Research on Anti-Seismic Performances of Interlayer Isolation Structures With Lateral Stopping Viscoelastic Dampers

ZHAO Liju; WANG Shanku; WANG Xiaolin; GE Xinguang

doi:10.21656/1000-0887.440194

Volume 45 Issue 5

May 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(5): 582-593

ZHAO Liju, WANG Shanku, WANG Xiaolin, GE Xinguang. Research on Anti-Seismic Performances of Interlayer Isolation Structures With Lateral Stopping Viscoelastic Dampers[J]. Applied Mathematics and Mechanics, 2024, 45(5): 582-593. doi: 10.21656/1000-0887.440194

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Research on Anti-Seismic Performances of Interlayer Isolation Structures With Lateral Stopping Viscoelastic Dampers

doi: 10.21656/1000-0887.440194

1.
College of Architectural Engineering, Xinyang Vocational and Technical College, Xinyang, Henan 464000, P.R.China
2.
School of Civil Engineering and Architecture, Liuzhou Institute of Technology, Liuzhou, Guangxi 545004, P.R.China

Received Date: 2023-06-27
Rev Recd Date: 2024-02-26
Publish Date: 2024-05-01

Abstract

Abstract

Anti-seismic performances of the hybrid energy dissipation structure (HEDS) composed of an isolation interlayer with lateral stopping viscoelastic dampers (VEDs) under random excitation were systematically investigated. Firstly, the seismic motion equations for the HEDS subjected to the double-filtered white noise excitation (DFWNE) were established, and the filtering equation of the DFWNE was used to accurately transform the dynamic calculation of the HEDS based on the DFWNE into white noise excitation problems to be easily tackled with concise closed-form solutions. Secondly, based on the complex mode method and the properties of the Dirac function for white noise excitation, a concise closed-form solution of the variance and 0th-to 2nd-order spectral moments of the series of responses (structural displacements, interlayer displacements, and damper damping forces) of the HEDS, was derived. Finally, based on the verification of the correctness of the proposed closed solution through numerical examples, the influencing factors on the seismic performances of the HEDS were studied. The results show that, the structural responses of floors above the isolation layer increase with the stiffness of the isolation layer; while the damping parameter of the VED have different effects on the interlayer displacement and structural displacements of floors above the isolation layer, i.e., the structural displacement can reach the minimum under certain damping parameter of the VED, but the interlayer displacement increases with the damping parameter of the VED. This study can provide reference for the design of HEDSs.
- interlayer isolation,
- lateral stopping viscoelastic damper,
- filtering equation,
- concise closed-form solution,
- anti-seismic performance

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References(24)

References

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