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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.5, 2008³â, pp.117-127
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´ÙÁüÁö¹ÝÀÇ ¸ð°üÈí¼ö·Â º¯È¿¡ µû¸¥ ź¼º°è¼ö Æò°¡¸¦ À§ÇÑ VPPE-BE ½ÃÇè ½Ã½ºÅÛ °³¹ß
( Development of VPPE-BE Testing System to Evaluate Modulus under Post-Compaction Variation in Matric Suction for Unsaturated Compacted Soils ) |
| À̼¼Çö;¼¿ø¼®;Ãß¿¬¿í;±èµ¿¼ö; Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;¹Ì ÅØ»ç½º ¿À½ºÆ¾ ÁÖ¸³´ëÇб³;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø °Ç¼³ ¹× ȯ°æ°øÇаú;
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| º» ³í¹®¿¡¼´Â ºÒÆ÷È »óÅ·ΠÁ¸ÀçÇÏ´Â ´ÙÁü Áö¹Ý¿¡ ´ëÇÏ¿© ÇÔ¼öƯ¼º°î¼±ÀÇ È¹µæ»Ó¸¸ ¾Æ´Ï¶ó ´Ù¾çÇÑ ¸ð°üÈí¼ö·Â º¯È¿¡ µû¸¥ ź¼º°è¼ö Æò°¡¸¦ À§ÇØ Á¾·¡ÀÇ ¾Ð·ÂÆÇ ÃßÃâ ½ÃÇè±â(VPPE)¸¦ °³¼±ÇÏ¿´´Ù. À̸¦ À§ÇØ, ºñÆÄ±« ½ÃÇèÀÌ °¡´ÉÇÑ º¥´õ¿¤¸®¸àÆ®(BE) ½ÃÇè ½Ã½ºÅÛÀ» µµÀÔÇÏ¿© Àü´ÜÆÄ ¼Óµµ¿Í ÃÖ´ë Àü´Üź¼º°è¼ö¸¦ Æò°¡ÇÏ¿´´Ù. °³¹ßµÈ ½ÃÇè ½Ã½ºÅÛÀ» ÀÌ¿ëÇÏ¿© ½Ã°ø ÁßÀÎ ±¹³» µµ·Î ÇöÀå¿¡¼ äÃëµÈ 3Á¾ÀÇ ³ë»óÅä¿¡ ´ëÇØ ¸ð°üÈí¼ö·Â ¹× ÇÔ¼öºñ º¯È¿¡ µû¸¥ ÃÖ´ë Àü´Üź¼º°è¼öÀÇ º¯È¸¦ Æò°¡ÇÏ¿´´Ù. ¶ÇÇÑ ½ÃÇè°á°ú¸¦ ±âÁ¸ÀÇ ¸ð°üÈí¼ö·Â Á¶Àý ºñµêÀü´Ü½ÃÇè ¹× ÇöÀå ź¼ºÆÄ ½ÃÇèÀ¸·ÎºÎÅÍ È¹µæÇÑ °á°ú¿Í ºñ±³ÇÔÀ¸·Î½á °³¹ßµÈ ½ÃÇè ½Ã½ºÅÛÀÇ Å¸´ç¼ºÀ» °ËÁõÇÏ¿´´Ù. º» ¿¬±¸¿¡¼ Á¦¾ÈµÈ »õ·Î¿î VPPE-BE ½Ã½ºÅÛÀº ÇâÈÄ, ź¼º°è¼öÀÇ °èÀýÀû º¯È ¸ðµ¨ °³¹ßÀ» À§ÇÑ µµ±¸·Î¼ÀÇ È¿À²ÀûÀÎ Àû¿ëÀÌ °¡´ÉÇÔÀ» È®ÀÎÇÏ¿´´Ù |
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| The volumetric pressure plate extractor (VPPE) was modified for the measurement of shear wave velocity ($V_s$) at various levels of matric suction as well as soil water characteristic curve (SWCC). A non-destructive technique with a pair of bender element (BE) was employed in order to measure the $V_s$ and the corresponding maximum shear modulus ($G_{max}$) of unsaturated soil specimens. Three types of soil were collected from different road construction sites in Korea. For all test soils, the variations in $G_{max}$ with the various levels of water content and matric suction were investigated using the developed apparatus. Compared with the preceding results from the suction-controlled torsional shear (TS) testing system and in-situ seismic tests, the feasibility fur evaluating modulus characteristics of unsaturated compacted soils with the developed VPPE-BE system was assessed. It was confirmed that the newly developed system would be potentially helpful in modeling seasonal variation of modulus. |
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| Ű¿öµå |
| Bender Element (BE);Matric Suction, Maximum Shear Modulus ($G_{max}$);Unsaturated Compacted Soil;Volumetric Pressure Plate Extractor (VPPE);Water Content; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.5, 2008³â, pp.117-127
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200816256327232)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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