Dominant pulse simulation of near fault ground motions

In this study, a new mathematical model is developed composed of two parts, including harmonic and polynomial expressions for simulating the dominant velocity pulse of near fault ground motions. Based on a proposed velocity function, the corresponding expressions for the ground acceleration and displacement time histories are also derived. The proposed model is then fitted using some selected pulse-like near fault ground motions in the Next Generation Attenuation (NGA) project library. The new model is not only simple in form but also simulates the long-period portion of actual velocity near fault records with a high level of precision. It is shown that the proposed model-based elastic response spectra are compatible with the near fault records in the neighborhood of the prevailing frequency of the pulse. The results indicate that the proposed model adequately simulates the components of the time histories. Finally, the energy of the proposed pulse was compared with the energy of the actual record to confirm the compatibility.     

Seismic resilience index for RC moment frames of school buildings using neuro-fuzzy approach

Natural Hazards - Ecosystem-based disaster risk reduction (Eco-DRR) is a concept of reducing the risk to natural hazards by avoiding the developments and settlements in disaster-prone areas by...     

Probabilistic residual capacity assessment of mainshock-damaged multi-span simply supported concrete girder bridges subjected to aftershocks

Bulletin of Earthquake Engineering - Since post-mainshock events following a major earthquake are likely to occur, it is imperative to have an understanding of the functionality status of...     

Evaluation of pounding effects between reinforced concrete frames subjected to far-field earthquakes in terms of damage index

Bulletin of Earthquake Engineering - In this paper, three different damage indexes were used to detect nonlinear damages in two adjacent Reinforced Concrete (RC) structures considering pounding...