00469701

Component

http://onlinepubs.trb.org...trr/1987/1129/1129-001.pdf

https://scholar.google.co...GERS&publication_year=1987

The response of 160-mm-diameter, shallowly buried, unplasticized polyvinylchloride (uPVC) pipes to surface loading has been investigated in full-scale tests. Standard installation and loading conditions were used to study the influence of the surrounding soil below, beside, and above the pipe on pipe performance. The type of soil used to surround the pipes was found to have a considerable influence on pipe behavior. Various uncompacted granular materials provided good support, whereas uncompacted silty clay and silty sand did not. Compaction of the surrounding soil had a variable influence wholly dependent on soil type. Silty clay performed well only when thoroughly compacted in thin layers. Light compaction of a broadly graded granular soil improved performance slightly, whereas uniform gravel is generally considered to be unresponsive to compaction. The use of a thin bedding layer was shown to be beneficial in reducing pipe deformation, whereas a thicker bedding layer was shown to be less beneficial. The problems of measuring pertinent soil properties on site for fill selection are discussed and assessment of two empirical methods is made.

Publication of this paper sponsored by Committee on Subsurface Soil-Structure Interaction. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01418113

pp 1-11

1987

Transportation Research Record

030904510X

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Figures (11) ; Photos (3) ; References (10) ; Tables (2)

Deformation; Field tests; Flexibility; Granular materials; Performance; Pipe; Pipe laying; Polyvinyl chloride; Properties of materials; Silty clays; Silty sands; Soil compaction; Soil structure interaction; Soils; Underground structures

Flexible pipes; Soil properties

Geotechnology; Highways; Materials; I42: Soil Mechanics

TRIS, TRB, ATRI

Jul 31 1988 12:00AM

• DESIGN OF BURIED CULVERTS WITH STRESS-RELIEVING JOINTS
• NEW BEDDING FACTORS FOR VITRIFIED CLAY SEWER PIPES
• PASSIVE LATERAL EARTH PRESSURE DEVELOPMENT BEHIND RIGID WALLS
• PERFORMANCE OF THIN-WALL CONCRETE PIPE
• STRUCTURAL DESIGN OF BURIED CORRUGATED POLYETHYLENE PIPES
• WHEEL-LOAD-INDUCED EARTH PRESSURES ON BOX CULVERTS