Rheological Effects in the Bridges Constructed with Cantilever Method

Abstract

A characteristic feature of bridges made using cantilever concreting technology is their excessive deflections, which are a result of rheological processes in concrete and prestressing steel. These deflections can be caused by the destruction of the material, e.g. concrete cracking, as well as the changing of the static scheme of the bridge structure, such as the subsidence of supports. The final result of a structure’s operation is changes in its grade line, which in this paper are considered as the deflection line of a bridge’s span.

Keywords

• cantilever bridges
• deflections and bending moments.
• rheological effects
• tests
• long-term deflection