Stress Ribbon Concrete Bridges

Author: Schlaich Jörg   Engelsmann Stephan  

Publisher: International Association for Bridge and Structural Engineering

ISSN: 1016-8664

Source: Structural Engineering International, Vol.6, Iss.4, 1996-11, pp. : 271-274

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Abstract

Stress ribbon bridges are efficient, "legible" structures whose behaviour corresponds to a cable hanging freely between supports and stabilized by weight. However, as the dead load increases, so does bending stiffness, resulting inevitably in unwelcome bending stresses at the supports. For this reason, stress ribbon bridges have usually been provided with relatively complicated deviation saddles. In this paper, the concept of a jointless, completely monolithic prestressed concrete stress ribbon bridge is presented, together with some design recommendations.