凉水塔变形监测与基坑敏感因子灰色关联分析  

Gray correlation analysis between monitoring deformation of cooling towers and sensitive factors of foundation pits

作　　者：栾亨宣[1] 许浩[2] 郭传超 田志超 左世晓 胡军伟 栾元重[7] Luan Hengxuan;Xu Hao;Guo Chuanchao;Tian Zhichao;Zuo Shixiao;Hu Junwei;Luan Yuanzhong(School of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266061,China;School of Intelligent Equipment,Shandong University of Science and Technology,Tai′an 271019,China;Shandong Rail Transit Survey and Design Institute Co.,Ltd.,Jinan 250101,China;Shandong Energy Group Luxi Mining Co.,Ltd.,Heze 274700,China;Linyi Huibaoling Iron Ore Co.,Ltd.,Linyi 277700,China;Shandong Phoenix Mountain Iron Ore Co.,Ltd.,Linyi 277700,China;School of Surveying and Mapping and Spatial Information,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学机械电子工程学院,山东青岛266061 [2]山东科技大学智能装备学院,山东泰安271019 [3]山东轨道交通勘察设计院有限公司,济南250101 [4]山东能源鲁西矿业有限公司,山东菏泽274700 [5]临沂会宝岭铁矿有限公司,山东临沂277700 [6]山东凤凰山铁矿有限公司,山东临沂277700 [7]山东科技大学测绘与空间信息学院,山东青岛266590

出　　处：《工程勘察》2024年第9期50-54,88,共6页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金(52204171);山东省自然科学基金面上项目(ZR2020MD024);山东省自然科学基金青年基金(ZR2021QE085);济南市数字孪生与智慧水利重点实验室开放研究基金(37H2022KY040114)。

摘　　要：基坑开挖容易引起临近电厂凉水塔变形,是深基坑工程面临的主要难题之一。本文实地监测深基坑开挖对附近电厂凉水塔的影响,统计了基坑开挖过程中凉水塔地表垂直和水平位移、结构变形等参数。依托某实际工程,研究基坑开挖引起凉水塔变形预测方法,建立凉水塔地表垂直位移灰色预测模型。采用灰色关联分析确定基坑各敏感因素对凉水塔变形的影响程度,由大到小依次为:基坑与建筑物间距、土体弹性模量、围护结构厚度、土体内摩擦角、土体粘聚力。通过开展凉水塔变形监测与相关研究工作,相关研究理论能够为类似深基坑工程提供参考。The excavation of the foundation pit is likely to cause deformation of the cooling tower of the adjacent power plant,which is one of the main challenges faced by deep foundation pit projects.In this paper,the impact of deep foundation excavation on the cooling tower of the nearby power plant is monitored in the field,and parameters such as vertical and horizontal ground displacement and structural deformation of the cooling tower during the excavation process are calculated.Based on an actual project,the method of predicting the deformation of the cooling tower caused by the excavation of the foundation pit is studied,and a gray prediction model of the vertical displacement of the ground surface of the cooling tower is established.The gray correlation analysis is used to determine the influence of each sensitive factor on the deformation of the tower in descending order:the distance between the pit and the building,the modulus of elasticity of the soil,the thickness of the enclosure,the friction angle within the soil,and the cohesion of the soil.By carrying out deformation monitoring and related research work on the cooling tower,the relevant research theories can provide a reference for similar deep foundation pit projects.

关 键 词：基坑 电厂凉水塔 监测 预测 灰色关联分析 

分 类 号：TU195.3[建筑科学—建筑理论]