| Title |
Conceptual Design and Displacement Recognition Performance Verification of Displacement Measurement System for Retaining Wall Structure Based on Laser Sensor |
| Authors |
Kim, Jun-Sang ; Lee, Gil-yong ; Kim, Young Suk |
| DOI |
https://dx.doi.org/10.6106/KJCEM.2022.23.1.064 |
| Keywords |
Laser Sensor; Retaining Wall Structure; Displacement Measurement; Small Construction Site |
| Abstract |
The retaining wall structure is essential for construction work that performs underground excavation. Displacement management of the retaining wall structure is important regardless of the size of the construction. However, in the case of small-scale construction sites with an excavation depth of less than 10m, displacement management of retaining wall structure not properly performed due to problems such as 1) companies’ smallness, 2) lack of capacity of construction managers, 3) complexity of installation, dismantling and displacement of measuring instruments. As a result of analyzing previous research, it was analyzed that it is difficult to apply this to a small?scale construction site because most of the previous research has problems in using an expensive 3D scanner or installing many measuring instruments. This study aims to propose a conceptual design of a displacement measurement system for retaining wall structure based on laser sensor and to verify the displacement recognition performance of core technology applied to the conceptual design. A conceptual design was proposed using a 2D laser scanner. As a result of verifying the displacement recognition of the 2D laser scanner, a displacement of 15mm was analyzed to be sufficiently understandable. In the future, if the proposed conceptual design is developed and applied to the small-scale construction site, it is thought that it will contribute to the reduction of safety accidents at small-scale construction sites. |