Vamvatsikos D., Aschheim M.A. (2014). Direct performance-based seismic design of structures using Yield Frequency Spectra. Proceedings of the 10th U.S. National Conference on Earthquake Engineering, Anchorage, AK, USA.
Vamvatsikos D., Aschheim M.A. (2014). Direct performance-based seismic design of structures using Yield Frequency Spectra. Proceedings of the 10th U.S. National Conference on Earthquake Engineering, Anchorage, AK, USA
Abstract | Yield Frequency Spectra (YFS) are employed to enable the direct design of a structure subject to a set of performance objectives. YFS offer a unique view of the entire solution space for structural performance. This is measured in terms of the mean annual frequency (MAF) of exceeding arbitrary ductility (or displacement) thresholds, versus the base shear strength of a structural system with given yield displacement and backbone capacity curve. Using publicly available software tools or closed-form solutions, YFS can be nearly instantaneously computed for any system whose performance is characterized by response quantities that can be satisfactorily approximated by an equivalent nonlinear single-degree-of-freedom oscillator. Thus, stated performance objectives can be directly related to the strength and stiffness of the structure. The combination of ductility (or displacement) demand and its mean annual frequency of exceedance that governs the design is readily determined, allowing a satisfactory design to be realized in a single step.
