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高速公路软土路基工后沉降预测的新方法

薛祥, 宋连亮, 贾亮, 乐园, 葛虹

薛祥, 宋连亮, 贾亮, 乐园, 葛虹. 高速公路软土路基工后沉降预测的新方法[J]. 岩土工程学报, 2011, 33(zk1): 125-130.
引用本文: 薛祥, 宋连亮, 贾亮, 乐园, 葛虹. 高速公路软土路基工后沉降预测的新方法[J]. 岩土工程学报, 2011, 33(zk1): 125-130.
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XUE Xiang, SONG Lian-liang, JIA Liang, LE Yuan, GE Hong. New prediction method for post-construction settlement of soft-soil roadbed of expressway[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 125-130.
Citation: XUE Xiang, SONG Lian-liang, JIA Liang, LE Yuan, GE Hong. New prediction method for post-construction settlement of soft-soil roadbed of expressway[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(zk1): 125-130.
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高速公路软土路基工后沉降预测的新方法  English Version

  • 1. 北京市勘察设计研究院有限公司，北京 100022 ; 2. 北京市首都公路发展集团有限公司，北京 100071

详细信息
    作者简介:

    薛 祥 (1979 – ) ，男，贵州大方人，硕士，国家一级注册结构工程师，主要从事地下结构设计、岩土工程设计及咨询工作。

  • 中图分类号: TP183;U416.1

New prediction method for post-construction settlement of soft-soil roadbed of expressway

  • 1. BGI Engineering Consultants Ltd., Beijing 100022, China; 2. Beijing Capital Highway Development Co., Ltd., Beijing 100071, China

摘要

    摘要
  • 摘要: 路基沉降变形是造成道路工程事故的重大隐患。路基变形的控制是确定合理的路基施工速率、优化路基处理方案、提高填方路基的施工质量以及确保将来工程安全运营的重中之重。本文分别对路基沉降估算常见的方法：泊松模型、灰色模型、遗传算法、神经网络法、三点法、曲线拟合法、经验系数校正法及 SFIA 方法等方法进行了定性对比分析。最终将 SFIA 方法应用于京津二通道和首都机场二通道等实际工程，计算结果表明：采用模拟路基施工过程的分阶段计算、根据地基土模量在不同荷载阶段的变化、采用相应的非线性模量进行路基沉降计算的计算结果更接近工程真实值。
    Abstract: The post-construction settlement of soft-soil roadbed is a serious hidden trouble to expressway. It is critical to control the deformation of soft-soil roadbed to optimize the construction speed and roadbed plan, to improve the construction quality and to ensure the project operation. The common prediction methods for post-construction settlement of soft-soil roadbed of expressway are qualitatively compared and analyzed. These methods include the Poisson,s model, grey model, genetic algorithm, neural network method, three-point method, curve fitting method and SFIA method. Finally, the SFIA method is selected to calculate the settlements of the second expressway of Beijing to Tianjin and the second expressway of Beijing International Airport. The calculated results are close to the actual values. For prediction of the post-construction settlement, soft-soil roadbed of expressway the roadbed construction process should be simulated, and the nonlinear soil modulus should be employed according to different construction loads.
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    • 参考文献(10)
  • [1] 张砚霖 , 黎雪荣 , 李胜茂 , 等 . 2009-2012 年中国公路行业投资分析及前景预测报告 [R]. 北京 : 中投顾问 , 2009. (ZHANG Yan-shen, LI xue-rong, LI Sheng-mao, et al. A report of Chinese highway trade analysis and investment consultation from 2009 to 2012[R]. Beijing: CIConsulting, 2009. (in Chinese))
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出版历程
  • 收稿日期:  2011-04-28
  • 发布日期:  2011-11-30

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