Thesis
EXPERIMENTAL STUDY OF REPLACEABLE STEEL COUPLING BEAMS WITH REDUCED BEAM SECTIONS AND BOLTED CONNECTIONS AT THE BEAM-WALL INTERFACE
Washington State University
Master of Science (MS), Washington State University
01/2021
DOI:
https://doi.org/10.7273/000001847
Handle:
https://hdl.handle.net/2376/124793
Abstract
Coupled walls are a common lateral load resisting system found in many seismic regions. Coupling beams create a ductile link between the wall piers that increase the structures resistance to lateral forces and its ability to dissipate seismic energy. Replaceable steel coupling beams are an alternative to conventionally and diagonally reinforced concrete coupling beams and offer the advantage of improved constructability and post-earthquake reparability. Replaceable steel couplings beams have been studied in the past for shear yielding mechanisms. This research explores the concept of using flexure-yielding coupling beams with moment end-plate connections and reduced beam section cuts to reduce damage at the wall interface and further promote replaceability. Five two-third-scaled, cantilever steel coupling beams were tested under a fully reversed cyclic displacement protocol. The primary test variables were the RBS cut geometry, the utilization of a parallel steel coupling beams compared to a single steel coupling beam, and the moment end-plate connection to embedded connection. Coupling beams with RBS cuts showed deformation capacities of 8% and greater while the coupling beam without an RBS cut had a deformation capacity of 6%. Using RBS cuts within the parameters of AISC 358-16 resulted in the largest ductility. Lastly, it was determined that the moment end-plate connection design and detailing can have a significant effect on the beam stiffness.
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Details
- Title
- EXPERIMENTAL STUDY OF REPLACEABLE STEEL COUPLING BEAMS WITH REDUCED BEAM SECTIONS AND BOLTED CONNECTIONS AT THE BEAM-WALL INTERFACE
- Creators
- Colin Alec Lambie
- Contributors
- Adam Phillips (Advisor)Adam R Phillips (Committee Member)Chris Motter (Advisor)Chris J Motter (Committee Member)Dan J Dolan (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- Voiland College of Engineering and Architecture
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 65
- Identifiers
- 99900606549001842
- Language
- English
- Resource Type
- Thesis