| 基于AFSA-LSSVM的位移反分析方法研究 |
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| 引用本文： | 张凌然,徐卫亚,聂卫平,石崇,杨云浩.基于AFSA-LSSVM的位移反分析方法研究[J].水电能源科学,2011,29(4). |
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| 作者姓名： | 张凌然 徐卫亚 聂卫平 石崇 杨云浩 |
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| 作者单位： | 河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098;河海大学岩土工程科学研究所,江苏南京210098 |
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| 基金项目： | 国家自然科学基金资助项目(50911130366,50979030); 国家科技支撑计划基金资助项目(2008BAB29B01) |
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| 摘 要： | 以糯扎渡水电站工程为例,依据LSSVM原理构建了待反演参数与位移的预测模型,采用AFSA优化LSSVM模型参数提出基于AFSA-LSSVM的位移反分析方法,寻求预测位移值与监测位移值最接近的适应值,以获得最真实的待反演参数。结果表明,该方法较PSO-LSSVM能搜索到更优适应值,计算精度高,适用性较强。
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| 关 键 词： | 位移反分析 最小二乘支持向量机 鱼群算法 糯扎渡水电站 |
Research on Back Analysis Method of Displacement Based on AFSA-LSSVM |
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| ZHANG Lingran,XU Weiya,NIE Weiping,SHI Chong,YANG Yunhao.Research on Back Analysis Method of Displacement Based on AFSA-LSSVM[J].International Journal Hydroelectric Energy,2011,29(4). |
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| Authors: | ZHANG Lingran XU Weiya NIE Weiping SHI Chong YANG Yunhao |
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| Affiliation: | ZHANG Lingran1,2,XU Weiya1,NIE Weiping1,SHI Chong1,YANG Yunhao1,2 (1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China,2.Research Institute of Geotechnical Engineering,China) |
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| Abstract: | Taking Nuozhadu hydropower station project for an example,this paper proposes a forecasting model for inversion parameters and displacement based on LSSVM theory.And the AFSA method is applied to optimize parameters of the LSSVM model.Then back analysis of displacement is adopted with AFSA-LSSVM method.At the same time,the exact parametric inversion is obtained by seeking the fitness value which makes the forecasting displacement and monitoring displacement to be closed.The results show that the proposed me... |
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| Keywords: | back analysis of displacement least squares support vector machines artificial fish swarm algorithm Nuozhadu Hydropower station |
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