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Technology in Australia 1788-1988Australian Academy of Technological Sciences and Engineering
Table of Contents

Chapter 6

I Construction During The Settlement Years

II The Use Of Timber As A Structural Material

III Structural Steel
i The Entertainment Centres at Sydney and Brisbane
ii The Centrepoint Tower, Sydney
iii The Merivale Rail Bridge - Brisbane

IV Concrete Technology

V Housing

VI Industrialised Pre-cast Concrete Housing

VII Ports And Harbours

VIII Roads

IX Heavy Foundations

X Bridges

XI Sewerage

XII Water Engineering

XIII Railways

XIV Major Buildings

XV Airports

XVI Thermal Power Stations

XVII Materials Handling

XVIII Oil Industry

XIX The Snowy Mountains Scheme

XX The Sydney Opera House

XXI The Sydney Harbour Bridge

XXII Hamersley Iron

XXIII North West Shelf

Sources and References


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The Merivale Rail Bridge - Brisbane

The location of the bridge just upstream of another bridge and a 90 bend in the Brisbane River dictated a long span bridge to cater for the coral and coal barges of up to 5,000 tonnes weight using the river (Fig. 9). Maximum grading out of South Brisbane railway station cleared the river navigation clearance by only a small margin and this combination of long span and minimum construction depth dictated a shallow bridge deck supported from above. The designers looked at a wide range of possibilities and selected a shallow steel-framed deck structure suspended by inclined steel wire rope hangers from twin tied steel box arches. Lateral stiffness was enhanced by inclining the arches inwards to meet at their crown. The arch ribs and the horizontal ties joining the arch springings were fabricated by welding in segmental boxes using high ductility medium high strength steel and were field-jointed by high tensile steel bolts. The main span is 133 metres long and the deck is suspended from the arches by thirty-two 94.5 mm diameter steel rope bridge cables. The bridge was designed by consulting engineers, Cameron McNamara Pty. Ltd. and was fabricated and erected by Transfield (Qld.) Pty. Ltd. It was completed in 1979.

Figure 9

9 Merivale Rail Bridge

Organisations in Australian Science at Work - Cameron McNamara Pty Ltd; Johns & Waygood; Transfield (Qld) Pty Ltd

People in Bright Sparcs - Cameron, I. G.

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© 1988 Print Edition page 325, Online Edition 2000
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