TY - JOUR
T1 - Performance assessment and prioritization of mitigation approaches for pre-seismic code structures
AU - Mwafy, Aman
AU - Elkholy, Said
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the United Arab Emirates University under research grants No. 31N227 and 31N132.
Publisher Copyright:
© The Author(s) 2016.
PY - 2017/6
Y1 - 2017/6
N2 - The selection of an efficient mitigation technique from a number of alternatives to reduce the seismic risk of pre-seismic code school buildings is the main focus of this study. An on-ground survey of the school building stock in a large study area that extends for 6000 km2 enabled the selection of four different benchmark structures. Detailed simulation models are developed for the selected benchmark buildings and 14 retrofit alternatives to define their performance criteria and assess their seismic vulnerability. The earthquake hazard of the study region is accounted for using a wide range of ground motions, representing two seismic scenarios pertinent to several medium seismicity regions. The relative seismic performance of pre-code buildings and different mitigation alternatives from a large number of dynamic response simulations up to collapse is described in terms of fragility curves as well as a proposed measure of response termed the overall performance factor. This measure of response along with the systematic seismic assessment approach adopted in this study enable prioritizing different retrofit alternatives based on their performance-to-cost ratios, which help to arrive at an efficient and cost-effective mitigation strategy for the implementation at the regional scale.
AB - The selection of an efficient mitigation technique from a number of alternatives to reduce the seismic risk of pre-seismic code school buildings is the main focus of this study. An on-ground survey of the school building stock in a large study area that extends for 6000 km2 enabled the selection of four different benchmark structures. Detailed simulation models are developed for the selected benchmark buildings and 14 retrofit alternatives to define their performance criteria and assess their seismic vulnerability. The earthquake hazard of the study region is accounted for using a wide range of ground motions, representing two seismic scenarios pertinent to several medium seismicity regions. The relative seismic performance of pre-code buildings and different mitigation alternatives from a large number of dynamic response simulations up to collapse is described in terms of fragility curves as well as a proposed measure of response termed the overall performance factor. This measure of response along with the systematic seismic assessment approach adopted in this study enable prioritizing different retrofit alternatives based on their performance-to-cost ratios, which help to arrive at an efficient and cost-effective mitigation strategy for the implementation at the regional scale.
KW - Dynamic response simulations
KW - Mitigation measures
KW - Pre-code reinforced concrete buildings
KW - Seismic performance
KW - Vulnerability assessment
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U2 - 10.1177/1369433216667188
DO - 10.1177/1369433216667188
M3 - Article
AN - SCOPUS:85021631504
SN - 1369-4332
VL - 20
SP - 917
EP - 939
JO - Advances in Structural Engineering
JF - Advances in Structural Engineering
IS - 6
ER -