| 双连拱隧道围岩变形有限元与BP神经网络耦合分析 |
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| 引用本文： | 张孟喜,李钢,冯建龙,贺小强.双连拱隧道围岩变形有限元与BP神经网络耦合分析[J].岩土力学,2008,29(5):1243-1248. |
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| 作者姓名： | 张孟喜 李钢 冯建龙 贺小强 |
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| 作者单位： | 上海大学,土木工程系,上海,200072 |
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| 基金项目： | 留学回国人员科研基金
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上海市教委资助项目 |
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| 摘 要： | 以浙江金(华)-丽(水)-温(州)高速公路永嘉鹿城段的红枫双连拱隧道为工程背景,建立了基于神经网络的连拱隧道围岩变形预测模型.利用施工过程中左洞量测的围岩变形进行反分析,确定出围岩的力学特性参数,再通过数值分析方法对隧道右洞围岩变形和稳定性做出合理的评价和符合实际的预测,从而更有效地对支护参数和施工方法进行反馈设计.通过预测值与实际监测值的比较可以看出,其预测精度满足岩土工程的要求,具有一定的工程意义.
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| 关 键 词： | 耦合分析 有限元 神经网络 变形预测 连拱隧道 反分析 双连拱隧道 围岩变形 有限元 神经网络 耦合分析 BP neural networks tunnel rocks surrounding analysis 工程意义 岩土工程 预测精度 比较 监测值 预测值 反馈设计 施工方法 支护参数 评价 |
| 文章编号： | 1000-7598-(2008)05-1243-06 |
| 收稿时间： | 2006-08-24 |
| 修稿时间： | 2006年8月24日 |
Coupling analysis of surrounding rocks in double-arch tunnel by FE and BP neural networks |
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| ZHANG Meng-xi,LI Gang,FENG Jian-long,HE Xiao-qiang.Coupling analysis of surrounding rocks in double-arch tunnel by FE and BP neural networks[J].Rock and Soil Mechanics,2008,29(5):1243-1248. |
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| Authors: | ZHANG Meng-xi LI Gang FENG Jian-long HE Xiao-qiang |
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| Institution: | Department of Civil Engineering, Shanghai University, Shanghai 200072, China |
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| Abstract: | A deformation prediction model of surrounding rocks in double-arch tunnel based on BP neural network was established with a practical project. Mechanical parameters of surrounding rocks were obtained by back analysis method based on measured data in left tunnel. Deformation prediction and stability analysis of surrounding rocks in right tunnel were carried out by finite element analysis. The proposed prediction model made feedback design on supporting parameters and construction method more effective. By Comparison, it is shown that the results of prediction are in good agreement with those measured in situ. It can meet the requirement of geotechnical engineering. |
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| Keywords: | coupling analysis finite element neural network deformation prediction double-arch tunnel back-analysis |
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