A Simple Method for Static Analysis of Tubular High-Rise Buildings Using Timoshenko Beam Theory

The paper proposed the continuum model, known as Kwan model, for the analysis of highrise buildings, which can be used as an appropriate approximation of the overall behaviour of the structure. In the proposed method, a high-rise building was modelled as a cantilever beam. Initially, the structure model was analysed with the assumption of flexural behaviour based on Euler-Bernoulli Beam Theory, and the displacement of floors was calculated. Then, in order to consider the shear lag effects in the overall displacement of the structure, Timoshenko's beam model was studied and related relations were extracted. The formulas obtained for the framed tube system, modelled with the Kwan beam, were calculated and the lateral displacement equation was measured. To verify the results, numerical models were created in software (ETABS) and statically were analysed for lateral loading, and finally the results were compared with the results of the analytical results and the corresponding diagrams were presented.