Viscous Dampers Installation Arrangement and Hysteresis Curve Characteristics Research on the Mega-Sub Controlled Structure System

Li, Tao; Zhang, Xun An; Limazie, Toi

doi:10.4028/www.scientific.net/amm.71-78.1687

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…Furthermore, friction dampers were applied in a MSCSS substructure to improve the substructure's responses under wind and seismic excitations. [ 7,8 ] The most recent controlling mechanism investigated for the MSCSS involved optimizing the locations and parameters of viscous dampers. Additionally, rubber bearings were introduced at the tops of additional columns between the mega‐beams within the floor and the substructural components to reduce the substructure's response to seismic activity.…”

Section: Introductionmentioning

confidence: 99%

Response control analysis of a new mega‐subcontrolled structural system (MSCSS) under seismic excitation

Shahzad

Zhang

Wang

et al. 2022

Structural Design Tall Build

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The mega-subcontrolled structural system (MSCSS) was proposed in the past decade as a new construction technique for high-rise buildings because it showed an improved structural seismic response. However, research continues to focus on further increasing the response control ability, minimizing the cost, and improving the seismic performance of MSCSS. In this paper, a novel configuration named configuration 13 is proposed that incorporates an inverted V-bracing (chevron) along the height in the center of the structure, and a mid-story isolation system is situated under the first mega-beam. The response control analysis and dynamic characteristics of the novel MSCSS are studied based on the structural responses to seven seismic waves. This novel configuration shows a significant improvement of at least 30.58% in the structural acceleration response with an average overall improvement of 49.7% under an El Centro wave. Moreover, nonlinear dynamic analysis is performed under the same seven waves; the proposed configuration shows the maximum pseudo-spectral acceleration under the El Centro input at low frequencies, while under the Kobe wave, acceleration peaks also appear at higher frequencies. Furthermore, the Hilbert-Huang transform is also applied, confirming that the proposed MSCSS shows no sudden fluctuations in its structural response under seismic excitation.

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Section: Introductionmentioning

confidence: 99%

Response control analysis of a new mega‐subcontrolled structural system (MSCSS) under seismic excitation

Shahzad

Zhang

Wang

et al. 2022

Structural Design Tall Build

View full text Add to dashboard Cite

show abstract

“…The results showed that the MSCSS has a better structurally controlled response under seismic activity; i.e., it experiences less structural accelerations and displacements than previous models. A further application of friction dampers was made in an MSCSS substructure to improve the substructure's responses to wind and seismic excitations [14,15]. Recent research on an MSCSS viscous damper control mechanism involved optimizing damper locations and parameters.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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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.

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“…Taking this problem into account, many researchers have explored different ways to reduce the displacement of the sub structure. Li et al 4 introduced the viscous damper (VD) into the MSSS, studied the influence of the additional damping on the control performance of the MSSS, and concluded that appropriate VD will greatly mitigate the response of the sub structure as well as the mega frame. In addition, the friction damper and magnetorheological damper were also applied in the MSSS 5,6 .…”

Section: Introductionmentioning

confidence: 99%

Seismic analysis of the tuned‐inerter‐damper enhanced mega‐sub structure system

Liang

Yang

2020

Struct Control Health Monit

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Viscous Dampers Installation Arrangement and Hysteresis Curve Characteristics Research on the Mega-Sub Controlled Structure System

Cited by 5 publications

References 2 publications

Response control analysis of a new mega‐subcontrolled structural system (MSCSS) under seismic excitation

Response control analysis of a new mega‐subcontrolled structural system (MSCSS) under seismic excitation

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

Seismic analysis of the tuned‐inerter‐damper enhanced mega‐sub structure system

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