| 公路类圆形隧道应力分布的时变反分析 |
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| 引用本文： | 唐光华.公路类圆形隧道应力分布的时变反分析[J].北方交通,2011(3). |
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| 作者姓名： | 唐光华 |
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| 作者单位： | 中冶京诚工程技术有限公司,北京,100053 |
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| 摘 要： | 隧道开挖过程中,隧洞围岩的应力应变场是时间和空间的函数.由应变构建的时变本构模型,运用位移反演方法,依据各步开挖后拱顶及水平收敛和深部测线量测位移,对隧道开挖引起的时变应变分布进行辨识.通过构造应变分布函数直接反演洞周应力分布的时变过程,尝试用增量法实现动载荷动态分布参数的反分析.
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| 关 键 词： | 隧道开挖 时变 反分析 应力分布 |
Time-varying Back Analysis of Stress Distribution of Highway Circular Tunnel |
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| Authors: | TANG Guang-hua |
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| Abstract: | During tunnel excavation,stress strain field of tunnel wall rock is a function of time and space.Time varying strain distribution caused by tunnel excavation is identified by time-varying constitutive model established by strain,using displacement inversion method,according to the displacement measured in vault and horizontal convergence and survey line in deep part after excavation of each step.Back analysis on dynamic distribution parameters of dynamic load was tried with incremental method through the ti... |
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| Keywords: | Tunnel excavation Time-varying Back analysis Stress distribution |
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