Internal stability of a Gabion Wall - Limit States
Reduced parameters of the gabion material, which depend on the coefficients set in the "Wall analysis" tab, are used in the verification analysis.
1) Check for overturning stability:
where: | Movr | - | overturning moment |
Mres | - | resisting moment |
2) Check for slip:
where: | N | - | |
φd | - | design angle of internal friction of soil | |
cd | - | design cohesion of the soil | |
d | - | width of block | |
e | - | eccentricity | |
γs | - | reduction coefficient of sliding resistance | |
H | - | ||
Fres | - | resisting force (from georeinforcement and mesh overlap) | |
µ | - | reduction coefficient |
3) Check for bearing capacity with respect to the lateral pressure:
where: | T | - | average value of the pressure acting on the face of the bottom block |
S | - | force per one running meter of the joint | |
Su | - | joint bearing capacity (for input, use the "Material" frame) | |
b | - | width = 1m of structure width | |
h | - | height of the block | |
Dtotal | - | overall width of meshes loaded in compression T |
4) Check for bearing capacityof joint between blocks:
where: | Nd | - | tensile force per one running meter of the upper joint of the bottom block |
Nu | - | strength of the mesh (for input, use the frame "Material") | |
Qtr | - | shear force transmitted by friction and cohesion between the blocks | |
γt | - | reduction coefficient of friction between the blocks (for input, use the "Wall analysis") | |
h | height of the block | ||
Dtotal | overall width of meshes loaded in compression T | ||
Dupp | width of the upper mesh between blocks loaded in tension |