Bridge Leveling Network Monitoring in Construction on Highly Heaving Soils

Abstract

Sometimes, there are deformations of the points of the geodetic network, which are placed on the construction site, in the process of bridges construction on heaving soils. Moreover, most points of the geodetic network are often removed due to heaving soils that make monitoring of such geodetic network more difficult. This article contains comparing and studying the results of the monitoring of the vertical geodetic control network in constructing the bridge over the Verebushka River, obtained by A. Kostechel method and by leveling relative to the bridge under-truss sites. It is proved that the traditional A. Kostechel method in these conditions does not fit because of false results. Consequently, it is suggested for geodetic network monitoring to fasten additional reference marks on the stable elements of the structure in constructing bridges in similar conditions. Then, it is necessary to level their marks regarding the existing benchmarks. It is also suggested to use the heights of these points as control heights to save the common system of heights during constructing in such conditions when traditional monitoring methods are giving false results.