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Çѱ¹Áö¹Ý°øÇÐȸ / v.13, no.6, 1997³â, pp.25-36
ÇÇ¿¡¿ÀÄÜÀÇ °£±Ø¼ö¾Ð ¼Ò»ê½ÃÇè¿¡ °üÇÑ ¿¬±¸
( A Study on the Pore Pressure Dissipation Test of the Piezocone )
Ȳ´ëÁø;±èö¿õ; Á¤È¸¿ø, »ï¼º °Ç¼³±â¼ú¿¬±¸¼Ò ¼±ÀÓ ¿¬±¸¿ø;Á¤È¸¿ø, »ï¼º °Ç¼³±â¼ú¿¬±¸¼Ò ¼±ÀÓ ¿¬±¸¿ø;
 
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ÇÇ¿¡Á¶ÄÜÀ» ÀÌ¿ëÇÏ¸é ¿¬¾àÁö¹Ý °³·®ÈÄ ÀÓÀÇÀÇ ½ÃÁ¡¿¡¼­ Áö¹ÝÀÇ ¾Ð¹Ðµµ¸¦ ÆÄ¾ÇÇÒ ¼ö°¡ ÀÖ´Ù. ÀÌ °æ¿ì ÀÓÀÇÀÇ ½Éµµ¿¡¼­ ÇÇ¿¡Á¶ÄÜÀÇ °üÀÔÀ» ¸ØÃß°í °£±Ø¼ö¾ÐÀÌ ÀÏÁ¤ÇÑ °ª¿¡ À̸¦ ¶§±îÁö °£±Ø ¼ö¾Ð ¼Ò»ê½ÃÇèÀ» ½Ç½ÃÇϴµ¥, ¿¬¾àÁö¹ÝÀÇ Åõ¼ö°è¼ö°¡ À۱⠶§¹®¿¡ ´ëüÀûÀ¸·Î »ó´çÈ÷ ¿À·£ ½Ã°£ µ¿¾È ¼Ò»ê½ÃÇèÀ» ÇÏ°Ô µÈ´Ù. º» ³í¹®¿¡¼­´Â ħÇÏ ºÐ¼®±â¹ý °¡¿îµ¥ ÀϹÝÀûÀ¸·Î ³Î¸® ¾Ë·ÁÁ® ÀÖ´Â ½Ö°î¼±¹ý, ¾Æ»ç¿ÀÄ«¹ý, È£½Ã³ë¹ýÀ» ÀÌ¿ëÇÏ¿© °£±Ø¼ö¾Ð ¼Ò»ê½ÃÇè½ÃÀÇ ÆòÇü°£±Ø¼ö¾ÐÀ» °¢°¢ ÃßÁ¤ÇÑ ÈÄ Àå½Ã°£¿¡ °ÉÄ£ ½ÇÁ¦ ½ÃÇè°á°ú¿Í ºñ±³ÇÔÀ¸·Î½á °£±Ø¼ö¾Ð ¼Ò»ê½ÃÇè¿¡ ¼Ò¿äµÇ´Â ½Ã°£À» ´ÜÃàÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» ¿¬±¸ÇÏ¿´´Ù. ±× °á°ú, È£½Ã³ë¹ýÀ» ÀÌ¿ëÇÑ ÃßÁ¤¹æ¹ýÀÌ °¡Àå ÀûÇÕÇÑ ¹æ¹ýÀÓÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç À̸¦ ÀÌ¿ëÇÑ È¿À²ÀûÀÎ °£±Ø¼ö¾Ð ¼Ò»ê½ÃÇè ¹æ¹ýÀ» Á¦½ÃÇÏ¿´´Ù.
A degree of consolidation at any time can be evaluated by using cone penetration test after soil improvement. In this case, after stopping the penetration of a piezocone, pore pressure dissipation(PPD) best is carried out until the pore pressure remains constant. Since the hydraulic conductivity of soft ground is very small, it takes very long time to finish the PPD test. This research is performed to develop a method overcoming this problem of the PPD test and reducing the test time. The analyses are carried out in the following ways : an equilibrium pore pressure can be determined by using pore pressure measured in the middle of the test, which is predicted by hyperbolic, Asaoka and Hoshino methods. And this equilibrium pore pressure is compared with the one measured in a test of long duration. As a result of the study, it is found that Hoshino method is the best way to predict the equilibrium pore pressure in a teat of short duration. And it is proposed as a methodology to fond a minimal time in which we can get an equilibrium pore pressure.
 
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Piezocone;Dissipation test;Degree of consolidation;Pore pressure;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.13, no.6, 1997³â, pp.25-36
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920447744)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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