1812 Constitution Bridge (Cádiz)

Virtual Bridge

Virtualisation of the bridge

For the purpose of making the public at large more aware of the management and construction process of some of the major public works carried out in Spain, in this case the 1812 Constitution Bridge over Cadiz Bay, the Fundación ACS and the Real Academia de Bellas Artes de San Fernando, are collaborating in the creation of this website and also in the setting up of a 3D video on display from 18 April 2016 in the academy’s museum at Calle Alcalá,13 in Madrid.

3D display at academy’s museum

Virtual 3D panoramic reconstruction of the bridge from the navigation channel.

To virtualise the bridge thousands of photographs were taken plus a drone video of the bridge.

Subsequent processing of all this material enabled us to create a browsable 3D point-cloud model.

3D reconstructions enable us to observe some details of the bridge.

Drone data capture

Drone flights carried out at the 1812 Constitution Bridge enabled us to take a host of photographs that were then used for photogrammetric reconstruction of bridge structures.

Working with this data on our equipment, we have been able to build up a 3D reconstruction of the bridge structure. We then used the photogrammetric data to hone the virtual models and add photorealistic textures to the picture.

Drone data capture
Photogrammetry

Photogrammetry

Four bridges in one

Models

The purpose of the Autocad drawings is to define the parts to be built and offer accurate technical information on bridge construction. The virtual images are then used in multimedia content; this means they must be comprehensible at a glance.
3D computer graphics offer a wealth of expressive resources for various levels of public expression. They serve not only for illustrating the basic and executive projects that have to be input during the pre-construction phase but also for presenting an executed project to the media.

Segment cross-section Cadiz section (2-3)

Segment cross-section Cadiz section (2-3)

Cross-section of a single-leg pylon Puerto Real section

Cross-section of a single-leg pylon Puerto Real section

Cross-section of removable deck section

Cross-section of removable deck section

Cross-section of tower segment of stayed section

Cross-section of tower segment of stayed section

Saddle

Saddle

Cable stay

Cable stay

Gobierno de España, Ministerio de Fomento, Dragados, Drace, CFCSL, Real Academia de Bellas Artes de San Fernando