Displacement and Slope Measurement of Temporary Retaining Wall in Construction Phase using Video-based3D Modeling 


Vol. 40,  No. 1, pp. 30-38, Feb.  2025
10.14341/JKOSOS.2025.40.1.30


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  Abstract

This study proposes a method to monitor the displacement and slope changes in earth-retaining walls using drone imagery and 3D modeling techniques to investigate the retaining wall behavior during construction. For the actual excavation site, images captured from various heights and angles at different construction stages were registered to create a point cloud model of the retaining wall, complete with coordinate values. The results of the 3D modeling were then compared with the measurements obtained from digital measuring instruments. The analysis revealed that the slope differences between the proposed method and actual measurements were 0.01~0.04°. Additionally, when the difference between the actual and measured displacement was divided by the excavation height, the proposed method met the target error range of 1/100. The largest difference between the proposed method and the actual measurement estimated was 0.07/100. Therefore, the proposed method is effective for analyzing the behavior of the temporary retaining walls during excavation. Moreover, it addresses the limitations of traditional measurement techniques, enabling reliable, daily measurement throughout the construction process.

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[IEEE Style]

채홍종, 강민국, 원정훈, "Displacement and Slope Measurement of Temporary Retaining Wall in Construction Phase using Video-based3D Modeling," Journal of the Korean Society of Safety, vol. 40, no. 1, pp. 30-38, 2025. DOI: 10.14341/JKOSOS.2025.40.1.30.

[ACM Style]

채홍종, 강민국, and 원정훈. 2025. Displacement and Slope Measurement of Temporary Retaining Wall in Construction Phase using Video-based3D Modeling. Journal of the Korean Society of Safety, 40, 1, (2025), 30-38. DOI: 10.14341/JKOSOS.2025.40.1.30.

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