Abstract

Determining the displacements and consequent deformations of structures is a demanding branch of engineering. Displacements are most often determined by geodetic methods, among which high-precision non-contact methods have recently taken the lead. Engineering geodesy is an indispensable part of construction projects. In the desire for efficient and fast measurements, the technology of terrestrial laser scanning (TLS) and the use of robotic total station (RTS) and other geodetic methods are becoming more and more useful for engineers. In the presented study, we focused on the measurement and comparison of vertical displacements with various mentioned equipment and the determination of the influence of meteorological conditions on the displacements of timber beams that we used to perform the experiment. Measurements were performed both in the laboratory and outdoors. A novelty in the work was the use of a TLS scanner to determine the evaluation of small value displacements and the analysis of the usability of geodetic measuring equipment. In the Materials and Methods section, we describe the equipment used and the characteristics of the beams. The Results section describes the experimental outcomes, which include the performance of experimental analysis of vertical displacements of timber beams under different meteorological conditions. Altogether, the results consist of geodetic measurements and the processing of measured data. The results of measurements of vertical displacements with a terrestrial laser scanner were compared with the results obtained with a robotic total station were evaluated and compared with the displacements calculated from static analysis and the results of other methods used.

Highlights

  • Engineering geodesy is an essential part of construction projects, as it provides the necessary support in all phases of construction projects, from design to construction to recording of built facilities and infrastructure

  • Our work focused on the applicability of the terrestrial laser scanning (TLS) method, which has not been previously used for this type of research

  • The goals of the experiment were to determine the applicability of geodetic noncontact methods for measuring displacements of timber beams and to check the static load-bearing capacity of beams under different meteorological conditions

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Summary

Introduction

Engineering geodesy is an essential part of construction projects, as it provides the necessary support in all phases of construction projects, from design to construction to recording of built facilities and infrastructure. The basic element of geodesy is the acquisition of spatial data of the earth’s surface and objects with the help of various geodetic measurement techniques and instruments. The applicability of non-contact methods for determining displacements and deformations is described in [1–5]. The analysis of various geodetic methods is carried out to determine displacements and their applicability and suitability for detecting displacements of smaller values. The RTS method is in the forefront, which allows for automatic tracking of the target in motion and a sufficient number of measurements per second. Our work focused on the applicability of the terrestrial laser scanning (TLS) method, which has not been previously used for this type of research. We compared the results with the applicability of the robotic total station (RTS) with other measurement tools and methods

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