Analysis of coupled shear wall in high-rise building with energy dissipation device

Abstract

This paper analyzes coupled shear wall structure with energy dissipation devices that are affected by different earthquakes to clarify the damping effectiveness of the solution using energy dissipation devices. To model the coupled shear wall with energy dissipation devices, the study uses the equivalent frame model according to the finite element method. Energy dissipation devices are attached to the middle section of the coupling beam, working according to the law of nonlinear hysteresis between the shear force and the relative displacement. To analyze the coupled shear wall structure with the above device assigned in the beam, the coupled shear wall calculation algorithm and the Analysis of the Frame with Damper (TTKGC) program are built based on the Matlab version of the programming language platform R2017b. Results of analysis of a 30-story coupled shear wall structure, with energy dissipation devices installed on all floors, with 4 earthquakes with different characteristics, show that the solution of using energy dissipation devices is effective in reducing high vibration when the structure is affected by an earthquake. Through the survey parameters: peak lateral displacement, peak floor acceleration, interstory drift ratio, the analysis results show the decrease in survey values compared to the case where no energy dissipation devices and placing 30 devices reached from 26 % to 46 %.

Keywords: Coupled shear wall; coupling beam; energy dissipation device; seismic design.