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Monitoring of supporting structures with profile laser scanning

Schill, Florian and Eichhorn, Andreas (2018):
Monitoring of supporting structures with profile laser scanning.
In: Geodesy for Smart Cities, Faculty of Geodesy - Technical University of Civil Engineering Bucharest, In: GeoPreVi 2018 International Symposium, Bukarest, 29.10.-30.10.2018, [Online-Edition: https://geoprevi.xyz/],
[Conference or Workshop Item]

Official URL: https://geoprevi.xyz/

Abstract

This paper presents the evaluation of measurements on bridge structures with a profile scanner and shows that existing concepts of classical monitoring measurements can be extended with the use of profile laser scanning.

The contact-free acquisition method of profile laser scanners reduces the expense for personnel and instrumentation compared to conventional sensors used for the monitoring of civil engineering structures. It furthermore enables the measurement of non-accessible areas of the monitored supporting structures. In addition, the availability of information along an entire structural profile can be used to flexibly deal with a wide variety of problems. With a measurement rate of at least 50 Hz, typical structural deformation signals can be recorded and sufficient data can be collected to characterize the underlying deformation processes dependably.

Overall, an automated and efficient spatio temporal processing scheme is presented, which is based on the discrete wavelet transform. With this signal analysis tool outliers are detected and eliminated, but furthermore an automated structural analysis based on the details of the supporting structures surface is realized. In addition to the derivation of deformations, a quality assessment with comprehensive integration of the redundant measurement information is possible as an in-situ uncertainty determination.

Item Type: Conference or Workshop Item
Erschienen: 2018
Creators: Schill, Florian and Eichhorn, Andreas
Title: Monitoring of supporting structures with profile laser scanning
Language: German
Abstract:

This paper presents the evaluation of measurements on bridge structures with a profile scanner and shows that existing concepts of classical monitoring measurements can be extended with the use of profile laser scanning.

The contact-free acquisition method of profile laser scanners reduces the expense for personnel and instrumentation compared to conventional sensors used for the monitoring of civil engineering structures. It furthermore enables the measurement of non-accessible areas of the monitored supporting structures. In addition, the availability of information along an entire structural profile can be used to flexibly deal with a wide variety of problems. With a measurement rate of at least 50 Hz, typical structural deformation signals can be recorded and sufficient data can be collected to characterize the underlying deformation processes dependably.

Overall, an automated and efficient spatio temporal processing scheme is presented, which is based on the discrete wavelet transform. With this signal analysis tool outliers are detected and eliminated, but furthermore an automated structural analysis based on the details of the supporting structures surface is realized. In addition to the derivation of deformations, a quality assessment with comprehensive integration of the redundant measurement information is possible as an in-situ uncertainty determination.

Title of Book: Geodesy for Smart Cities
Publisher: Faculty of Geodesy - Technical University of Civil Engineering Bucharest
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Geodesy
13 Department of Civil and Environmental Engineering Sciences > Institute of Geodesy > Geodetic Measuring Systems and Sensor Technology
Event Title: GeoPreVi 2018 International Symposium
Event Location: Bukarest
Event Dates: 29.10.-30.10.2018
Date Deposited: 21 Dec 2018 10:01
Official URL: https://geoprevi.xyz/
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