DBPapers
DOI: 10.5593/SGEM2014/B23/S10.029

MONITORING AND EVALUATION OF PRESTRESSED CONCRETE ELEMENT USING PHOTOGRAMMETRIC METHODS

J. Hamouz,J. Braun,R. Urban, M. Stroner, L. Vrablik
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-12-4 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 3, 231-238 pp

ABSTRACT
The prestressed thin-walled concrete elements enable the bridge a relatively large span. These structures are advantageous in economic and environmental way due to their thickness and lower consumption of materials. The bending moments can be effectively influenced by using the pre-stress. However, shear forces can cause unexpected shear cracks and deflection of the structure. A set of experiments were done to monitor the shear cracks. During the experiment the discrete points were monitored. To determine a large number of points, the photogrammetric methods combined with polar method using the total station were chosen.

Keywords: concrete, shear crack, photogrammetry