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A Feasibility Study of Building Structural Deformation Monitoring using Global Positioning (GPS)
Engineering and Construction
Pages 7 (1757 words)
Through this paper,the authors attempted to assess the utility of geodetic surveys,which include conventional terrestrial surveys as well as satellite surveys using GPS,and geotechnical or structural surveys
To achieve their objectives through this study, the authors monitored structural deformations in one high-rise building, viz. the Twin Tower of Science and Technology Complex, and one low-rise building, viz. the Innovation Centre Building, both of which belonged to the University Technology MARA (UiTM), in Selangor, Malaysia. The authors chose high accuracy GPS (±1 mm) and total station (± 1 mm, 1”) to apply in deformation monitoring of the buildings, to improve accuracy of the survey. During the course of the study, authors identified appropriate points on the building structure, and suitable control points around the building to begin the structural monitoring process. They then carried out GPS surveys using the rapid static technique, geotechnical surveys through crack-width measurements using the digital movement gauge, and terrestrial surveys using the intersection technique on the building structures for four epochs. In this study, the authors demonstrated that while crack width measurements using the digital movement gauge were helpful in identifying deformations occurring in one dimension (1 D), the intersection technique of terrestrial surveying is advantageous for monitoring the deformations that occur in two dimensions (2 D). ...
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