Investigating the mechanism of shear fatigue in reinforced concrete beams subjected to pulsating and moving loads using digital image correlation

Benny Suryanto, George Staniforth, Jaehwan Kim, Esayas Gebreyouhannes, Nobuhiro Chijiwa, Chikako Fujiyama, Peter Keith Woodward

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Abstract

An experimental investigation on three shear-critical reinforced concrete beams was performed to investigate the mechanism of shear fatigue. The first beam was simply tested to failure under monotonic loading to determine the static capacity, whereas the other two were subjected to repetitive loading below its static capacity to failure. Of these two beams, one was subjected to a stationary pulsating load at midspan while the other was subjected to a step-wise moving load along the span. During each experiment, the crack pattern was monitored throughout using an automated crack mapping employing the digital image correlation technique. The results show that each beam exhibited a unique crack pattern which could be characterised as shear-flexure in nature. It is shown the nature of crack propagation under monotonic loading is dissimilar to that under repetitive loading, especially when the load is not stationary. Moving load is also shown to cause greater damage to the beam than the stationary pulsating load and result in a reduction in fatigue life by almost two orders of magnitude.
Original languageEnglish
Title of host publicationMATEC Web of Conferences
Subtitle of host publicationProceedings of the International Conference on Sustainable Civil Engineering Structures and Construction Materials
Pages03015
Volume258
DOIs
Publication statusPublished - 25 Jan 2019
EventInternational Conference on Sustainable Civil Engineering Structures and Construction Materials: Sustainable Structures for Future Generation - Royal Ambarrukmo Yogyakarta Hotel, Yogyakarta, Indonesia
Duration: 5 Sep 20187 Sep 2018
Conference number: 4
http://conference.tsipil.ugm.ac.id/scescm/

Conference

ConferenceInternational Conference on Sustainable Civil Engineering Structures and Construction Materials
Abbreviated titleSCESCM 2018
CountryIndonesia
CityYogyakarta
Period5/09/187/09/18
Internet address

Keywords

  • shear
  • moving load
  • DIC
  • fatigue

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    Suryanto, B., Staniforth, G., Kim, J., Gebreyouhannes, E., Chijiwa, N., Fujiyama, C., & Woodward, P. K. (2019). Investigating the mechanism of shear fatigue in reinforced concrete beams subjected to pulsating and moving loads using digital image correlation. In MATEC Web of Conferences: Proceedings of the International Conference on Sustainable Civil Engineering Structures and Construction Materials (Vol. 258, pp. 03015). [03015] https://doi.org/10.1051/matecconf/201925803015