Deformation Measurements and Analysis with Robust Methods: A Case Study, Deriner Dam

Year 2018, Volume: 13 Issue: 1, 99 - 103, 01.03.2018

Berkant Konakoğlu Ertan Gökalp

Abstract

Dams, one of the country's most natural and
cheapest way to product energy, are built for energy production, agricultural
activities and flood protection. Dams with high construction costs are subject to deformation due to
some physical factors. Therefore, dams should be kept
safe to prevent possible dam accidents, loss of life and property. Engineering
structures (such as dams) should be monitored periodically by geodetic and
non-geodetic techniques. Deriner dam is
Turkey's highest double-curved concrete arch dam. In this study, we monitored
deformation with GPS measurements. For this purpose, two period
static GPS measurements were performed on the reference and object points in
the study. Afterwards, GPS measurements were adjusted separately with respect
to free adjustment method and then deformation analysis were carried out by
using the adjusted coordinates and their cofactor vectors. Iterative Weighted
Similarity Transformation (IWST) and Least Absolute Sum (LAS) methods were used
as deformation methods to detect the displacement of the reference and object
points.

Keywords

Concrete arc dam, Deformation, Analysis, IWST, LAS, GPS

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