Windstorm Resilience of a 10-Story Steel Frame Office Building
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 4, Issue 3
Abstract
The windstorm resilience of a 10-story steel frame building is examined by adapting procedures and software initially developed for performance-based seismic engineering. Building vulnerability to wind was predicted using a nonlinear finite element model of the structure subjected to wind loads based on loads measured in wind tunnel tests of a small-scale model of the building. The model of the building structure was idealized using a concentrated plasticity approach, including both the main wind force resisting and gravity systems. Wind tunnel load records were modified to emulate the nonstationary effects of windstorms. Nonlinear response history analyses were used to calculate story drifts and roof and floor accelerations. The calculated values were then correlated to probable building damage using empirical fragility data of structural and nonstructural building components. Monte Carlo simulations of possible building response scenarios were run and the simulation results indicated that during service-level windstorms buildings were generally habitable. During extreme-level sustained windstorms, damage to cladding and a need for the repair of structural components, especially nonductile beam connections, was predicted.
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Acknowledgments
The author expresses his appreciation to the ASCE/SEI Ad-Hoc Wind Performance-Based Design Committee, chaired by Don Scott and co-chaired by Larry Griffis for their support, and to Finley Charney, chair of the Committee on Performance Based Wind Engineering Technical Committee in the ASCE Wind Engineering Division. This paper was based in part on recommendations from the ASCE/SEI-sponsored workshop on the Adaptation of Seismic Performance Assessment Procedures (FEMA P-58) for Performance-Based Wind Engineering of Buildings, held in Reston, Virginia, on August 31, 2015. Part of the study was presented at the ASCE 2016 Geo-Structures Congress. The opinions and recommendations expressed in this paper are those of the author and do not necessarily reflect the views of the Committee or the workshop participants.
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Information & Authors
Information
Published In
ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 4 • Issue 3 • September 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Jul 6, 2016
Accepted: Jan 8, 2018
Published online: Apr 24, 2018
Published in print: Sep 1, 2018
Discussion open until: Sep 24, 2018
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