Browsing by Author "Metasebia, Dabi"

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Multi-objective Optimization of Post-tensioned Pedestrian Bridge
    (Addis Ababa University, 2021-09) Metasebia, Dabi; Bedilu, Habte (PhD)
    Multi-objective design optimization of post-tensioned box girder pedestrian bridge is presented in this study. The proposed design optimization incorporates some behavior and side constraints specified by the AASHTO Standard specifications. Multi-objective optimization is performed to minimize the cost and maximize the safety factor for the ultimate limit states. Considering stress and deflection limits as design constraints, and geometrical dimensions of the box-girder and shear reinforcements as design variables. Additionally, application of MATLAB routine gamultiobj algorithm for the design of posttensioned pedestrian bridge is presented, and a set of solutions in the pareto front are illustrated in graphical format. Then multi-criteria decision analysis method named TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) is used to determine the single optimal result from the Pareto set solutions by giving weight to the objective functions