Tuesday 28 February 2012
Hunter Expressway Alliance: Interface between geotechnical constraints and viaduct design and construction
| Technical Presentation by the Civil & Structural Engineering Panel EA Sydney Division. | |
| Venue | Zenith Theatre, Corner Railway and McIntosh Streets Chatswood, |
| Date | Tuesday 28th February 2012, 5.30 pm for 6.00 pm to 7.30 pm |
| Members Cost | Free |
| Non Members Cost | Free |
| Event Contact | Ken O’Neill |
| Contact Phone | 02 9465 5879 |
| Contact Email | ken.oneill@aurecongroup.com |
| Hosted By | Civil & Structural Engineering Panel |
Presentation Abstract:
The eastern section (F3 Freeway to Kurri Kurri) of the Hunter Expressway is being built under an alliance contract with NSW Roads and Martime Services, Thiess Pty Ltd, Parsons Brinckerhoff and Hyder Consulting. It is 13km and includes the construction of three viaducts through the Sugarloaf Range.
Three viaduct bridges are being constructed over abandoned mine workings. The strategies adopted for managing the subsidence risk include both filling of old mine workings and bridge design solutions. The subsidence challenges, the mine fill treatment design, and the development and implementation of the validation strategy will be discussed.
Despite extensive mine filling operations, the viaduct structures still had to cope with the impact of valley closures caused by far-field mine subsidence outside the area of treatment. The potential impact on construction programme was also of concern as the mine filling operations involved some extensive drilling in difficult terrain. The proposed Viaduct structural solution as well as the construction method chosen to limit the risk of potential delays will be discussed.
Speakers:
- Peter Chatburn, Alliance Manager (Thiess Pty Ltd)
- Olaf Stahlhut, Alliance Design Manager Mine Void Treatment, (Parsons Brinckerhoff P/L)
- Axel Armstrong, Allance Project Manager Viaducts (Thiess Pty Ltd)
Continuing Professional Development (CPD): This presentation may contribute toward CPD as per Engineers Australia criteria.
