高速公路软基沉降的幂多项式预测模型
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Power-polynomial Model’ Application in Expressway’settlement Prediction on Soft Ground
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    摘要:

    工后沉降是软土地区修建高速公路面临的主要问题。依据现场实测典型沉降-时间关系特性,基于Taylor展开原理提出软基沉降预测分析的幂多项式模型;通过相关公式推导获得参数求解方法,并对实测数据点数目的合理取值进行分析。结合广东省某高速公路软基现场监测结果,运用幂多项式模型对实测数据予以预测分析。研究结果表明:幂多项式模型可充分利用观测样本求解参数,采用较低阶数即可获得较高精度,从而更准确地反映软基工后沉降特征。

    Abstract:

    Post-construction settlement is one of the main issues for expressway construction in soft soil areas. Based on the characteristics of a typical settlement-time relationship, a power-polynomial model from Taylor series expression is proposed for prediction and analysis of the post-construction settlement on soft ground. The model parameters are obtained and the in-situ test data analyzed. With the field monitored settlement at a expressway in GuangDong,the power-polynomial model is applied to predict the settlement according to the in-situ data.The results show that the parameters of the power-polynomial model can be determined simply by using the in-situ data, the prediction have high precision, and the post-construction settlement on soft ground can be described.

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潘美萍. 高速公路软基沉降的幂多项式预测模型[J]. 科学技术与工程, 2010, (31): .
panmeiping. Power-polynomial Model’ Application in Expressway’settlement Prediction on Soft Ground[J]. Science Technology and Engineering,2010,(31).

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历史
  • 收稿日期:2010-08-06
  • 最后修改日期:2010-08-06
  • 录用日期:2010-08-19
  • 在线发布日期: 2010-09-29
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