DYNAMIC SHEAR CAPACITY OF RC BEAMS

Author(s): Somraj Amornthep (1), Kazunori Fujikake (1) and Bing Li (2)
Paper category: Proceedings
Book title: Seventh International Conference on Concrete under Severe Conditions –
Environment and Loading, 23-25 September 2013, Nanjing, China
THEME 7
Editor(s): Z.J. Li, W. Sun, C.W. Miao
K.Sakai, O.E. Gjørv, N.Banthia
ISBN: 978-2-35158-124-7; e-ISBN: 978-2-35158-134-6
Publisher: RILEM Publications SARL
Publication year: 2013
Pages: 34-44
Total Pages: 11
Language : English

Abstract: The aim of this study was to investigate the dynamic shear failure behavior of RC beams
under rapid loading through an experimental study and also to set up a strut-and-tie model
with loading rate effects to predict the dynamic shear resistance of RC beams. Thus, rapid
loading test with 24 RC beams was performed, in which shear span-to-depth ratio, shear
reinforcement ratio and loading rate were variable. The RC beams exhibited diagonal tension
failure, shear compression failure and flexural failure depending mainly on the shear span-todepth
ratio and the shear reinforcement ratio. The influence of loading rate on the maximum
resistance is more significant for the RC beams failed in shear than for those failed in flexure.
The strut-and-tie model with loading rate effects was finally developed, in which the
thickness of the compression strut was formulated to be increased with an increase in loading
rate. The developed strut-and-tie model was good agreement with the experimental results.

Online publication : 2013
Publication type : full_text
Public price (Euros) : 0.00