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为研究基坑工程的变形规律,合理预测基坑未来的变形趋势,针对基坑工程变形中存在的各种变形因素复杂、变形大小不确定等情形,采用灰色系统理论建立基坑变形分析模型,结合工程实例,通过GM(1,1)模型群的建立确定最佳预测模型,然后在最佳模型基础上分别建立全数据模型、新信息模型、自动更新三种模型;预测结果表明应用灰色模型进行基坑工程变形分析的可行性和可靠性,为基坑工程的变形分析和安全性诊断提供了可靠的理论依据和科学的分析方法。
In order to study the deformation law of foundation pit engineering and reasonably forecast the future deformation trend of the foundation pit, the deformation analysis model of foundation pit is established based on the gray system theory in view of the complicated deformation factors in the deformation of foundation pit engineering and the uncertain deformation size. According to the engineering example, the best forecasting model is determined by the establishment of the GM (1,1) model group. Then, based on the best model, the full data model, the new information model and the automatic updating model are established respectively. The forecast results show that the gray model The feasibility and reliability of the deformation analysis of foundation pit engineering provide a reliable theoretical basis and scientific analysis method for deformation analysis and safety diagnosis of foundation pit engineering.