Parametric Analysis on Hysteresis Performance and Restoring Force Model of LYP Steel Plate Shear Wall with Two-Side Conn
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International Journal of Steel Structures https://doi.org/10.1007/s13296-020-00400-x
Parametric Analysis on Hysteresis Performance and Restoring Force Model of LYP Steel Plate Shear Wall with Two‑Side Connections Yaqi Suo1 · Shenggang Fan1 · Chenxu Li1 · Shaoru Zeng1 · Chengliang Liu2 Received: 26 January 2020 / Accepted: 1 September 2020 © Korean Society of Steel Construction 2020
Abstract Parametric analysis on the hysteresis performance of the low yield point steel plate sheer wall (LYP SPSW) with three different stiffening configurations, including unstiffened, cross stiffened and diagonal stiffened, was conducted using the finite element models which have been verified by the test results. The parameters which have effects on the hysteretic behavior of LYP SPSW include ratio of height-to-thickness, stiffness ratio of stiffener, and the stiffness ratio of the edge member. The hysteretic curves, skeleton curves and viscous damping coefficient-displacement curves of SPSW with different stiffening configurations were obtained. According to the numerical results, it can be seen that the shear resistance and hysteretic performance of LYP SPSW decrease with the increase of the ratio of height-to-thickness. The energy dissipation capacity and shear capacity of LYP SPSW can be improved effectively by setting cross and diagonal stiffeners, but when the stiffness ratio of stiffener is greater than 10, the increase is no longer obvious. Furthermore, for steel plate shear walls without edge members, the diagonal cross-stiffening steel shear wall can achieve better energy consumption. For steel plate shear walls with edge members, when the ratio of height-to-thickness is less than 100, a better energy dissipation can be achieved by using cross stiffened steel plates; when the ratio of height-to-thickness is greater than or equal to 200, a better energy dissipation can be reflected by adopting cross stiffened steel plates. Finally, a restoring force model of the LYP SPSW with two-side connections is proposed. Keywords LYP steel plate shear wall · Two-side connection · Finite element analysis · Hysteresis performance · Parametric analysis · Restoring force model
1 Introduction Steel plate shear wall (SPSW) has been proposed as an efficient lateral load resisting system in high-rise buildings at the high seismic intensity areas for its large lateral stiffness, good ductility and energy dissipation capacity. The outof-plane buckling deformation will inevitably occur when SPSW is subjected to seismic force, and the oblique tension band formed at the same time which has greater postbuckling shear capacity and deformation capacity, but the * Shenggang Fan [email protected] 1
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, School of Civil Engineering, Southeast University, Jiulonghu Campus, Nanjing 211189, China
East China Architectural Design & Research Institute, Shanghai 200002, China
2
shear buckling deformation of the thin steel plate shear wall will have a certain im
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