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Placement of semi-transparent tension structures in the portal gate of road tunnels to shift their threshold zone and use sunlight, has been proved to be an interesting procedure to save electrical energy. However, in order to obtain the maximum performance, the shape of the structure has to be established for each tunnel, depending on its geographic location, orientation and surroundings. In previous works, computational methods and a scale model have been used to determine the optimal shape of these structures without expensive and time costing trials. In this work, comparison of the results is presented and it shows that the virtual modeling combined with the previously derived ESTS equation can be used to choose of the most convenient structure.

Computational Simulation versus Scale Model to determine the Optimal Shape of Tension Structures for the use of Sunlight in Road Tunnels