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Obras y proyectos

versión On-line ISSN 0718-2813

Resumen

FERNANDEZ, Ingrid et al. Dynamic analysis of a self-supported tower subjected to wind and seismic loadings. Obras y Proyectos [online]. 2018, n.23, pp.78-86. ISSN 0718-2813.  http://dx.doi.org/10.4067/s0718-28132018000100078.

Self-supporting towers are structures that require special attention under the dynamic actions generated by wind loads and seismic loads. Three approaches can be identified for the dynamic analysis of these structures: equivalent static methods, methods in the frequency domain and methods in the time domain. The development of computation in recent decades has made easier the applications of complex dynamic analysis methods, such as the time domain method, that can be solved by means of modal superposition or direct integration techniques. Given the coexistence in the literature of both techniques in the analysis of the self-supported towers, the present work aims to compare the response in terms of displacements and support reactions, of a self-supported tower under the action of dynamic loads of wind and earthquake, using modal superposition and direct integration. The results of the application of both techniques showed differences of less than 2% in the values of support reactions and the displacements of the tower. The procedure based on modal superposition is more efficient since it consumes less time and computational memory.

Palabras clave : dynamic analysis; wind; earthquake; direct integration; modal superposition.

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