Campus Units

Civil, Construction and Environmental Engineering, Aerospace Engineering

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

9-15-2019

Journal or Book Title

Engineering Structures

Volume

195

First Page

438

Last Page

451

DOI

10.1016/j.engstruct.2019.04.009

Abstract

The application of performance-based design (PBD) is gaining increasing interest in the wind engineering community. A popular design approach to minimize wind induced vibrations in flexible civil structures is to size structural stiffness and supplemental damping systems in order to restrict the motion to a given threshold for providing safety and comfort, while ensuring that structural components meet strength requirements. In this paper the PBD paradigm is extended to wind excited tall buildings equipped with motion control systems. The objective is to improve the design of damping systems under different wind events while considering maximum acceleration as performance measure. In addition, since the installation of damping devices implies additional costs (e.g., installation and maintenance costs) while it helps decreasing the costs associated with performance failure, a life-cycle analysis (LCA) is integrated in the PBD. In the LCA framework, the percentage of building occupants affected by discomfort and motion sickness caused by excessive wind-induced vibrations is considered to account for the consequences of different target performance levels. The developed PBD is applied to a 39-story building that has documented issues with excessive vibrations under wind events. The wind load is simulated as a multivariate stochastic process, in the time domain. Two passive vibration mitigation strategies are investigated: viscous and friction dampers, both designed to meet the target performance levels. LCA are conducted for the building equipped with each damper type, and benchmarked against the one without dampers. Results show that the PBD leads to a rational and economically effective approach for the design of the damping systems in wind excited tall buildings.

Research Focus Area

Structural Engineering, Construction Engineering and Management

Comments

This is a manuscript of an article published as Micheli, Laura, Alice Alipour, Simon Laflamme, and Partha Sarkar. "Performance-based design with life-cycle cost assessment for damping systems integrated in wind excited tall buildings." Engineering Structures 195 (2019): 438-451. DOI: 10.1016/j.engstruct.2019.04.009. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Ltd.

Language

en

File Format

application/pdf

Available for download on Monday, June 14, 2021

Published Version

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