Seismic Safety Review of Gravity Dam Based on Finite Element Method

Table 3

Calculation and analysis table of antisliding stability of foundation surface of retaining dam section under static and dynamic superposition.

Working condition	Tangential force, (kN)	Normal force, (kN)	Shear cohesion, (MPa)	Shear friction coefficient,	Horizontal seismic inertia forces (kN)		Code value
Horizontal seismic
Inertia force upstream	6392.27	21881.86	0.40	0.50	-3377.61	9.88	2.3
Horizontal seismic
Inertia force downstream	6392.27	21881.86	0.40	0.50	3377.61	3.05	2.3

Note: the above mentioned tangential force, normal force, and horizontal seismic inertia force refer to the force per unit width of the dam section, because the two-dimensional finite element model is adopted.