Safety and serviceability of highway bridges, during and after an earthquake, is a prerequisite to ensure continuous transport facilities, emergency and evacuation routes. Recently, fragility curves have emerged as important decision support tools to identify the potential seismic risk and consequences during and after an earthquake. There has been a substantial increase in interest among researchers in the topic of seismic fragility assessment of highway bridges as evidenced by the growing number of published literature. Advanced computational techniques and available resources have led to the development of different methodologies for fragility assessment. This study presents a review of the different methodologies developed for seismic fragility assessment of highway bridges along with their features, limitations and applications. This study presents a review of available methodologies and identifies opportunities for future development. This study mainly focuses on the key features of different method...

Seismic fragility assessment of highway bridges: a state-of-the-art review

Flexural behavior of reinforced concrete beams strengthened with ultra-high performance fiber reinforced concrete

Review of ultra-high performance concrete and its application in bridge engineering

Experimental and numerical analysis of a composite bridge for high-speed trains

Dynamic impact of moving vehicles on bridges is an important and long-standing issue in the design and evaluation of bridges and has received much attention from researchers and engineers The use of the dynamic impact factor (IM) to account for the impact effect of vehicles has been widely accepted in bridge engineering Accurate evaluation of the IM will lead to safe and economical designs of new bridges and provide valuable information for condition assessment and management of existing bridges Nevertheless, agreement on the evaluation of IMs is yet to be reached Numerous studies have shown that the evaluation of the IM is a difficult task because it is influenced by a large number of parameters and uncertainties As a result, different forms and values of IMs are specified by different bridge design codes and this disagreement has been debated in many studies in the past few decades Furthermore, some field tests observed that the IMs in design codes are overestimated while many other field 

State-of-the-Art Review of Dynamic Impact Factors of Highway Bridges

Bond characteristics of straight- and headed-end, ribbed-surface, GFRP bars embedded in high-strength concrete

The curvilinear nature of box girder bridges along with their complex deformation patterns and stress fields have led designers to adopt approximate and conservative methods for their analyses and design. Recent literature on straight and curved box girder bridges has dealt with analytical formulations to better understand the behavior of these complex structural systems. Few authors have undertaken experimental studies to investigate the accuracy of existing methods. This paper presents highlights of references pertaining to straight and curved box girder bridges in the form of single-cell, multiple-spine, and multicell cross sections. The literature survey presented herein deals with: (1) elastic analysis, and (2) experimental studies on the elastic response of box girder bridges.

Literature Review in Analysis of Box-Girder Bridges

Behaviour of composite high performance concrete slab on steel I-beams subjected to static hogging moment

The results from a parametric study on the impact factors for 180 curved continuous composite multiple-box girder bridges are presented. Expressions for the impact factors for tangential flexural stresses, deflection, shear forces and reactions are deduced for AASHTO truck loading. The finite-element method was utilized to model the bridges as three-dimensional structures. The vehicle axle used in the analysis was simulated as a pair of concentrated forces moving along the concrete deck in a circumferential path with a constant speed. The effects of bridge configurations, loading positions, and vehicle speed on the impact factors were examined. Bridge configurations included span length, span-to-radius of curvature ratio, number of lanes, and number of boxes. The effect of the mass of the vehicle on the dynamic response of the bridges is also investigated. The data generated from the parametric study and the deduced expressions for the impact factors would enable bridge engineers to design curved continuo...

Impact Factors for Curved Continuous Composite Multiple-Box Girder Bridges

The objective of this paper is to provide highlights of the most important references related to the development of current guide specifications for the design of straight and curved box-girder bridges. Subjects discussed in this review include (1) different box-girder bridge configurations; (2) construction issues; (3) deck design; (4) load distribution; (5) deflection and camber; (6) cross-bracing requirements; (7) end diaphragms; (8) thermal effects; (9) vibration characteristics; (10) impact factors; (11) seismic response; (12) ultimate load-carrying capacity; (13) buckling of individual components forming the box cross section; (14) fatigue; and (15) curvature limitations provided by the codes for treating a curved bridge as a straight one. The literature survey presented herein encompasses (1) the construction phase; (2) load distribution; (3) dynamic response; and (4) ultimate load response of box-girder bridges.

Khaled Sennah

Papers

Bond characteristics of straight- and headed-end, ribbed-surface, GFRP bars embedded in high-strength concrete

Literature Review in Analysis of Box-Girder Bridges

Behaviour of composite high performance concrete slab on steel I-beams subjected to static hogging moment

Impact Factors for Curved Continuous Composite Multiple-Box Girder Bridges

State-of-the-art in design of curved box-girder bridges