Modern GFRP Composite Footbridges

Miśkiewicz, Mikołaj; Pyrzowski, Łukasz

doi:10.3846/enviro.2017.143

Cited by 6 publications

(9 citation statements)

References 14 publications

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“…Rotterdam, Netherlands. 2016 https://materialdistrict.com/article/plastic-bridges-rotterdam/ 22 FiberCore Europe (англ.). 23 Olaf Gipser Architects (англ.).…”

Section: Sats119mentioning

confidence: 99%

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Architecture of contemporary pedestrian bridges made of fiber-reinforced composite materials

Strugac

Trifonov

2019

Russian journal of transport engineering

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Composite materials are often used in the construction industry nowadays. Including such industries as construction of bridges – unique structures. Today it is possible to produce from FRP not only separate bridge parts and single structural elements, but also entire span structures and one-piece composite bridges made as a monoblock element. The architecture of contemporary footbridges built with the use of fiber reinforced composite plastics in recent decades is being studied and analyzed in the article. The case-study examines the history of plastic composites as structural materials and the trends and evolution of the design of plastic products. The paper proposes a classification of modern pedestrian bridges made of fiber reinforced composites (based on a combination of innovation in the use of materials and in the design). The following three classes are distinguished: composite materials + traditional design; composite and traditional materials + hybrid design; composite materials + new design. The most recent examples of objects belonging to each of the three groups identified in the classification were reviewed and analyzed in course of the study (including contemporary Russian examples of composite pedestrian bridges). Particular attention is paid to the most advanced technologies, such as 3D-printing of composite bridges, as well as a number of other contemporary experimental production methods. The experience of scientists and manufacturers from Germany, Spain, Great Britain, China and other regions of the world has been studied. Further research and application of modern fiber-reinforced composites in combination with the latest production technologies of 3D-printing and computer parametric design can contribute to the development of modern bridge construction, which would be helpful for expanding the typology of structures and improving the design of new structures.

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“…Rotterdam, Netherlands. 2016 https://materialdistrict.com/article/plastic-bridges-rotterdam/ 22 FiberCore Europe (англ.). 23 Olaf Gipser Architects (англ.).…”

Section: Sats119mentioning

confidence: 99%

“…Общий вес моста составляет примерно 19 тонн. Он был изготовлен всего за три месяца и смонтирован с помощью крана всего за три часа»[22].…”

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Architecture of contemporary pedestrian bridges made of fiber-reinforced composite materials

Strugac

Trifonov

2019

Russian journal of transport engineering

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“…Composite FRP materials were, and still are, extensively used for the retrofitting of existing structures [ 1 , 2 , 3 , 4 , 5 ]. As far as new constructions are concerned, FRPs are currently implemented in various limited situations that mainly include footbridges [ 6 , 7 ], as reported in [ 8 ], where Alper et al (1977) presented a reinforced plastic pedestrian bridge, a bridge erected (1972) in Tel Aviv (Israel) that can be mentioned among the relevant pioneering applications. Further references to existing applications can be found in [ 5 ], [ 9 ], and in [ 10 ], where the preliminary design of an FRP cable-stayed pedestrian bridge was presented.…”

Section: Introductionmentioning

confidence: 99%

Vibration Serviceability of the Aberfeldy Footbridge under Various Human-Induced Loadings

2023

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Developing new structural materials, such as composite materials, has provided many opportunities in bridge engineering. Among these materials, glass-fiber-reinforced polymers (GFRPs), in particular, have found applications in footbridges. However, some of the commonly recognized advantages of GFRPs, such as the high values of the strength/weight ratio, can also be considered disadvantageous for certain realizations, particularly when the composite material used in a footbridge is, for example, subjected to dynamic actions such as those that are induced by wind and walking and/or running users. The induced accelerations can reach high values in comparison to recommended thresholds. Further, the natural frequency decays during the service life, reducing the capacity of the frequencies to move toward the frequency content of the pedestrian step. In this framework, the presented research is devoted to the dynamic comfort assessment of a pioneering cable-stayed GFRP pedestrian bridge, Aberfeldy, which was assembled in 1992 in the eponymous small town, which is located in Scotland (UK). The assessment was numerically performed through a finite element (FE) model, which was tuned based on the literature data concerning geometry, structural details, and in situ-acquired frequencies. The analyses carried out in this study include the evaluation of the accelerations’ time histories, which were induced when simulating a set of pedestrian path scenarios, and the dynamic actions that occur during pedestrian traveling. Specifically, different values of velocity and step frequency were considered as well as the inclusion of walking and running movements. Then, based on the acceleration values, the assessments of comfort criteria for the current standards were elaborated while also recognizing that the peak accelerations—usually attained for short periods—cannot be the only parameters considered in evaluating the pedestrian bridge capacity. This investigation allowed a dynamic comfort rating to be established for the Aberfeldy footbridge.

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“…GFRP is a composite material, whose structure is made of a minimum of two components: Glass Fiber (GF) and polymer (usually an epoxy) [ 1 ]. GFRP characteristics depend on fiber properties, their type and amount, layers arrangement, chemical stability, matrix strength and interface bonding [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study and Artificial Neural Network Simulation of Cutting Forces and Delamination Analysis in GFRP Drilling

et al. 2022

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This paper reports the results of measurements of cutting forces and delamination in drilling of Glass-Fiber-Reinforced Polymer (GFRP) composites. Four different types of GFRP composites were tested, made by a different manufacturing method and had a different fiber type, weight fraction (wf) ratio, number of layers, but the same stacking sequence. GFRP samples were made using two technologies: a novel method based on the use of a specially designed pressing device and hand lay-up and vacuum bag technology process. The study was conducted with variable technological parameters: cutting speed vc and feed per tooth fz. The two-edge carbide diamond-coated drill produced by Seco Company was used in the experiments. Cutting-force components and delamination factor were measured in the experiments, and photos of the holes were taken to determine the delamination. In addition, modeling of cause-and-effect relationships between the technological drilling parameters vc and fz was simulated with the use of artificial neural network modeling. For all tested GFRP materials, an increase in fz led to an increase in the amplitude of cutting-force component Fz. The lowest values of the amplitude of cutting-force component Fz were obtained with the lowest tested feed per tooth value of 0.04 mm/tooth for all tested materials. It was observed that materials produced with the use of the specially designed pressing device were characterized by lower values of the cutting-force component Fz. It was also found that the delamination factor increased with an increase in fz for all tested GFRP materials. A comparison of the lowest and the highest values of fz revealed that the lowest delamination factor increase was archived by the B1 material and amounted to about 12.5%. The error margin of the obtained numerical modeling results does not exceed 15%, so it can be concluded that artificial neural networks are a suitable tool for modeling cutting force amplitudes as a function of vc and fz. The study has shown that the use of the special pressing device during the manufacturing of composite materials has a positive effect on delamination.

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Modern GFRP Composite Footbridges

Cited by 6 publications

References 14 publications

Architecture of contemporary pedestrian bridges made of fiber-reinforced composite materials

Architecture of contemporary pedestrian bridges made of fiber-reinforced composite materials

Vibration Serviceability of the Aberfeldy Footbridge under Various Human-Induced Loadings

Experimental Study and Artificial Neural Network Simulation of Cutting Forces and Delamination Analysis in GFRP Drilling

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