Identification of Existing Stress in Existing Civil Structures for Accurate Prediction of Structural Performance under Impending Extreme Winds

Abstract

To accurately predict structural performance under impending extreme winds, it is imperative to identify the existing stressing condition in critical structural components before a hazard (intrinsic stress, referred to as "existing stress" hereafter). The identified existing stress should be added onto the stress induced by future extreme winds in order to determine the real structural performance under these conditions. To identify the existing stress, a novel approach is proposed in this study based on the connection between the unknown existing stress-existing strain curve and the measured stress—strain curve. This approach takes advantage of the known strain information when the material yields. Therefore, an approach to determine when the material yields is also developed. The proposed identification approach does not require any information on previous loads or load effects. Two numerical simulations and one laboratory test are conducted to validate the proposed identification approach. The obtained results demonstrated that the proposed approach is able to identify the existing stress with high accuracy and can be potentially implemented in practical applications.

Department(s)

Civil, Architectural and Environmental Engineering

Research Center/Lab(s)

Center for High Performance Computing Research

Keywords and Phrases

Accurate Performance Prediction; Existing Stress Identification; Extreme Winds; Intrinsic Stress Identification; Strain Measurement

International Standard Serial Number (ISSN)

1369-4332

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 SAGE Publications Inc., All rights reserved.

Publication Date

01 Mar 2020

Link to Full Text

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