Dynamic Similitude of Reduced-Size Friction Pendulum System on Top of a Multi-Tower High-Rise Structure

Abstract eng:
The self-centering steel plate shear wall (SC-SPSW) system is a new seismic load-resisting system that combines the steel plate shear wall (SPSW) and the post-tensioned (PT) beam-to-column connection. It has strong lateral load resistance, high energy dissipation and good recentering capability. Numerical model proposed in this research is for capturing the detailed behaviors of SC-SPSW and investigating the effects of various parameters on web plate and PT connection behaviors. The seismic responses including hysteresis response, the PT connection forces and the web plate shear resistance were compared with the experimental data to validate the modeling method. The results present a good agreement in the system performance and the numerical model is able to account for web plate tension field action including the web plate stress and strain variation. This study proves that the thicker web plate increases the PT boundary frame demands and decreases the system recentering capability. With the increasing web plate thickness, the compressive stress in web plate also increases. Furthermore, the compressive stress has an increasing trend after the web plate full yielding under the cyclic load. The research provides an effective modeling method for the parametric study of the SC-SPSW performance.

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