scholarly journals A simplified finite element model for assessing steel fibre reinforced concrete structural performance

2016 ◽  
Vol 173 ◽  
pp. 31-49 ◽  
Author(s):  
Ali A. Abbas ◽  
Sharifah M. Syed Mohsin ◽  
Demetrios M. Cotsovos
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
Steel Fibre ◽  
Element Model ◽  
Structural Performance ◽  
Fibre Reinforced Concrete ◽  
Steel Fibre Reinforced Concrete ◽  
Simplified Finite Element Model

Structural performance of steel fibre reinforced concrete — Part I. Overview of the experimental program

2014 ◽  
Vol 5 (1) ◽  
pp. 9-19
Author(s):  
I. Kovács
Keyword(s):  
Reinforced Concrete ◽  
Steel Fibre ◽  
Concrete Beams ◽  
Test Methods ◽  
Reinforced Concrete Beams ◽  
Shear Behaviour ◽  
Structural Performance ◽  
Fibre Reinforcement ◽  
Fibre Reinforced Concrete ◽  
Steel Fibre Reinforced Concrete

Abstract The papers of the series deal with experimental characterisation of mechanical as well as structural properties of different steel fibre reinforced concretes that can be used for several structural applications. An extensive experimental programme (six years) has been developed to investigate the effect of steel fibre reinforcement on the mechanical performance and structural behaviour of concrete specimens. Specimens and test methods were selected to be able to detect realistic behaviour of the material, representing clear effect on the structural performance. Material compositions, test methods, type of test specimens will be detailed in the presented paper (Part I). Furthermore, compressive strength (Part II), stress-strain relationship (Part II), splitting strength (Part III) and toughness (Part IV) will also be discussed. In the light of the motivation to determine the structural performances of 1D concrete structural element affected by steel fibre reinforcement, bending and shear behaviour (Part V) as well as serviceability state (Part VI) of steel fibre reinforced concrete beams will be analysed. Since normal force — prestressing force — can affectively be used to improve the structural performances of RC element flexural tests were carried out on prestressed pretensioned steel fibre reinforced concrete beams (Part VII). Moreover, focusing on the in-plane state of stresses for 2D structures, behaviour of steel fibre reinforced concrete deep beams in shear and steel fibre reinforced concrete slabs (Part VIII) in bending will be explained. Finally, based on the wide range of the experimental and analytical studies on the presented field, a new material model for the 1D uniaxial behaviour (Part IX) and its possible extension to the 3D case (Part X) will be described hereafter. All papers will put emphasis on the short literature review of the last four decades.

Simplified finite element method analysis of ultra-high-performance fibre-reinforced concrete columns under blast loads

2016 ◽  
Vol 20 (1) ◽  
pp. 139-151
Author(s):  
Juechun Xu ◽  
Chengqing Wu ◽  
Jun Li ◽  
Jintao Cui
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Model ◽  
High Performance ◽  
Concrete Columns ◽  
Element Model ◽  
Fibre Reinforced Concrete ◽  
Reinforced Concrete Columns ◽  
Dimensional Finite Element ◽  
High Performance Fibre

Ultra-high-performance fibre-reinforced concrete has exceptional mechanical properties including high compressive and tensile strength as well as high fracture energy. It has been proved to be much higher blast resistant than normal concrete. In this article, flexural behaviours of ultra-high-performance fibre-reinforced concrete columns were investigated through full-scale tests. Two 200 mm × 200 mm × 2500 mm columns with and without axial loading were investigated under three-point bending tests, and their load–displacement relationships were recorded and the moment curvatures were derived. The derived moment curvature relationships of ultra-high-performance fibre-reinforced concrete columns were then incorporated into a computationally efficient one-dimensional finite element model, which utilized Timoshenko beam theory, to determine flexural response of ultra-high-performance fibre-reinforced concrete columns under blast loading. After that, the one-dimensional finite element model was validated with the real blast testing data. The results show good correlation between the advanced finite element model and experimental results. The feasibility of utilizing the one-dimensional finite element model for simulating both high-strength reinforced concrete and ultra-high-performance fibre-reinforced concrete columns against blast loading conditions is confirmed.

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