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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.5, 2004³â, pp.17-25
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±¹³» ¿¬¾àÁö¹ÝÀÇ ½Å·Ú¼ºÀÖ´Â ºñ¹è¼ö Àü´Ü°µµ ÃßÁ¤À» À§ÇÑ flat DMT¿Í Àΰø½Å°æ¸Á ÀÌ·ÐÀÇ Àû¿ë
( Application of Flat DMT and ANN for Reliable Estimation of Undrained Shear Strength of Korean Soft Clay ) |
| º¯À§¿ë;±è¿µ»ó;À̽·¡;Á¤ÀºÅÃ; Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;±¹¸³¿©¼ö´ëÇб³ ÇØ¾ç½Ã½ºÅÛÇÐ;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇÐ;(ÁÖ)Çö´ë»ê¾÷°³¹ß Åä¸ñ¼³°èÆÀ;
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| DMT ½ÃÇèÀº ¿¬¾àÁö¹ÝÀÇ °øÇÐÀû Ư¼ºÀ» ÆÄ¾ÇÇϱâ À§ÇÑ ÇöÀå ½ÃÇè¹æ¹ýÀ¸·Î, ÀÌ ¹æ¹ýÀ¸·ÎºÎÅÍ ±¸ÇÑ ºñ¹è¼ö Àü´Ü°µµ´Â °¡Àå ½Å·Ú¼º ÀÖ°í À¯¿ëÇÑ ¸Å°³º¯¼ö·Î ¾Ë·ÁÁ® ÀÖ´Ù. ±×·¯³ª ±¹¿Ü ´Ù¸¥ Áö¿ªÀÇ ÀڷḦ Åä´ë·Î ±âÁ¸¿¡ Á¦¾ÈµÈ »ó°ü°ü°è½ÄµéÀº Áö¿ªÀûÀΠƯ¼º¿¡ ÀÇÁ¸ÇÑ´Ù. DMT ½ÃÇè °á°ú´Â 3°¡Áö Áß°£ Áö¼ö - Àç·áÁö¼ö, ¼öÆòÀÀ·ÂÁö¼ö, dilatometer modulus¸¦ »ç¿ëÇÏ¿© ÇØ¼®ÀÌ ÀÌ·ç¾îÁö¸ç ƯÈ÷ ºñ¹è¼ö Àü´Ü°µµ´Â ¼öÆòÀÀ·ÂÁö¼ö¸¸À» ÀÌ¿ëÇÏ¿© ¿¹ÃøÇϰí ÀÖ´Ù. º» ³í¹®¿¡¼´Â ¸ÕÀú DMT ½ÃÇèÀÇ ±¹³» ¿¬¾àÁö¹Ý¿¡¼ÀÇ Àû¿ë¼ºÀ» »ìÆìº¸¾ÒÀ¸¸ç DMT·ÎºÎÅÍ ºñ¹è¼ö Àü´Ü°µµ¸¦ ÃßÁ¤Çϱâ À§ÇÏ¿© $p_0, p_1, p_2, {sigma '}_v$ ±×¸®°í Ãʱ⠰£±Ø¼ö¾ÐÀ» ¹ÙÅÁÀ¸·Î Àΰø½Å°æ¸Á ¸ðµ¨À» °³¹ßÇÏ¿´´Ù. Àΰø½Å°æ¸Á ¸ðµ¨Àº ¿ÀÂ÷ ¿ªÀüÆÄ ¾Ë°í¸®ÁòÀ» Àû¿ëÇÏ¿´À¸¸ç ±¹³» ¿¬¾àÁö¹Ý¿¡¼ ¼öÇàµÈ DMT ½ÃÇè ÀڷḦ ÀÌ¿ëÇÏ¿© ÈÆ·ÃÇÏ¿´´Ù. Àΰø½Å°æ¸Á ¸ðµ¨ÀÇ Àû¿ë¼ºÀ» ÆÇ´ÜÇϱâ À§ÇÏ¿© ÈÆ·Ã¿¡ ÀÌ¿ëµÇÁö ¾ÊÀº ÀÚ·á·ÎºÎÅÍ ¿¹ÃøµÈ °á°ú¿Í ±âÁ¸¿¡ Á¦¾ÈµÈ »ó°ü°ü°è½ÄÀ¸·ÎºÎÅÍ ¾òÀº °á°ú¸¦ ¼·Î ºñ±³ÇÏ¿´´Ù. |
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| The flat dilatometer test (DMT) is a geotechnical tool to estimate in-situ properties of various types of ground materials. The undrained shear strength is known to be the most reliable and useful parameter obtained by DMT. However, the existing relationships which were established for other local deposits depend on the regional geotechnical characteristics. In addition, the flat dilatometer test results have been interpreted using three intermediate indices - material index $(I_D)$, horizontal stress index $(K_D)$, and dilatometer modulus (E$_{D}$) and the undrained shear strength has been estimated merely using the horizontal stress index $(K_D)$. In this paper, the applicability of the flat dilatometer to Korean soft clay deposit has been investigated. Then an artificial neural network was developed to evaluate the undrained shear strength by DMT and the ANN, based on the $p_0, p_1, p_2, {sigma '}_v$ and porewater pressure. The ANN which adopts the back-propagation algorithm was trained based on the DMT data obtained from Korean soft clay. To investigate the feasibility of ANN model, the prediction results obtained from data which were not used to train the ANN and those obtained from existing relationships were compared. |
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| Ű¿öµå |
| Artificial neural network(ANN);Flat dilatometer test(DMT);Soft clay;Undrained shear strength; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.5, 2004³â, pp.17-25
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922462043)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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