摘要
依据高路堤填土施工期路基沉降实测资料,分别运用遗传算法和最小二乘法确定灰色GM(1,1)预测模型中的灰色参数a和u,然后据此预测路基后期任意时刻的沉降量及最终沉降量,通过与实测沉降资料做比较分析,表明采用遗传算法反演参数预测高路堤沉降具有比其它方法误差更小的特点,是一种较好的路基沉降预测方法,因此适宜于在高路堤的沉降预测中应用。
Based on the monitoring data of settlement during construction, two parameters of GM(1,1) model are determined using genetic inverse analysis method and least square method respectively. Then, the later settlement at any time and last settlement can be predicted. Application of genetic algorithm in back-analysis of parameter for predicting settlement of high embankment has a higher precision than other methods in comparison with the monitoring data and it is suitable for predicting the settlement of high embankment. Therefore, the method proposed here is practical and valuable.
出处
《长沙交通学院学报》
2004年第1期19-24,共6页
Journal of Changsha Communications University
关键词
遗传算法
反分析
高路堤
灰色预测
沉降
genetic algorithm
back-analysis
high embankment
gray prediction
settlement
