| 基于饱和曲线法的地基沉降全过程预测 |
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| 引用本文： | 方薇,陈向阳.基于饱和曲线法的地基沉降全过程预测[J].工程地质学报(英文版),2014,22(6):1066-1070. |
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| 作者姓名： | 方薇 陈向阳 |
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| 作者单位： | 道路灾变防治及交通安全教育部工程研究中心 长沙 410004 |
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| 基金项目： | 国家自然科学基金，道路灾变防治及交通安全教育部工程研究中心开放基金项目(kfj130302)资助． |
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| 摘 要： | 针对S形沉降时程特征,提出了饱和曲线预测模型。首先,证明了该模型与S形沉降曲线的特点是相吻合的,包括有界性、单调递增性、存在反弯点,同时考察了模型中各参数改变对结果的影响; 其次,阐述了待定参数的获取方法和沉降预测步骤; 最后,通过多个工程实例对沉降预测模型的合理性进行了研究。算例表明,饱和曲线预测模型可以有效地用于加载全过程的沉降预测,具有适应性较广、精度较高、稳定性好的特点。与双曲线法、指数曲线法、星野法、生长曲线法相比而言,本文提出的沉降预测模型可靠性较高,具有一定的工程价值和应用前景。
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| 关 键 词： | 饱和曲线 沉降 曲线拟合 地基 |
| 收稿时间： | 2013-10-14 |
SATURATION CURVE METHOD FOR FOUNDATION SETTLEMENT PREDICTION |
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| FANG Wei,CHEN Xiangyang.SATURATION CURVE METHOD FOR FOUNDATION SETTLEMENT PREDICTION[J].Journal of Engineering Geology,2014,22(6):1066-1070. |
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| Authors: | FANG Wei CHEN Xiangyang |
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| Institution: | Engineering Research Center of Catastrophic Prophylaxis and Treatment of Road & Traffic Safety, Ministry of Education, Changsha 410004 |
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| Abstract: | Saturation curve model is proposed to satisfy the characteristics of S-style settlement process. Firstly, it is improved that the suggested model owns the same properties with S-style settlement process. The properties include boundedly convergent, monotonically increasing and inflection point existing. Meanwhile, influence of parameters is analyzed. Subsequently, parameter acquisition method and settlement prediction procedure are clarified. Finally, the rationality of given model is evaluated by several examples. Results show that the saturation curve model is of good applicability, precision and stability, and can be applied to settlement prediction during the whole construction period. Comparing with the hyperbola method, exponential curve method, Hoshino method and logistic curve method, the suggested settlement prediction model is more reliable and thus possesses a momentous engineering value and spreading significance. |
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| Keywords: | Saturation curve Settlement Curve fitting Foundation |
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