Thesis
The monotonic seismic response of light-frame wood shear walls with adhesive sheathing connectors
Washington State University
Master of Science (MS), Washington State University
2014
Handle:
https://hdl.handle.net/2376/104612
Abstract
The objective of this thesis is to characterize the non-linear behavior of light-frame wood shear walls with adhesive sheathing connectors subjected to lateral loads. In a traditional lightframe shear wall, the sheathing connector is the primary source of ductility for lateral loading. For typical wood light-frame construction, nails are used as the sheathing connector. Structural adhesives have been proposed as a substitute for nailed connectors because of their higher relative strength. However, because of their increased stiffness and reduced ductility, adhesives are not permitted to be used as a substitute for nails in regions of high seismic risk. Six different adhesives were proposed as potential substitutes for nails in light-frame wood buildings. The six adhesives were subjected to small scale tests to characterize their nonlinear properties. Only one of the six adhesives demonstrated inelastic behavior. Non-linear finite element models of light-frame wood shear walls were developed to generate load-displacement curves for an adhesive shear wall system (ASWS). In an effort to increase the ductility of the system, and therefore improve the system's seismic response, a high displacement friction anchorage system was proposed and investigated. A conceptual design of this system was postulated and a non-linear finite element model was developed to evaluate its performance. A simple building model was generated with the properties of the ASWS and the ASWS with friction anchors (ASWS-FA) applied as the lateral force resisting system. The simple building model was subjected to a linear-elastic modal analysis and a non-linear static pushover analysis. The results of both analyses were utilized to determine an approximate Seismic Response Modification Factor, R, for both systems. Approximate R-values for the ASWS and ASWS-FA were determined to be 2.0 and 6.0 respectively. In order for these systems to be considered for inclusion in Minimum Design Loads for Buildings and Other Structures ASCE 7- 10 (2011), a full FEMA P-695 study must be conducted.
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Details
- Title
- The monotonic seismic response of light-frame wood shear walls with adhesive sheathing connectors
- Creators
- Charles David Misner
- Contributors
- J. Daniel Dolan (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525382101842
- Language
- English
- Resource Type
- Thesis