Prediction of input energy spectrum: attenuation models and velocity spectrum scaling

Alici, F. S.
Sucuoğlu, Haluk
Recent improvements in performance-based earthquake engineering require realistic description of seismic demands and accurate estimation of supplied capacities in terms of both forces and deformations. Energy based approaches have a significant advantage in performance assessment because excitation and response durations, accordingly energy absorption and dissipation characteristics, are directly considered whereas force and displacement-based procedures are based only on the maximum response parameters. Energy-based procedures mainly consist of the prediction of earthquake input energy imposed on a structural system during an earthquake and energy dissipation performance of the structure.


NURTUG, A; Sucuoğlu, Haluk (Wiley, 1995-09-01)
A simple analytical procedure is developed for calculating the seismic energy dissipated by a linear SDOF system under an earthquake ground excitation. The ground excitation is specified by its pseudo-velocity spectra and effective duration whereas the SDOF system is defined by its natural period of vibration and viscous damping ratio. However, the derived relationship for the energy dissipation demand under an earthquake excitation is sensitive neither to the viscous damping ratio nor the ductility ratio w...
An improvement to linear-elastic procedures for seismic performance assessment
Gunay, Mehmet Selim; Sucuoğlu, Haluk (Wiley, 2010-07-10)
An improved linear-elastic analysis procedure is developed in this paper as a simple approximate method for displacement-based seismic assessment of the existing buildings. The procedure is mainly based on reducing the stiffness of structural members that are expected to respond in the inelastic range in a single global iteration step. Modal spectral displacement demands are determined from the equal displacement rule. Response predictions obtained from the proposed procedure are evaluated comparatively by ...
Evaluation of displacement coefficient method for seismically retrofitted buildings with various ductility capacities
Dicleli, Murat (Wiley, 2014-07-25)
This research study is aimed at evaluating the accuracy of the displacement coefficient method (DCM) of FEMA 440 and associated nonlinear static procedure (NLSP) for actual buildings with soft story mechanism and various ductility capacities. The DCM and associated NLSP are evaluated using two existing seismically vulnerable buildings with soft story mechanism. The buildings are first retrofitted using a ductile steel-brace-link system to represent those with good ductility capacity and then retrofitted wit...
Generalized force vectors for multi-mode pushover analysis of torsionally coupled systems
Kaatsız, Kaan; Sucuoğlu, Haluk (Wiley, 2014-10-25)
A generalized multi-mode pushover analysis procedure was developed for estimating the maximum inelastic seismic response of symmetrical plan structures under earthquake ground excitations. Pushover analyses are conducted with story-specific generalized force vectors in this procedure, with contributions from all effective modes. Generalized pushover analysis procedure is extended to three-dimensional torsionally coupled systems in the presented study. Generalized force distributions are expressed as the com...
Seismic response assessment of a stiff structure
Kazaz, I; Yakut, Ahmet; Gulkan, P (Wiley, 2006-05-01)
Seismic response of a lightly reinforced stiff shear-wall structure subjected to ground motions grouped as near- or far-field according to their distance to causative faults is investigated. A model structure that had earlier been studied both experimentally and analytically in the context of a co-ordinated research project is re-examined. The structure is a five-storey lightly reinforced shear-wall model subjected analytically to 55 ground motion records from firm soil sites. Several response parameters ar...
Citation Formats
F. S. Alici and H. Sucuoğlu, “Prediction of input energy spectrum: attenuation models and velocity spectrum scaling,” EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, pp. 2137–2161, 2016, Accessed: 00, 2020. [Online]. Available: