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Stress in buried pipes from shear distortions
An analytical elastic solution is presented to evaluate the effects of an applied shear stress on buried pipes to better understand their performance during earthquakes. The solutions identify the relative importance of physical variables involved in the shearing problem. The problem was investigated for three conditions at the soil-pipe interface: (1) no slip, (2) complete slip, and (3) friction. Compared to an applied normal stress, the addition of a shear stress increases the magnitude of stress and displacement in a buried pipe. The location of the maximum stress is shifted by as much as 45 degree. An applied shear stress causes slippage to occur around significant portions of the pipe which leads to considerable soil yielding. Analytical results provide reasonable bounding solutions to the actual field conditions. The solutions were compared to case studies of flexible corrugated pipes shaken by the 1994 Northridge earthquake and were shown to adequately assess the observed pipe performance.
Stress in buried pipes from shear distortions
An analytical elastic solution is presented to evaluate the effects of an applied shear stress on buried pipes to better understand their performance during earthquakes. The solutions identify the relative importance of physical variables involved in the shearing problem. The problem was investigated for three conditions at the soil-pipe interface: (1) no slip, (2) complete slip, and (3) friction. Compared to an applied normal stress, the addition of a shear stress increases the magnitude of stress and displacement in a buried pipe. The location of the maximum stress is shifted by as much as 45 degree. An applied shear stress causes slippage to occur around significant portions of the pipe which leads to considerable soil yielding. Analytical results provide reasonable bounding solutions to the actual field conditions. The solutions were compared to case studies of flexible corrugated pipes shaken by the 1994 Northridge earthquake and were shown to adequately assess the observed pipe performance.
Stress in buried pipes from shear distortions
Davis, C.A. (author)
1999
12 Seiten, 16 Quellen
Conference paper
English
Stress in Buried Pipes from Shear Distortions
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