Recent Experiences of Reinforced Soil Retaining Structures in China - Reinforced Soil Engineering: Advances in Research and Practice - page 169

Figure 10 Analysis of sliding surface.

3.2 Consistent Design Method of Reinforced Wall and Steep
Slope

3.2.1 Analysis of Earth Pressure

Figure 10 shows a steep slope or wall of cohensionless soil. The slope angle is
bf

:

, b # p = 2 It is well known that the condition of stability of a

cohensionless slope is b f. Assume that the same soils are covered on the

steep slope to form a slope with angle f; the slope is on limit equilibrium.
Analyzing the wedge AOZ with elasticity theory, where Ary's function is a
polynomial with three powers and is based on the boundary condition of the
wedge (see Fig. 10), the following solution can be obtained:

#

s g ¼ tanfK a gx 2 K a gz

gx 2 1 þ tan 2 fK a gz

s z ¼ tan 3 fK a þ tanf ð 4 Þ

tan 2 fK a gx t gz ¼

2

tanfK a gz

Figure 11 Balance of wedge on OB.