Frames with Round Hollow Structural Section and W Shape Intentionally Eccentric Braces
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Bibliographic Details
| Author(s): |
María José Zamora Durán
(Universidad de Costa Rica, San José, Costa Rica)
Daniel Martínez Vargas (Universidad de Costa Rica, San José, Costa Rica) Andrés González Ureña (Universidad de Costa Rica, San José, Costa Rica) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024 | ||||
| Published in: | IABSE Congress San José 2024 | ||||
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| Page(s): | 1351-1358 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/sanjose.2024.1351 | ||||
| Abstract: |
Offsetting the axis of an otherwise conventional steel brace with respect to the forces’ line of action modifies its force-displacement response and brings about significant benefits for earthquake- resistant design. When used in multi-storey Frames with Intentionally Eccentric Braces (FIEBs), the adjustable eccentricity of Braces with Intentional Eccentricity (BIEs) grants a better control over the dynamic behaviour of the structure and reduces incidental overstrength. In this article, the suitability of round Hollow Structural Sections (HSS) and W shapes as bracing members in FIEBs is investigated. To this end, prototype buildings of varying height with round HSS and W shape-based FIEBs as seismic-force-resisting systems are designed and subjected to Non- Linear Response-History Analysis (NLRHA). The resulting buildings offer a satisfactory response to earthquake loading, indicating that the considered sections are apt for use as BIEs in FIEBs. |
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| Keywords: |
steel braced frames Frames with Intentionally Eccentric Braces (FIEBs) Braces with Intentional Eccentricity (BIEs) Earthquake-resistant Design Non-Linear Response-History Analysis
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