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Aerial Close-Range Photogrammetry to Quantify Deformations of the Pile Retaining Walls
Journal of the Indian Society of Remote Sensing ( IF 2.2 ) Pub Date : 2021-01-03 , DOI: 10.1007/s12524-020-01275-5
Abdullah Ekinci , Tanner Muturi , Pedro Miguel Vaz Ferreira

Today, as structures with life expectancy of more than 100 years are being constructed, it is vital to gain knowledge about the gradual decline in material properties. Accordingly, to ensure the longevity and safety of these structures, monitoring has been incorporated as a fundamental part of their service life. To monitor structural deformation, various methods have been developed, with the most common being the survey of certain points of a structure during and after construction using a total station. New techniques are now being developed, and one of the most promising ones is photogrammetry because it provides a simple method to monitor a structure using unmanned air vehicles (UAVs). This paper is aimed at sharing the strategic steps followed in monitoring the deflection of a simple secant pile retaining wall during excavation and construction of a basement. The monitoring is performed using a commercial UAV in combination with point cloud formation, georeferencing, and comparison software (cloud compare, I-Site Studio, 3D Reshaper, etc.). The monitoring results show very good agreement with the traditional inclinometer deflection measurements and numerical analysis, thereby demonstrating the feasibility of the proposed method. The authors believe that in the future, photogrammetry using UAVs can become the standard method for geotechnical monitoring because of its speed, lower cost and ease of use, when compared to conventional methods, a non-destructive method, and is easy to learn and use.

中文翻译:

航空近距离摄影测量量化桩挡土墙的变形

今天,随着预期寿命超过 100 年的结构正在建造,了解材料性能逐渐下降的知识至关重要。因此,为了确保这些结构的使用寿命和安全性,监控已被纳入其使用寿命的基本组成部分。为了监测结构变形,已经开发了各种方法,最常见的是使用全站仪在施工期间和施工后对结构的某些点进行调查。现在正在开发新技术,其中最有前途的技术之一是摄影测量,因为它提供了一种使用无人驾驶飞行器 (UAV) 监控结构的简单方法。本文旨在分享在地下室挖掘和施工过程中监测简单割线桩挡土墙挠度所遵循的战略步骤。使用商用无人机结合点云形成、地理配准和比较软件(云比较、I-Site Studio、3D Reshaper 等)进行监控。监测结果与传统的测斜仪挠度测量和数值分析非常吻合,证明了该方法的可行性。作者认为,在未来,使用无人机的摄影测量可以成为岩土监测的标准方法,因为与常规方法相比,它是一种非破坏性方法,并且易于学习和使用,具有速度快、成本低和易于使用的特点。 . 使用商用无人机结合点云形成、地理配准和比较软件(云比较、I-Site Studio、3D Reshaper 等)进行监控。监测结果与传统的测斜仪挠度测量和数值分析非常吻合,证明了该方法的可行性。作者认为,在未来,使用无人机的摄影测量可以成为岩土监测的标准方法,因为与常规方法相比,它是一种非破坏性方法,并且易于学习和使用,具有速度快、成本低和易于使用的特点。 . 使用商用无人机结合点云形成、地理配准和比较软件(云比较、I-Site Studio、3D Reshaper 等)进行监控。监测结果与传统的测斜仪挠度测量和数值分析非常吻合,证明了该方法的可行性。作者认为,在未来,使用无人机的摄影测量可以成为岩土监测的标准方法,因为与常规方法相比,它是一种非破坏性方法,并且易于学习和使用,具有速度快、成本低和易于使用的特点。 . 监测结果与传统的测斜仪挠度测量和数值分析非常吻合,证明了该方法的可行性。作者认为,在未来,使用无人机的摄影测量可以成为岩土监测的标准方法,因为与常规方法相比,它是一种非破坏性方法,并且易于学习和使用,具有速度快、成本低和易于使用的特点。 . 监测结果与传统的测斜仪挠度测量和数值分析非常吻合,证明了该方法的可行性。作者认为,在未来,使用无人机的摄影测量可以成为岩土监测的标准方法,因为与常规方法相比,它是一种非破坏性方法,并且易于学习和使用,具有速度快、成本低和易于使用的特点。 .
更新日期:2021-01-03
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