Simplified analysis of cable-stayed bridges with longitudinal viscous dampers
Engineering, Construction and Architectural Management
ISSN: 0969-9988
Article publication date: 30 July 2020
Issue publication date: 21 September 2020
Abstract
Purpose
Viscous dampers are commonly used in large span cable-stayed bridges to mitigate seismic effects and have achieved great success.
Design/methodology/approach
However, the nonlinear analysis on damper parameters is usually computational intensive and nonobjective. To address these issues, this paper proposes a simplified method to determine the viscous damper parameters for double-tower cable-stayed bridges. An empirical formula of the equivalent damping ratio of viscous dampers is established through decoupling nonclassical damping structures and linearization of nonlinear viscous dampers. Shaking table tests are conducted to verify the feasibility of the proposed method. Moreover, this simplified method has been proved in long-span cable-stayed bridges.
Findings
The feasibility of this method is verified by the simplified model shaking table test. This simplified method for determining the parameters of viscous dampers is verified in cable-stayed bridges with different spans.
Originality/value
This simplified method has been validated in cable-stayed bridges with various spans.
Keywords
Acknowledgements
The authors are grateful for financial support received in part from the Fujian Provincial Department of Science and Technology under Fujian Natural Science Foundation Project 2017J01698 and Natural Science Foundation of China (No. E51508102). The authors also acknowledge the help of Zhenzheng Fang, Ai Qi and Zhen Lin for the execution of the shaking table tests.
Citation
Li, X., Li, J., Zhang, X., Gao, J. and Zhang, C. (2020), "Simplified analysis of cable-stayed bridges with longitudinal viscous dampers", Engineering, Construction and Architectural Management, Vol. 27 No. 8, pp. 1993-2022. https://doi.org/10.1108/ECAM-07-2019-0400
Publisher
:Emerald Publishing Limited
Copyright © 2020, Emerald Publishing Limited