Zameranie územia a koryta rieky Váh pre potreby výpočtu kubatúr násypov v mieste Piliera P5 a P6 mosta SO 202-00 na ceste I/75-Šaľa-obchvat

Abstract

This diploma thesis deals with the issue of geodetic and bathymetric surveying of the area at the crossing of the planned I/75 road with the Váh River, within the construction of the bridge structure SO 202-00, which forms part of the Šaľa bypass project. The main objective of the thesis is the processing and evaluation of measurements carried out before and after the construction of embankments at bridge piers P5 and P6, followed by the calculation of the embankment volumes. During the fieldwork, a detailed survey of the surface terrain was performed using LiDAR technology, as well as bathymetric measurements of the Váh riverbed with the SATLAB sonar system. The collected data were processed into a digital terrain and riverbed model (DTM/DRM) using DJI Terra, 3D Survey, and AutoCAD software. By comparing the models created before and after the embankment construction, the total volume of the deposited material was determined. These results serve as a basis for verifying the quantity of the built-in material and for the as-built documentation of the bridge structure. The results of the thesis confirm that the integration of GNSS, LiDAR, and bathymetry provides an efficient and highly accurate tool for geodetic documentation of engineering structures in riverine environments.