Rapid developments in engineering structures and the growing interest in studying the earth crust movements, the analysis of deformation measurements, measurement methods and precision has revealed new demands. The purpose of this study is to determine the deformations that take place on dam crest due to different water level, water load and dam’s body weight. AltÄ±nkaya Dam, which is a rock fill dam, was selected as application area and a deformation network consisting of 6 reference and 11 object points was constructed. In this study, deformation measurements were performed between 2000 and 2002. Measurements were made every June and September in that the water level was minimum and maximum, respectively. Hence, measurements were made in 4 periods. All measurements were performed using static GPS measurement method. In this study, Iterative weighted transformation (IWST), Least Absolute Sum (LAS), Congruency test analysis method and Fredericton was used for performing two dimensional deformation analyses.
Key words: GPS, dam, deformation, analysis, congruency test, IWST, LAS, Fredericton.
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