Numerical and Experimental Studies of the Use of Fiber-Reinforced Polymers in Long-Span Suspension Bridges

Yuri Gosteev,Alexander Lebedev,Andrey Yashnov,Alexander Obukhovskiy,Ilya Konovalov,Sergey Salenko

doi:10.3390/en15051864

Yuri Gosteev, Alexander Lebedev + Show 4 more

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For the construction of transport infrastructure (including pipeline bridges for oil and gas transportation) in the conditions of the Far North, it is necessary to improve modern regulatory and technological base for using the fiber-reinforcing polymers. It is necessary to conduct searching research to determine the conditions and shapes of application of the fiber-reinforced polymer (FRP) in the load-bearing structures of bridges and pipelines through barriers. One such searching research is the study of the use of a suspension hybrid bridge with a superstructure of FRP. For this purpose, the calculations of finite-element models of pedestrian suspension bridges were performed and their aerodynamic stability was investigated on the section models in a wind tunnel. The novelty of the study consists in the proposed additions to the structure of the bridge, and the permissible geometric of the cross-sections of the superstructure were established for ensuring aerodynamic stability. Finally, this was the first time that it was directly established that the strength, stiffness and aerodynamic stability of a suspension hybrid bridge were provided.

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The creation of a durable and safe transport infrastructure in the northern regions of the Russian Federation will open a short access to the Northern Sea Route, but will serve the development of cities, connecting remote regions of Russia both with each other and with its central part
For the construction of transport infrastructure such as highways, railway bridges and pipeline bridges in the conditions of the Far North (Artic Circle), it is necessary to develop a modern regulatory and technological base, which will ensure both geotechnical safety during the construction and exploitation of transport infrastructure in difficult climatic conditions, and the use of new fiber-reinforced polymers (FRP) to replace traditionally used building materials
The stiffness of FRP girders with a small modulus of elasticity can be secured if there was an increase in the moment of inertia of the cross-section girders and the use of a suspension system of increased stiffness, while providing aerodynamic stability

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The creation of a durable and safe transport infrastructure in the northern regions of the Russian Federation will open a short access to the Northern Sea Route, but will serve the development of cities, connecting remote regions of Russia both with each other and with its central part This requires the construction of new bridges for transportation of people, goods and various type of energies. The need to replace traditional building materials is due to the fact that fiber-reinforced polymers have high strength characteristics with a low density. This type of material is resistant to aggressive environments and extremely low temperatures, as well as its fluctuations. FRP is an alternative for traditional used building materials [1]

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