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Çѱ¹Áö¹Ý°øÇÐȸ / v.2, no.1, 1986³â, pp.27-44
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( A Reliability Analysis of Shallow Foundations using a Single-Mode Performance Function ) |
| ±è¿ëÇÊ;ÀÓº´Á¶; Á¤È¸¿ø, ¿ï»ê´ëº´¼³ °ø¾÷Àü¹®´ëÇÐ;Á¤È¸¿ø, °í·Á´ëÇб³;
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| ±âÃÊ ±¸Á¶¹° ¼³°è¿¡ ÀÖ¾î¼ ÁöÁö·Â ¹× ¾Ð¹Ð ħÇÏ·® »êÁ¤½ÄÀ» °¢°¢ ´ÜÀÏ ¸ð¿ìµå °Åµ¿ÇÔ¼ö(perfor trance function)·Î ¼³Á¤ÇÏ¿© ½ÇÃøµÈ Å伺ÀÚÃʸ¦ È®·üº¯¼ö·Î ÃëÇØ¼ ±â¼ú·ù°èÇÐÀû ºÐ¼®À» ±âÇàÇß´Ù. ÀÌ ºÐ¼®°á°ú·Î¼ ¾èÀº ±âÃʰ¡ ÆÄ±«»óÅ¿¡ À̸£·¶À» ¶§ÀÇ ½Å·Úµµ¿Í ±× ¶§¿¡ °Åµ¿µÇ°í ÀÖ´Â ¼³°èº¯¼öÄ¡(check points)¸¦ "Advanced first-order second moment method"·Î ±¸Çß´Ù. ¼³°èº¯¼öµé »çÀÌÀÇ °ü°è¸¦ ¹«¿¬°ü-Á¤±ÔºÐÆ÷, ¹«»ó°ü-ºñÁ¤±ÔºÐÆ÷, À¯»ó°ü-Á¤±ÔºÐÆ÷ ¹× À¯»ó°ü-ºñÁ¤±ÔºÐÆ÷ µîÀÇ À¯Çü À¸·Î ºÐ·ùÇÏ¿© ½Å·Úµµ ¹× ¼³°èº¯¼öÄ¡¸¦ ºñ±³ °ËÅäÇÏ¿© ¾òÀº ÁÖ¿äÇÑ °á·ÐÀº ´ÙÀ½°ú °°´Ù. 1. ÁöÁö·Â ¸ð¿ìµå 1) CU test ÀÇÇÑ Á¡Âø·Â°ú tans»çÀÌ¿¡´Â ¾àÇÑ À½»ó°üÄ¡ ÀÖÀ¸¸ç, °¢°¢ ´ë±ÔºÐÆ÷ ¹× ´ë¼öÁ¤·û ºÐÆ÷¸¦ ÇÑ´Ù. 2) ½Å·ÚÁö¼ö¸¦ 2.34·Î Á¦ÇÑÇßÀ» °æ¿ì, À¯»ó°ü-´ë¼öÁ¤±ÔºÐÆ÷ À¯ÇüÀÇ ÁöÁö·ÂÀº 18.6t/m2À¸·Î¼ °¡Àå ³·°Ô µÇ¹Ç·Î, ÀÌ ÀÌ¿ÜÀÇ À¯ÇüÀº Áö¹ÝÁ¶°ÇÀ» °ú´ëÆò°¡ÇÒ ¿ì·Á°¡ ÀÖ´Ù. 2. ¾Ð¹Ð ħÇÏ·® ¸ð¿ìµå 1) ¾ÐÃàºñ(compression ratio) ¹× ¼±Çà ¾Ð¹ÐÀÀ·ÂÀº °¢°¢ Á¤±ÔºÐÆ÷ ¹× ´ë¼öÁ¤±ÔºÐÆ÷¸¦ ÀÌ·ç¸ç, À̵éÀÇ »ó°ü¼ºÀº ¿¬°èÀû µ¶¸³º¯¼ö·Î Ãë±ÞÇØµµ ÁÁÀ» ¸¸Å ¸Å¿ì ³·´Ù. 2) ¾Ð¹Ð ħÇÏ·®À» È®Á¤·ÐÀû ¹æ¹ýÀ¸·Î »êÃâÇÑ 16cmº¸´Ù ´õ ³·°Ô ÃëÇϸé, À¯»ó°üÀÏ´ë¼öÁ¤±ÔºÐÆ÷·ù ÇüÀÇ ½Å³ú¸Æ°¡ °¡Àå ³·°Ô Æò°¡µÈ´Ù. µû¶ó¼, ¾èÀº ±âÃÊ ±¸Á¶¹°À» ½Å³úµµ³ª ÆÄ±«È®·üÀ» ÇØ¼®ÇÏ´Â µ¥ ÀÖ¾î¼, Á¤È®ÇÑ È®·ü¹ÐµµÇÔ¼ö·Î¼ º¹ÀâÇÑ ¼öÄ¡ÀûºÐ¿¡ ÀÇÇÑ ¾ö¹ÐÇØº¸´Ù´Â °³·«ÀûÀÎ È®·üºÐÆ÷ÇüÅÂ¿Í ºñ±³Àû ½±°Ô ¾ò¾îÁö´Â °øºÐ»ê±îÁö¸¦ °í·ÁÇϸé, ±âÃÊÀÇ Áö¹ÝÁ¶°ÇÀÌ °ú¼ÒÆò°¡µÉ ¿ì·Á°¡ ¾ø´Ù.°¡µÉ ¿ì·Á°¡ ¾ø´Ù.ÀÇ »Í¹ç¿¡ ¹ß»ýÇÑ ¹ß¾ÆºÒ·®Çö»óÀÇ ¿øÀÎÀº ÁÖÀÎÀÌ Àú¿Â¿¡ ÀÇÇÑ µ¿Çضó°í º¼ ¼ö ÀÖÀ¸¸ç Áö¿ªÀûÀ¸·Î´Â ºØ¼Ò°áÇÌ¿¡ ÀÇÇÑ ¹ß¾ÆºÒ·®Çö»óµµ ÀûÁö ¾Ê¾Ò°í ƯÈ÷ ºØ¼Ò°áÇÌÀÌ µ¿ÇØÇÇÇØ¸¦ °¡¼ÓȽÃÄ×´Ù°í º¼ ¼ö ÀÖ´Ù.dard deviation)were estimated, and diagram which shows the relationship between mean annual maximum rainfall($$) and frequency factor for each durations were drawn. PMP was estimated by statistical method using the PMP frequency factor obtained from the diagram and statistics($$, Sn). The PMP-Duration Equation was derived from the envelope curve in order to obtain the PMP for an arbitrary duration. The isohyetal map of 24 hours PMP and PMP. DAD curve for the whole of Korea were drawn in accordance with the point PMP values.el size´Â °ÅÀÇ Â÷À̰¡ ¾ø¾ú´Âµ¥, ƯÈ÷ ¼ö´ç¿µÈ¼ö ¹× sink¿ë·®¿¡ ´ëÇÑ ÁÖ¿¬È¿°úÁ¤µµ´Â °èÅë¿¡ µû¶ó »ó´çÇÑ Â÷À̸¦ º¸¿´´Ù. °èÅëÀÇ ÀÚü°æÀïÁ¤µµ´Â Ãâ¼öÈĺ¸´Ù´Â Ãâ¼öÀü »ý½Ä»ýÀå±â°£¿¡ ´õ¿í ½ÉÇÏ°í °èÅë°£Â÷À̵µ Å« °Í °°¾Ò´Ù. ÀϹÝÀûÀ¸·Î ¼ö´çsink¿ë·®ÀÌ Å¬¼ö·Ï Ãâ¼öÀü ÀÚü°æÀïÁ¤µµ°¡ ½ÉÇÑ °æÇâÀ̾úÀ¸³ª °èÅë¿¡ µû¶ó¼´Â ¼ö´ç sink¿ë·®ÀÌ ÀÛÀ¸¸é¼ ÀÚü°æÀïµµ°¡ ½ÉÇÑ °Í(¼ö¿ø264È£ µî)ÀÌ |
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| The measured soil data are analyzed to the descriptive statistics and classified into the four models of uncorrelated-normal (UNNO), uncorrelated-nonnormal (VNNN), correlatedonnormal(CONN), and correlated-nonnormal(CONN) . This paper presents the comparisons of reliability index and check points using the advanced first-order second-moment method with respect to the four models as well as BASIC Program. A sin91e-mode Performance function is consisted of the basic design variables of bearing capacity and settlements on shallow foundations and input the above analyzed soil informations. The main conclusions obtained in this study are summarized as follows: 1. In the bearing capacity mode, cohesion and bearing-capacity factors by C-U test are accepted for normal and lognormal distribution, respectively, and negatively low correlated to each other. Since the reliability index of the CONN model is the lowest one of the four model, which could be recommended a reliability.based design, whereas the other model might overestimate the geotechnical conditions. 2. In the case of settlements mode, the virgin compression ratio and preccnsolidation pressure are fitted for normal and lognormal distribution, respectively. Constraining settlements to the lower ones computed by deterministic method, The CONN model is the lowest reliability of the four models. |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.2, no.1, 1986³â, pp.27-44
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198611920442594)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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