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Çѱ¹µµ·ÎÇÐȸ / v.2, no.1, 2000³â, pp.135-145
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¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷À屸Á¶Ã¼ÀÇ ³»ºÎóÁü¿¡ ÀÇÇÑ ¹°¼ºÃßÁ¤°ú ÁÖÇà¼Óµµ¿¡ µû¸¥ °Åµ¿ºÐ¼®
( Evaluation of Flexible Pavement Layer Moduli Using the Depth Deflectometer and Flexible Pavement Behavior under Various Vehicle Speeds ) |
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| ÃÖ±Ù Æ÷Àåµµ·ÎÀÇ ¿ªÇÐÀû »óŸ¦ Æò°¡ÇÏ´Â ¹æ¹ýÀ¸·Î ºñÆÄ±« ½ÃÇèÀÎ FWD(Falling Weight Deflectometer)¿Í ź¼ºÆÄ½ÃÇèÀÌ ¸¹ÀÌ ÀÌ¿ëµÇ°í ÀÖ´Ù. ±×·¯³ª ±âÁ¸ÀÇ ¹æ¹ýµéÀº °ø¿ëÁßÀÎ µµ·Î¿¡¼ Â÷·®À» ÅëÁ¦½ÃŲ ÈÄ ½ÃÇèÀ» ½Ç½ÃÇØ¾ß ÇÏ´Â Á¦ÇÑÀÌ ÀÖ´Ù. ±×·¯¹Ç·Î ½ÇÁ¦ ÁÖÇàÇÏÁß Åë°ú½Ã ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷À屸Á¶Ã¼ÀÇ ¹°¼ºÀ» ÃßÁ¤ÇÏ¿© ÀÜÁ¸¼ö¸í ¿¹Ãø ¹× À̵¿ÇÏÁß¿¡ ´ëÇÑ Æ÷Àåü °Åµ¿À» ºÐ¼®ÇÏ´Â °æ¿ì¿¡´Â FWD¿Í °°ÀÌ Ç¥¸éóÁüÀ¸·ÎºÎÅÍ ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷À屸Á¶Ã¼ °¢ ÃþÀÇ ¹°¼ºÀ» ÃßÁ¤ÇÏ´Â ¹æ¹ýÀÇ »ç¿ëÀÌ °ï¶õÇÏ´Ù. ÀÌ·± °æ¿ì¿¡ MDD (Multi-Depth Deflectometer)¸¦ ÅëÇØ ¾ò¾îÁø ±íÀ̺° óÁüÀ» »ç¿ëÇÏ¿© ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷À屸Á¶Ã¼ °¢ ÃþÀÇ ¹°¼ºÀ» ¿ª»ê ÃßÁ¤ÇϰíÀÚ º» ¿¬±¸¿¡¼´Â ´ÙÃþ ź¼ºÀÌ·ÐÀÇ ¹Ýº¹ÀûÀÎ ¿ª»ê°ú Ãæ°ÝÇÏÁßÀÇ ¿µÇâÀ» °í·ÁÇÏ¿© ±íÀ̺° óÁüÀ¸·ÎºÎÅÍ ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷À屸Á¶Ã¼ °¢ÃþÀÇ ¹°¼ºÀ» ÃßÁ¤ÇÒ ¼ö ÀÖ´Â ¿ª»ê¹Ýº¹±â¹ýÀ» °³¹ßÇÑ ÈÄ À̸¦ ¼öÄ¡°ËÁõÇÏ¿´´Ù. ¼öÄ¡¸ðµ¨À» ÅëÇÏ¿© °ËÁõÇÑ °á°ú, ¿ª»êÃßÁ¤µÈ ź¼º°è¼ö¿Í ½ÇÁ¦Åº¼º°è¼ö »çÀÌÀÇ ¿ÀÂ÷´Â ÃÖ´ë 0.114%·Î ½Å·Ú¼º ÀÖ´Â °á°ú¸¦ ¾ò¾ú´Ù. ¶ÇÇÑ º» ¿¬±¸¿¡¼´Â ÁÖÇàÇÏÁßÀÇ ¼Óµµ¿¡ µû¸¥ ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷À屸Á¶Ã¼ÀÇ µ¿ÀûƯ¼ºÀ» ÆÄ¾ÇÇÏ¿© ½ÇÁ¦ÀûÀÎ Æ÷À屸Á¶Ã¼ÀÇ °Åµ¿À» ºÐ¼®ÇϰíÀÚ ¼öµµ±Ç ¿Ü°û ¼øÈ¯°í¼Óµµ·Î ±èÆ÷±¸°£¿¡¼ ½ÇÁ¦ Æ®·°ÁÖÇàÀ» ÅëÇÑ ÇöÀå½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ÁÖÇàÇÏÁß¿¡ ´ëÇÑ ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷À屸Á¶Ã¼ÀÇ °Åµ¿À» ±íÀ̺° óÁü ÃøÁ¤ÀåºñÀÎ MDD¸¦ ÀÌ¿ëÇÏ¿© ±íÀ̺° »ó´ëóÁüÀ» ÃøÁ¤Çϰí, ÁÖÇà¼Óµµ¿¡ µû¶ó Æ÷À屸Á¶Ã¼ÀÇ °Åµ¿À» ÇØ¼®ÇÏ¿© Â÷·®ÀÇ ¼Óµµ¿Í Æ÷Àåü °Åµ¿À» ¿ªÇÐÀûÀ¸·Î ºÐ¼®ÇÏ¿´°í, ÁÖÇà¼Óµµº° Ãþº° µ¿Àû¹°¼ºÀ» °³¹ßµÈ ¿ªÇؼ® ÇÁ·Î±×·¥À¸·ÎºÎÅÍ »êÁ¤ÇÏ¿´´Ù. ÁÖÇà¼Óµµº° µ¿ÀûƯ¼º ºÐ¼®°á°ú, Â÷·®ÀÇ ÁÖÇà¼Óµµ°¡ Áõ°¡ÇÒ¼ö·Ï ±íÀ̺° »ó´ëóÁüÀº °¨¼ÒÇÏ¿´°í, ½ÇÃøµÈ ±íÀ̺° óÁüÀ¸·ÎºÎÅÍ Æ÷À屸Á¶Ã¼ÀÇ Ãþº° ¹°¼ºÀ» ¿ªÇؼ®ÇÑ °á°ú ¼Óµµ°¡ Áõ°¡ÇÒ¼ö·Ï ź¼º°è¼ö°¡ Áõ°¡ÇÏ¿´´Ù. µû¶ó¼ ÁÖÇà¼Óµµ°¡ ÁÙ¾îµé¼ö·Ï Æ÷ÀåüÀÇ ±¸Á¶Àû ´É·Â ÀúÇÏ¿¡ Å©°Ô ¿µÇâÀ» ÁÖ´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| A new procedure needs to be developed to predict the dynamic layer properties under moving truck loads. In this study, a computer code to evaluate layer moduli of asphalt concrete pavement from measured interior deflections at various depths were developed and verified from numerical model tests. Interior deflections of the pavement are measured from Multi-Depth Deflectometer(MDD). It was found that errors between the given and backcalculated moduli in numerical analysis were less than 0.32% for several numerical models tested. When impact loads were used, a technique to determine the depth to virtual rigid base was proposed through the analysis of compressive wave velocity and impulse loading durations. It was found that errors between the given and backcalculated moduli in numerical analysis were less than 0.114% when virtual rigid base was considered in numerical analysis. The pavement behavior must be evaluated under various vehicle speeds when determining the dynamic interaction between the loading vehicle and pavement system. To evaluate the dynamic behavior on asphalt concrete pavement under various vehicle speeds, truck moving tests were carried out. From the test results with respect to vehicle speed, it was found that the vehicle speed had significant effect on actual response of the pavement system. The lower vehicle speed generates the higher interior deflections, and the lower dynamic modulus. |
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| Ű¿öµå |
| Dynamic layer properties;Truck moving tests;Multi-Depth Deflectometer;Backcalculation procedure;Vehicle speed; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.2, no.1, 2000³â, pp.135-145
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200015637533285)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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