ISSN:
1477-9730
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Architecture, Civil Engineering, Surveying
Notes:
Since 1969 photogrammetric techniques have been employed as a means of obtaining precise measurements of surface movement of soil models spinning in a centrifuge at a speed of up to 45 m s-1. Over 100 soil model tests have been performed on about 12 different types of soil stability problem during this period. Tests have been monitored by a closed circuit TV system; two Zeiss (Jena) UMK 10/1318 cameras and a powerful flash unit have been employed to provide a succession of stereopairs.A brief summary of the theory of soil model similarity is presented, together with a description of the tests and their photographic and photogrammetric requirements. A method of recording measurements using a Kelsh plotter with a resulting accuracy of ± 0.2 mm is demonstrated.Settlement/heave gravity curves, resulting from photogrammetric measurements, are illustrated. The nature of the failure of soil models, as well as the prediction of similar behaviour on the full scale prototype, can be made from these curves.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1477-9730.1973.tb01188.x
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