Experimental study of cross stiffened steel plate shear wall with semi-rigid connected frame: Fid-Bau Portal

Experimental study of cross stiffened steel plate shear wall with semi-rigid connected frame

Guo, HongChao / Li, YanLong / Liang, Gang / Liu, YunHe

AbstractThere is complex interaction between the infill steel plate and frame edges in the steel plate shear wall structure. The bearing capacity and stiffness of SPSW structure not only depends on the section sizes of frame and wall, but also relates to the stiffness of joint connection. The beam-to-column connection is easy to construct using semi-rigid joints which enhances the deformation and energy dissipation capacities of SPSW structure and effectively avoids the brittle failure of traditional welded joint. Based on the pseudo static test of cross stiffened SPSW structure with semi-rigid connected frame, this paper analyzes the failure mode and energy dissipation mechanism of the structure, discusses the influence of joint connecting forms and arrangement of stiffeners on the seismic performance of the structure. According to the results, the effect of the beam-to-column connection stiffness on the bearing capacity of SPSW structure is small and the differences among the ultimate bearing capacities are less than 5%. When the inter-story displacement angle is 1/50, the ductility factor is between 3.69 and 4.4, which indicates that SPSW structure is good in plastic deformation capacity. The cross stiffeners divide the thin steel plate into small cell plates. By setting the cross stiffeners, the thin steel plate is divide into small cell plates, and mainly pattern of local buckling.

Highlights•Hysteresis of semi-rigid composite frame with cross stiffened steel plate shear walls was experimentally investigated.•The failure modes and bearing capacity of cross stiffened SPSW with different beam-column joint forms were compared.•Analyze the effect of arrangement form and numbers of stiffeners on SPSW structure performance.•The semi-rigid frame and the cross stiffened SPSW work together to provide higher safety margins.