| 基于GM（1，1）的组合灰色模型预测软基沉降 |
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| 作者姓名： | 周姗姗 施云燕 |
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| 作者单位： | 长安大学,汽车学院,西安,710064 |
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| 摘 要： | 以灰色系统理论为基础，建立了沉降预测的组合灰色模型，对一般灰色模型具有的无限增长特性进行了改进和修正。在求解过程中，采用spline插值函数对现场观测沉降数据进行插值变换生成等时距序列，并对沉降预测模型的初值进行了优化选择，以提高预测精度。运用MATLAB语言编制模型计算程序，通过沉降预测实例及后验差法检验模型精度，表明沉降预测的组合灰色模型预测精度较高，具有较强的适用性。
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| 关 键 词： | 组合灰色模型 沉降预测 最优初值 MATLAB 精度检验 |
The combination grey model for settlement prediction of soft foundation based on MATLAB |
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| Authors: | ZHOU Shan-shan SHI Yun-yan |
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| Institution: | ZHOU Shanshan ,SHI Yun -yan ( School of Automobile Chang＇ an University, Xi＇ an 710064) |
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| Abstract: | Based on the grey system theory, a combination grey model is established for settlement prediction, which can modify the infinite increase of the general grey model. A spline - interpolate function is used to transform the observation data of settlement to equal time - interval ; and select the optima initial value of the prediction model to correct prediction precision. By means of completing the model calculating code with MATLAB, the example and the precision of prediction model checking with posterior variance method shows that the prediction precision of combination grey model is better and has applicability. |
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| Keywords: | MATLAB |
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