Issue 54

T. I. J. Brito et alii, Frattura ed Integrità Strutturale, 54 (2020) 1-20; DOI: 10.3221/IGF-ESIS.54.01

Figure 13: Test set-up [5, 6]

Figure 14: View of the segment of tunnel, in meters

The considered segment thickness is equal to 200 mm, the length between hinge supports and the width are equal to 204 cm and 150 cm, respectively. Its average cubic compressive strength of concrete reached 50 MPa and the yielding strength of the longitudinal reinforcement is 450 MPa. The reinforced is composed with 8 mm rebars, spaced of 20 cm and with open stirrups, used as splitting reinforcement, as shown in Fig. 15.

10

150

20

365

DIMENSIONS IN CENTIMETERS

Figure 15: Geometry and typical reinforcement arrangement of the Brennero Base segment tunnel [5]

16