| 软土盾构隧道不均匀沉降预测的蚁群算法改进及参数选取 |
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| 引用本文： | 韦凯,宫全美,周顺华.软土盾构隧道不均匀沉降预测的蚁群算法改进及参数选取[J].岩石力学与工程学报,2011,30(Z1):3022-3031. |
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| 作者姓名： | 韦凯 宫全美 周顺华 |
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| 作者单位： | (1. 西南交通大学 牵引动力国家重点实验室，四川 成都 610031；2. 同济大学 道路与交通工程教育部重点实验室，上海 201804) |
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| 基金项目： | 国家高技术研究发展计划(863)项目(2007AA11Z116); 国家自然科学基金资助项目(50678131); 上海市博士后科研计划资助项目(10R21416300) |
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| 摘 要： | 根据实测沉降数据，分析软土盾构隧道不均匀沉降发展规律及其成因，获得规律性的主导信息，配以随机性较强的辅助信息，对蚁群算法预测模型进行完善，并结合实例初步探讨模型中部分参数的选取原则。研究结果表明：(1) 可认为实测数据中规律性的主导信息与纵向沉降槽内沉降显著位置的数量、累计沉降量及其与沉降非显著位置的间距有关；(2) 改进后的预测模型计算过程清晰、算式简单、使用方便，且预测精度更高，最大误差可控制在0.5%左右；(3) 信息素挥发系数和蚂蚁总数的匹配对预测结果精度的影响较大，而反映辅助信息的修正函数在无随机因素出现时其作用并不明显。
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| 关 键 词： | 土力学软土盾构隧道长期沉降不均匀沉降蚁群算法预测模型 |
| 收稿时间： | 2010-02-08; |
IMPROVEMENT OF ANT COLONY ALGORITHM FOR PREDICTING UNEVEN SETTLEMENTS OF SHIELD TUNNEL IN SOFT SOIL AND ITS PARAMETERS SELECTION |
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| WEI Kai,GONG Quanmei,ZHOU Shunhua.IMPROVEMENT OF ANT COLONY ALGORITHM FOR PREDICTING UNEVEN SETTLEMENTS OF SHIELD TUNNEL IN SOFT SOIL AND ITS PARAMETERS SELECTION[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(Z1):3022-3031. |
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| Authors: | WEI Kai GONG Quanmei ZHOU Shunhua |
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| Affiliation: | (1. State Key Laboratory of Traction Power，Southwest Jiaotong University，Chengdu，Sichuan 610031，China；;
2. Key Laboratory of Road and Traffic Engineering of Ministry of Education，Tongji University，Shanghai 201804，China) |
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| Abstract: | According to monitoring settlement data,the law of the uneven settlement of shield tunnel in soft soil and its causes are analyzed;and then the leading information with regulation is obtained.Together with the auxiliary information with great randomness,it can be used to improve the previous prediction model based on ant colony algorithm.The principle for selecting partial parameters in the prediction model is preliminarily conferred by an instance.The results show that:(1) The leading information with regu... |
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| Keywords: | soil mechanics soft soil shield tunnel long-term settlement uneven settlement ant colony algorithm prediction model |
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