EFFECT OF THE OPENINGS IN THE STRENGTH AND STIFFNESS OF REINFORCED CONCRETE STRUCTURAL WALLS
Supervisor: Hiroshi FUKUYAMA
Country: El Salvador
The purpose of this investigation is to study the openings effect (windows, doors, etc) in the lateral strength and stiffness of RC structural walls. One solid wall and fifteen walls with different opening shapes and opening positions were modeled in Displacement Method Analyzer software (DIANA). The AIJ Guideline lateral strength equation, the ACI lateral strength equation and the strength reduction factors due to openings proposed by AIJ Standard Calculation were used to predict the lateral strengths of the fifteen walls with openings and the solid wall. Regarding the stiffness of walls with openings, it is calculated by means of two methods; one is a hand method procedure and the other one is using the stiffness reduction factor proposed in AIJ Standard Calculation. It was found that for those walls with same opening area but different opening positions, the seismic codes equations predict the same lateral strength capacity for them; on the other hand, the DIANA simulations show that such walls have different lateral strengths depending on the opening position even if the walls have the same opening area.
|Citation: ||Bulletin of IISEE, 42, 73-78.|