长江科学院院报 ›› 2014, Vol. 31 ›› Issue (8): 73-76.DOI: 10.3969/j.issn.1001-5485.2014.08.0142014,31(08):73-76,81

• 岩土工程 • 上一篇    下一篇

基于Burgers模型的大型堆山工程沉降预测

邵勇1,2,阎长虹2,许宝田2   

  1. 1.连云港职业技术学院, 江苏 连云港 222006;
    2.南京大学 地球科学与工程学院, 南京 210093
  • 收稿日期:2013-06-09 修回日期:2014-08-12 出版日期:2014-08-01 发布日期:2014-08-12
  • 作者简介:邵 勇(1982-),男,江苏连云港人,讲师,博士,主要从事岩土工程方面的教学及科研工作,(电话)13851289149(电子信箱)silinfe@sina.com。
  • 基金资助:
    江苏省科技厅项目(BE2011772);教育部高等学校科技创新工程重大项目培育资金项目(708043)

Settlement Prediction for Large Heap Mountain ProjectBased on Burgers Model

SHAO Yong1,2, YAN Chang-hong2, XU Bao-tian2   

  1. 1.Lianyungang Technical College, Lianyungang 222006, China;
    2.Department of Earth Sciencesand Engineering, Nanjing University, Nanjing 210093, China
  • Received:2013-06-09 Revised:2014-08-12 Online:2014-08-01 Published:2014-08-12

摘要: 对镇江市堆山工程中的地基土进行了室内一维固结蠕变试验,发现其流变特征符合Burgers流变模型,再将模型的蠕变方程转化成沉降计算的经验模型。根据实测沉降数据对此经验模型进行拟合,得到模型参数,且拟合精度较高,不仅避免了流变模型参数反演的繁琐性,还可以提高预测模型的精度。最终将经验模型用于堆山工程的后续沉降预测,与其他预测方法比较发现,基于Burgers模型的沉降预测方法更接近工程实际,考虑土体的流变特性是必要的,也为类似工程提供参考。

关键词: 流变, Burgers模型, 堆山工程, 沉降预测

Abstract: One-dimensional indoor consolidation creep test was conducted for the foundation soil of heap mountain project in Zhenjiang city. It was found that the rheological characteristics of the soil is in line with Burgers rheological model. Then the creep equation was transformed to empirical model of settlement calculation. The empirical model was fitted according to the measured settlement data, and the fitting precision is high. It avoids tedious inversion of rheological model parameter, and also enhances the precision of prediction model. The empirical model was used to predict the subsequent settlement of the foundation. Results demonstrate that the empirical model based on Burgers model is closer to the actual situation compared with other prediction methods. It is necessary to consider the rheological properties of soil when calculating foundation settlement.

Key words: rheology, Burgers model, heap mountain project, settlement prediction

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