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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.6, 1999³â, pp.143-154
Á¤Àû ÀιßÇÏÁßÀ» ¹Þ´Â ¾Ï¹Ý ¾ÞÄ¿ÀÇ °Åµ¿;ÅÙ´ø-±×¶ó¿ìÆ® °æ°è¸éÀÇ Àü´ÜÀÀ·Â ºÐÆ÷
( Rock Anchors Subjected to Static Uplift Loads ; Shear Stress Distribution of Tendon-Grout Interface )
ÀÓ°æÇÊ;Á¶³²ÁØ;Ȳ¼ºÀÏ; ±¹¹Î´ëÇб³ ´ëÇпø Åä¸ñȯ°æ°øÇкÎ;±¹¹Î´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇкÎ;±¹¹Î´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇкÎ;
 
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º» ¿¬±¸¿¡¼­´Â ¾Ï¹Ý ¾ÞÄ¿ÀÇ ÅÙ´ø-±×¶ó¿ìÆ® °æ°è¸éÀÇ ÇÏÁßÀü´Þ±â±¸(load transfer mechanism)¸¦ ±Ô¸íÇϱâ À§ÇÏ¿© ¾ÏÁúÀÌ °­ÇÑ ÀÚ¿¬ È­°­¾Ï°ú ÄÜÅ©¸®Æ®·Î Á¦ÀÛµÈ ¸ðÇü ¾Ï¹Ý¿¡ ½Ã°øµÈ ¸ðÇü ¾Ï¹Ý ¾ÞÄ¿¿¡ ´ëÇÑ Á¤Àû ÀιßÇè(static uplift test)À» ¼öÇàÇÏ¿´´Ù. ºÒ¿¬¼Ó¸éÀÌ ÅÙ´ø-±×¶ó¿ìÆ®ÀÇ Àü´ÜÀÀ·Â ºÐÆ÷¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¹àÈ÷±â À§ÇÏ¿© ¼öÆòÇÑ Àý¸®¸éÀ» °®°í ÀÖ´Â ¸ðÇü¾Ï¹Ýµµ Á¦À۵Ǿú´Ù. ½ÇÇè °á°ú ºÒ¿¬¼Ó¸éÀÌ ¾ø´Â ¾Ï¹Ý¿¡ ½Ã°øµÈ ¾Ï¹Ý ¾ÞÄ¿ÀÇ °æ¿ì ¾ÞÄ¿ »ó´Ü¿¡ ½ÉÇÑ ÀÀ·Â ÁýÁßÀÌ ¹ß»ýÇÔÀ» ¾Ë ¼ö ÀÖ¾ú°í ºÒ¿¬¼Ó¸éÀÌ Áõ°¡ÇÒ¼ö·Ï ±íÀÌ¿¡ µû¶ó ±ÕÀÏÇÑ Àü´ÜÀÀ·Â ºÐÆ÷¸¦ ³ªÅ¸³Â´Ù. ¶ÇÇÑ, ½ÇÇè°á°ú¿¡ ´ëÇÑ È¸±ÍºÐ¼®À» ÅëÇÏ¿© ÅÙ´ø-±×¶ó¿ìÆ® °æ°è¸éÀÇ Àü´ÜÀÀ·Â ºÐÆ÷¿¡ °üÇÑ °æÇè½ÄÀ» »êÁ¤ÇÏ¿´À¸¸ç, ½ÇÇè¿¡ ÀÇÇÑ Àü´ÜÀÀ·Â ºÐÆ÷´Â ÅÙ´ø Á÷°æÀÇ 2~3¹è ±íÀÌ¿¡¼­´Â À̷п¡ ÀÇÇÑ Àü´ÜÀÀ·Â ºÐÆ÷ º¸´Ù ÀÛ°Ô ³ªÅ¸³ª°í ±× ÀÌÇÏ¿¡¼­´Â ¹Ý´ë Çö»óÀ» °üÂûÇÒ ¼ö ÀÖ¾ú´Ù.
In this study, the load transfer mechanism of tendon-grout interface of rock anchors has been examined through a series of static pull-out tests conducted on the model rock anchors constructed in the natural and artificial rock masses of granite and concrete, respectively. Several rock masses with horizontal discontinuities have been prepared to study the effects of weak planes on the shear stress distribution in tendon-grout interface. As a result, for the rock anchors constructed in the rock mass without discontinuities, stress concentration occurs on the upper part of the tendon-grout interface. On the contrary, as the frequency or the number of discontinuities increases, the shear stress distribution along the depth tends to be uniform. Also, an experimental equation about shear stress distribution between tendon-grout interface can be made by the regression of test results. The shear stresses computed from the experimental results between the rock surface and the depth of 2~3 times the tendon diameter are smaller than those from theory. Below the depth, the reverse can be observed.
 
Ű¿öµå
Rock anchor;Tendon-grout interface;Load transfer mechanism;Shear stress distribution;Discontinuities;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.6, 1999³â, pp.143-154
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921749830)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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