摘要
深基坑开挖过程中,对周围已有建筑物和构筑物的保护至关重要,对基坑周围环境变形进行监测,是施工过程安全控制的主要手段。针对某地铁深基坑施工实际,确定周围建筑物构筑物的监测项目,布置监测点进行数据监测。以移动平均法为基础,构建基坑周围建筑物及地下管线沉降变形的预测模型,以地下管线沉降监测数据为基础进行沉降预测分析。实际结果表明:当预测模型选取不同的参数时,预测结果表现出差异性,如果参数选取合理,则能得到理想的预测效果。当n=1时,预测模型获得结果的精度最高,能较好地反应基坑周围地下管线沉降变形情况,预测模型的适用性和准确性得到验证,可为同类型基坑施工时周围环境监测提供参考。
It is very important to protect the surrounding buildings and structures during the excavation of deep foundation pit.Monitoring the environmental deformation around the foundation pit is the main means of safety control during construction.According to the construction practice of a subway deep foundation pit,the monitoring items of surrounding buildings and structures were determined,and monitoring points were arranged for data monitoring.Based on the moving average method,the settlement and deformation prediction model of buildings around the foundation pit and underground pipelines is constructed.The settlement prediction is analyzed based on the monitoring data of underground pipeline settlement.The actual results show that the prediction results are different when different parameters are selected.If the parameter selection is reasonable,the ideal prediction effect can be obtained.When n=1,the accuracy of the prediction model is the highest,which can better reflect the settlement and deformation of underground pipelines around the foundation pit.The applicability and accuracy of the prediction model are verified,which can provide reference for the monitoring of the surrounding environment during the construction of the foundation pit of the same type.
作者
苟胜荣
Gou Shengrong(Yangling Vocational and Technical College,Yangling 712100,China)
出处
《电子测量技术》
2020年第10期14-17,共4页
Electronic Measurement Technology
基金
陕西省教育厅专项科研计划(18JK0172)
杨凌职业技术学院自然科学研究基金(A2019016)项目资助
关键词
地铁基坑
变形监测
移动平均法
变形预测
the subway foundation pit
deformation monitoring
moving average method
deformation prediction
作者简介
苟胜荣,硕士,讲师,主要研究方向为岩土工程和建筑工程。E-mail:505718449@qq.com
