Metro do Porto
Project of Bridge Foundation
Work’s Geotechnical Consultancy
The bridge has a high rigidity deck and a arch with a spam of 280m and heigth of 25m.
The foundations of the arch are composed of two large concrete blocks in the abutments and shallow foundations for intermediate columns. They are connected with concrete struts providing the interaction between the structure and the granitic rock mass. The solid foundation mass of the arch have 12m high, 20m long and 7,2m wide at the base. The stability until the closure of the arch was secured by high capacity anchors of 1.600kN. It were performed 106 anchors, 70 in the Porto’ side and 36 in the Gaia’ side.