Experimental Investigation of Retrofitting Techniques for Steel Bridge Girders Subject to Fatigue Failure

  title={Experimental Investigation of Retrofitting Techniques for Steel Bridge Girders Subject to Fatigue Failure},
  author={Olivia Mirza and L. Riley Milner and Fidelis Rutendo Mashiri},
Fatigue failure is major concern for infrastructure due to the increasing number of steel structures reaching the end of their design life each year. Increased loadings, deterioration due to weathering, climate change and human error also negatively impact the design life. Rehabilitating steel bridge girders rather than replacing the existing structure can provide an option for an economical and sustainable future. This paper presents the results of an experimental study which implements a… Expand
1 Citations


Behaviour of retrofitted steel structures using cost effective retrofitting techniques
Abstract Steel structures today are edging towards the end of their design life. Recently, the frequency and magnitude of loadings are becoming significantly greater in comparison to the initialExpand
Reducing Brittle and Fatigue Failures in Steel Structures
Structural steel has been vital to engineering and construction over the past century. Its versatility has allowed steel to perform outstandingly in countless applications. However, there have beenExpand
Fatigue assessment of highway steel bridges in presence of seismic loading
In this study a LEFM (Linear Elastic Fracture Mechanics) approach is used in a probabilistic context to evaluate the fatigue reliability of steel girder highway bridges in the presence of seismicExpand
Retrofitting of damaged bridges – the sustainable solution
ABSTRACT Rehabilitation of damaged bridges may be more beneficial than building new bridges. However, proper methods are necessary to assess the level of damages and to verify the fitness of suchExpand
The effect of retrofitted shear connection systems on the dynamic response of composite concrete steel beams
Of the nearly 5000 bridges in New South Wales, about 17% are more than 50 years old. Most of these older bridges are considered structurally deficient by modern standards for the loads they areExpand
Life-cycle prediction of steel bridges using reliability-based fatigue deterioration profile: Case study of neka bridge
Fatigue deterioration profiles of critical elements in a railway truss bridge are determined using a probabilistic approach. A performance function including fatigue strength, R, and fatigue action,Expand
The fatigue behavior of welded thin-walled T-joints made up of both circular hollow section (CHS) braces and chords, subjected to cyclic in-plane bending, is described in this paper. CHS chords andExpand
On the estimation of fatigue life in notches differentiating the phases of crack initiation and propagation
Over the last three decades, a variety of models have been developed in order to predict the life of components under fatigue. Some of the models are based on the definition of the fatigue process asExpand
Full range S–N curves for fatigue life evaluation of steels using hardness measurements
A simplified formula for deriving full range S–N curves of steels with ultimate tensile strength <1400 N/mm2 is proposed by combining empirical formulae and a mathematical function. The salientExpand
Thin circular hollow section-to-plate T-joints : Stress concentration factors and fatigue failure under in-plane bending
Welded thin-walled (t<4 mm) tube-to-plate T-joints made up of cold-formed circular hollow sections welded onto a plate to form a moment resistant connection are used in the road transport andExpand