土工基础

›› 2015, Vol. 29 ›› Issue (3): 145-148.

• 工程实录 • 上一篇    下一篇

改进的FOX一维大变形固结模型在软土路基沉降计算中的应用

李春玲,钱丽英,周献涛   

  1. (浙江省交通规划设计研究院，杭州 310006）
  • 收稿日期:2015-01-05 出版日期:2015-06-20 发布日期:2015-06-26
  • 作者简介:李春玲(1983-)，女，工程师,研究方向为岩土检测。

The Application of Fox's One-dimensional Large Strain Consolidation Model in Settlement Estimation for Embankment ConstrUction on Soft Soils

LI Chunling,QIAN Liying，ZHOU Xiantao
   

  1. (Zhejiang Provincial Institute of Communications Plan Design & Research, Hangzhou, 310006)
  • Received:2015-01-05 Online:2015-06-20 Published:2015-06-26

摘要： 我国分布有大量软土地基，尤其以江浙沿海一带分布更为广泛。在软土地基上修筑的路基产生较大的沉降变形，严重影响工程安全。因此，改进现有的地基沉降计算及预测方法，使沉降的计算值与实测值更接近，具有重要意义。以嘉兴至绍兴跨江通道南岸接线工程为背景，改进Fox一维大变形固结模型CS2，并编制FORTRAN计算程序。改进的CS2模型考虑了固结过程中土性参数的非线性变化，是一个计算软土路基沉降的非线性差分模型。通过模拟路堤填筑地基沉降固结过程，验证了该模型应用于软土路基沉降计算的适宜性。

关键词: 软土地基, 变形监测, 沉降计算

Abstract: With the rapid development of highway construction, soft soils are frequently encountered especially in coastal areas of Jiangsu and Zhejiang. Therefore, it is of great academic value and social benefit to improve the existing settlement calculation and forecast method, so that the estimated settlement is close to the actual measurement. Fox's onedimensional large strain consolidation model (CS2) was utilized to estimate the embankment settlement of the south bank connecting line of the bridge form Jiaxing to Shaoxing. The improved CS2 model accounts for the nonlinear change of parameters during the process of consolidation. The simulated roadbed consolidation settlement was validated by monitored settlement.

Key words: Soft Soil Roadbed, Deformation Monitoring, Settlement Calculations.