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实测资料表明,在线性加载或近似线性加载情况下地基沉降—时间曲线呈S形,而MMF模型在曲线形式上也呈S形。鉴于两者的相似性,建立了地基全过程沉降预测的MMF模型,并通过工程实例对其进行了验证。结果表明:MMF沉降预测模型能够比较好的反映线性加载或近似线性加载条件下地基土体沉降量随时间的发展全过程,能够比较准确的预测地基沉降量,其预测精度要高于指数模型和双曲线模型,从而说明了该模型的合理性和可行性,可为今后地基沉降预测提供一定的参考。
The measured data show that the foundation settlement-time curve is S-shaped under linear loading or near-linear loading, while the MMF model is also S-shaped in the curve form. In view of the similarities between them, a MMF model of subsidence total settlement was established and validated by engineering examples. The results show that the MMF settlement prediction model can better reflect the whole process of the settlement of the subsoil with linear loading or near linear loading over time, and can predict the settlement of the foundation more accurately. The prediction accuracy of MMF is higher than that of the exponential model and Hyperbolic model, which shows the rationality and feasibility of the model, which can provide some reference for the foundation settlement prediction in the future.