Application of MEMS in Deformation Monitoring of Model Foundation Pit

Di  Wu; Yang  Yi; Wenbo  Lin; Jianjian  Wu; Yanxin  Yang

doi:10.6180/jase.202410_27(10).0015

Application of MEMS in Deformation Monitoring of Model Foundation Pit

Di Wu¹, Yang Yi¹, Wenbo Lin¹, Jianjian Wu¹, and Yanxin Yang²This email address is being protected from spambots. You need JavaScript enabled to view it.

¹School of Architecture and Transportation Engineering, Guilin University of Electronic Technology, Guilin, Guangxi 541004, P.R. China

²School of Civil Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan 643000, P.R. China

Received: January 1, 2024
Accepted: September 11, 2023
Publication Date: January 12, 2024

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202410_27(10).0015

Real-time monitoring of foundation pits is an important part of the engineering construction. This paper proposes a method of deformation monitoring of foundation pit based on MEMS technology. The algorithm based on time-domain integration is adopted, and a fixed distance test is designed to verify the feasibility of the algorithm. Through the indoor model test of foundation pit monitoring, MEMS sensors are embedded to collect the acceleration, rotation angle and the other signals of soil movement, and then the acceleration signal is integrated to obtain displacement by algorithm calculation. Finally, the deformation characteristics of soil in the process of foundation pit are analyzed by using soil displacement and rotation angle to investigate the effectiveness of applying MEMS technology to foundation pit monitoring. The test results show that the MEMS sensor could accurately collect the acceleration, rotation angle and other signals of soil movement in model box. The monitoring method proposed in this paper lay a theoretical foundation and experimental verification for the application of MEMS technology in foundation pit monitoring.

Keywords: MEMS technology, excavation deformation monitoring, Acceleration, Time domain integration algorithm, Displacement of soil

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