Determining Pull-Out Deformations by Means of an Online Photogrammetry Monitoring System

Yıl 2015, Cilt: 2 Sayı: 1, 54 - 61, 02.03.2015

Emin Özgür Avşar Mehmet Orhan Altan Ünal Anıl Doğan Devrim Akça

https://doi.org/10.30897/ijegeo.302758

Cited By: 1

Öz

hemical anchorages are applied in many engineering implementations, particularly strengthening of
reinforced concrete structures. During strengthening procedure; chemical anchorages should be tested, since
they supply to transfer the load between existing construction elements and newly added elements. Therefore;
the study of the quality of chemical anchorages is an important issue in construction materials science. In this
context; the most important experiment is to determine the pull-out loads of embedded anchorage
reinforcement by applying axial loads. In this study; it is aimed to determine the displacements of steel
reinforcements, embedded into concrete by using chemical anchorages, while applying axial pulling loads. In
order to determine the displacements and load - deformation graphs; starting conditions and every 10 bar
pressure applied conditions of the steel reinforcements were captured by the cameras. The obtained images
were evaluated by using photogrammetric software. Based on the photogrammetric post-processing results, the
load - deformation graphs were plotted and the loads at loss of adhesion were determined.

Anahtar Kelimeler

Acquisition, Monitoring, Engineering, Measurement, Camera, Photogrammetry

Kaynakça

• ACI Committee 355 (1991). State-of-The–Art-Report on Anchorage to Concrete, ACI 355.1R-91, American Concrete Institute, Detroit.
• Albert, J., Maas, H.-G., Schade, A., Schwarz, W., (2002). Pilot studies on photogrammetric bridge deformation measurement, Proceedings of the 2nd IAG Commission IV Symposium on Geodesy for Geotechnical and Structural Engineering, 21–24 May, Berlin, Germany.
• Barazzetti, L., Scaioni, M., (2010). Development and Implementation of Image-based Algorithms for Measurement of Deformations in Material Testing, Sensors 2010, 10, 7469-7495; doi: 10.3390/s 100807469.
• European Organisation for Technical Approvals, (2008). ETAG 001, Edition March 2002, Guideline for European Technical Approval of Metal Anchors for Use in Concrete, Amended November 2006, Second Amendment February 2008, Part Five: Bonded Anchors.
• Kaya, Y., (2007). Pull-out behaviour of partially bonded anchors to be used in retrofitting existing structures under anchorage interface conditions, MsC Thesis, ITU Institute for Science and Technology, 2007, Istanbul, Turkey.
• Maas, H.-G., (2006). Photogrammetric Techniques in Civil Engineering Material Testing and Structure Monitoring, Photogrammetric Engineering & Remote Sensing Vol. 72, No. 1, January 2006, pp. 39–45.
• Maas, H.-G., and M. Niederöst, (1997). The accuracy potential of large format still video cameras, Videometrics V (S. El Hakim, editor), SPIE Proceedings Series, Volume 3174.
• Yılmaz, S., Caliskan, O., Kaplan, H., Kirac, N., (2010). Factors Affecting the Strength of Chemical Anchors, Journal of Engineering and Architecture Faculty of Eskisehir Osmangazi University, Vol: XXIII, No:1.