Five Steel-Free Bridge Deck Slabs in Canada

Author: Bakht Baidar   Mufti Aftab A.  

Publisher: International Association for Bridge and Structural Engineering

ISSN: 1016-8664

Source: Structural Engineering International, Vol.8, Iss.3, 1998-08, pp. : 196-200

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

The Connestogo River bridge, constructed in Ontario, Canada, in 1975, is believed to be the first bridge in the world in which a concrete deck slab on longitudinal girders was designed by taking into account the beneficial arching action in the slab. Since the construction of the Connestogo River bridge, local code has incorporated an empirical design method for deck slabs that takes into account their inherent arching action. Researchers have successfully enhanced the strength of deck slabs by further exploiting their arching action. With the help of tests on both large- and small-scale laboratory models, they have concluded that, provided the slab is suitably confined in both the longitudinal and transverse directions, a deck slab supported by parallel longitudinal beam does not require any reinforcement. Deck slabs without tensile reinforcement have come to be known as "steel-free."

Related content