Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/212849

Title

The influence of concrete material behaviour on the design, construction and durability of the Sir Leo Hielscher Bridge

Author(s)

Hart, John;  Connal, John;  Berndt, Marita

Abstract

The Sir Leo Hielscher Bridge, South (otherwise known as the New Gateway Bridge) is a major concrete box girder bridge across the Brisbane River. The material properties and behaviour of concrete affected the design, construction, and durability in many ways. There is more to concrete than 28 day strength. In precasting or segmental cast-in-place construction, early age strength is also important. In a continuous bridge, shrinkage, creep, and thermal properties affect the choice of articulation and the deformation of the structure during construction and in the long term. In a high and long bridge with large pours, concrete needs to be pumpabLe. In massive concrete placements, concrete heat of hydration can produce high peak temperatures and gradients. This bridge, including concrete in the tidal zone, has a 300 year design life. This paper discusses the predictive models, the specified concrete properties, testing programs, thermal analysis and other measures taken to achieve the required durability.

Publication type

Journal article

Source

Concrete In Australia, Vol. 37, no. 4 (2011), pp. 27-34

Publication year

2011

FOR Code(s)

0905 Civil Engineering

Keyword(s)

Bridges;  Concrete;  Concrete box girder bridge;  Construction;  Design;  Durability;  New Gateway Bridge;  Sir Leo Hielscher Bridge

Publisher

Concrete Institute of Australia

ISSN

1440-656X

Publisher URL

http://www.concreteinstitute.com.au/Concrete-in-Australia.aspx

Copyright

Copyright © 2011 Concrete Institute of Australia.

Peer reviewed