| 李家峡拱坝坝体弹性模量及基岩变形模量的反演 |
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| 引用本文： | 刘健,练继建. 李家峡拱坝坝体弹性模量及基岩变形模量的反演[J]. 岩石力学与工程学报, 2005, 24(24): 4466-4471 |
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| 作者姓名： | 刘健 练继建 |
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| 作者单位： | 1. 天津大学,建筑工程学院,天津,300072;山东大学,土建与水利学院,山东,济南,250061
2. 天津大学,建筑工程学院,天津,300072 |
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| 摘 要： | 根据实际情况建立了李家峡水电站的三维有限元模型以对大坝的工作状态进行安全监控。同时,根据不同工况下坝体实测位移相对值,用改进的BP网络来反演坝体弹性模量和基岩变形模量,可为计算模型提供更准确的参数,对大坝的安全状态做出准确评价。所用的方法也为其他物理力学参数的反演提供了有效的思路和方法。
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| 关 键 词： | 水利工程 拱坝 弹性模量 变形模量 反演 BP神经网络 李家峡水电站 |
| 文章编号： | 1000-6915（2005）24-4466-06 |
| 收稿时间： | 2004-07-23 |
| 修稿时间： | 2004-07-232004-09-28 |
BACK ANALYSIS OF ELASTIC MODULUS OF LIJIAXIA ARCH CONCRETE DAM AND DEFORMATION MODULUS OF ITS FOUNDATION |
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| LIU Jian,LIAN Ji-jian. BACK ANALYSIS OF ELASTIC MODULUS OF LIJIAXIA ARCH CONCRETE DAM AND DEFORMATION MODULUS OF ITS FOUNDATION[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(24): 4466-4471 |
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| Authors: | LIU Jian LIAN Ji-jian |
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| Affiliation: | 1. School of Civil Engineering, Tianjin University, Tianjin 300072, China; 2. School of Civil Engineering, Shandong University, Jinan 250061, China |
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| Abstract: | Three-dimensional finite element model of Lijiaxia Hydropower Station is established to monitor operation condition of the arch dam.Based on prototype observation data,an improved back propagation(BP) neural network is applied to calculate elastic modulus of arch concrete dam for Lijiaxia Hydropower Station and deformation modulus of its foundation.This method can provide precise parameters for the calculation of the model,and can make a precise evaluation on the safety condition of dam.It can also provide a new way to the back analysis of other physico-mechanical parameters. |
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| Keywords: | hydraulic engineering arch dam elastic modulus deformation modulus back analysis back propagation(BP) neural network Lijiaxia Hydropower Station |
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