Thesis
Performance of log shear walls and lag screw connections subjected to monotonic and reverse-cyclic loading
Washington State University
Master of Science (MS), Washington State University
2007
Handle:
https://hdl.handle.net/2376/103744
Abstract
Lateral loads in low-rise buildings due to wind and earthquakes are primarily resisted by shear walls and horizontal diaphragms. Shear walls in wood frame construction consist primarily of framing members, sheathing, and sheathing-¬to-¬framing connectors, and are designed to resist shear force per unit length of the wall as required by calculated loads. Log home construction techniques differ from traditional wood frame construction in that walls are formed by stacking horizontal layers of logs, known as courses, where log cross-section, grade, and construction details vary among manufacturers. Methods and test data are needed to assist designers of log structures with accurately determining the behavior of log shear walls subjected to lateral loads. To address these needs, monotonic and reverse-cyclic log connection tests as well as monotonic and reverse-cyclic log shear wall tests at various aspect ratios were conducted using lag screws as a mechanical fastener. By providing designers and code officials with data on the performance of log shear walls, building regulatory barriers can be removed and markets can be opened to log structures in active seismic and high wind regions around the world. Analyses were conducted in order to assess the shear strength, stiffness, equivalent energy elastic plastic (EEEP) parameters and hysteretic behavior of the tested connections and log shear wall specimens. Testing also provided a basis for making recommendations to building designers regarding methods for estimating seismic design coefficients used to determine earthquake loads on buildings, which are lacking in current building codes.
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Details
- Title
- Performance of log shear walls and lag screw connections subjected to monotonic and reverse-cyclic loading
- Creators
- Drew Abram Graham
- Contributors
- David M. Carradine (Degree Supervisor)Donald A. Bender (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, Wash. :
- Identifiers
- 99900525031601842
- Language
- English
- Resource Type
- Thesis