ABSTRACT
The five cells box girder bridge deck shown in Figure 1 is considered (Martinez Y Cabrera 2002). The crosssection of the bridge deck has main nominal dimensions b = 11.75 m and h = 1.35 m. The upper and lower slabs are 0.25 m and 0.20 m thick, respectively. Figures 1a and 1b show the detailing of the steel reinforcement and the location of the prestressing cables, respectively. The deck is prestressed with cables made up respectively of 19 strands of 0.6 inches. The nominal values of the material strengths for concrete, reinforcing steel, and prestressing steel are fc = −45 MPa, fsy = 500 MPa, and fpy = 1800 MPa, respectively. The nominal value of the prestressing is σp0 = 1300 MPa.
