A study on the evaluating equivalent damping and response modification factors of frames equipped by Pall Friction Dampers is presented. To do so, buildings with various stories were considered. Nonlinear and linear dynamic time history analysis has been performed to evaluate equivalent damping for Pall Friction Dampers. Ground motions with various frequency characteristics scaled with Iranian ...

In another work, the “open safe” of the HAZUS-MH methodology was cracked to create seismic vulnerability functions that honor all HAZUS-MH methodologies and data, yet that appear in the form of tables of mean casualty rates (indoor deaths and injuries as four fractions of total occupancy) versus a structure-independent intensity measure, in particular, Sa 0.3 sec,5% or Sa 1.0 sec,5% . In this w...

The second part of a seismic risk assessment study for the Iranian city Isfahan is presented, focusing on description hazard, analysis, and discussion results. This utilizes building exposure model, fragility vulnerability curves illustrated in companion paper. earthquake occurrence source model adopted based EMME14 hazard study. site effects accounting soil nonlinear behavior are modeled by me...

This study investigates the potential seismic risks of double fab structures uniquely seen in Taiwan’s semi-conductor industry. A typical eight-story double fab structure is considered as the object to explore the seismic vulnerability of such structural systems via computer simulation under realistic earthquake ground motion. As expected, excessive storydrifts are found to be focused on the cl...

Citation: Tesfamariam S and Goda K (2015) Seismic performance evaluation framework considering maximum and residual inter-story drift ratios: application to non-code conforming reinforced concrete buildings in Victoria, BC, Canada. Front. Built Environ. 1:18. doi: 10.3389/fbuil.2015.00018 seismic performance evaluation framework considering maximum and residual inter-story drift ratios: applica...

In last decades many strategies for seismic vulnerability mitigation of structures have been studied and experimented; in particular energy dissipation by external devices assumes a great importance for the relative simplicity and efficacy. Among all possible approaches the use of fluid viscous dampers are very interesting, because of their velocity-dependent behaviour and relatively low costs....

In this paper, the peak ground acceleration (PGA) over the bedrock is calculated by a probabilistic and deterministic seismic hazard assessment. An active fault map of the region is prepared. For this purpose, all active faults in a radius of 100 km from Amol city center are recognized and their seismic and rapture parameters are determined. Afterwards, for seismic hazard analysis, the seismic ...