基于GM(2,1)模型的基坑变形预测分析  

Pit Deformation Prediction Analysis Based on GM (2,1) Model

作　　者：卢志刚[1,2] 张建栋[2] 刘兴权[1] 

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410006 [2]江西理工大学应用科学学院,江西赣州341000

出　　处：《科技通报》2013年第7期103-108,共6页Bulletin of Science and Technology

基　　金：国家自然科学基金项目(D0108)

摘　　要：变形监测在基坑开挖工程中具有重要意义,如何对基坑前期变形监测成果进行分析,获取基坑变形的动态信息,是基坑安全施工过程中需要解决的迫切问题。利用基坑变形监测数据的灰色特征性,采用灰色理论GM(2,1)二阶线性动态模型应用于基坑工程中,对基坑的水平位移和沉降预测进行了计算。通过预测计算结果和工程实测结果对比分析,GM(2,1)模型预测精度总体较高,预测结果与实测结果比较吻合,取得了较好的拟合效果。Deformation monitoring is important in the pit excavation project,how to analyze the results of pre-pit deformation monitoring,and acquire the pit deformation of dynamic information,is the urgent need to solve the problem in the process of pit safety construction.According to gray characteristic of pit deformation monitoring data,gray theory GM（2,1） second-order linear dynamic model is applied to excavation,the pit of the horizontal displacement and settlement prediction were calculated.Compared with predicting results and experimental results,GM（2,1） model prediction accuracy is generally high,predicted good agreement with experimental results,and achieved good fitting results.

关 键 词：GM(2 1)模型 基坑 变形预测 

分 类 号：TU470[建筑科学—结构工程]