Investigation of the precision in geodetic reference-point positioning because of temperature-induced pillar deflections

Močnik, Robert (author), Koler, Božo (author), Zupan, Dejan (author), Ambrožič, Tomaž (author)

To perform geodetic measurements of displacements of the ground and manmade constructions, stabilised reference points are needed from which control points on the object or its surroundings could be measured. Reference points are most commonly stabilised with reinforced concrete pillars; however, they are not always constructed in an appropriate manner. The influence of temperature variation within a pillar on the position of the fixed screw for forced centring is not negligible and should be considered when performing precise measurements. In this research paper, the displacement of a pillar was calculated as a result of the temperature changes in the pillar, and then an experiment was performed in which the pillar was heated from one side, and the horizontal displacement of the fixed screw for forced centring was measured. Both, calculations and measurements, show that at a temperature difference of 16.2 °C, the fixed screw on a 1.5 m high pillar moves by approximately 1 mm, which is a displacement that should be taken into account in precise measurements.

• Language: English
• Keywords: reinforced concrete pillar, based reference point, influence of temperature, calculated displacement, measured displacement, temperature distribution
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2019
• Number of pages: 13 str.
• Numbering: Vol. 19, iss. 16, art. 3489
• PID: 20.500.12556/RUL-132868
• UDC: 528
• ISSN on article: 1424-8220
• DOI: 10.3390/s19163489
• COBISS.SI-ID: 8872545
• Publication date in RUL: 05.11.2021

Record is a part of a journal

• Title: Sensors
• Shortened title: Sensors
• Publisher: MDPI
• ISSN: 1424-8220
• COBISS.SI-ID: 10176278

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 09.08.2019

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0227
• Name: Geoinformacijska infrastruktura in trajnostni prostorski razvoj Slovenije

• Funder: ARRS - Slovenian Research Agency
• Project number: J2-8170
• Name: Nelinearna dinamika prostorskih okvirjev z izpolnjeno kinematično kompatibilnostjo za zahtevno uporabo v industriji