About the author:

1. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221018,China; 2. School of Civil Engineering, NingboTech University, Ningbo, Zhejiang 315100, China; 3. School ofCivil Engineering, Henan University of Technology, Zhengzhou, Henan 450001, China; 4. TongzhouInternational Engineering Management Co. , Ltd. , Ningbo, Zhejiang 315000, China; 5. NingboKaihong Engineering Consulting Co. , Ltd. , Ningbo, Zhejiang 315500, China

Abstract:

In view of the lack of scientific and reasonable early warning value in the safety monitoring ofhigh formwork support structure ( high⁃support formwork) in engineering practice, a determining andupdating method for monitoring warning value by fusing data and model is proposed. Taking an actualproject as an example, the finite element model is established according to the special design data and theboundary setting conditions of the construction site, and the buckling failure analysis is carried out todetermine the initial warning threshold, which is used to guide the on⁃site monitoring. A visualmonitoring 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 elementmodel is updated, the updated model buckling failure displacement with the initial warning threshold arecompared, and the rationality of the threshold is analyzed. The results show that with the accumulation oftime, the horizontal displacement and vertical settlement of high⁃support formwork structure are graduallyincreasing. The method of determining and updating the monitoring warning value proposed can beiteratively improved in engineering practice. The updated model buckling failure displacement is greaterthan the initial alarm threshold, indicating that the initial warning threshold is safe and reasonable.