Open Access Journal

ISSN : 2394-2320 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

IInternational Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

ISSN : 2456-1290 (Online)

Numerical Investigations to Evaluate the Interfacial Shear Strength of Concrete Composite Members

Author : K.Huseni 1 A.Kanchana Devi 2 K.Ramanjaneyulu 3 K.Srinivasan 4

Date of Publication :7th March 2017

Abstract: Concrete composite slabs with precast concrete deck and cast-in-place topping is used extensively in construction industry now a day as it reduces the construction time, eliminates the formwork usage and ensures good quality of construction. The composite action between the segments depends on interfacial shear resistance between the segments which in turn depends on the interface parameters such as cohesion, friction and area of shear connectors. Push-off test is used to evaluate the interfacial shear resistance of concrete composite members. In the present study, L shaped push-off test specimen details reported in the literature is taken up for numerical investigation. A 3D solid modelling of L-shaped push-off specimen is carried out. The concrete part of the specimen is modelled using solid finite element. The material model for concrete could simulate concrete cracking, crushing, and crack closure. The fracture characteristics of concrete are modelled by an orthotropic smeared crack model based on the Rankine’s theory. The reinforcement bar is modelled using line element. The material model for reinforcement steel uses a bilinear elasto-plastic model with hardening. The interface is modelled using a zero length gap element. The interface material model is based on Mohr-coulomb criteria with tension cut off. The nonlinear finite element analysis of the push-off specimen is carried out and validated with the reported results. It is found that the finite element results corroborate with the reported experimental results

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