the high shear forces across the brick/concrete interface to achieve the composite structural action.
From left to right: Yarralumla Brickworks Chimney (Canberra), Red Bridge (Campbelltown), Christ Church Cathedral (Newcastle) from the north-west, Christ Church Cathedral (Newcastle) from the north, Duck Creek Culvert (Granville)
1838, was given structural strength to the new SM1600 loading. The clay brick bridge on the main highway between Launceston and Hobart was rehabilitated by Cintec and Van Ek Contracting of Tasmania working as an alliance, utilising 54-30mm dia X 5m long anchors installed over a period of several weeks. The project was undertaken in 2000, and after a decade of test by traffic, shows every sign of ensuring the bridge is fit for purpose for another century or so. In 2009, Railcorp engaged Bill Jordan & Associates to analyse the structure of the Duck Creek Culvert at Granville and develop strengthening recommendations. The 6 metre span brick arch culvert carries three tracks of the suburban rail system, and overloading had produced structural failure. The solution proposed was a thin concrete lining which acted compositely with the existing brick structure; Cintec anchors were the only system capable of transferring WWW.ANCR.COM.AU
Cintec anchors made from 20 mm deformed stainless steel reinforcement bar were installed in 80 mm diameter holes, the hole diameter being determined by the need to distribute the large shear forces into the brickwork. Only Cintec gives the ability to design the anchor body and hole size independently to optimise the stress distribution in an anchor installation. The installed anchors were then used to support standard concrete reinforcement for the “shotcrete” lining, which was given tightly specified smooth finish to enhance the culvert’s storm water flow capacity. Cintec works in close collaboration with a project’s engineering and architecture team during the design phase to ensure any refit, refurbishment, Heritage repair or conservation project gets the ideal result – 21st century structural strength and integrity which does not detract from a structure’s visual appearance or Heritage values.
Cintec Australasia t. 02 4929 4841 f. 02 4949 7933 e. solutions@cintec.com.au www.cintec.com ANCR SPECIAL FOCUS
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