Comparison of determination methods of site Rayleigh damping coefficients in seismic responses analysis of underground structures

XU Zi-gang; DU Xiu-li; XU Cheng-shun; ZHANG Chi-yu; JIANG Jia-wei

doi:10.16285/j.rsm.2018.1913

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Comparison of determination methods of site Rayleigh damping coefficients in seismic responses analysis of underground structures

更新时间：2026-06-25

- Comparison of determination methods of site Rayleigh damping coefficients in seismic responses analysis of underground structures
- Vol. 40, Issue 12, Pages: 4838-4847(2019)
- 作者机构：
  
  北京工业大学城市与工程安全减灾教育部重点实验室,北京,100124
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2018.1913
  CLC： TU435
- Online First：04 January 2020，
  
  Published：2019
- 稿件说明：
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XU Zi-gang, DU Xiu-li, XU Cheng-shun, et al. Comparison of determination methods of site Rayleigh damping coefficients in seismic responses analysis of underground structures[J]. 2019, 40(12): 4838-4847.
DOI：

XU Zi-gang, DU Xiu-li, XU Cheng-shun, et al. Comparison of determination methods of site Rayleigh damping coefficients in seismic responses analysis of underground structures[J]. 2019, 40(12): 4838-4847. DOI： 10.16285/j.rsm.2018.1913.

摘要

动力时程分析中，结构地震反应的计算精度很大程度上取决于瑞利阻尼系数的确定。通过对某一成层场地在不同地震动作用下的动力反应分析，比较了目前工程上常用瑞利阻尼构建方法的时域计算结果和频域等效线性化计算结果，探讨了由频域分析中的滞回阻尼比构建时域分析中瑞利阻尼系数的新方法。在此基础上，对比研究了不同瑞利阻尼构造方法对某单层双跨地下车站结构地震反应的影响。结果表明：对于场地地震反应而言，提出的瑞利阻尼系数的时域计算结果与频域解的平均误差最小；对于地下结构地震反应而言，改进完整形式瑞利阻尼系数的时域计算结果与该方法计算结果基本一致。提出的瑞利阻尼系数计算方法精度较高，操作简单，可在场地和地下结构地震反应分析中推广使用。

Abstract

The accuracy of the structural seismic responses largely depends on the calculation of the Rayleigh damping coefficients in the dynamic time and history analysis. By analyzing the seismic responses of a stratified site under different earthquake actions

the results in time domain and frequency domain based on commonly used damping coefficients are compared with each other. A new method for calculating Rayleigh damping coefficients for time domain analysis with hysteretic damping ratio is proposed. The influence of different calculation methods of Rayleigh damping coefficient on the seismic responses of a single-story two-span underground subway station is discussed based on the proposed method. The results show that the average error of the seismic responses of the site is minimum between the new method and the frequency domain method. The results of the modified full Rayleigh damping agree well with the new method for the seismic responses of the underground structure. The calculation method for Rayleigh damping coefficients proposed in this paper has the advantage of high precision and simple operation

can be widely used in seismic response analyses of site and underground structures.

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