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Çѱ¹Áö¹Ý°øÇÐȸ / v.15, no.1, 1999³â, pp.175-183
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ȰdzÈÅäÀÇ µ¿Àû °Åµ¿
( Dynamic Behavior of Decomposed Granite Soils ) |
| ÀÌÁ¾±Ô; ´Ü±¹´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æ°øÇаú;
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| ÃÖ±Ù ¿ì¸®³ª¶óµµ ³»Áø¼³°èÀÇ Çʿ伺¿¡ µû¶ó ÁöÁø½Ã µîÀÇ °íº¯Çü·ü·ÎºÎÅÍ Á¤¹Ð±â°è±âÃÊ¿¡ ¹ÌÄ¡´Â ¹Ì¼Òº¯Çü·ü Áøµ¿±îÁö ±âÃÊÁö¹ÝÀÇ µ¿Àû°Åµ¿¿¡ °üÇÑ ¿¬±¸°¡ Á¡ÁõÇϰí ÀÖ´Â ½ÇÁ¤ÀÌ´Ù. ÇÑÆí, ȰdzÈÅä´Â ±¹³»¿¡ °¡Àå ³Î¸® ºÐÆ÷µÇ¾î ÀÖ´Â ´ëÇ¥ÀûÀÎ ÈëÀ¸·Î½á Áö¹ÝÁøµ¿¹®Á¦ ÇØ°á¿¡ ÇÊ¿äÇÑ Áö¹Ý°è¼ö µîÀÇ µ¿Àû°Åµ¿ ÆÄ¾ÇÀÌ ½Ã±ÞÇÑ ÇüÆíÀ̳ª ÀÌ¿¡ °üÇÑ ¿¬±¸´Â ±ØÈ÷ ÇÑÁ¤µÇ¾î ÀÖ´Ù. º» ¿¬±¸´Â ¼ö¿øÁö¹æÀÇ È°Ç³ÈÅä¿¡ ´ëÇÏ¿© °£±Øºñ, Æ÷ȵµ°¡ ´Ù¸¥ °ø½Ãü¸¦ Á¦ÀÛÇÏ¿© ±¸¼Ó¾Ð·Â ¹× ¹Ýº¹ÀÀ·Âºñ¸¦ º¯È½ÃÄÑ °øÁøÁÖ½ÃÇè°ú ¹Ýº¹»ïÃà½ÃÇèÀ» ½Ç½ÃÇÏ¿© ºÒÆ÷È È°Ç³ÈÅäÀÇ µ¿Àû°Åµ¿À» °íÂûÇÏ¿´°í Áö¹Ýº¸°À» À§ÇÏ¿© ÈçÈ÷ »ç¿ëµÇ´Â Èë-½Ã¸àÆ® È¥ÇÕÅä¿¡ ´ëÇÏ¿©µµ ½Ã¸àÆ® È¥ÇÕºñ¿Í °£±Øºñ¸¦ ´Þ¸®ÇÑ °ø½Ãü¿¡ ´ëÇÏ¿© °°Àº Á¶°ÇÇÏ¿¡ µ¿Àû°Åµ¿À» ±¸¸íÇϱâ À§ÇÑ µÎ°¡Áö °°Àº ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ¿¬±¸°á°ú ºÒÆ÷È È°Ç³ÈÅäÀÇ Àü´Üź¼º°è¼ö´Â Ç¥¸éÀå·Â¿¡ Áö¹èµÇ¸ç ÃÖÀûÆ÷ȵµ´Â °£±Øºñ¿¡ µû¶ó °øÁøÁÖ ½ÃÇèÀÎ °æ¿ì ¾à 17%~l8%, ¹Ýº¹»ïÃà½ÃÇèÀÎ °æ¿ì ¾à 10%~l5% ·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ, ¼ö¿øÁö¿ªÀÇ È°Ç³ÈÅä¿¡ ´ëÇÑ ÇÑ°è º¯Çü·ü ¹üÀ§¿Í Æò±ÕÀü´Üź¼º°è¼öµµ ÃßÁ¤ÇÒ ¼ö ÀÖ¾ú´Ù. ÇÑÆí, ÀÏ·ÃÀÇ °øÁøÁÖ½ÃÇè°ú ¹Ýº¹»ïÃà½ÃÇèÀÇ °á°ú¸¦ Åä´ë·Î ÇÏ¿© ȰdzÈÅäÀÇ ½Ã¸àÆ® È¥ÇÕ·®¿¡ µû¸¥ ÃÖ´ëÀü´Üź¼º°è¼ö ÃßÁ¤½ÄÀ» ºñ±³Àû Á¶¹ÐÇÑ °æ¿ì¿Í ºñ±³Àû ´À½¼ÇÑ °æ¿ì·Î ³ª´©¾î Á¦¾ÈÇÏ¿´´Ù. |
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| Recently, problems related to vibrations of decomposed granite soils have acquired increasing attention in Korea because those soils cover approximately one third of the country. Both resonant column and cyclic triaxial test were performed to investigate deformation characteristics of unsaturated and cement-mixed decomposed granite soils in Suwon region. The important soil parameters in this respect are the shear moduli, dynamic moduli of elasticity and damping ratios. The dynamic parameters are influenced by variables such as strain amplitude, ratio of loading cycles, and degree of saturations, etc. Test results and data have shown that the optimum degree of saturation to the maximum shear modulus due to a capillary menisci effect was about 17~18 % at low strain amplitude and 10~15 % at intermediate strain amplitude. This paper suggests the range of threshold strain and mean shear modulus of decomposed granite soils in Suwon region. It also proposed the empirical relationship between the dynamic parameters for cement-mixed and non-mixed decomposed granite soils. |
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| Ű¿öµå |
| Decomposed Granite Soil;Shear Modulus;Dynamic Youngs Modulus;Damping Ratio;Cement-mixed Granite Soil.; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.15, no.1, 1999³â, pp.175-183
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911921748990)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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