| 隧洞工程区三维初始地应力场的回归分析 |
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| 引用本文： | 束加庆,任旭华,张继勋,焦红星. 隧洞工程区三维初始地应力场的回归分析[J]. 红水河, 2006, 25(1): 46-49,69 |
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| 作者姓名： | 束加庆 任旭华 张继勋 焦红星 |
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| 作者单位： | 1. 河海大学水利水电工程学院,江苏,南京,210098
2. 河海大学土木工程学院,江苏,南京,210098 |
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| 摘 要： | 根据实测地应力资料的三维有限元回归分析法是目前应用较多的初始地应力场数值分析方法之一。针对隧洞工程区特殊的地形条件（洞身很长），通过用梯形分布荷栽代替常用的均布荷载来模拟水平向构造应力来提高回归的精度，对锦屏隧洞区地应力场进行回归拟合计算，复相关系数由0.919提高到0.976，表明该方法能显著提高回归精度，可广泛用于工程实践中。
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| 关 键 词： | 初始地应力场 回归分析 三维有限元 隧洞工程区 |
| 文章编号： | 1001-408X（2006）01-0046-04 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2005-10-17 |
Regression Analysis of the 3D Initial Geostress Field of Tunnel Project Region |
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| SHU Jia-qing,REN Xu-hua,ZHANG Ji-xun,JIAO Hong-xing. Regression Analysis of the 3D Initial Geostress Field of Tunnel Project Region[J]. Hongshui River, 2006, 25(1): 46-49,69 |
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| Authors: | SHU Jia-qing REN Xu-hua ZHANG Ji-xun JIAO Hong-xing |
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| Affiliation: | 1. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 2. College of Civil Engineering, Hohai University, Nanjing 210098 ,China |
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| Abstract: | 3D FEM regression analysis based on the geostress data in situ measurement, one of the numerical analysis methods for initial geostress field, is widely used nowadays . Because of the special terrain condition (the long axes) in the tunnel project region, the method to adopt trapeziform distribution load instead of the common uniform load is used to simulate the horizontal tectonic stress so as to improve the regression precision. In the geo-stress field regression fit calculation of Jinping tunnel, the multiple correlation coefficient increases from 0. 919 to 0.976. It indicates that this method can improve the precision evidently, and so it can be widely used in the engineering practice. |
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| Keywords: | initial geo-stress field regression analysis 3D FEM tunnel project region |
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