The Dynamic Displacement Monitoring Method Using Unmanned Aerial Vehicles Based on Digital Close-Range Photogrammetry

Yu, Xianzhi; Ge, Yongquan; Zhao, Tonglong; Zhang, Guojian; Liu, Yingchun; Yu, Chengxin

doi:10.1155/2022/1949213

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…Modern techniques often use geometric leveling and total stations for threedimensional (3D) control [7]. The above-mentioned techniques can be used in conjunction with a Terrestrial Laser Scanner (TLS) system [8][9][10][11][12] or Portable Digital Photogrammetric Stations (DPSs) [13][14][15]. In particular, TLS has evolved into a crucial tool for working with historical structures, supplying a point cloud that quickly generates a three-dimension model of a monument [8].…”

Section: Introductionmentioning

confidence: 99%

An Efficient Methodology for Detecting the Vertical Movement of Structures

El-Ashmawy

2023

Eng. Technol. Appl. Sci. Res.

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Details regarding the public safety of engineering structures can be gleaned from measurements and monitoring. The development of a methodology for monitoring and analyzing structures' vertical displacement is explained in this paper. The developed methodology aims to add a new dimension to geometric leveling, and leveling routing, by applying a least squares solution for level network adjustment and performing statistical analysis to assess the change in vertical displacement. To monitor and analyze the vertical deformation of a building in Cairo, Egypt, the proposed methodology was utilized. Twenty monitoring points, five auxiliary points, and three local reference stations were utilized. All the measurements were taken with a geodetic invar staff and an automatic level with an attachment of a parallel plate micrometer. The observations were made for an interval of 81 months. The least squares adjustment technique was applied to obtain the adjusted levels and observations and to generate the required statistical data. The results of the subsequent epochs were compared to the results of the first epoch to determine the vertical movement of the monitoring points for each epoch. In addition, the significance of the present displacement was ascertained by comparing the values of vertical displacement to the determined 95% corresponding confidence intervals. The findings demonstrated that the building remained stable throughout the monitoring period. The case study demonstrates how effectively geometric leveling with least square adjustment can be used to monitor the vertical displacement of structures.

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Section: Introductionmentioning

confidence: 99%

An Efficient Methodology for Detecting the Vertical Movement of Structures

El-Ashmawy

2023

Eng. Technol. Appl. Sci. Res.

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Animation tsunami modelling in 3D to determine shelter and evacuation routes

Rezaldi,

Yoganingrum,

Hanifa

et al. 2024

Environmental Hazards

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Deformation Monitoring of High‐Rise Building Clusters: Acquiring Deformation Coefficients by Combining Satellite Imagery and Persistent Scatterer Interferometry

Zhou,

Chen,

Hao

et al. 2024

Structural Control and Health Monitoring

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Persistent Scatterer Interferometry (PSI) is a remote sensing measurement technology based on electromagnetic waves, capable of simultaneously monitoring deformations in large urban building complexes with millimeter‐level precision. However, relying solely on the line of sight (LOS) deformation sequence based on a specific permanent scatterer cannot accurately analyze building deformations, particularly in cases where high‐rise buildings may simultaneously experience various deformation components such as temperature‐induced deformation, shrinkage, creep, and tilting. To accurately identify the deformation states of high‐rise buildings, the paper begins by systematically summarizing three typical deformation patterns from the unique perspective of synthetic aperture radar (SAR) satellites. These patterns include Pattern I, characterized by temperature‐induced deformation alone, and Pattern II and Pattern III, which involve a combination of deformation in different directions relative to the SAR satellite in addition to temperature‐induced deformation. To accurately monitor the LOS deformation of high‐rise buildings, the paper introduces the concept of acquiring the evolutionary trends of temperature‐related deformation coefficients and proposes a methodology for recognizing and quantifying deformation in high‐rise buildings. Subsequently, this study utilized freely available Sentinel‐1 satellite data to observe the deformation of nine high‐rise buildings in Changsha, China. The research findings indicate that the thermal expansion coefficients of most high‐rise buildings fall within the range of 6 ∼ 12 × 10−6/°C. High‐rise buildings that have been constructed for more than ten years almost no longer experience significant shrinkage or creep, while new constructions may exhibit an initial shrinkage and creep of up to 1.2 × 10−4 mm/mm. Additionally, the study results demonstrate that super‐tall buildings may exhibit centimeter‐scale lateral deformations at their tops due to uneven shrinkage. Findings from the study indicate that the proposed method can achieve cost‐effective and sustainable deformation monitoring of high‐rise building clusters within a large urban area.

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The Dynamic Displacement Monitoring Method Using Unmanned Aerial Vehicles Based on Digital Close-Range Photogrammetry

Cited by 3 publications

References 18 publications

An Efficient Methodology for Detecting the Vertical Movement of Structures

An Efficient Methodology for Detecting the Vertical Movement of Structures

Animation tsunami modelling in 3D to determine shelter and evacuation routes

Deformation Monitoring of High‐Rise Building Clusters: Acquiring Deformation Coefficients by Combining Satellite Imagery and Persistent Scatterer Interferometry

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