Plastic Deformation Analysis of a New Mega-Subcontrolled Structural System (MSCSS) Subjected to Seismic Excitation

Abstract

This paper seeks to examine the plastic deformation and seismic structural response of a mega-subcontrolled structural system (MSCSS) subjected to strong seismic excitations. Different MSCSS configurations were modeled with nonlinear finite elements, and nonlinear dynamic analyses were performed to examine their behaviors. This paper introduces a novel and optimized MSCSS configuration, configuration 30, which demonstrates remarkable results for the reduction of plastic strain. Utilizing a steel plate shear wall enhances the seismic structural integrity of this system (SPSW). This configuration improved the mean equivalent plastic strain of columns and beams by 51% and 80%, respectively. In addition, a comparison between unstiffened and ring-shaped infill panels of SPSWs demonstrates that ring-shaped infill panels offer greater lateral stiffness and energy dissipation with a 44% reduction in maximum equivalent plastic strain. Compared to configuration 1, configuration 30 exhibited the most controlled structural response, as the minimum residual story drift improvement was 70% in the first, second, and third substructures, respectively, and the maximum coefficient of variation (COV) was 16% and 32% in the acceleration and displacement responses, respectively.

Identification of Structural Damage and Damping Performance of a Mega-Subcontrolled Structural System (MSCSS) Subjected to Seismic Action

“…An MSCSS with an SPSW has an RS-SPSW in the center of the structure. This model was proposed by Muhammad et al [19]. Figure A1 and Table A1 of Appendix A both show the infill panels' details along with the section members listed in Table 3.…”

“…The RS-SPSW improves the structure's controllability index by preventing out-of-plane buckling through ring deformation into an ellipse. Because the elongation of the ring during tension causes the diagonal connections to shrink, the web will not droop in a direction perpendicular to the field of tension [18][19][20].…”

Smart Tech 4.0 in the Built Environment: Applications of Disruptive Digital Technologies in Smart Cities, Construction, and Real Estate

“…Shahzad et al [15] examined the plastic deformation and seismic structural response of a mega-sub controlled structural system (MSCSS). The authors used nonlinear finite elements and dynamic analyses to examine the structural behavior using the MSCSS configuration that improved the mean equivalent plastic strain of columns and beams by 51% and 80% and reduced in maximum equivalent plastic strain by 44%.…”