Assessment and Application of Direct Displacement Based Design for Dual Frame–Wall Reinforced Concrete Buildings

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Addis Ababa University


Assessment and Application of Direct Displacement Based Design for Frame –Wall Reinforced Concrete Buildings Eskedar Kassahun Addis Ababa University, 2016 In this thesis work Direct Displacement Based Design method is assessed in dual frame-wall reinforced concrete building. Traditional forced based design method compared with this method applying to different case studies. The effect of frame shear ratio, base shear shared by the frame, when DDBD design method is applied is studied in detail by taking frame base shear ratio 25%, 40% and 60%, in terms of base shear and displacement of the building. Also the effect of presence and absence of connected link beam which directly has an effect on moment profile of the wall is studied. The effectiveness of the method has been tested by designing a set of case studies. Dual frame-wall building with story 4, 8, 12, 16 and 20 is taken as case studies. From the study the base shear calculated using DDBD is less than FBD in all case studies considered. In low rise building, with storey 4 in this study, the base shear increases as frame shear ratio increase. However in building with higher stories the base shear decrease as frame shear ratio increases. Similarly the storey shear obtained from DDBD is less than FBD in all case studies. Considering building with and without link beam the moment profile with link beam has low moment than that beam without link beam in all case studies.



Structural Engineering