Journal of Seismology and Earthquake Engineering

Journal of Seismology and Earthquake Engineering

Fragility Curves for Vulnerability Assessment of Steel Moment-Resisting Frames Adjacent to Slopes

Document Type : Structural Earthquake Engineering

Authors
Jafar Mohamadi Tekantape
Gholam Reza Nouri
Ali Ghanbari
Amid Erfani
Kharazmi University
10.48303/jsee.2017.240754
Abstract
Observations from past earthquakes in addition to the results from analytical and numerical studies have shown that topographic irregularities significantly affect seismic site responses. Nonetheless, few studies have focused on the effect of topography amplification on the seismic vulnerability of buildings adjacent to slopes. In this study, using “match up damage index to damage thresholds” method introduced in HAZUS, fragility curves were developed for steel moment-resisting frames (SMRF) built adjacent to slopes. A two-dimensional finite-element model of the soil was implemented in ABAQUS to develop the fragility curves. Six models of combination of soil-structure and topography were considered. Furthermore, three types of buildings at different distances from the crest of the slope were considered. The results indicated that slope effect leads to up to 37% increase in the damage probability and illustrated that amplification factor had a range of 1.1 to 1.35, moreover, in comparison with slight states, the probability damage growth rate in moderate and extensive states are higher.
Keywords
Fragility Curve
Topography
Vulnerability
Earthquake
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  • Receive Date 01 March 2016
  • Accept Date 26 December 2020
  • Publish Date 01 January 2017