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Çѱ¹Áö¹Ý°øÇÐȸ / v.16, no.4, 2000³â, pp.201-208
±¤¼¶À¯ °ÝÀÚ¼ÒÀÚ¿¡ ÀÇÇÑ ¸»¶ÒÀÇ ÇÏÁßÀüÀÌ ÃøÁ¤
( Measurement of Pile Load Transfer Using Fiber Bragg Grating Sensor )
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º» ¿¬±¸¿¡¼­´Â ±¤¼¶À¯ ¼¾¼­ÀÇ ÀÏÁ¾ÀÎ °ÝÀÚ¼ÒÀÚ(Fiber Bragg Grating sensor)¸¦ ¸ðÇü¸»¶Ò¿¡ ¼³Ä¡ÇÏ°í ¸»¶ÒÀÇ ÇÏÁßÀüÀÌ ÃøÁ¤À» ½ÃµµÇÏ¿´´Ù. ¸»¶ÒÀÇ Ãà¹æÇâ ÇÏÁß ¹× ÁÖ¸é ¸¶Âû·ÂÀÇ ºÐÆ÷¸¦ ÃøÁ¤/ºÐ¼®½Ã »ç¿ëµÇ°í ÀÖ´Â ½ºÆ®·¹ÀÎ °ÔÀÌÁö¿¡ ÀÇÇÑ ¹æ¹ý¿¡ ºñÇØ ±¤¼¶À¯ °ÝÀÚ¼ÒÀÚ´Â ÇÑ ¶óÀο¡ ¿©·¯ °³ÀÇ ¼¾¼­¸¦ ¼³Ä¡ÇÔÀ¸·Î½á ¿©·¯ ÁöÁ¡À» µ¿½Ã¿¡ ÃøÁ¤ÇÒ ¼ö ÀÖ´Ù´Â °Í°ú ¼¾¼­ÀÇ ¼³Ä¡°¡ ¿ëÀÌÇÏ´Ù´Â ÀåÁ¡À» °¡Áö°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­ ±¤¼¶À¯ °ÝÀÚ¼ÒÀÚ¿Í ½ºÆ®·¹ÀÎ °ÔÀÌÁö¸¦ ¸ðÇü¸»¶Ò¿¡ ÇÔ²² ¸Å¼³Çϰí ÀçÇϽÃÇèÁß ÇÏÁßÀüÀ̸¦ ÃøÁ¤ÇÑ °á°ú, µÎ ÃøÁ¤Ä¡°¡ »ó´çÈ÷ À¯»çÇÑ °æÇâÀ» º¸¿´À¸¸ç, ¼¾¼­ÀÇ »ýÁ¸Á¤µµ¿Í ¼³Ä¡ÀÇ ¿ëÀ̼º¿¡ À־´Â ±¤¼¶À¯¼¾¼­°¡ ¿ì¼öÇÑ °á°ú¸¦ º¸¿´´Ù. µû¶ó¼­, ±¤¼¶À¯ °ÝÀÚ¼ÒÀÚÀÇ ¸»¶Ò ÇÏÁßÀüÀÌ ÃøÁ¤¿¡ ´ëÇÑ Àû¿ë °¡´É¼ºÀÌ ÃæºÐÇÑ °ÍÀ¸·Î °á·ÐÁö¾ú´Ù.
Axial load distribution in model piles was measured by fiber Bragg Grating(FBG) sensor to investigate a possibility of analyzing the load transfer mechanism by Fiber Optic sensor system. Since FBGs of different wave lengths can be multiplexed in an optical fiber, the installation of sensor system and the measurement of strains are relatively simple, compared with consisting strain gages. In this study, FBG sensors and electric strain gages were embedded in the same piles and the distributions of load transfer by two sensor systems were measured. It was observed from the test results that the variations of axial load by both systems showed insignificant difference and that the measurements by FBG were smoother than those by strain gage. Under the environments of laboratory testing, survival rate of embedded FBG system was higher than that of strain gage. Therefore, it was concluded that the use of FBG sensor has a great potential for the measurement of load transfer for pile foundation.
 
Ű¿öµå
Fiber optic sensor;Fiber bragg grating;Load transfer;Model pile;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.16, no.4, 2000³â, pp.201-208
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920441471)
¾ð¾î : ¿µ¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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