不同加载方式下路堤沉降性状与预测模型研究
CHARACTERISTICS OF EMBANKMENT SETTLEMENT AND ITS PREDICTION MODEL UNDER DIFFERENT LOADING SEQUENCE
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摘要: 从考虑土体流变的本构关系出发 ,证明了瞬时加载、线性或者近似线性加载和分级加载情况下路堤沉降的性状 ,提出了从数学上能满足各自变形特征的预测模型 ,工程实例分析表明了在不同条件下采用不同模型的合理性和实用性Abstract: Based on the rheological stress-strain relationship of soil, the characteristics of the s~t curve of an embankment are analyzed under instant loading, linear or approximately linear loading and multi-stage loading. A prediction model for settlement under the above-mentioned three loading sequences is then developed. The case studies verify the applicability of this model.