Geometric characteristic of flexural-shear cracks of members without shear reinforcement

J. Lu*, Y. Yang, M.A.N. Hendriks

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review


For reinforced concrete members without shear reinforcement, the shear failure is characterized by the formation of a critical flexural shear crack. Recently experimental observations making use of Digital Image Correlation (DIC) by many researchers suggested the significance of geometric characteristics and kinematic conditions of critical shear cracks in shear failure. However, limited efforts were reported in literature on the quantification of the geometric characteristics of critical shear cracks. This is mainly due to the lack of understanding of the mechanism of how the flexural shear cracks form. In this paper, the available models in literature for the shear crack trajectory and the underlying theoretical assumptions are reviewed first. Those models include the shear crack model proposed by the authors. Next, the shear crack trajectory models are validated using a collection of shear crack patterns based on the DIC data obtained from the shear failure database from Delft University of Technology. The majority of the crack patterns are from full-scale shear tests of deep beams with an effective depth larger than 1.0 m. The comparison helps us to have a basic understanding of how accurate the available flexural shear crack trajectory models can achieve.
Original languageEnglish
Title of host publicationThe proceedings of the 14th fib PhD Symposium 2022
Publisherfib. The International Federation for Structural Concrete
Number of pages16
ISBN (Electronic)978-2-940643-17-2
Publication statusPublished - 2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.


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