Home Articles The Deformation Monitoring of Large Engineering Structures Using RTK-GPS

The Deformation Monitoring of Large Engineering Structures Using RTK-GPS

Wan Aziz W.A
Department of Geomatic Engineering, Faculty of Geoinformation Science Engineering, University of Technology Malaysia,
Malaysia
Email: [email protected]

Zulkarnaini. M.A.
Department of Geomatic Engineering
Faculty of Geoinformation Science Engineering
University Technology Malaysia

Mimi. D
Shu.K.K
Department of Geomatic Engineering
Faculty of Geoinformation Science Engineering
University of Technology Malaysia

Voon. M.H.
Department of Geomatic Engineering
Faculty of Geoinformation Science Engineering
University of Technology Malaysia

Deformation of large engineering structures such as long span bridges, high rise buildings, dams, etc., are often measured in order to ensure that these structures is exhibiting a safe deformation behaviour. For many years, monitoring the structural deformation has relied on various conventional terrestrial measurements such as precise levelling, close range photogrammetry, total station surveys, geotechnical methods, etc. The technological advancement in GPS technology and data processing software have recently made GPS a much more convenient, accurate and cost-effective tool for natural and man-made structural deformation monitoring. A GPS positioning techniques such as, a Real Time Kinematic (RTK) method represents a smart solutions to the problem obtaining high productivity without sacrificing very much in terms of accuracy and reliability. With this method, relative displacements can be measured at rates of 1Hz. The RTK-GPS is currently carrier phase observations processed in real time resulting in position coordinates whereby the kinematic parameters of deformation can be computed in order to predict failure events. Here, the timely identification of deformation associated with ground settlement can save lives, avert large financial liabilities and avoid severe environmental damage. This paper highlights the potential deformation monitoring applications of RTK-GPS for the selected large engineering structures in Malaysia, namely Penang Bridge, Batu Dam and Serawak Building. Keywords: Large engineering structure, Deformation, RTK-GPS.