高速拓宽软土路基差异沉降数值计算及监测分析

谭儒蛟 李明生 张建根 徐文杰

谭儒蛟, 李明生, 张建根, 徐文杰. 2012: 高速拓宽软土路基差异沉降数值计算及监测分析. 工程地质学报, 20(3): 447-452.
引用本文: 谭儒蛟, 李明生, 张建根, 徐文杰. 2012: 高速拓宽软土路基差异沉降数值计算及监测分析. 工程地质学报, 20(3): 447-452.
TAN Rujiao, LI Mingsheng, ZHANG Jiangen, XU Wenjie. 2012: NUMERICAL CALCULATION AND MONITORING ANALYSIS ON DIFFERENTIAL SETTLEMENTS OF SOFT SOIL SUBGRADE IN EXPRESSWAY EXTENSION PROJECT. JOURNAL OF ENGINEERING GEOLOGY, 20(3): 447-452.
Citation: TAN Rujiao, LI Mingsheng, ZHANG Jiangen, XU Wenjie. 2012: NUMERICAL CALCULATION AND MONITORING ANALYSIS ON DIFFERENTIAL SETTLEMENTS OF SOFT SOIL SUBGRADE IN EXPRESSWAY EXTENSION PROJECT. JOURNAL OF ENGINEERING GEOLOGY, 20(3): 447-452.

高速拓宽软土路基差异沉降数值计算及监测分析

详细信息
  • 中图分类号: TU47

NUMERICAL CALCULATION AND MONITORING ANALYSIS ON DIFFERENTIAL SETTLEMENTS OF SOFT SOIL SUBGRADE IN EXPRESSWAY EXTENSION PROJECT

  • 摘要: 路基差异沉降控制是软土地区高速拓宽工程中的关键性技术问题之一,本文以北方某高速拓宽工程的试验段为例,运用ABAQUS软件进行了拓宽软土路基变形的有限元数值计算,并与路基现场变形监测数据进行对比分析,数值计算与实测结果基本吻合,结论一致地反映了路堤填筑初始阶段新路基的沉降速率较大,旧路基在填筑后期才产生较明显的附加沉降变形; 路基变形在拓宽侧呈现明显的"沉降盆"效应,新、旧路基的差异沉降是造成路基路面纵裂的主要因素; 桩端地基土呈现出较明显的侧向挤压效应,则表明采用带帽PTC桩复合地基中用于减沉时,桩端应置于具有较高承载力的有效持力层上。
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出版历程
  • 收稿日期:  2011-11-02
  • 修回日期:  2012-04-12
  • 刊出日期:  2012-06-25

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