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Çѱ¹Áö¹Ý°øÇÐȸ / v.13, no.1, 1997³â, pp.169-182
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Ç¥ÁذüÀÔ½ÃÇèÀÇ µ¿ÀûÈ¿À² ÃøÁ¤
( Rod Energy Ratio Measurement of SPT ) |
| ÀÌÈ£Ãá;±èº´ÀÏ;¹Ú¿ë¿ø; ¸íÁöÀü¹®´ëÇÐ Åä¸ñ°ú;¸íÁö´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ¡¤È¯°æ°øÇаú, ¸íÁö´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ¡¤È¯°æ°øÇаú;;
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| Ç¥ÁذüÀÔ½ÃÇè¿¡¼ ÇØ¸Ó°¡ ³«ÇÏÇÏ¿© ¹ß»ýÇÑ Ãæ°Ý¿¡³ÊÁö°¡ »ùÇ÷¯¿¡ Àü´ÞµÇ´Â °úÁ¤¿¡ ¿©·¯ °¡Áö Á¦ÇÑ ¹× ¹®Á¦Á¡ ¶§¹®¿¡ ¿¡³ÊÁö ¼Õ½ÇÀÌ ÀϾ°Ô ¸¶·ÃÀÌ´Ù. ½ÃÇè°á°üÀÎ NÄ¡¸¦ º¸Á¤Çϱâ À§Çؼ´Â ·Îµå¿¡ Àü´ÞµÇ´Â ¿¡³ÊÁö ¼öÁØÀÌ ÃøÁ¤µÇ¾î¾ß ÇÑ´Ù.
ÀÌ ¿¬±¸¿¡¼´Â Ãæ°Ý¿¡³ÊÁö¿Í ¸ð·ç¸¦ ÅëÇÏ¿µ ·Îµå¿¡ Àü´ÞµÇ¸é¼ ¼Õ½ÇµÈ ¿¡³ÊÁö°¡ ¹Ý¿µµÈ ·Îµå ¿¡³ÊÁöÀÇ ºñÀ² Áï, Ç¥ÁذüÀÔ½ÃÇèÀÇ µ¿Àû È¿¿ïÀ» Charpy Ãæ°Ý½ÃÇèÀåÄ¡¸¦ ÀÌ¿ëÇÏ¿© ÃøÁ¤Çϰí, Çן ºÐ¼® ÇÁ·Î±×·¥ÀÎ GRL-WEAPÇØ¼®°ú ÇöÀå½ÃÇèÀ¸·Î ºñ±³ ¹× È®ÀÎ ÇÏ¿´´Ù.
¿¬±¸°á°ú R-PÇØ¸Ó¿Í ¹Ùµ¿ÇظÓÀÇ µ¿ÀûǥȿÀ²ÀÌ 0.726°ú 0.728·Î °¢°¢ »êÁ¤µÇ¾úÀ¸³ª 0.72·Î °°°Ô Á¦½ÃÇÏ¿´´Ù. ÀÌ °ª¿¡ ÇöÀåÃøÁ¤ÇÑ ÇØ¸Ó¿¡³ÊÁö ¼öÁØ 64.2%(R-P)¹× 75.%(ÀÚµ¿)¸¦ Àû¿ëÇÏ¿© ÃøÁ¤ N °¡Ä¡¸¦ º¸Á¤ÇÒ ¼ö ÀÖ´Â SPTÀÇ Æò±Õ¿¡³ÊÁöºñ¸¦ 46.7% ¹× 54.5%È£ »êÁ¤ÇÏ¿´´Ù. |
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| It is known that some amount of loss in impact energy takes place due to some limitations and problems during the performance of the field SPT. Actual energy level tractsferred to the rod should be measured to correct the SPT-N values tested in the field In this paper, the ratio of energy transferred to the rod through the anvil to impact energy is measured by using sharpy impact test equipment and also analysed by using GRL-WEAP This result is certified and compared with that of field SPT As the results of this study, the average rod energy ratio of the R-P hammer and the Trip hammer is calculated at 0.726 and 0.728 respectively, but it is suggested that 0.72 should be used. By using the hammer energy ratio 64.2% and 75.0% obtained from field measurement, the average energy ratio of the SPT for the R-P hammer is calculated at 46.7% and 54.5% for the Trip hammer. |
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| Ű¿öµå |
| Rod energy ratio;Average energy ratio;R-P Hammer;Trip hammer; |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.13, no.1, 1997³â, pp.169-182
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920447212)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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