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苟胜荣¹，张文学²，白立东³

（1.杨凌职业技术学院，陕西 咸阳 712100；

2.湖南铁路科技职业技术学院，湖南 株洲 412006；

3.中国铁路哈尔滨局集团有限公司大庆工务段，黑龙江 大庆163000）

 

摘 要：在深大基坑开挖过程中，基坑周围土体会受到扰动，势必会影响到基坑、基坑周围建筑物和构筑物的稳定与安全。未解决基坑开挖过程中变形监测周期过长而无法长期监测以及监测数据误差等问题，以某工程实例为依据，对基坑周围地表沉降变形进行监测，以地表沉降监测数据为基础数据建立GM（1,1）预测模型，进行基坑后期沉降变形预测分析。结果表明：该模型预测结果能较好的反映基坑的沉降变形情况，预测精度能满足工程需要，预测结果相对于实际观测值表现出超前现象，可为类似工程建设提供参考。

 

关键词：灰色理论；深基坑；变形预测；GM（1,1）模型

中图分类号：TU921        

文献标志码：A        

文章编号：1005-8249（2024）02-0070-05

DOI：10.19860/j.cnki.issn1005-8249.2024.02.013

 

GOU Shengrong1；ZHANG Wenxue2；BAI Lidong3

（1.Yangling Vocational and Technical College，Xianyang 712100，China；

2.Hunan Vocational College of Railway Technology，Zhuzhou 412006，China；

3. Daqing Permanent Way Department，China Railway Harbin Group Co.，Ltd.，Daqing 163000，Chian）

 

Abstract：In the process of excavation of deep foundation pit,the soil around the foundation pit will be disturbed, which will inevitably affect the stability and safety of the foundation pit ,the buildings and structures around the foundation pit.In order to solve the problems such as too long monitoring period for long-term monitoring and monitoring data error during excavation of foundation pit,the surface settlement deformation around the foundation pit was monitored based on a project example,and the GM (1,1) prediction model was established based on the surface settlement monitoring data to predict and analyze the late settlement deformation of foundation pit.The results show that the prediction results of this model can well reflect the settlement and deformation of foundation pit,the prediction accuracy of the two groups of data is respectively "good" and "qualified", the accuracy of the model can meet the engineering needs, and the prediction results are ahead of the actual observed values,which can provide reference for similar engineering construction.

Keywords：grey theory; deep foundation pit; deformation prediction; GM (1,1) model

 

 

基金项目：湖南省教育厅科学研究项目（21C1321）；杨凌职业技术学院科技创新项目（ZK21-17）。

作者简介：苟胜荣(1987-)，男，硕士，副教授，主要研究方向：桥梁与隧道工程和建筑工程方面的教学与研究。

收稿日期：2023-04-25