改进的灰色模型在软土路基沉降预测中的应用

Application of the Improved Gray Model in Subgrade Settlement Prediction of Soft Soil

路基的最终沉降变形对于确定铺筑路面时间、控制和安排施工进度以及路堤的安全与正常使用至关重要.GIM(1)模型是一种改进的GM(1,1)模型,采用等维GIM(1)模型对路基沉降进行了动态滚动预测,预测结果表明该模型精度能够满足工程需要.

It is important to determine the time for paving the pavement, controlling and arranging construction progress as well as safety and normal application of subgrade. GIM （ 1 ） , as a modified GM （ 1,1 ） model, predicts the settlement volume of subgrade dynamically and successively adopting equal-dimensional GIM （ 1 ） model. The prediction results reveals that precision of this model can meet the demand of engineering.