FREE VIBRATIONS OF STIFFENED COUPLED SHEAR WALLS ON FLEXIBLE FOUNDATIONS

In this study, a free vibration analysis of coupled shear walls is carried out by a simplifying method widely used in the past for the static analysis of similar structures. This method, called the continuous connection technique (CCT), comprises an elegant tool for the predesign computations related to the treatment of high-rise buildings. While the discrete structure is formulated as a continuous medium, the continuously distributed mass of the structure is discretized to a system of lumped masses for finding the corresponding flexibility matrix. After obtaining the standard frequency equation of the discrete system, the circular frequencies are determined in a straightforward manner and used to find the modes of vibration. Some comparisons are made between the results of the present method and those of a previous one, resulting in a perfect match of the two