Pipeline Field Experiment at Parkfield, CAby Jeremy Isenberg, Weidlinger Assoc, United States,
Edward Richardson, Weidlinger Assoc, United States,
Hiroyuki Kameda, Weidlinger Assoc, United States,
Abstract: A field experiment designed to investigate the performance of buried pipelines at a fault crossing has been constructed near Parkfield, CA. The site was chosen to capitalize on the predicted recurrence of the 1966 Parkfield-Cholame earthquake sequence. Strain gages have been attached to two segments of welded steel pipe to measure length changes and flexure. Displacement transducers have been installed in jointed ductile iron pipe to measure rotation and extension at the joints. Data are recorded when preassigned threshold levels of strain in selected trigger channels are exceeded. Since seismic activity has been low, no records of pipeline response have been obtained yet. Three strong motion seismographs, obtained through a cooperative agreement with the Urban Hazards Research Institute of the University of Kyoto, Japan, make it possible to measure ground strains which will be correlated with pipe strains.
Subject Headings: Pipe joints | Steel pipes | Pipelines | Strain gages | Seismic tests | Pipeline crossing | Seismic effects | California
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