Revisiting Axis Translation for Unsaturated Soil Testing
Revisiting Axis Translation for Unsaturated Soil Testing
复制标题
重新审视非饱和土测试的轴平移
DOI：
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发表时间：
2019
影响因子：
3.9
通讯作者：
N. Lu
中科院分区：
文献类型：
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作者：
N. Lu
Hilf（1956）的轴平移（AT）（也称为压力板）可以说是实验室非饱和土试验中最广泛使用的控制基质吸力的技术。AT本质上涉及两个假设：气穴在土壤保水（SWR）中并不重要，控制土壤含水量的基质吸力ψm定义为孔隙空气压力ua和孔隙水压力uw之间的差，即[图1（a）] ψ mðwððððð 1⁄4 ua-uwðwðð 1 ðð
Hilf’s (1956) axis translation (AT) (also called pressure plates) is arguably the most widely used technique for controlling matric suction in laboratory unsaturated soil testing. Two assumptions are inherently involved in the AT: cavitation is not important in soil water retention (SWR), and matric suction ψm controlling a soil’s water content is defined as the difference between pore air pressure ua and pore water pressure uw, i.e. [Fig. 1(a)] ψmðwÞ 1⁄4 ua − uwðwÞ ð1Þ