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Çѱ¹Áö¹Ý°øÇÐȸ / v.13, no.4, 1997³â, pp.135-148
Á¡¼ºÅä·Î µÚä¿òµÈ Á߷½Ŀ˺®¿¡¼­ÀÇ ÀÎÀå±Õ¿­ ¹× ¼öÆòÅä¾Ð : ºñ¹è¼ö ÇØ¼®
( Tension Crack and Lateral Pressure on Gravity Wall Backfilled by Cohesive Soil : Undrained Analysis )
Á¤¼º±³;±èÇü¼ö; Á¤È¸¿ø, µ¿¾Æ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Á¤È¸¿ø, µ¿¾Æ´ëÇб³ °Ç¼³±â¼ú¿¬±¸¼Ò Ưº°¿¬±¸¿ø, Á¤È¸¿ø, ºÎ»ê±¤¿ª½Ã Á¾ÇհǼ³º»ºÎ, Á¤È¸¿ø, ºÎ»êÀü¹®´ëÇÐ Åä¸ñ°ú;
 
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¿Ëº®¿¡ ÀÛ¿ëÇÏ´Â Åä¾ÐÀ» ±¸Çϱâ À§ÇÏ¿© CoulombÀÌ·ÐÀÌ ½Ç¹«¿¡ ´ëºÎºÐ »ç¿ëµÇ°í ÀÖÁö¸¸, Àü¼öÆòÅä¾ÐÀÇ ÀÛ¿ëÀ§Ä¡¸¦ ±¸ÇÒ ¼ö ¾øÀ¸¹Ç·Î Åä¾ÐºÐÆ÷¸¦ »ï°¢Çü ºÐÆ÷¶ó°í °¡Á¤Çϰí ÀÖ´Ù. ±×·¯³ª, ¼ö ¸¹Àº ½Ç³» ¹× ÇöÀå½ÇÇèÀ» ÅëÇÏ¿© Åä¾ÐºÐÆ÷°¡ ±×·¸Áö ¾Ê´Ù´Â °ÍÀ¸·Î ±Ô¸íµÇ¾ú´Ù. ÀÌ·¯ÇÑ ¹®Á¦¸¦ ±Øº¹Çϱâ À§ÇÑ ÀÌ·ÐÀûÀÎ Á¢±ÙÀÌ Handy(1985), Kingsley(1989), Kellogg(1993), Á¤¼º±³(1993, 1996a) µî¿¡ ÀÇÇÏ¿© ºñ Á¡¼ºÅä·Î µÚä¿òµÈ ¿Ëº®¿¡ ´ëÇÏ¿© ¼öÇàµÇ¾ú´Ù. Á¡¼ºÅä·Î µÚä¿òµÈ ¿Ëº®¿¡ ´ëÇÑ ±âÁ¸ÀÇ ÀÌ·ÐÀû Á¢±ÙÀº ´ÜÁö Rankine¶Ç´Â Coulomb À̷п¡ ±Ù°ÅÇÏ¿© ÁÖ·Î ¼öÇàµÇ¾úÁö¸¸, ±× À̷еéÀº Á¦°¢±â ´Ù¸¥ °á°ú¸¦ º¸¿©ÁÖ¾ú´Ù. ¿©±â¼­´Â Á¡¼ºÅä·Î µÚä¿òµÈ Á߷½Ŀ˺®¿¡ ÀÛ¿ëÇÏ´Â ¼öÆòÅä¾ÐÀ» À§ÇÑ ÀÌ·ÐÀû Á¢±ÙÀÌ ºñ¹è¼ö Á¶°ÇÇÏ¿¡¼­ ¼öÇàµÇ¾ú´Ù. ÀÌ Á¢±ÙÀº CoulombÀÇ °¡Á¤¿¡ ¹ÙÅÁÀ» µÎ°í ¾ÆÄª°³³äÀ»µµÀÔÇÏ¿´À¸¸ç, ÀÎÀå±Õ¿­À» ¹«½ÃÇÑ °æ¿ì¿Í °í·ÁÇÑ °æ¿ì¿¡ ´ëÇÏ¿© °¢°¢ À̷нÄÀÌ À¯µµµÇ¾ú´Ù. ±×¸®°í, ¸î°¡Áö Á¶°Ç¿¡ ´ëÇÑ ºñ±³°á°ú¿¡¼­ ÀÎÀå±Õ¿­À» °í·ÁÇÑ Åä¾ÐÀ̷нÄÀÇ Àû¿ëÀÌ ÇÕ¸®ÀûÀÏ °ÍÀ¸·Î »ç·áµÇ¾ú´Ù.
Coulomb's theory has been usually used in practice to obtain lateral earth pressure against retaining wall. Such theory is based in the assumption that the lateral pressure is a tai angular distribution, since the point of applying the lateral thrust cannot be obtained by using it. However, the results of laboratory and field tests showed that the lateral pressure was not a triangular but a nonlinear distribution. To overcome the drawback of the Coulomb's theory, the different theoretical approaches(Handy, 1985. Kingsley, 1989 : Kellogg, 1993, Chung et at,1993, 1996a) were performed for gravity wall backfilled by cohesionless soil. On the other hand, for retaining wall backfilled by ,cohesive soil, theoretical analyses were carried out only on the basis of the Rankine's or Coulomb's concepts, but the equations showed different results. Here was newly derived the equations of lateral pressures under undrained condition against gravity wall backfilled by cohesive soil. They were based on the Coulomb's wedge, adopted the arching concept. Some of the equations were derived by neglecting tension crack, while the others by considering it. Comparative results for applying different examples showed that the equation considering tension crack might be reasonable.
 
Ű¿öµå
Underained analysis;Flat arch;Earth pressure;Tension crack;Backfill of cohesive soil;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.13, no.4, 1997³â, pp.135-148
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920447549)
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