Effect of Shear Reinforcement as Horizontal Restraint on the Bearing Capacity of Bridge Deck Slab using Strut-and-Tie Model

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2017 by IJETT Journal
Volume-49 Number-5
Year of Publication : 2017
Authors : Najiyu Abubakar, Redzuan Abdullah, Ahmad Beng Hong Kueh, Mohamad Salleh Yassin
DOI :  10.14445/22315381/IJETT-V49P246


Najiyu Abubakar, Redzuan Abdullah, Ahmad Beng Hong Kueh, Mohamad Salleh Yassin "Effect of Shear Reinforcement as Horizontal Restraint on the Bearing Capacity of Bridge Deck Slab using Strut-and-Tie Model", International Journal of Engineering Trends and Technology (IJETT), V49(5),299-303 July 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

The purpose of this paper is to carry out an analysis and provide a design method for the disturbed/discontinuous regions of concrete bridge deck slab-on-girder, with simplicity and accuracy using strut-and-tie model. Strut-and-tie model in designs of reinforced concrete structures involve the use of some basic tools that include struts, ties and nodes. The method is very powerful but indirect for analysing reinforced concrete complex structures. In this study, the combined geometry of the deck slab and T-beam constituting a corbel-like geometry providing a region of geometric discontinuity produces a non-linear strain distribution. This behaviour enables the development of a modified strut-and-tie model for the system of an existing case-study Bridge. The Strut-and-tie model was developed using different types of configurations and eventually, a much simpler and precise solution is obtained. The concrete and shear reinforcement constitute the model elements in which, an efficient ultimate capacity for the system is obtained without incorporating the contribution of transverse steel reinforcement in the deck slab.

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Strut-and-tie, bridge deck, Finite element, T-beam, strain distribution.