融合数据与模型的高大模板支撑结构监测预警阈值确定及更新方法  

Determining and Updating Method of Monitoring and Warning Threshold for High Formwork Support Structure by Fusing Data and Model

作　　者：李强 王佩璇 马海鹏 张营营 卢璐 LI Qiang;WANG Peixuan;MA Haipeng;ZHANG Yingying;LU Lu(School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou,Jiangsu221018,China;School of Civil Engineering,NingboTech University,Ningbo,Zhejiang315100,China;School of Civil Engineering,Henan University of Technology,Zhengzhou,Henan450001,China;Tongzhou International Engineering Management Co.,Ltd.,Ningbo,Zhejiang315000,China;Ningbo Kaihong Engineering Consulting Co.,Ltd.,Ningbo,Zhejiang315500,China)

机构地区：[1]中国矿业大学力学与土木工程学院,江苏徐州221018 [2]浙大宁波理工学院土木建筑工程学院,浙江宁波315100 [3]河南工业大学土木工程学院,河南郑州450001 [4]同舟国际工程管理有限公司,浙江宁波315000 [5]宁波市凯弘工程咨询有限公司,浙江宁波315500

出　　处：《施工技术(中英文)》2025年第2期136-143,共8页Construction Technology

基　　金：浙江省自然科学基金(LY24E080012);宁波市重点研发计划项目(2023Z221,2024Z216);宁波市公益性研究计划项目(2023S004);浙江省尖兵领雁计划项目(2023C03183);浙江省建设科研项目(2022K134,2023K226)。

摘　　要：针对工程实践中高大模板支撑结构(高支模)安全监测缺少科学、合理预警阈值问题,提出一种融合数据与模型的监测预警阈值确定及更新方法。以某实际高支模工程为例,根据专项设计资料和施工现场边界设置条件建立有限元模型,进行屈曲破坏分析,确定初始预警阈值,用于指导现场监测。搭建视觉监测系统,实时监测高支模结构位移,感知数据并进行超限预警;反馈实测数据,更新有限元模型,将更新后的模型屈曲破坏位移和初始预警阈值进行对比,并分析阈值合理性。结果表明,随着时间积累,高支模结构水平偏移和竖向沉降均呈逐渐增大趋势。提出的监测预警阈值确定及更新方法可在工程实践中不断迭代改进,更新后的模型屈曲破坏位移大于初始报警阈值,说明初始预警阈值偏于安全,取值合理。In view of the lack of scientific and reasonable early warning value in the safety monitoring of high formwork support structure(high⁃support formwork)in engineering practice,a determining and updating method for monitoring warning value by fusing data and model is proposed.Taking an actual project as an example,the finite element model is established according to the special design data and the boundary setting conditions of the construction site,and the buckling failure analysis is carried out to determine the initial warning threshold,which is used to guide the on⁃site monitoring.A visual monitoring system is built to monitor the displacement of high⁃support formwork structure in real time,perceive data and carry out over⁃limit warning.The measured data is responded and the finite element model is updated,the updated model buckling failure displacement with the initial warning threshold are compared,and the rationality of the threshold is analyzed.The results show that with the accumulation of time,the horizontal displacement and vertical settlement of high⁃support formwork structure are gradually increasing.The method of determining and updating the monitoring warning value proposed can be iteratively improved in engineering practice.The updated model buckling failure displacement is greater than the initial alarm threshold,indicating that the initial warning threshold is safe and reasonable.

关 键 词：高支模 屈曲破坏 视觉监测系统 位移 有限元分析 监测 预警 

分 类 号：TU755[建筑科学—建筑技术科学]