Stabilisation of Former Trunk Road Embankment Using Combined Structural and Eco-engineering Strategies
Mass wasting events and failures on the earthworks adjacent to trunk roads are becoming more frequent as a result of climate change and increased volume of transport. This paper describes the geotechnical aspects of stabilisation of a 750 m long and up to 55 m high coastal slope in Scotland bisected by a former trunk road with a history if instability and subsidence. Ground investigations, monitoring, specimen and detailed design considerations are discussed in the light of geo-environmental, financial, temporal, sustainability and risk considerations. The geotechnical design had to consider the local and global stability of the slope as well as the effect of potential climate change, land use and traffic volume changes. Additionally, the stabilisation options for the earthworks supporting the road were constrained by the requirements of the local authority and statutory undertakers. The detailed design for landslide and erosion prevention comprised extensive drainage measures and soil nailing designed to be installed within the existing slope surface, utilising an innovative head assembly, recessed within the slope and covered with pre-seeded biodegradable ‘grow bags’ making them ‘invisible’, providing a green slope finish, and minimising the visual impact of the works on the natural surrounding. The sustainable use of vegetation for slope stabilisation is highlighted through the use of eco- and ground bio-engineering strategies in the design and construction of stabilisation measures against shallow slope instability and erosion.
- Record URL:
-
Availability:
- Find a library where document is available. Order URL: http://master.grad.hr/cetra/ocs/index.php/cetra3/cetra2014/schedConf/presentations
-
Supplemental Notes:
- Abstract reprinted with permission of University of Zagreb Faculty of Civil Engineering, Department of Transportation.
-
Corporate Authors:
University of Zagreb
Faculty of Civil Engineering, Department of Transportation
Kačićeva 26
Zagreb, Croatia 1000 -
Authors:
- Mickovski, Slobodan B
-
Conference:
- 3rd International Conference on Road and Rail Infrastructure – CETRA 2014
- Location: Spilt Dalmatia, Croatia
- Date: 2014-4-28 to 2014-4-30
- Publication Date: 2014-4
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; Maps; References;
- Pagination: pp 559-565
- Monograph Title: Proceedings of the 3rd International Conference on Road and Rail Infrastructure – CETRA 2014: Road and Rail Infrastructure III
-
Serial:
- Proceedings of the International Conference on Road and Rail Infrastructure CETRA
- Publisher: University of Zagreb
- ISSN: 1848-9850
Subject/Index Terms
- TRT Terms: Asset management; Climate change; Embankments; Erosion; Landslides; Primary highways; Slope stability; Soil nailing; Traffic volume
- Geographic Terms: Scotland
- Subject Areas: Geotechnology; Highways; Planning and Forecasting; I42: Soil Mechanics;
Filing Info
- Accession Number: 01581213
- Record Type: Publication
- Files: TRIS
- Created Date: Nov 24 2015 9:28AM