Evaluation and Accuracy Assessment of Static GPS Technique in Monitoring of Horizontal Structural Deformations
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 6
Abstract
It is well known that, deformation monitoring systems are considered, nowadays, to be the back bone factor for human safety as well as preserving the ultimate economy of his achievements. In this context, there has been always an increasing demand for precise deformation measurements in keeping up several engineering structures and historical monuments. Measuring and monitoring monumental deformation is the sequence of operations that allows the finding of movements of points or features in a specified coordinate system, during two different times for the same investigated feature. The time interval sometimes is the main factor in measuring horizontal deformation, especially in loading test of steel bridges. Hence, the present paper investigates the accuracy of the GPS in monitoring of horizontal deformation with respect to the time of observation. So, a practical simulation test was made to assess the accuracy of GPS with time in measuring horizontal deformation. The obtained results indicated that, the used methods and techniques presented in the current research paper have possessed a very good accuracy, reliability and applicability in monitoring horizontal deformations efficiently. The accuracy of measuring horizontal deformation of points on structure using relative static technique of GPS is from (0.1mm) to (1.8mm) for time interval from 30 minute to 5 minute and has R.M.S.E (0.3mm)
Authors and Affiliations
Prof. Dr. A. K. Abdel-Gawad1 , Dr. Y. M. Mogahed 2 , Dr. Kh. M. Abdel Mageed3 , Eng. A. M. El-Maghraby4
Keywords
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