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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.95-104
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SPT ¸ðÇü ·Ôµå¿¡¼ ÀÀ·ÂÆÄÀÇ ÀüÆÄ Ư¼º¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸
( An Experimental Study about the Properties of Stress Wave in SPT Model Rod ) |
| ±Ç±âö;¼¿ø¼®;±è¹ü»ó;±èµ¿¼ö;À̺´½Ä; µ¿ÀÇ´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;SK °Ç¼³¿¬±¸¼Ò;Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;°øÁÖ´ëÇб³ Åä¸ñ°øÇаú;
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| ÃÖ±Ù, SPT ·Ôµå¿¡¼ ÃøÁ¤µÇ´Â µ¿Àû½ÅÈ£(Èû ¹× °¡¼Óµµ½ÅÈ£)¿¡ ´ëÇÑ ÀÌ·ÐÀû. ÇØ¼®Àû ¿¬±¸°¡ Ȱ¹ßÈ÷ ÁøÇàµÇ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â SPT½ÃÇè¿¡¼ ·Ôµå(rod)¸¦ ÅëÇØ ÀüÆÄµÇ´Â ź¼ºÆÄ¿¡ ´ëÇÑ µ¿Àû½ÅÈ£(Èû ½ÅÈ£)ÀÇ Æ¯¼ºÀ» ¸ðÇü ·Ôµå-Áö¹Ý ½Ã½ºÅÛ¿¡ ´ëÇÏ¿© ½ÇÇèÀûÀ¸·Î °ËÅäÇÏ¿´´Ù. ½ÃÇè°á°ú, ´ÜºÎÁ¶°Ç¿¡ µû¸¥ ÀÔ»çÆÄ¿Í ¹Ý»çÆÄÀÇ Å©±â´Â ÀÌ·ÐÀûÀ¸·Î ¾Ë·ÁÁø °Í°ú ¸Å¿ì Àß ÀÏÄ¡Çϰí ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù. µû¶ó¼, ¸¸ÀÏ SPT ½ÃÇè¿¡¼ ÃøÁ¤µÈ ÇÏÁß½ÅÈ£¿¡¼ ÀÔ»çÆÄ¿Í ¹Ý»çÆÄÀÇ Æ¯¼ºÀÌ Á¤·®ÀûÀ¸·Î Æò°¡µÈ´Ù¸é, Áö¹ÝÀÇ ÀÓÇÇ´ø½º¸¦ °áÁ¤ÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ¿¹»óµÈ´Ù. ÇÑÆí, ÁÖ¸éÀúÇ׿¡ ÀÇÇÑ ¹Ý»çÆÄÀÇ ¿µÇâÀº ´ë´ÜÈ÷ ÀÛÀº °ÍÀ¸·Î ³ªÅ¸³ª, SPT µ¿ÀûÇÏÁßÀÇ ÇØ¼®¿¡¼´Â »ùÇ÷¯ ÁÖ¸éÀÇ ¸¶ÂûÀúÇ×Àº ¹«½ÃÇϰí, »ùÇ÷¯ ¼±´ÜÀÇ ´ÜºÎÀúÇ׸¸À» °í·ÁÇÏ´Â ÇØ¼®¸ðµ¨ÀÇ Àû¿ëÀÌ °¡´ÉÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| The theoretical and analytical studies on dynamic signals(force and acceleration signals) measured at SPT rod are actively made. In this paper, the characteristics of stress wave(force signals) in SPT rod were studied experimentally using model rod system. It was noted that the amplitude ratios of reflected wave over incident wave in different end conditions were well matched with theoretical results. The impedance of soil could be determined if the characteristics of incident and reflected waves could be evaluated quantitatively in situ SPT test. On the other hand, the results of model tests showed that the effect of reflected wave caused by side friction was negligible, and therefore, the analysis model considering only end resistance of sampler could be applicable in dynamic analysis of SPT. |
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| End conditions;Impedance;Rod-ground system;SPT;Stress wave; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.95-104
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921341972)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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