Transmission Gully Bridge 20 temporary works
The Transmission Gully project comprises a new 27 km motorway located north of Wellington on New Zealand’s North Island. It is currently under construction and is due to open in 2020. The alignment traverses rugged terrain requiring large-scale earthworks and numerous bridges. The complexity of the project is compounded by the high seismicity of the area. Significant temporary works were required to enable the construction of Bridge 20. The excavation for Pier 1, the larger of the two footing excavations, required a sub-vertical cut face with a height of 22 m. Due to the fractured rock mass and steep terrain, the construction of the cut slopes involved consideration of geotechnical risks associated with rockfall, slope instability, and seismicity. The base of Pier 1 extends below the level of a creek, and required construction of an anchored sheet pile wall to retain the creek and underlying saturated alluvial soils.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9780994626103
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Authors:
- Clarke, S J
- Rutherford, T
- Salcher, M
- Habte, M
- McColgan, C
- Conference:
- Publication Date: 2019-4
Language
- English
Media Info
- Pagination: 383-8
- Monograph Title: Proceedings of the 13th Australia New Zealand Conference on Geomechanics Perth, Western Australia, 1-3 April, 2019
Subject/Index Terms
- TRT Terms: Bridge construction; Bridge piers; Case studies; Mechanically stabilized earth; Retaining walls; Seismicity; Soil stabilization
- Geographic Terms: Wellington, New Zealand
- ATRI Terms: Bridge construction; Bridge pier; Case study; Reinforced earth; Retaining wall; Seismic disturbance; Soil stabilization
- Subject Areas: Geotechnology;
Filing Info
- Accession Number: 01714781
- Record Type: Publication
- Source Agency: ARRB Group Limited
- ISBN: 9780994626103
- Files: ITRD, ATRI
- Created Date: Aug 26 2019 11:51AM