·Î °£ÁÖÇϰí ÀÖ´Ù. ±×·¯³ª Terzaghi(1934), Tsagreli(1967), Fang & Ishibashi(1986) µî¿¡ ÀÇÇÑ ½ÇÇè°á°ú¿¡¼­ Åä¾ÐÀº »ï°¢Çü ºÐÆ÷°¡ ¾Æ´ÔÀÌ ¹àÇôÁ³´Ù. º» ¿¬±¸¿¡¼­´Â ÈëÀ¸·Î µÚä¿òµÈ ÁöÇ¥¸éÀÌ °æ»çÁö¸ç, °­¼º¿Ëº®ÀÇ µÞ¸éÀÌ °æ»çÁø ÀϹÝÀûÀÎ °æ¿ì¿¡ Àû¿ëÇÒ ¼ö ÀÖ´Â Åä¾ÐÀ̷нÄÀÌ ¾ÆÃë°³³äÀ» »ç¿ëÇÏ¿© »õ·ÎÀÌ Á¦¾ÈµÇ¾ú´Ù. »õ·ÎÀÌ Á¦¾ÈµÈ À̷нĿ¡ ÀÇÇÑ °è»ê°á°ú´Â ±âÁ¸ À̷е鿡 ÀÇÇÑ °Íµé°ú ºñ±³µÇ¾úÀ¸¸ç, ÀÌ À̷нĿ¡ ÀÇÇÏ¿© Åä¾Ð¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ¿ä¼ÒµéÀ» ºÐ¼®ÇÏ¿´´Ù. ºñ±³ ¹× ºÐ¼®°á°ú¸¦ º¸¸é, ÀüÁÖµ¿Åä¾ÐÀº »õ·ÎÀÌ Á¦¾ÈµÈ À̷нĿ¡ ÀÇÇÑ °ªÀÌ ±âÁ¸À̷п¡ ÀÇÇÑ °ªµé°ú Àß ÀÏÄ¡ÇÏ¿´´Ù. ±×·¯³ª RankineÀ̷п¡ ÀÇÇÑ ÀüÅä¾Ð Àº ºñ±³µÈ ±âŸ À̷е鿡 ÀÇÇÑ °ª°ú »óÀÌÇÏ¿´´Ù. ±×¸®°í ÀÛ¿ëÁ¡ À§Ä¡(h)´Â »ï°¢Çü ºÐÆ÷ÀÇ Á᫐ À§Ä¡ÀÎ 0.33ÀÌ ¾Æ´Ï¶ó ¿Ëº® µÞ¸éÀÇ °æ»ç°¢,µÚä¿ò Áö¸éÀÇ °æ»ç°¢, ÈëÀÇ ³»ºÎ¸¶Âû°¢ ¹× ºÎÂø·Â¿¡ ÀÇÇÏ¿© ÁÖ·Î Áö¹èµÇ¾ú´Ù.
Of the classical theories on lateral earth pressure, the Coulomb's and the Rankine's theories, which have been usually used in practice for design of retaining walls, assumed that the lateral earth pressure was a triangular distribution. However, the experimental results obtained by Terzaghi(1934), Tsagreli(1967), Fang & Ishibashi(1986), etc showed that lateral pressure were not triangular distribution. ' In this study, for rigid walls with inclined backfaces and inclined surfaces backfilled by $C-phi$ soils, an analytical method of earth pressure distribution has been newly suggested by using the concept of the flat arch. The results calculated by the newly suggested equations were compared with ones by the existed theories. And'the influence factors of the earth pressures by the suggested equations were investigated. As a result, the thrusts obtained by this method agree well with those by the existing theories, except the Rankine's solution. It was showed that the height to the centre of pressure(h) depends mainly upon the inclinations of the backface and the backfilled surface, the angle of internal friction, and the adhesion between the wall and the backfilled soil, instead of 0.33H, where H is the wall height.
 
Ű¿öµå
Flat arch;Analytical solution;Backfill of $C-phi$ soil;Earth pressure;Influence factor;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.12, no.4, 1996³â, pp.47-60
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920446663)
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