Dynamic Analysis of Non-Planar Coupled Shear Walls with Stiffeners using a Continuous Connection Method
The dynamic analysis of non-planar non-symmetrical coupled shear walls on a rigid foundation has been considered in this paper. The analysis deals with coupled shear walls with a finite number of stiffening beams, the properties of which vary from region to region along the height. In this study, Continuous Connection Method (CCM) and Vlasov's theory of thin-walled beams are employed to find the stiffness matrix of the structure. The system mass matrix has been found in the form of lumped masses at the heights where the unit forces have been applied. Following the free vibration analysis, uncoupled stiffness, damping and mass matrices have been found employing the mode superposition method. A time-history analysis has been carried out using Newmark numerical integration method to find the system displacement vector for every time step. Finally, a computer program has been prepared in Fortran language and an asymmetrical example has been solved. The results have been verified via comparisons with those of the SAP2000 structural analysis program using frame method and a perfect match has been observed. This method is an effective method in terms of simplicity of its data and extremely short computation time for the predesign of high-rise buildings.