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Çѱ¹µµ·ÎÇÐȸ / v.5, no.3, 2003³â, pp.11-20
½ÇÇè¹æ¹ý¿¡ µû¸¥ Æ÷Àå ÄÜÅ©¸®Æ®ÀÇ ÇǷμö¸í
( Fatigue Lives of Pavement Concrete According to Fatigue Test Methods )
À±°æ±¸;±èµ¿È£;ȫâ¿ì; °­¿ø´ëÇб³ Åä¸ñ°øÇаú;°­¿ø´ëÇб³ ¼®À纹ÇսżÒÀçÁ¦Ç°¿¬±¸¼¾ÅÍ;ÃæÁÖ´ëÇб³ °Ç¼³µµ½Ã°øÇаú;
 
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±³·®, µµ·Î, °øÇ× ¹× ÇØ¾ç±¸Á¶¹° µîÀº ¹Ýº¹ÇÏÁßÀ» ¹Þ°Ô µÇ´Â ´ëÇ¥Àû Åä¸ñ±¸Á¶¹°ÀÌ´Ù. ƯÈ÷ °øÇ×À̳ª µµ·ÎÆ÷Àåü´Â ÈÚ¿¡ ÀÇÇÑ ÀÎÀå¿¡ ÀÇÇØ ÆÄ±«µÇ±â ¶§¹®¿¡ »ç¿ëÀç·áÀÇ Æ¯¼º¿¡ ±âÃÊÇÑ ÇǷμö¸íÀÇ °íÂûÀº ¸Å¿ì Áß¿äÇÏ´Ù. µû¶ó¼­, ÀÌ ³í¹®¿¡¼­´Â Æ÷Àå ÄÜÅ©¸®Æ®ÀÇ ÇǷμö¸íÀ» ÁÖ¿ä ½ÇÇ躯¼ö¿¡ µû¶ó ½ÇÇèÇÏ°í ½ÇÇè¹æ¹ý¿¡ µû¶ó ºñ±³ ºÐ¼®ÇϰíÀÚ ÇÏ¿´´Ù. ÇǷνÇÇèÀº Âɰ·ÀÎÀå ÇǷνÇÇè ($phi150mm{ imes}75mm$)°ú ÈÚÀÎÀå ÇǷνÇÇè ($150mm{ imes}150mm{ imes}550mm$) ¹æ¹ýÀ» Àû¿ëÇÏ¿© ÇÏÁßÀçÇÏ ¼Óµµ(1, 5, 10, 20Hz), ÇÏÁßÀçÇÏ Çü»ó(»ç°¢ÆÄ, Á¤ÇöÆÄ, »ï°¢ÆÄ). ½ÃÇèüÀÇ ½ÀÀ±Á¶°Ç(°ÇÁ¶»óÅ ½ÀÀ±»óÅÂ) ¹× ¾ç»ý±â°£(28ÀÏ, 56ÀÏ)À» ÁÖ¿ä ½ÇÇ躯¼ö·Î ÇÏ¿© ¼öÇàÇÏ¿´´Ù. ½ÇÇè°á°ú ÇÏÁßÀçÇÏ ¼Óµµ°¡ ´À¸±¼ö·Ï ÇǷμö¸íÀº ÇöÀúÈ÷ °¨¼ÒÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ÇÏÁßÀçÇÏ ¼Óµµ°¡ ºü¸¦¼ö·Ï ÇǷμö¸íÀº Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÇÏÁßÀçÇÏ Çü»ó¿¡ µû¶ó¼­´Â Á¤ÇöÆÄ¸¦ ±âÁØÇÏ¿© »ç°¢ÆÄ¿¡¼­´Â ÇǷμö¸íÀÇ ±Þ°ÝÇÑ °¨¼Ò¸¦ ³ªÅ¸³ÂÀ¸¸ç »ï°¢ÆÄ¿¡¼­´Â ÇǷμö¸íÀÌ Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù ¶ÇÇÑ, ½ÃÇèüÀÇ ½ÀÀ±Á¶°Ç¿¡ µû¶ó¼­´Â °ÇÁ¶»óÅ¿¡ ºñÇÏ¿© ½ÀÀ±»óÅ¿¡¼­´Â ÇǷμö¸íÀÌ °¨¼ÒÇÏ¿´À¸¸ç, ¾ç»ý±â°£¿¡ µû¶ó¼­´Â Àç·É 28ÀÏ¿¡¼­ 56ÀÏ·Î Áõ°¡ÇÔ¿¡ µû¶ó ÇǷμö¸íÀÌ Áõ°¡ÇÔÀ» ³ªÅ¸³»¾ú´Ù.
Concrete structures such as bridges, pavement, and offshore structures are normally subjected to repeated load. Because highway and airfield pavements are to resist tension in bending, fatigue failure behavior is very important the fatigue life of materials. Therefore, in this paper was carried according to the fatigue test method and experiment variables for pavement concrete. The fatigue tests were applied split tension($150{ imes}75$ in size) and flexural($150mm{ imes}150mm{ imes}550mm$ in size) beam fatigue test method. Major experimental variable in the fatigue tests in order to consideration of fatigue life were conducted loading frequency of 1, 5, 10, 20Hz and loading shape of block, sine, triangle and moisture condition of dry and wet condition and curing age of 28day and 56day. The test results show that the effect of loading frequency increasing the frequency increased fatigue life, decreased significant at frequencies below 200 cycles. The effect of loading wave form on fatigue life show that a block decreased, triangular increased in comparison with sine. The effect of moisture condition decreased in wet condition in comparison with dry condition. The effect of curing age increased in 564ays in comparison with 28day.
 
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ÇÇ·ÎÆÄ±«;ÇǷνÇÇè;Âɰ·ÀÎÀå;ÇǷμö¸í;fatigue failure;fatigue test;split tension;fatigue life;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.5, no.3, 2003³â, pp.11-20
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200315637523207)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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