| 某核电取水隧洞洞口段及洞口高边坡抗震稳定分析 |
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| 引用本文： | 白广斌,赵 杰,易 剑.某核电取水隧洞洞口段及洞口高边坡抗震稳定分析[J].岩土力学,2014,35(Z2):488-494. |
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| 作者姓名： | 白广斌 赵 杰 易 剑 |
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| 作者单位： | 1.大连理工大学 土木工程学院，辽宁 大连 116085；2.大连市建设工程劳动保险费用管理办公室，辽宁 大连 116001； 3.大连大学 土木工程技术研究与开发中心，辽宁 大连 116622 |
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| 基金项目： | 辽宁省教育厅科学技术研究项目(No. L2011216)；大连市科学技术基金(No. 2010J21DW013)。 |
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| 摘 要： | 针对某核电取水隧洞工程，采用非线性的动力分析方法，用Flac3D建立大型三维有限差分模型，模拟隧洞洞口段在场址时程地震波作用下的地震响应规律，同时通过建立隧洞洞口处回填高边坡的二维有限元模型，进行洞口边坡在地震动作用下的稳定性分析，得出其边坡滑动面位置和动力安全系数时程曲线。通过场址地震波的输入，探讨隧洞洞口及边坡的结构响应特点，得出隧洞洞口衬砌内力随地震波作用的时程变化曲线，绘制隧洞衬砌内力图，同时给出隧洞洞口段高边坡安全系数。分析结果表明，隧洞洞口抗震的薄弱部位位于隧洞拱肩及边墙位置。分析方法及结论对于隧洞的抗震设计具有一定的参考价值。
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| 关 键 词： | 洞口 高边坡 抗震 稳定性 核电 |
| 收稿时间： | 2014-03-26 |
Anti-seismic stability analysis of entrance and high slope of water tunnel for a nuclear power plant |
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| BAI Guang-bin,ZHAO Jie,YI Jian.Anti-seismic stability analysis of entrance and high slope of water tunnel for a nuclear power plant[J].Rock and Soil Mechanics,2014,35(Z2):488-494. |
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| Authors: | BAI Guang-bin ZHAO Jie YI Jian |
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| Institution: | 1. Institute of Civil Engineering, Dalian University of Technology, Dalian, Liaoning 116085, China; 2. Dalian Municipal Construction Engineering Labor Insurance Management Office, Dalian, Liaoning 116001, China; 3. Dalian University R&D Center of Civil Engineering Technology, Dalian University ,Dalian, Liaoning 116622, China |
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| Abstract: | For a nuclear power and water tunnel project, a large-scale three-dimensional finite difference Flac3D model is established to simulate the seismic response under the action of seismic waves schedule in tunnel portal section, adopting nonlinear dynamic analysis method. Simultaneously, two-dimensional finite element model of backfill high-slope is created for slope stability analysis of tunnel entrance under the action of earthquake ground motion to draw the sliding surface of slope position and dynamic time history curve of safety coefficient. Through the input of the site seismic wave and the investigation of the structure response characteristics of the tunnel entrance and slope, duration curve of tunnel lining force under seismic waves action and tunnel lining figure can be obtained. Meanwhile, high slope safety factor of tunnel can be given. The analytical results show that the seismic weak parts of the tunnel entrance are at tunnel spandrel and the sidewall. The analytical method and conclusions have a certain reference value for the seismic design of tunnels. |
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| Keywords: | tunnel entrance high slope seismic resistance stability nuclear power |
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