Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures)
Online ISSN : 2185-6567
ISSN-L : 2185-6567
Paper (In Japanese)
STUDY ON PUNCHING SHEAR RESISTANCE OF RC SLABS SUBJECTED TO IN-PLANE CONFINING PRESSURES
Kazunori FUJIKAKETadasu ITAGAKIShinpei IKEDATomoyuki TOGOKeigo TAKEUCHI
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2020 Volume 76 Issue 4 Pages 360-373

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Abstract

 The aim of this study was to investigate the effect of in-plane confining pressure on the punching shear resistance of RC slabs through punching shear loading test and non-linear finite element analysis. In order to analyze the punching shear fracture behavior of RC slabs subjected to in-plane confining pressures, it was specifically essential to use a constitutive model that can appropriately express the stress-strain relationship of concrete under triaxial compressive stress. As a result, it was shown that the punching shear resistance of RC slabs subjected to in-plane confining pressure could be evaluated from the pyramidal shell model based on the punching shear fracture load bearing mechanism by treating the in-plane confining pressure as an equivalent conversion rebar ratio. Furthermore, in this study, the design formulae of punching shear resistance considering the influence of in-plane confining pressure in the design standards of foreign countries were also examined.

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© 2020 by Japan Society of Civil Engineers
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