Performance Assessment of an Existing 47-Story High-Rise Building under Extreme Wind Loads
Publication: Journal of Structural Engineering
Volume 145, Issue 1
Abstract
This paper presents a wind performance–based evaluation of an existing 47-story steel moment frame high-rise building designed and built in the early 1970s according to the Houston Building Code in effect at the time with limited wind design criteria (strength requirement under factored wind loads, but no serviceability requirements considered) and no seismic design criteria. The building survived Hurricane Alicia (a Category-3 storm, 1983) without significant structural damage. The nonlinear dynamic response of the building to different wind hazard levels was evaluated by developing a 3D nonlinear finite-element model and using an incremental dynamic analysis (IDA) approach. Using results obtained from the IDA study and using wind performance criteria currently in practice, a wind performance assessment was carried out by evaluating the estimated performance levels as a function of basic wind speed. The results of this study indicated a surprisingly robust lateral capacity associated with the structural nonlinearity that occurred, but confirmed the existence of unacceptable serviceability performance under various levels of wind loading.
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Acknowledgments
The authors would like to sincerely thank Dr. Finely Charney and Dr. Johnn Judd for their thoughtful and helpful comments, which greatly contributed to this research effort. The authors would also like to thank Rowan Williams Davies & Irwin Inc. (RWDI) for providing the results of their extreme wind analysis for Houston upon which the 1-year wind speed of (62 mph) was based.
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©2018 American Society of Civil Engineers.
History
Received: Jan 16, 2017
Accepted: Jul 5, 2018
Published online: Oct 31, 2018
Published in print: Jan 1, 2019
Discussion open until: Mar 31, 2019
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