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Bridge Design Challenges on the Waikato Expressway Huntly Section, New Zealand
The Huntly Section is a new NZ$415M section of the Waikato Expressway running between Hamilton and Auckland. It will connect the recently completed Ngaruawahia and Ohinewai sections on a route that traverses the Taupiri Ranges within a deep cutting…
Wigram-Magdala Link Bridge: Low-Damage Details For a More Efficient Seismic Design Philosophy
The aftermath of the Christchurch earthquake highlighted difficulties in the assessment and repair of damaged plastic hinge zones in conventional reinforced concrete structures. Particular issues are uncertainty in strain history, low-cycle fatigue,…
Shear in Prestressed Concrete I-girder Bridges
Prestressed concrete I girder bridges constructed in the 1960s and 70s have the potential to restrict transport productivity because their AS 5100.7 assessments can be poor despite satisfactory inservice performance. The primary issue is the shear…
Monash Freeway Bridge Strengthening Project: Constructability of Carbon Fibre Rods Under Constrained Traffic and Environmental Conditions
Strict environmental requirements and the standard specification and procedure for installing carbon fibre bridge strengthening system have naturally led to the works being undertaken during warmer months and on sections of the bridge that have been…
Thermal Movements of Tasman Bridge
Tasman Bridge crosses the Derwent River joining Hobart to its eastern suburbs. It was built in the early 1960’s and reflects design concepts of the time. It is articulated so that the main viaducts are restrained by the abutments, with very slender…
Lessons from Bridge Performance Due to Ground Damage in Earthquakes
Transportation routes are key lifelines for the community and it is important to learn from damage to bridges in earthquakes. Ground damage was a major contributor to the damage to bridges, in the recent Wenchuan earthquake (China, 2008), the…
The New AS 5100.5
  • ABC2017-072-17
  • 21 Apr 2017
  • Bridges
The new AS 5100.5 Concrete has been heavily revised since its last issue in 2004.
Development of a New Concrete Girder for Road Bridges
The paper describes the development, design and construction aspects of a completely new precast, prestressed concrete girder for road bridges.
Reliability-Based Increases to Capacity Reduction Factors for Australian Standards AS3600 and AS5100
Capacity reduction factors (?) for flexure, shear and axial loadings are derived for reinforced and prestressed concrete structures based on a reliability-based calibration of the Australian Concrete Structures Standard AS3600. The structural…
Compressive Stress in Segmental Concrete Bridges and High Strength Concrete in New Codes
The current bridge design code, AS5100.5-2004, adopts concrete strength grades between 25MPa and 65MPa. The upper limit of 65MPa was an increase from 50MPa in the Austroads Bridge Design Code, 1992. Before that, the NAASRA Bridge Design…