Abstracts Archive

Hazardous wind conditions can lead to vital safety problems for long-span bridges, either dynamic oscillations or overturning of high sided vehicles. Engineers need to understand the local wind effect to ensure the safety and acceptable performance of infrastructures. Traditionally, aerodynamic stud...

This work addresses the experimental studies developed on a 61m-long stress-ribbon footbridge with fundamental frequencies in the vicinity of regular human-induced excitation, which undergoes significant vibrations when crossed by pedestrians matching a pace around 2 Hz. Past research has shown that...

The dynamic effects caused by circulating vehicles on bridges are one of the main concerns on the design, monitoring and maintenance of the roadway infrastructure. In the case of modular steel bridges, which are truss structures composed by regular prefabricated units, this regard is critical, as de...

Steel trusses have often been used as medium-to-long-span railway-over-bridge structures due to their rapid installation and reliable performance. However, fatigue reduces the service life of these steel bridges. Rapid stress reversals are generated in steel bridges due to the high-speed movement of...

The behavior of irregular bridges is more complex than that of regular systems, which is why some standards propose procedures or modification factors in the design of these structures are considered. Bridges can be irregular in their substructure (due to changes in stiffness and resistance of their...

Norway is a coastal country that relies heavily on ferry connections in order to provide efficient means of transportation for local communities and industries. Møre and Romsdal county, where the research was conducted has a population of 265.000, an area of 14.300 km2, and over 50 ferry docks in a...

Selected results collected in the continuous dynamic monitoring of a 3-span overpass using MEMS accelerometers are reported in the paper. The investigated structure is a steel-concrete bridge including a trapezoidal box girder of variable height and thin-walled cross-beams with curvilinear axis, so ...

The behaviour of thin-walled members subjected to non-uniform bending cannot be properly predicted by the Euler-Bernoulli and Timoshenko models. The inadequacy of the classical beam theory depends on several phenomena occurring in real box girders, namely: (i) warping, (ii) shear flange deformation ...

As the increasing requirement in nonlinear time history analysis of structures under bi-directional ground motions, the demand for the employment of RotD100 response spectrum-compatible bi-directional ground motions also increases. However, only spectrum-compatible bi-directional ground motions cann...

The reassessment of existing mechanical bridge machineries in The Netherlands has created the need for the development of acceptance/rejection criteria to assess their structural safety. The existing design code in The Netherlands [1] defines an ultimate limit state, meant for new torque regulated m...

The scissors mechanism, which consists of a chain of rotating discrete elements pin-connected to multiple framework members, can be deployed and retracted, making it highly functional and compact. This useful module can be used on bridges close to unmanned automated bridges. In order to use this use...

Bridge assessments aim to establish the structural capacity of assets to ensure regulatory standards are met or to eventually design and plan for refurbishment works. However, the techniques used to conduct these assessments are based on potentially overconservative codes of practice, hence resultin...