Bearing Capacity Failure of a Strip Foundation Abaqus

This example been chosen from Example 6.2 Sam Helwany book

In this example , we calculate the bearing capacity of a 0.6-m-wide strip foundation on a thick homogeneous layer of Ottawa sand

The foundation is situated at a depth = 0.38 m, as shown in Figure

The layer of sand is 4.5 m deep and 15 m wide

The concrete foundation is assumed to be linear elastic with a Young’s modulus of 1435 MPa and a Poisson ratio of 0.2

In this analysis , we use two steps

In first step , gravity loads and surcharge loads are applied to the sand layer

In second step , the foundation load is applied using a constant downward displacement boundary condition at the top surface of the foundation

The constant-velocity boundary condition applied to the top surface of the foundation causes the foundation to settle at a constant rate

Theoretically, the foundation pressure can be increased gradually up to the failure point (termed the bearing capacity) at which a failure surface

bearing capacity of 440 kPa predicted by Sam Helwany book
bearing capacity of 444 kPa predicted by Abaqus

Comparison between Abaqus results and Sam Helwany book results

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