Design for Lateral Loads/Systems

Single Abstract

342094 - Experimental Studies on Channel-Stiffened Steel Plate Shear Walls

Saturday, April 21
10:00 AM - 11:30 AM
Location: 204AB

Steel plate shear wall (SPSW), which commonly consists of an unstiffened slender wall panel inside a steel boundary frame, is known as an effective lateral force resisting system in high seismic zones. However, in accelerated construction of high-rise buildings, gravity loads will inevitably be transferred to the wall panel and causing elastic buckling, since it is impractical to fasten all the wall panels to the boundary frame in the last step. In order to avoid buckling of slender wall panels under gravity or in serviceability limit states, channel stiffeners are attached to the wall on one side, with both toes welded to the wall surface to form a closed section and provide higher out-of-plane and torsional constraints. This paper presented experimental research on channel-stiffened steel plate shear walls as a new type of steel plate shear wall system. Cyclic quasi-static tests were conducted on four 1/3-scale single-bay specimens, including two two-story specimens without gravity load effects and two single-story specimens with gravity load effects. All specimens showed highly ductile behavior and stable cyclic post-buckling performance, and could tolerate 3.5% to 4.5% story drifts. Compared with unstiffened SPSWs, the channel stiffened steel plate shear walls could have higher lateral strength and significantly higher lateral stiffness, improved hysteretic behavior, especially when the gravity load effects were considered. Recommendations on seismic design of stiffened SPSWs were also proposed.

Qiuhong Zhao

Professor
Civil Engineering Department, Tianjin University, China

n/a

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Send Email for Qiuhong Zhao

Jing Qiu

Civil Engineering Department, Tianjin University, China

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Presentation(s):

Send Email for Jing Qiu


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342094 - Experimental Studies on Channel-Stiffened Steel Plate Shear Walls



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