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朱才辉, 李宁, 刘明振, 魏弋峰. 吕梁机场黄土高填方地基工后沉降时空规律分析[J]. 岩土工程学报, 2013, 35(2): 293-301.
引用本文: 朱才辉, 李宁, 刘明振, 魏弋峰. 吕梁机场黄土高填方地基工后沉降时空规律分析[J]. 岩土工程学报, 2013, 35(2): 293-301.
Zhu Cai-hui, LI Ning, LIU Ming-zhen, WEI Yi-feng. Spatiotemporal laws of post-construction settlement of loess-filled foundation of Lüliang Airport[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(2): 293-301.
Citation: Zhu Cai-hui, LI Ning, LIU Ming-zhen, WEI Yi-feng. Spatiotemporal laws of post-construction settlement of loess-filled foundation of Lüliang Airport[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(2): 293-301.

吕梁机场黄土高填方地基工后沉降时空规律分析

Spatiotemporal laws of post-construction settlement of loess-filled foundation of Lüliang Airport

  • 摘要: 以吕梁机场高填方地基工后沉降监测结果为基础,对原地基及填筑体的工后沉降组分和产生不均匀沉降的原因进行了深入分析;量化分析了填土高度、填土速率、地基综合压实度、时间等因素对高填方工后沉降的影响,提出了基于应变速率的工后沉降递推分析法。结果表明:减小填土速率、适当增大地基综合压实度和降低填土高度都是减小工后沉降的有效措施,采用递推分析法,更能够近似描述施工工艺对工后沉降的影响。

     

    Abstract: Based on the monitoring results of the post-construction settlement of the loess-filled embankment foundation of Lüliang Airport, the components of the post-construction settlement of the high fill and the original foundation and the causes of uneven settlement are analyzed. The influence factors such as the height of fill, filling rate, general compaction degree and time on the post-construction settlement are quantitatively analyzed. The recursive analysis method based on the strain rate is proposed to predict the post-construction settlement. The results show that the decrease of the filling rate, appropriate increase of foundation compaction degree and decrease of filling height are the effective measures to reduce the post-construction settlement. The recursive analysis can more approximately describe the effect of construction technology on post-construction settlement.

     

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