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Effect of Tie Beam Dimensions on the Behaviors of Isolated Footings Under Eccentric Loading

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Document pages: 17 pages

Abstract: Background: Foundations may be subjected to eccentric loads. If the load is eccentric the stress distribution underneath the footing will be non-uniform causing differential settlement between the two edges. Objective: In the present study, the finite element program software PLAXIS 3D 2014 has been used to study the effect of tie beam dimensions connecting isolated footings under eccentric loading on settlement and horizontal displacement as well as bending moment and shear force. The investigated program consists of eccentric footings connected with tie beams with different thicknesses and widths. The details and variation of the selected parameters were presented. Results: It was concluded that, the settlement and horizontal displacement values in both directions as well the contact pressure values decrease with increasing the thickness and widths of tie beam. However, the values of bending moment and shear forces along axis decreases with increasing the dimensions of tie beam. In addition, the distribution of stresses under footing along axis s decreases with increasing both of tie beam thickness and width. Conclusion: However, the differential settlements of footings decrease with increasing tie beam dimensions.

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