Back to Search
Start Over
Equivalent Lateral Force Design Method for Longitudinal Buckling-Restrained Braces in Bidirectional Ductile Diaphragms.
- Source :
-
Journal of Structural Engineering . Mar2024, Vol. 150 Issue 3, p1-18. 18p. - Publication Year :
- 2024
-
Abstract
- Bridge design specifications include design provisions for ductile diaphragms to resist seismic excitations perpendicular to a bridge's axis. Buckling restrained braces (BRBs) can conveniently be used for this purpose. Bidirectional ductile diaphragms expand the concept to resist all-direction seismic forces, and nonlinear inelastic response history analyses (NL-RHAs) can be used to show that satisfactory seismic performance objectives can be obtained using this concept. However, a simple design procedure is needed to address the design of the BRBs in the bridge longitudinal direction. As a first step, to fill that need for common multispan simply-supported bridges, a relatively simple-to-use equivalent lateral force (ELF) procedure has been developed on the basis of results from "optimal designs" obtained using NL-RHAs. Findings indicate that the proposed ELF design procedure leads to design that meet the target design objectives. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 07339445
- Volume :
- 150
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of Structural Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 174815078
- Full Text :
- https://doi.org/10.1061/JSENDH.STENG-12846