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Bridge Analysis: Are We Data Managers or Engineers?
The Queensland Department of Transport and Main Roads (TMR) commenced a program to theoretically assess the capacities of existing bridges on the freight network in order to develop a family of assessment ratios to facilitate rapid bridge…
Life Extension of Aging Railway Bridges: A Case Study of the Burnett River Bridge
The North Coast Rail Line in Queensland between Bundaberg and Gladstone has three major crossings over the Burnett, Kolan and Boyne Rivers. The bridges were constructed in the 1890s using cast iron piers and through-girder spans. Queensland Rail…
Potential Framework for the Nationwide Assessment of Heavy Vehicle Access to Bridges
A key component to improving freight productivity in Australia is to improve access to the network for heavy vehicle operators. The assessment of bridge capacity is perceived to be critical to this aim. Currently a significant number of bridge…
Queen Street Bridge Over Laverton Creek Condition Assessment and Rehabilitation Using Encased Sacrificial Anodes and Monitoring of Performance
The Queen Street Bridge over Laverton Creek in the west of Melbourne is a 35-year old bridge consisting of inverted ‘T’ beams which are simply supported on four large pier walls and situated in a marine environment. Routine visual inspection…
Review of Axle Spacing Mass Schedules and Future Framework for Assessment of Heavy Vehicle Access Applications
A key component to improving freight productivity in Australia is to improve access to the network for heavy vehicle operators. Assessment of bridge capacity is perceived to be critical to this aim.
Benefits and Uses of FE Modelling in Bridge Assessment and Design
Structural analysis has progressed a long way from hand calculations and the use of distribution factors. From the first computer methods, grid and grillage analysis techniques evolved, leading through progressive enhancements to the advanced 3D…
Condition Assessment and Strengthening of Shear Connection Systems for Composite Bridges
Some old bridges in Australia were constructed with a deck system consisting of non-composite concrete slab over steel girders. The paper herein presents the methodology for structural retrofitting/ strengthening of these existing bridges based on…
Auckland Harbour Bridge Box Girder Strengthening Design and Construction
The economic vitality of Auckland depends upon the movement of people and freight around the city’s motorways and the Auckland Harbour Bridge (AHB) is a crucial component of the network. Traffic loads derived from weigh-in-motion (WIM) data measured…
Network Assessment for High Risk Mobile Crane Under IAP
There are 5094 bridges and bridge size culverts under the jurisdiction of the Roads and Traffic Authority (RTA) NSW. More than 50% of these bridges were built before 1976 and design load was significantly lower than the T44 design load in accordance…
Load Estimation for Rating of Bridges
More sustainable bridge infrastructure can be achieved by eliminating costly and unnecessary replacement or overly zealous upgrading of ageing bridges. Estimates of current safety of bridges or their remaining service life are critically dependent…