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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.8, 2007³â, pp.107-116
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dzȾϿ¡ ±ÙÀÔµÈ ÇöÀ埼³¸»¶ÒÀÇ ÀúÇ×°è¼ö »êÁ¤
( Resistance Factors for Drilled Shafts Embedded in Weathered Rock ) |
| À±È«ÁØ;Á¤¼ºÁØ;±è¸í¸ð; Çѱ¹µµ·Î°ø»ç;¼¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;¼¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;
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| ÇÏÁßÀúÇ×°è¼ö¼³°è¹ý(LRFD)Àº ¼¼°èÀûÀ¸·Î Áö¹Ý°øÇÐÀû ¼³°èÀÇ ½Ç¹«¿¡¼ »ç¿ëÀÌ Áõ°¡Çϰí ÀÖÀ¸¸ç ¸ÓÁö¾Ê¾Æ ÇöÀçÀÇ Çã¿ëÀÀ·Â¼³°è¹ý(ASD)À» ¿ÏÀüÈ÷ ´ëüÇÒ °ÍÀ¸·Î ¿¹»óµÈ´Ù. ÇÏÁßÀúÇ×°è¼ö¼³°è¹ýÀº ½Å·ÚµµÇؼ®(Reliability analysis)À» ¹ÙÅÁÀ¸·Î ÆÄ±«È®·üÀ» Á¤·®ÈÇÏ¿© »óºÎ±¸Á¶¹°°ú ÇϺα¸Á¶¹°À» ÀϰüµÈ ½Å·Úµµ ¼öÁØÀ¸·Î ¼³°èÇÒ ¼ö ÀÖ°Ô ÇÏ´Â ÀåÁ¡À» °¡Áö°í ÀÖ´Ù. ÇöÀç ¾Ï¹Ý¿¡ ±ÙÀÔµÈ ÇöÀ埼³¸»¶ÒÀÇ ÀúÇ×°è¼ö´Â ´ÜÁö ¹«°á¾Ï »óÅÂÀÏ °æ¿ì¿¡ ´ëÇÏ¿© AASHTO¿¡ ÀÇÇØ Á¦½ÃµÇ¾î ÀÖ´Ù. ±×·¯³ª ±¹³»ÀÇ °æ¿ì, ¸»¶ÒÀÌ ±ÙÀԵǴ ´ëºÎºÐÀÇ ±â¹Ý¾ÏÀº ½ÉÇÏ°Ô Ç³ÈµÇ¾î ÀÖ´Ù. µû¶ó¼ º» ¿¬±¸¿¡¼´Â dzȾÏ(ÈçÈ÷ IGM)¿¡ ´ëÇÑ ÀúÇ×°è¼ö¸¦ »êÁ¤ÇϰíÀÚ ÇÏ¿´´Ù. À̸¦ À§ÇØ ±¹³» dzȾϿ¡ ±ÙÀÔµÈ ÇöÀ埼³¸»¶ÒÀÇ ÀúÇ×°è¼ö¸¦ »êÁ¤Çϱâ À§ÇÏ¿© ½Å·Úµµ ÇØ¼®À» ¼öÇàÇÏ¿´´Ù. 4°³ ÇöÀå¿¡¼ ¼öÇàµÈ 21º»ÀÇ ÀçÇϽÃÇèÀÚ·á°¡ ºÐ¼®¿¡ »ç¿ëµÇ¾úÀ¸¸ç, ¸»¶ÒÁöÁö·ÂÀ» °è»êÇÏ´Â ¹æ¹ý¿¡ µû¶ó ÀúÇ×°è¼ö´Â $0.1{sim}0.6$ÀÇ ¹üÀ§ ³»¿¡¼ »êÁ¤µÇ¾ú´Ù. |
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| Load and Resistance Factor Design (LRFD) method is being used increasingly in geotechnical design practice worldwide, and is expected to completely replace the current Allowable Stress Design (ASD) method in the near future. LRFD has advantages over ASD in that it allows the design of superstructures and substructures at a consistent reliable level by quantification of failure probability based on reliability analysis. At present, resistance factors for cast-in-place piles embedded in rocks are determined by AASHTO only for the intact rock conditions. In Korea, however, most of the bedrocks in which piles are embedded are heavily weathered. Thus, this study will try to determine the resistance factors of heavily weathered rocks (so-called intermediate goo-materials). To this aim, reliability analysis was carried out to evaluate the resistance factors of cast-in-place piles embedded in intermediate geo-materials in Korea. Pile load test data of 21 cast-in-place piles of 4 construction sites were used for the analysis. Depending on the method which calculates the pile capacities, the resulting resistance factors ranged between 0.1 and 0.6. |
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| Ű¿öµå |
| Code calibration;Load and resistance factor design;Reliability analysis;Rock socketed pile; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.8, 2007³â, pp.107-116
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200734516348806)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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