The Library
Measuring deformation performance of geogrid reinforced structures using a terrestrial laser scanner
Tools
Scotland, Ian, Dixon, Neil, Frost, Matthew W., Wackrow, Rene, Fowmes, Gary J. and Horgan, G. (2014) Measuring deformation performance of geogrid reinforced structures using a terrestrial laser scanner. In: 10th International Conference on Geosynthetics , Berlin, 21-24 Sep 2014. Published in: 10th International Conference on Geosynthetics, ICG 2014 pp. 2042-2049. ISBN 9781510825086 .
Research output not available from this repository.
Request-a-Copy directly from author or use local Library Get it For Me service.
Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....
Abstract
Geogrid Reinforced Structures (GRS) are inherently flexible and although the design for ultimate limit state is relatively mature, GRS are often defined by their deformation performance, in the serviceability limit state (Koerner and Koerner, 2013). Currently, serviceability design protocol does not determine or prescribe deformation limits for the built wall or slope, but rather imposes limits on the theoretical mobilised strain of geogrid reinforcement. Current understanding of the principle mechanisms for GRS deformation is weak and often the only way to assess the serviceability of structures is by the observational method. Typically this has been done with external surveying instruments such as total stations or internally using strain gauges, extensometers and inclinometers. Laser scanning has previously been used to measure the serviceability performance of conventional geotechnical structures and slopes and provided useful information (Mechelke et al., 2007) but has not yet been used on GRS. This paper assesses the potential of a Terrestrial Laser Scanner (TLS) to rapidly survey GRS. This assessment covers a range of structures including a 6.5 m high steel mesh faced retaining wall and a 3.6 m wrap faced structure. The measured behaviour obtained from this range of structures demonstrates the importance of facing stiffness on controlling deformations. Terrestrial laser scanning has potential because it is unobtrusive, only requiring lines of sight to the face and does not use targets located on the GRS. The system can be used to measure the position of the GRS face to within a noise range of ±5 mm (Kersten et al., 2008), across a large surface area from a single observation point in minutes. This paper assesses the application of using TLS to measure deformations during construction and in-service and proposes a standard scanning procedure. It also details experience gained surveying GRS constructed with a range of face systems and discusses accuracy and repeatability issues. It concludes with possible implications of using the TLS method for routine monitoring of GRS.
Item Type: | Conference Item (Paper) | ||||
---|---|---|---|---|---|
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | 10th International Conference on Geosynthetics, ICG 2014 | ||||
Publisher: | IGS International Geosynthetics Society | ||||
ISBN: | 9781510825086 | ||||
Official Date: | 2014 | ||||
Dates: |
|
||||
Page Range: | pp. 2042-2049 | ||||
Status: | Not Peer Reviewed | ||||
Publication Status: | Published | ||||
Reuse Statement (publisher, data, author rights): | cited By 0 | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | 10th International Conference on Geosynthetics | ||||
Type of Event: | Conference | ||||
Location of Event: | Berlin | ||||
Date(s) of Event: | 21-24 Sep 2014 | ||||
Related URLs: |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |