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IStructE Technical Meeting: Seismic Design of Bridges in Australia

  • University of Melbourne Parkville, VIC, 3052 Australia (map)


Displacement-based seismic design to AS5100.2: 2017 - simplified

The method’s empirical basis and a comparison of force-based and displacement-based design methods.


An introduction to:

  • Non-linear push-over analysis.
  • Capacity-protection and ‘over-strength’ design.
  • Performance-based design.
  • Avoiding brittle failure.

A Commentary on:

  • Use of the displacement-based design approach for existing structures which ‘fail’ according to the force-based approach.
  • Application of the displacement-based design approach in respect of rationalising reinforcement in bridge piers.
  • Simplified application of AS5100.2 -2017.
  • Simplified finite-element approaches for push-over design.
  • Other modelling and detailing tricks to simplify capacity-protection and performance-based design.


Bruce Gibbens
Principal Bridge Engineer, BG&E Melbourne

Bruce has 23 years’ experience in bridge design for major Australian projects in all States. He has designed bridges in regions of high seismicity – including British Columbia, Hawaii, New Zealand, and Fiji. 

Bruce developed his understanding of displacement-based seismic design on the basis of Caltrans’ requirements when living in California.

Bruce is a member of Standards Australia Committee BD-090 “Bridge Design” contributing towards the April 2017 revision of the Australian Bridge Design code.


Event Details

Location: Melbourne University, Engineering Block, Lecture Theatre C1 (4th Floor)
Time: 6:15pm - 7:30pm
Tickets: Bookings essential via Eventbrite below
Cost: Free of charge to members and non-members