土力SUU的C與C'值的問題 - 土木
By Jacob
at 2011-07-22T00:30
at 2011-07-22T00:30
Table of Contents
大家好
想請教幾個土力的問題
(1)在SUU(飽和土壤的UU test)的圖形如下
http://ppt.cc/q,L9
其中(phi)uu=0
且 Cuu(不排水剪力強度)=(西格瑪1-西格瑪3)/2=Mohr半徑 不等於0
又因為唯一的有效應力Mohr圓與總應力Mohr直徑相同
且SUU不受圍壓(西格瑪3)大小影響,其(西格瑪1-西格瑪3)的值都固定
那是否可以推論
(phi)uu’=0 且Cuu=Cuu’=(西格瑪1-西格瑪3)/2 ???
還是可能會有Cuu 不等於0 , 但Cuu’=0的情形發生??
原因為何呢???
(2)NC Cray表示C=C'=0 , 那如果把NC Cray拿來做SUU的話
那麼C值到底該如何判斷??
以上 煩請板上先進解惑
感謝~~
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