Open Access

ARTICLE

Response Spectrum Analysis of 7-story Assembled Frame Structure with Energy Dissipation System

by Jin Zhao, Yi Wang^*, Zhengwei Ma

School of Civil and Transportation Engineering, Henan University of Urban Construction, Pingdingshan, 467000, China

* Corresponding Author: Yi Wang. Email:

Structural Durability & Health Monitoring 2023, 17(2), 159-173. https://doi.org/10.32604/sdhm.2023.09601

Received 20 December 2019; Accepted 13 January 2020; Issue published 09 May 2023

Abstract

Viscoelastic damper is an effective passive damping device, which can reduce the seismic response of the structure by increasing the damping and dissipating the vibration energy of structures. It has a wide application prospect in actual structural vibration control because of simple device and economical material. In view of the poor seismic behaviors of assembled frame structure connections, various energy dissipation devices are proposed to improve the seismic performance. The finite element numerical analysis method is adopted to analyze relevant energy dissipation structural parameters. The response spectrum of a 7-story assembled frame structure combined the ordinary steel support, ordinary viscoelastic damper, and viscoelastic damper with displacement amplification device is analyzed. The analysis results show that the mechanical behavior of assembled frame structure with ordinary steel supports are not significantly different from those without energy dissipation devices. The assembled frame structure with viscoelastic damper has better seismic performance and energy dissipation, especially for the viscoelastic damper with displacement amplification devices. The maximum value of inter-story displacement angle decreases by 32.24%; the maximum floor displacement decreases by 31.91%, and the base shear decreases by 13.62% compared with the assembled frame structures without energy dissipation devices. The results show that the seismic fortification ability of the structure is significantly improved, and the overall structure is more uniformly stressed. The damping structure with viscoelastic damper mainly reduces the dynamic response of the structure by increasing the damping coefficient, rather than by changing the natural vibration period of the structure. This paper provides an effective theoretical basis and reference for improving the energy dissipation system and the seismic performance of assembled frame structures.

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