Experimental Investigation of the Effect of Temperature on the Structures in the Measurement of Displacements

Abstract

Measurement of displacement and deformation of structures is a very demanding engineering task and is carried out on all existing and newly built bridges and other demanding structures. The results of the measured displacements are thus influenced by several atmospheric parameters, among which the temperature is exposed, since the measurements are usually carried out over the whole day at different seasons and conditions, where the temperature differences are significant. In this paper the influence of temperature on the geodetic measurements of the displacements of the steel structure in the unburdened state is presented. To this end, measurements of the steel bridge during the summer time were performed. The temperature and thermal imaging at various locations every half hour were investigated. To calculate the influence of the temperature on the position of the observed point some statistical methods were used. It is evident from the results that in this kind of geodetic measurements, temperature measurements are indispensable. By taking into account the temperature correction results that are very comparable with the predicted values of displacements which can be obtained. Not observing the temperature can result in misleading values of displacement which can lead to misinterpretation and consideration of the obtained value.

Method of Administrative-Territorial Zoning of the Design Parameters of Air Temperature

“…The atmospheric temperature has a significant impact on the enclosing and the load-bearing structures in addition to the properties of the building materials used. Many studies have been conducted to analyze these effects [1][2][3][4][5][6].…”

“…The theoretical model to predict the temperature of the bridges was proposed, taking into account the air temperature and the solar radiation [3]. The effects of the air temperature on the deformation and the displacement of steel bridges were experimentally demonstrated and the necessity to consider the temperature changes during the stress-strain analysis was emphasized [5].…”