Alain Nussbaumer
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View article: A WIM-Based Assessment of Multiple Vehicle Presence Effects on Fatigue Damage of Highway Bridges
A WIM-Based Assessment of Multiple Vehicle Presence Effects on Fatigue Damage of Highway Bridges Open
The fatigue provisions for bridge design in North America and Europe are highly simplified for the sake of practical implementation, in comparison with the state of the art in understanding of the true fatigue behavior. Historically, one s…
View article: Model uncertainties in action effects and load bearing capacity calculation in statically indeterminate reinforced concrete structures
Model uncertainties in action effects and load bearing capacity calculation in statically indeterminate reinforced concrete structures Open
For the dimensioning and assessment of structures, it is common practice to compare action effects with sectional resistances. Extensive studies have been performed to quantify the model uncertainty on the resistance side. However, for sta…
View article: Models and methods for probabilistic safety assessment of steel structures subject to fatigue
Models and methods for probabilistic safety assessment of steel structures subject to fatigue Open
We review of the state of the art in probabilistic modelling for fatigue reliability of civil engineering and offshore structures. The modelling of randomness and uncertainty in fatigue resistance and fatigue load variables are presented i…
View article: New developments on fatigue in Eurocode on steel structures
New developments on fatigue in Eurocode on steel structures Open
The design rules for the verification of civil engineering steel structures against fatigue are compiled in the European harmonized design standard Eurocode EN 1993-1-9 released in 2005. This design standard is currently under revision, to…
View article: Influence of fiber orientation on the high cycle tensile fatigue resistance of Ultra-High Performance Fiber Reinforced Cementitious Composites (UHPFRC)
Influence of fiber orientation on the high cycle tensile fatigue resistance of Ultra-High Performance Fiber Reinforced Cementitious Composites (UHPFRC) Open
This paper quantitatively studies the influence of fiber orientation on the high cycle tensile fatigue resistance of ultra-high performance fiber reinforced cementitious composites (UHPFRC) within and beyond elastic domain. Eight tensile f…
View article: Exploring the potential of the critical shear crack theory for reinforced and post-tensioned glass beams: Initial analysis and experiments
Exploring the potential of the critical shear crack theory for reinforced and post-tensioned glass beams: Initial analysis and experiments Open
In the evolution of structural glass beam elements, the requirements for post-fracture load bearing capacity and safe failure behaviour have led to the development of reinforced and post-tensioned beams. Maximum bending capacity in the pos…
View article: Damage-Based Assessment of the Fatigue Crack Initiation Site in High-Strength Steel Welded Joints Treated by HFMI
Damage-Based Assessment of the Fatigue Crack Initiation Site in High-Strength Steel Welded Joints Treated by HFMI Open
This study aimed to identify the fatigue crack initiation site of high-frequency mechanical impact (HFMI)-treated high-strength steel welded joints subjected to high peak stresses; the impact of HFMI treatment residual stress relaxation be…
View article: European traffic on road bridges and recalibration of damage equivalence factor for fatigue verification
European traffic on road bridges and recalibration of damage equivalence factor for fatigue verification Open
The evolution of European traffic, combined with the current revision works of the Eurocodes (CEN250 project 2 nd Eurocode generation), represents an opportunity to improve the simplified method for fatigue checks (also known as the lambda…
View article: Development of a Mechanical Wedge–Barrel Anchor for CFRP Rods: Static and Fatigue Behaviors
Development of a Mechanical Wedge–Barrel Anchor for CFRP Rods: Static and Fatigue Behaviors Open
In this study, a mechanical anchorage for prestressed carbon fiber-reinforced polymer (CFRP) rods was proposed. The proposed anchorage consisted of a steel barrel with a conical hole and three separate aluminum wedges that are in direct co…
View article: Strengthening of Steel Connections in a 92-Year-Old Railway Bridge Using Prestressed CFRP Rods: Multiaxial Fatigue Design Criterion
Strengthening of Steel Connections in a 92-Year-Old Railway Bridge Using Prestressed CFRP Rods: Multiaxial Fatigue Design Criterion Open
This paper presented a new retrofit system for strengthening the stringer-to-floor-beam double-angle connections in a 92-year-old riveted railway bridge in Switzerland, using prestressed carbon fiber-reinforced polymer (CFRP) rods. The str…
View article: Development of Mechanical Strengthening System for Bridge Connections Using Prestressed CFRP Rods
Development of Mechanical Strengthening System for Bridge Connections Using Prestressed CFRP Rods Open
Stringer-to-floor beam web-to-web double-angle connections are among the most fatigue-prone elements in old riveted bridges. These connections are often designed to carry only shear loads. However, in these elements, fatigue damage occurs …