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GEO5

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MSE Wall

The program allows the following verifications:

Verification

The program verifies the external stability of so called fictitious structure consisting of the structure front face and a curve bounding the geo-reinforcements end points. The fictitious structure is loaded by calculated forces acting on the structure and checked for overturning and slip - similarly to the verification of a gravity wall.

Dimensioning

From the calculated forces acting on a structure, the program determines the forces in the checker cross-section. Only the forces above the checked joint (see figure) are taken into account. Reinforcements introduce stabilizing forces which equal to the lower value of the two bearing capacities (against tearing and pull-out). The actual verification for overturning and slip follows aftewords. The program also allows for an automatic verification of the most critical cross-section.

Bearing capacity

The bearing capacity of foundation soil below a fictitious structure is verified. The constant stress in the foundation joint is determined from all forces acting on a structure and calculated in the "Verification" frame. In case of the input foundation the bearing capacity is determined from all forces calculated in the "Dimensioning" frame (the option "Entire wall" must be selected).

Slip on georeinforcement

The slip of a reinforced soil block along a geo-reinforcement is verified. The reinforced block is bounded the wall front face, the checked geo-reinforcement, a vertical line passing through the geo-reinforcement end point and terrain. The block is loaded by an active earth pressure and by stabilizing forces due to geo-reinforcements exceeding the boundary of the reinforced block and by other forces.  The program also allows to automatically verificate sliding along individual reinforcements and find the most critical result.

Internal stability

Strength of reinforcement and pull-out resistence are checked.

Global stability

The program allows to verify the overall slope stability along a circular slip surface. The slip surface can be automatically optimized, i.e. the program automatically selects the verification along the most critical surface.  The actual slope stability analysis can be carried out with the help of two slice methods: Spencer (rigorous, more accurate method) and Bishop (more conservative, simpler, more easily finds the solution satisfying equilibrium conditions). 

Slope stability

Verification of overall (global) stability by the "Slope stability" program.