Seismic Design of Steel Plate Shear Wall Systems
Date Issued
2007
Date
2007
Author(s)
Li, Chao-Hiein
DOI
zh-TW
Abstract
In recent years, several researchers have confirmed that steel plate shear wall (SPSW) systems have the advantage of using a very small amount of steel while achieving significant lateral stiffness to resist horizontal earthquake forces. However, the capacity design of the boundary elements in the SPSW frames has not been fully developed. In addition, researches conducted on the narrow SPSW systems (large height-to-width ratio) are rather limited, even though the narrow SPSW system is more desirable for architectural demand.
In this research, a methodology for the capacity design of the boundary elements in an SPSW system is proposed. The reliability of the proposed capacity design method is verified by a series of analytical and experimental studies. Seismic performance of the narrow SPSW frames is also investigated by the experiment tests.
The restrained SPSW system is constructed with horizontal restrainers made from a pair of steel tube members sandwich over the steel panel from the two sides using through bolts and pin-connected to the column flanges. Past research results have indicated that restrainers can successfully reduce the large out-of-plane displacement of the steel pate. In this research, extensive analytical studies demonstrate that the restrainers are able to reduce the flexural and shear demands of the columns and the axial load demand of the beams. It also promotes the development of the tension field action in the steel panel. Tests confirmed that properly using the horizontal restrainers, the size of the boundary elements can be reduced. Recommendation on the seismic design of the restrained SPSW systems is also provided in this research.
Four 2-story 2.14-meter wide by 6.5-meter narrow SPSW frames were constructed and cyclically tested to a roof drift of 0.05 radians in National Center for Research on Earthquake Engineering (NCREE). The low yield strength steel plates of 2.6mm were adopted for all four specimens. Two out of four SPSWs were constructed with horizontal restrainers. The key parameter of this series of tests is the size of the boundary elements of the specimens. Tests results confirm that the proposed capacity design method is effective in predicting the forming location and sequence of the plastic hinges. Tests also confirm that the restrained SPSW systems are more economical and have better seismic performance and serviceability than unrestrained SPSW systems.
Subjects
鋼板剪力牆
容量設計
束制型鋼板剪力牆
瘦長型鋼板剪力牆
耐震設計
steel plate shear wall
capacity design
restrained steel plate shear wall
seismic design
Narrow steel plate shear wall
Type
thesis
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