Horizontal displacement monitoring method of deep foundation pit based on laser image recognition technology

• Published in: Review of scientific instruments Vol. 89; no. 12; p. 125006
• Main Authors: Liu, Peng, Xie, Shulin, Zhou, Guangyi, Zhang, Lixiao, Zhang, Guoxian, Zhao, Xuefeng
• Format: Journal Article
• Language: English
• Published: United States 01.12.2018
• ISSN: 1089-7623
• DOI: 10.1063/1.5061703

Currently, inclinometers are often used to monitor the horizontal displacement of deep foundation pits; however, this method generally has a high cost and complex operation and cannot monitor in real time. In this paper, a novel monitoring method for horizontal displacement of deep foundation pits based on laser image recognition technology is proposed. By identifying the displacement of the spot produced by the laser emitter fixed at the monitoring point, the displacement of the deep foundation pit is determined. In addition, the impact of the angle is considered and eliminated. A series of experimental results indicate that this method exhibits high precision and satisfies the requirements of practical engineering. Simultaneously, it exhibits the advantages of low cost, easy operation, and real-time monitoring. It provides a novel method for the displacement monitoring of deep foundation pits.