Parametric Optimization of Inclined Viscous Dampers for Cable-Stayed Bridge Based on Seismic Vulnerability

被引：0
|
作者：
Ma Z.-Q. [1 ]
Ma C.-F. [2 ]
Su R.-H. [3 ]
Chen L. [3 ]
Feng H. [2 ]
机构：
[1] School of Civil Engineering, Tongji University, Shanghai
[2] State Key Laboratory for Health and Safety of Bridge Structures, Wuhan
[3] School of Hydraulic and Civil Engineering, Hefei University of Technology, Hefei
来源：
Bridge Construction | 2023年 / 53卷 / 01期
关键词：
cable-stayed bridge; finite element method; full probability theory; inclined viscous damper; parametric optimization; seismic vulnerability analysis;
D O I：
10.20051/j.issn.1003-4722.2023.01.007
中图分类号：
学科分类号：
摘要：
To obtain the reasonable parameters of inclined viscous dampers for the long-span cable-stayed bridge, a seismic vulnerability analysis method that is developed based on the full probability theory is proposed. In this method, the random distribution characteristics of the structural seismic responses of a cable-stayed bridge is comprehensively considered, and the seismic vulnerability surfaces of parameters of viscous dampers installed along the length and width of the cable-stayed bridge can be simultaneously established. With the minimum seismic vulnerability of a bridge as the objective function, the variation of vulnerability curves along the bridge length and width is analyzed and the parameters are optimized, based on which the reasonable parameters of the inclined viscous dampers are obtained. The method has been practiced in the parametric optimization design of inclined viscous dampers of the Second Wuhu Changjiang River Highway Bridge (with a main span of 806 m). It is shown that the seismic vulnerability analysis method for the cable-stayed bridge based on the full probability theory gives a comprehensive consideration of seismic responses of the bridge structure, and can be applied to perform parametric optimization design of the inclined viscous dampers in accordance with the design targets. In the Second Wuhu Changjiang River Highway Bridge, the viscous dampers incline a degree of 26. 3°to the deck, and the damping coefficient is 3 213 kN • (m/s)-0.26. © 2023 Wuhan Bridge Research Institute. All rights reserved.
引用
收藏
页码：48 / 54
页数：6
相关论文
共 14 条
  • [1] LI Ji-tao, YANG Qing-shan, LIU Yang-bing, Fragility Analysis ol Long Span Continuous Rigid Frame Bridge under Multi-Support Excitations, Journal ol Vibration and Shock, 32, 5, pp. 75-80, (2013)
  • [2] WANG Xiao-wei, YE Ai-jun, SHEN Xing, Et al., Fragility Analysis on Transversal Isolation System for Outer Piers of Long Span Bridges [J], Journal of Tongji University ( Nature Science), 44, 3, pp. 333-340, (2016)
  • [3] ZHU Yong, JING Guo-qiang, WU Xiao-bo, Et al., Vibration Damping Effect of Viscous Dampers under Combined Wind Loads and Random Traffic Flow, Bridge Construction, 50, 6, pp. 59-65, (2020)
  • [4] LYU Jiang, ZHANG Zhong-yong, SONG Teng- teng, Et al., Study and Application of a New-Type Multifunctional Viscous Damper, World Bridges, 48, 6, pp. 60-63, (2020)
  • [5] Zhang J, Huo Y L., Evaluating Effectiveness and Optimum Design of Isolation Devices for Highway Bridges Using the Fragility Function Method, Engineering Structures, 31, 8, pp. 1648-1660, (2009)
  • [6] Choi E, Desroches R, Nielson B., Seismic Fragility of Typical Bridges in Moderate Seismic Zones, Engineering Structures, 26, 2, pp. 187-199, (2004)
  • [7] ZHONG Jian, WAN Hua-ping, REN Wei-xin, Et al., Seismic Risk Analysis for Cable-Stayed Bridges Based on Total Probability Theorem, Journal of Vibration Engineering, 31, 4, pp. 654-661, (2018)
  • [8] Desroches R, Smith B., Shape Memory Alloys in Seismic Resistant Design and Retrofit
  • [9] A Critical Review of Their Potential and Limitations, Journal of Earthquake Engineering, 8, 3, pp. 415-429, (2004)
  • [10] Padgett J E, Desroches R., Methodology for the Development of Analytical Fragility Curves for Retrofitted Bridges, Earthquake Engineering &-Structural Dynamics, 37, 8, pp. 1157-1174, (2008)
12