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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.6, 2003³â, pp.335-342
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Àüüº¯Çü·ü ¹üÀ§¿¡¼ º¯ÇüƯ¼º Æò°¡¸¦ À§ÇÑ °ø³»ÀçÇϽÃÇè ÀåÄ¡ °³¹ß
( Development of Pressuremeter for Evaluation of Deformation Characteristic at Whole Strain Ranges ) |
| ±Ç±âö; µ¿ÀÇ´ëÇб³ Åä¸ñ°øÇаú;
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| ¾ö¹ÐÇÑ º¯ÇüÇØ¼®À» À§Çؼ´Â Àüüº¯Çü·ü ¹üÀ§¿¡¼ ½Å·Ú¼º ÀÖ´Â º¯ÇüƯ¼º Æò°¡°¡ °¡´ÉÇÑ ÇöÀå½ÃÇè ±â¹ýÀÌ °³¹ßµÇ¾î¾ß ÇÑ´Ù. °ø³»ÀçÇϽÃÇèÀº ÇöÀåÁö¹ÝÀÇ º¯Çü·ü Å©±â¿¡ µû¸¥ Àü´Üź¼º°è¼ö¸¦ Á÷Á¢ Æò°¡ÇÒ ¼ö ÀÖ´Â À¯ÀÏÇÑ ½ÃÇè±â¹ýÀÌ´Ù. º» ¿¬±¸¿¡¼´Â $10^{-5}$% ¡20%ÀÇ Àüüº¯Çü·ü ¹üÀ§¿¡ ´ëÇÏ¿© Àû¿ë °¡´ÉÇÑ °øµ¿º¯Çü ÃøÁ¤¹æ¹ýÀ» °í¾ÈÇÏ¿´´Ù. °³¹ßµÈ ÀåºñÀÇ ¼øÀÀ¼º °ËÁõÀ» À§ÇÏ¿© °ËÁõÅäÁ¶¿¡ ´ëÇÑ ½ÃÇè°ú ÇöÀå½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. °³¹ßµÈ Àåºñ´Â $5 imes 10^{-2}$% ÀÌ»óÀÇ º¯Çü·ü ¹üÀ§¿¡¼ ½Å·Ú¼º ÀÖ´Â Àü´Üź¼º°è¼ö ÃøÁ¤ÀÌ °¡´ÉÇÏ¿´´Ù. ¹Ì¼ÒÇÑ °øµ¿º¯ÇüÀ» ÃøÁ¤Çϴµ¥ ¹ß»ýÇÏ´Â ÁÖ¿ä ¿ÀÂ÷ÀÇ ¿øÀÎÀº °øµ¿º¯Çü ÃøÁ¤ ½Ã½ºÅÛ ÀÚüº¸´Ù´Â ÃøÁ¤ºÀ°ú ¸âºê·¹ÀÎ »çÀÌ¿¡¼ ¿ªÀçÇÏ-ÀçÀçÇÏ °úÁ¤¿¡ ¹ß»ýÇÏ´Â ¸¶ÂûÀÎ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| In order to analyze the deformational behavior accurately, the in-situ testing technique which provides the reliable deformational characteristics at whole strain ranges, needs to be developed. The pressuremeter is a unique method for assessing directly the in-situ shear modulus of soils with strain amplitude. This paper introduces a new alternative, the cavity strain measuring system in pressuremeter designed for whole strain ranges of $10^{-5}$%¡20%. Not only in the synthetic calibration chamber but also in the field, the pressuremeter tests were performed to determine the compliance of the new developed pressuremeter system. The variation in shear modulus with strain amplitude above $5 imes 10^{-2}$% was reliably determined by the developed pressuremeter. It is concluded that the major cause of error in small cavity strain measuring is not from the cavity strain measuring system but from the friction between measuring arm and membrane during unloading-reloading loops. |
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| Ű¿öµå |
| Cavity strain measuring system;Deformation characteristics;PMT;Whole strain ranges; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.6, 2003³â, pp.335-342
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922148107)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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