基坑围护结构及周围环境变形的预测

Prediction of Deformation of Foundation Circumstances and Pit Support Structure

传统的基坑支护结构设计具有相当的模糊性和不确定性 ,可能危及基坑和周围环境的安全。笔者利用深基坑支护体系的监测数据 ,采用灰色系统理论建立了基坑工程变形的GM(1 ,1 )预测模型 ,其模型的两个参数可识别基坑变形发展势态 ,并由此讨论了模型的适用范围。最后 ,运用该模型预测分析实际基坑工程支护结构变形 。

The traditional design of pit supporting structure was rather ambiguous and uncertain, and might endanger the safety of the foundation pit and its circumstances. By using the monitored data from deep pit supporting system and the grey system theory, the grey model GM (1,1) was established to predict the deformation of the foundation pit. Two parameters of the model were applied to identify the deformation trend. The applicability of this model was discussed. The model was exemplified in a real case. The results showed that this prediction model might be applied in dynamic design of foundation pit and informationized construction.