Mechanical behavior of a shallowly buried steel pipe during compaction procedure
Yadong Zhang, Ron Chik-Kwong Wong
In the proceedings of: GeoVirtual 2020: 73rd Canadian Geotechnical ConferenceABSTRACT: A steel pipe (Grade X52) of 0.6 m in diameter and 5.2 m in length was buried in a soil pit formed by three reinforced concrete walls and a curved masonry wall. The pipe was instrumented with strain gauges mounted externally at two pipe sections to measure both circumferential and longitudinal deformations. The mechanical behavior of the buried pipe was monitored throughout the compaction. The circumferential strains were generally higher than the longitudinal strains along the pipe axis. The upper and lower parts of the pipe were under tension and compression, respectively. The absolute strain values increased with the initial soil compaction up to the pipe crown level, then decreased when the backfill was compacted above the pipe. The curvature of the lower pipe ring increased, while the pipe crown was more curved compared to the initial circular shape. The pipe was deformed into an inverted “Y” shape.
RÉSUMÉ: Un tuyau en acier (Grade X52) de 0,6 m de diamètre et de 5,2 m de longueur a été enterré dans une fosse de sol rigide formée de trois murs en béton armé et d'un mur de maçonnerie incurvé. Le tuyau a été instrumenté avec des jauges de contrainte montées à l'extérieur sur deux sections de tuyau pour mesurer les déformations circonférentielles et longitudinales. Le comportement mécanique du tuyau enterré a été suivi durant le compactage. Les déformations circonférentielles étaient généralement plus élevées que celles le long de la longueur du tuyau. Les parties supérieure et inférieure du tuyau sont respectivement sous tension et compression. Les valeurs de déformation absolue ont augmenté initialement avec le compactage jusqu'au niveau du sommet du tuyau, puis ont diminué en raison du compactage du sol au-dessus du tuyau. Le tuyau a été déformé en forme de «Y» inversé.
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Cite this article:
Zhang, Yadong, Wong, Ron Chik-Kwong (2020) Mechanical behavior of a shallowly buried steel pipe during compaction procedure in GEO2020. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Zhang_GEO2020_73,
author = {Zhang, Yadong}, {Wong, Ron Chik-Kwong},
title = Mechanical behavior of a shallowly buried steel pipe during compaction procedure ,
year = 2020
}
title = Mechanical behavior of a shallowly buried steel pipe during compaction procedure ,
year = 2020
}