4.1 Loess Moistening Deformation Calculation Method
Consolidation compression tests of undisturbed soil samples in typical loess site with different water contents under 200kPa load conditions were carried out, and the curve was fitted as shown in Fig. 9.
[Insert Figure 9]
The moistening deformation curve was fitted using Eq. (2):
(2)
where y is the vertical deformation of the 20-mm thick soil layer in mm and θ is the moisture content.
At the position of P i (i=0,1,2…4), the initial water content was θ i0 and the initial vertical deformation was yi0 . At the timet , the water content and vertical deformation atP i were θ t0 andy it, respectively. The moistening deformation calculation diagram is given in Fig. 10.
[Insert Figure 10]