American Society of Civil Engineers

Longspan Bridges with Double Composite Action

by Reiner Saul, (Andrae und Partner GmbH, Stuttgart, Germany)

pp. 608-622

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Document type: Conference Proceeding Paper
Part of: Composite Construction in Steel and Concrete II
Abstract: Continuous steel composite bridges with double composite action have, besides the concrete roadway slab, a concrete bottom chord at the haunches over the main piers. This concrete bottom chord increases the stiffness and reduces the construction cost. The advantages of this system are highlighted exemplary at three bridges with main spans up to 213,75 m (700’). Furthermore, prestressing versus reinforcing of the roadway slab at the piers is discussed and an innovative and economic shear connector presented.

ASCE Subject Headings:
Composite structures
Construction methods
Continuous bridges

Author Keywords:
Composite bridges
Bridge piers - Concrete construction - Concrete slabs - Steel bridges - Structural design
Concrete bottom chord - Concrete roadway slab - Continuous steel composite bridges - Double composite action