Abstract

Measuring structures and its documentation is one of the tasks of engineering geodesy. Structural health monitoring (SHM) is defined as a periodic or continuous method to provide information about the condition of the construction through the determination of measurement data and their analysis. In SHM, wide varieties of sensors are used for data acquisition. In the following, the focus is on the application of image assisted total stations (IATS). The combination of tacheometry and photogrammetric measurement offers high flexibility and precision. Different approaches of automated detecting and matching whose applications have been tested in practice are briefly explained. A distinction is made between built-in cameras (commercial) and external camera systems (prototypes). Various successful applications of IATS in the field of SHM are presented and explained.

Highlights

  • Structural health monitoring (SHM) deals with the systematic measurement of structures and their characteristics, such as factory chimneys, bridges, wind turbines or dams.These are periodically examined in order to gain possible conclusions about the structural health of the object [1,2].Due to environmental impacts and permanent strain, civil structures in particular are affected by damaging influences such as cracking in the concrete, spalling, corrosion of the steel and even failure of the structure

  • The results show the successful use of a commercial image assisted total stations (IATS) for dynamic SHM

  • The field tests carried out so far show the successful use of this measurement technology to obtain helpful information about the structure in the field of SHM for existing structures

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Summary

Introduction

Structural health monitoring (SHM) deals with the systematic measurement of structures and their characteristics, such as factory chimneys, bridges, wind turbines or dams.These are periodically examined in order to gain possible conclusions about the structural health of the object [1,2].Due to environmental impacts and permanent strain, civil structures in particular are affected by damaging influences such as cracking in the concrete, spalling, corrosion of the steel and even failure of the structure. Structural health monitoring (SHM) deals with the systematic measurement of structures and their characteristics, such as factory chimneys, bridges, wind turbines or dams. These are periodically examined in order to gain possible conclusions about the structural health of the object [1,2]. Due to environmental impacts and permanent strain, civil structures in particular are affected by damaging influences such as cracking in the concrete, spalling, corrosion of the steel and even failure of the structure. For the years 2017 to 2020, the German government provided EUR 2.9 billion in budgetary funds for the repair and renovation of bridge structures [3]. As the Ponte Morandi motorway bridge [4] in Italy or the Florida International

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