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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.8, 2010³â, pp.15-25
ÇùÀçÃþ ŽÁö¸¦ À§ÇÑ ¼±´ÜºñÀúÇ× ÄÜ
( Cone Resistivity Penetrometer for Detecting Thin-Layered Soils )
À±Çü±¸;Á¤¼øÇõ;±è·¡Çö;ÀÌÁ¾¼·; °í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇкÎ;Æ÷½ºÄڰǼ³ Åä¸ñ±â¼ú±×·ì;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇкÎ;
 
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Á¡ÅäÃþ »çÀÌ¿¡ Á¸ÀçÇÏ´Â ¸ð·¡ ÇùÀçÃþÀº ¿¬¾àÁö¹Ý °Åµ¿¿¡ Áß¿äÇÑ ¿µÇâÀ» ¹ÌÄ£´Ù. ÇùÀçÃþÀº ÁַΠǥÁØ ÄÜ(´Ü¸éÀû: $10cm^2$)¿¡¼­ ÃøÁ¤µÈ Áö¹ÝÀÇ ÀúÇ׷°ú °£±Ø¼ö¾Ð °ªÀ» ÀÌ¿ëÇÏ¿© Æò°¡Çϰí ÀÖÁö¸¸, ³ôÀº ÇØ»óµµ¸¦ À§ÇÏ¿© ¼ÒÇü ÄÜÀÌ ³Î¸® Ȱ¿ëµÇ°í ÀÖ´Ù. º» ³í¹®ÀÇ ¸ñÀûÀº ¿¬¾àÁö¹Ý¿¡ ¾ã°Ô ºÐÆ÷µÈ ÇùÀçÃþÀ» ¼±´ÜÀúÇ×·Â, Áָ鸶Âû·Â ±×¸®°í Àü±âºñÀúÇ×À» ÀÌ¿ëÇÏ¿© Æò°¡ÇÒ ¼ö ÀÖ´Â Àü±âºñÀúÇ× ÄÜ(Cone Resistivity Penetrometer, CRP)À» °³¹ßÇϰí Àû¿ëÇÏ´Â °ÍÀÌ´Ù. CRP´Â °¢°¢ ½Ç³»½ÇÇè(´Ü¸éÀû: $0.78cm^2$, Á÷°æ: 1.0cm)°ú ÇöÀå½ÇÇè(´Ü¸éÀû: $1.76cm^2$, Á÷°æ: 1.5cm)¿¡ Ȱ¿ëµÇµµ·Ï Á¦ÀÛÇÏ¿´À¸¸ç, ±æÀ̴ ǥÁØ ÄÜ(´Ü¸éÀû: $10cm^2$, Á÷°æ: 3.57cm)ÀÇ ´Ü¸éÀû°ú ¸¶ÂûºÎÀÇ ¸éÀûºñ¸¦ °í·ÁÇÏ¿© Á¦ÀÛÇÏ¿´´Ù. ½Ç³»½ÇÇèÀº ¸ð·¡¿Í Á¡Åä°¡ ¹Ýº¹ÀûÀ¸·Î Á¶¼ºµÈ ´ÙÃþÀÇ Ãþ»óŽÁö ¼¿À» »ç¿ëÇÏ¿© °¢ ÁöÃþÀÇ °æ°è¸éÀ» Ž»çÇÏ¿´À¸¸ç, ÇöÀå½ÇÇèÀº ±¤¾çÁö¿ª¿¡¼­ ½Éµµ 6mºÎÅÍ 15m±îÁö °üÀÔ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. CRP´Â ½Ç³»½ÇÇè¿¡¼­ ÃøÁ¤µÈ ¼±´ÜÀúÇ׷°ú Àü±âºñÀúÇ×À¸·Î Á¶¼ºµÈ ½Ã·áÀÇ °¢ ÁöÃþ °æ°è¸éÀ» ¶Ñ·ÇÇÏ°Ô Æò°¡ÇÏ¿´À¸¸ç, ÇöÀå½ÇÇè¿¡¼­´Â 3°³ÀÇ ÇùÀçÃþÀ» ŽÁöÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­ °³¹ßµÈ CRP´Â ½Ç³» ¹× ÇöÀå°á°ú Àû¿ë¼ºÀÌ ¶Ù¾î³ª ÃßÈÄ À¯¿ëÇÏ°Ô »ç¿ëµÉ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
The thin-layered sand seam in clay affects the soil behavior. Although the standard cone penetrometer (A: $10cm^2$) have been used to evaluate the thin-layered soil, the smaller diameter cone penetrometer have been commonly recommended because of the high resolution. The purpose of this study is the development and application of the Cone Resistivity Penetrometer (CRP), which detects qc, fs, and electrical resistivity at cone tip for the evaluation of thin layered soils. Two sizes of the CRP are developed for the laboratory and field test. The projected areas of CRP for the laboratory and field tests are $0.78cm^2$ (d: 1.0 cm) and $1.76cm^2$ (d: 1.5 cm), repectively. The length of friction sleeve is designed in consideration of ratio of the projected area to the friction sleeve area. The application tests are carried out by using the artificially prepared thin-layered soils in the laboratory. In addition, the field tests are conducted at the depth of 6 to 15 m in Kwangyang. In the laboratory test, the measured electrical resistivity and cone tip resistance detect the soil layers. Moreover, in the field test the CRP investigates the three thin-layered soils. This study suggests that the CRP may be a useful tool for detecting thin-layered in soft soils.
 
Ű¿öµå
Cone tip resistance;Electrical resistivity;Field test;Friction sleeve;Smaller diameter cone;Thin-layered soil;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.8, 2010³â, pp.15-25
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201033538932678)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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