| 径向谐和激励下圆形隧道衬砌的动力稳定性 |
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| 引用本文： | 刘齐建,赵跃宇.径向谐和激励下圆形隧道衬砌的动力稳定性[J].湖南大学学报(自然科学版),2011,38(9):22-26. |
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| 作者姓名： | 刘齐建 赵跃宇 |
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| 作者单位： | 湖南大学土木工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50808075); 湖南省交通科技项目(200817) |
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| 摘 要： | 对径向谐和激励下圆形隧道的动力稳定性进行了研究,从动荷载下衬砌结构的振动方程出发,得到了隧道衬砌动力失稳临界频率计算公式,对可能影响隧道衬砌动力稳定性的因素进行了参数分析,探讨了系统参数,如地基土的性质、衬砌径厚比、外激励的性质以及系统的阻尼对衬砌动力稳定性的影响.计算结果表明:隧道周围土体的性质以及系统阻尼对衬砌的动...
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| 关 键 词： | 圆形隧道衬砌 动力稳定性 谐和激励 动力失稳区域 |
Dynamic Stability of Circular Tunnel Linings Subjected to Radial Harmonic Excitation |
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| LIU Qi -jian,ZHAO Yue -yu.Dynamic Stability of Circular Tunnel Linings Subjected to Radial Harmonic Excitation[J].Journal of Hunan University(Naturnal Science),2011,38(9):22-26. |
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| Authors: | LIU Qi -jian ZHAO Yue -yu |
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| Institution: | LIU Qi-jian,ZHAO Yue-yu(College of Civil Engineering,Hunan Univ,Changsha,Hunan 410082,China) |
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| Abstract: | An analytical procedure was presented to evaluate the dynamic stability of circular tunnel linings subjected to radial harmonic stresses.Considering the dynamic interaction between the linings and the surrounding soil,the calculation of critical exciting frequency of linings was derived.A parametric study was performed to investigate the effects of some key parameters of the linings-soil system on the dynamic stability of the circular linings,such as the foundation's properties,ratio of the lining's radius ... |
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| Keywords: | circular tunnel lining dynamic stability harmonic stresses dynamic instability area |
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