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首页> 美国卫生研究院文献>Materials >A Three-Point Hyperbolic Combination Model for the Settlement Prediction of Subgrade Filled with Construction and Demolition Waste
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A Three-Point Hyperbolic Combination Model for the Settlement Prediction of Subgrade Filled with Construction and Demolition Waste

机译：三点双曲线组合模型的建筑和拆除废物填充路基沉降预测

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摘要

Using construction and demolition waste (CDW) as road subgrade filling materials is an excellent way to solve the disparity between increased demand and road construction aggregate shortages. However, a key quality control problem is predicting the subgrade settlement, primarily because the CDW subgrade settlement prediction methods are not yet mature. To go some way in overcoming this problem, in this paper we developed a three-point hyperbolic combination model to predict CDW subgrade settlement, in which three appropriate points for the measured settlement curve were selected in the prediction samples to improve the hyperbolic model. Then, common prediction models—namely, the hyperbolic model, the three-point model, and the Hushino model—were compared with the proposed combination model to assess its viability. Finally, the three-point hyperbolic combination prediction accuracy was analyzed for different start points and time intervals Δ . The analyses found that the proposed model was in good agreement with the measured data, had a high correlation coefficient, and had only small errors. However, the time interval needed to be greater than 80 days and the start point needed to be selected at the beginning of the stable post-filling period, that is, = 90–100 days. The application parameters were also determined to provide a reference for the large-scale application and settlement predictions of CDW subgrade.
机译：使用建筑和拆迁废料（CDW）作为道路路基填充材料是解决需求增加与道路建设总短缺之间差异的极好方法。但是，一个关键的质量控制问题是预测路基沉降，这主要是因为CDW路基沉降预测方法尚未成熟。为了解决该问题，本文开发了一种三点双曲线组合模型来预测CDW路基沉降，其中在预测样本中选择了三个用于测量沉降曲线的合适点来改进双曲线模型。然后，将常用的预测模型（即双曲线模型，三点模型和Hushino模型）与提出的组合模型进行比较，以评估其可行性。最后，针对不同的起点和时间间隔Δ分析了三点双曲线组合的预测精度。分析发现，提出的模型与实测数据吻合良好，相关系数高，误差小。但是，时间间隔必须大于80天，并且必须在稳定的后填充期开始时选择起点，即= 90-100天。还确定了应用参数，为CDW路基的大规模应用和沉降预测提供参考。

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