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Earthquakes and Structures Volume 27, Number 1, July 2024 , pages 31-39 DOI: https://doi.org/10.12989/eas.2024.27.1.031 |
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A new base shear equation for reliability-based design of steel frames |
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Hakki Deniz Gül and Kivanç Taşkin
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| Abstract | ||
| The reliability-based seismic design of steel frames is a complex process that incorporates seismic demand with a structural capacity to attain safe buildings aligned with specified constraints. This paper introduces an efficient base shear force formulation to support the reliability-based design process of steel frames. The introduced base shear force equation combines the seismic demand statistics with the reliability objective to calculate a fictitious base shear force for linear static analysis. By concentrating on the seismic demand and promising to meet a certain level of reliability, the equation converts the reliabilitybased seismic design problem to a deterministic one. Two code-compliant real-size steel moment frames are developed according to different reliability objectives to demonstrate the competency of the proposed formula. The nonlinear dynamic analysis method is used to assess the seismic reliability of the constructed frames, and the numerical results validate the credibility of the suggested formulation. The base shear force calculation method regarding seismic reliability is the main finding of this study. The ease of use makes this approach a potent tool for design professionals and stakeholders to make rapid riskinformed decisions regarding steel moment frame design. | ||
| Key Words | ||
| base shear force; dynamic analysis; seismic fragility; seismic reliability; steel frame | ||
| Address | ||
| Department of Civil Engineering, Eskisehir Technical University, Eskisehir, 26555, Turkey | ||