Interference Effect on Force and Moment Coefficients on Tall Buildings

Abstract eng:
The information available regarding pressure and force coefficients in codes of practice of various countries on wind loads is generally for isolated buildings only. Presence of one or more buildings in the near vicinity alters wind pressures and thus forces on the building under consideration. This interference effect has been identified in early 30’s and since then many researchers have done both experimental and analytical studies of the interference effect among tall buildings. However, the results available in the research publications are yet not sufficient enough to prepare a set of recommendations for the designers to arrive at safe but economical design of tall buildings with respect to wind loads. Present paper describes the results of the experimental study carried out on rigid models of tall buildings in a boundary layer wind tunnel in order to study the interference effect. In all eight cases are studied in which interfering building models up to 3 in number are placed in different arrangements with respect to instrumented building model.

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