Abstract
In this work, the behavior of High Performance Fiber Reinforced Concrete (HPFRC) in the D-regions was experimentally investigated.
It refers to the bottle-shaped stress field which develops large transverse stresses: compression in the bottle neck and tension far away with a peak along the vertical symmetry axis (bursting). This is the case of a member subjected to a compressive axial force applied over a small bearing area, the typical case of a tunnel segment loaded by the TBM jack during the excavation advance. The distribution of the high local stresses under the bearing plate also causes transverse tensile stresses along the horizontal upper border which may crack the concrete (spalling).
The experimental tests were performed on square plates (270 × 270 × 60 mm). A uniform vertical displacement was imposed on top region characterized by a variable width. Several ratios β between the specimen size and the bearing plate width are considered (1, 1.5, 2 and 3).
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© 2012 Springer-Verlag Berlin Heidelberg
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Colombo, M., di Prisco, M. (2012). D-Zones in HPFRC. In: Parra-Montesinos, G.J., Reinhardt, H.W., Naaman, A.E. (eds) High Performance Fiber Reinforced Cement Composites 6. RILEM State of the Art Reports, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2436-5_25
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DOI: https://doi.org/10.1007/978-94-007-2436-5_25
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-007-2435-8
Online ISBN: 978-94-007-2436-5
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