The prescriptive design of the most widely used residential building code in the United States, the IRC, allows the use of partially restrained wood shear walls to resist wind and seismic loads. Wind load is the most common controlling lateral design load for these structures. In contrast, the complimenting building code, the IBC, requires either a restraining dead load or a mechanical hold down device to resist overturning. To prescribe a safe structure, it is important to know the effect of partial restraint on the overturning resistance of wood shear walls constructed in accordance with the IRC and equally important whether the partially restrained wood shear walls provide the same level of reliability as fully restrained wood shear walls for wind load. This is the focus of this research.
Twenty five Monotonic tests were conducted of 4’ x 8’ wood shear walls with five varying restraining methods (wall types). There were five sets of five wall types. One of the sets had only an anchor bolt, three sets had different dead loads with one anchor bolt, and one set had a mechanical hold down. The results of the test program were used to determine the partial restraint effect, create a nonlinear finite element model, and to determine the statistical data required to perform a Monte Carlo simulation of the wall behavior.
The Monte Carlo simulation result was used to calibrate a nonlinear partial restraint factor to a target reliability index of 3.25. The calibration was performed for both ASD and LRFD load combinations as required by the IBC. The research concludes with a closed-form solution, including the calibrated nonlinear partial restraint factor developed, to determine the unit shear capacity of a partially restrained or fully restrained (with dead load or mechanical hold down) wood shear wall constructed in accordance with the IRC by utilizing the fully restrained nominal unit shear values of AF&PA’s Special Design Provisions for Wind and Seismic.
|Commitee:||Eamon, Christopher, Li, Wen L., Wu, Hwai-Chung|
|School:||Wayne State University|
|School Location:||United States -- Michigan|
|Source:||DAI-B 73/07(E), Dissertation Abstracts International|
|Subjects:||Architectural, Civil engineering|
|Keywords:||Partial restraint, Reliability, Wall bracing, Wood shear walls|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be