Scholarly record
COMPARISON OF EXPERIMENTAL ARCHING PHENOMENA RESULTS OF SANDY SOIL WITH LIMIT EQUILIBRIUM METHOD
Abstract
The ratio of observed vertical stress to its theoretical value in a soil mass which has settlement potential could be defined as arching ratio. This phenomenon could be observed in some projects, such as earth-fill dams, tunnels, and piles. Arching in earthfill dams may results in hydraulic fracture due to increase of pore water pressure, is the most important result of arching. Hydraulic fracture causes internal cracking of clay core which in turn results in more water seepage. To evaluate the arching effect, an apparatus has been designed and manufactured which is called Arching Force Measurement Apparatus (AFMA).Several tests have been carried out to assess this phenomenon in a sandy-soil and to study the effective parameters on the problem such as relative density, height of soil sample in experimental soil container, and vertical overburden pressure. Finally, arching factor has been defined and calculated, and comparison has been made with limit equilibrium method.
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References20
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