WEB Variable carbon-reinforced concrete construction for thin-walled footbridgesWednesday (01.01.2020) 00:15 - 00:30 Part of:
The demand for sustainable bridges with span widths of 5 to 20 m has been increasing strongly in the last years. Due to the positive material properties, concrete is predestined for such bridges. The use of carbon-reinforcement in the concrete instead of steel is advantageous in order to achieve a high degree of durability. Furthermore resources can be reduced drastic by minimizing the concrete cover and so reduction of total weight can be achieved.
In the present research project, a thin-walled t-beam bridge construction made of a high-performance concrete with a combined steel-free reinforcement system was developed and optimized according to the force flow. Although the steel-free reinforcement consists of positively integrated CFRP-blades, carbon grids and GRP-rods. A new variable-adjustable formwork system is used for the technological implementation. The new carbon reinforced t-beam bridge will be implemented for the first time within the framework of a reference structure: footbridge in Heimbach-Vlatten, which will be built in 2021.