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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.11, 2006³â, pp.37-45
¿¬¾àÁö¹ÝÀÇ °­¼º ÃøÁ¤À» À§ÇÑ º¥´õ ¿¤¸®¸ÕÆ®ÀÇ ÇöÀå Àû¿ë¼º ¿¬±¸
( Implementation of Bender Element to In-situ Measurement of Stiffness of Soft Clays )
¸ñ¿µÁø;Á¤Àç¿ì;ÇѸ¸Áø; °æÈñ´ëÇб³ Åä¸ñ°ÇÃà´ëÇÐ;°æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;°æÈñ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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1970³â´ë Á߹ݺÎÅÍ bender elements¸¦ ÀÌ¿ëÇÏ¿© Èë °ø½ÃüÀÇ Àü´ÜÆÄ ¼Óµµ¸¦ ÃøÁ¤ÇÏ´Â ±â¼úÀÌ ¹ßÀüµÇ¾î ¿Ô´Ù. ¾ãÀº ÇÇ¿¡Á¶ ¼¼¶ó¹ÍÆÇ°ú ź¼º ¸ÅÁúÀ» °ãÃļ­ ¸¸µç bender elements´Â »ïÃàÀÔÃà½ÃÇèÀåÄ¡ÀÇ ÀúÆÇ(base)¿Í top cap¿¡ ¼³Ä¡ÇÏ¿© ¾×Ãò¿¡ÀÌÅÍ¿Í Æ®·£½ºµà½º·Î °¢°¢ »ç¿ëÇÏ¿© °ø½ÃüÀÇ Àü´ÜÆÄ ¼Óµµ¸¦ ÃøÁ¤Çϰí ÀÖ´Ù. bender elements¸¦ ÇöÀå¿¡ Àû¿ëÇÏ´Â ¿¹ºñ ´Ü°è·Î, ÃÖÀûÀÇ º¥´õ Á¦ÀÛ°ú ±âÇÏÇÐÀû ¹èÄ¡¿¡ ´ëÇÑ ¿¬±¸¸¦ ½Ç³» Ä«¿Ã¸®³ªÀÌÆ® ÅäÁ¶¿¡¼­ ¼öÇàÇÏ¿´´Ù. ÀÌ ¿¹ºñ½ÃÇè¿¡¼­ °³¹ßµÈ bender element¸¦ »ç¿ëÇÏ¿© °¹¹ú¿¡¼­ Å©·Î½ºÈ¦ ¹æ½Ä°ú ÀÎȦ ¹æ½ÄÀ¸·Î ź¼ºÆÄ ½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. ÀÏ·ÃÀÇ bender elements¸¦ ±íÀÌ 2m±îÁö »ðÀÔÇÏ¿© ÇöÀå½ÃÇèÀÇ Àû¿ë¼ºÀ» È®ÀÎÇÏ¿´´Ù. ÃßÈÄ ±íÀº ½Éµµ±îÁö »ðÀÔÇÒ ¼ö ÀÖ´Â ¸Çµå·¼(mandrel)°ú °üÀÔÀåÄ¡¸¦ °³¹ßÇÏ¿© ¿¬¾àÁö¹ÝÀÇ Åº¼ºÆÄ ¼Óµµ ÃøÁ¤ ÀåÄ¡ °³¹ßÀ» ¿Ï¼ºÇϰíÀÚ ÇÑ´Ù.
Bender elements, composed of thin piezo-ceramics and elastic shims, have been used to measure shear wave velocities of specimens in laboratories. In a preliminary stage of their field applications, an in-house research of optimizing suitable bender elements and their geometrical arrangement has been carried out in a barrel of kaolinite-water mixture. Two types of measurement configuration, similar to cross-hole and in-hole seismic testing, have been implemented. prototype instrumented rods were penetrated into a soft clay layer in the west coast and excellent shear waves were recorded. Development of penetration device (mandrel) and associated instrumented rods are in progress for deeper investigation.
 
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Bender elements;Cross-hole type;In-hole type;Shear wave velocity;Soft clay;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.11, 2006³â, pp.37-45
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200604623519929)
¾ð¾î : Çѱ¹¾î
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