SETTLEMENT OF A HIGH EMBANKMENT AND OVERPASS STRUCTURE IN OTTAWA
SETTLEMENT OBSERVATIONS HAVE BEEN CONDUCTED OVER A 5 YEAR PERIOD ON A 20 FT. HIGH EARTH EMBANKMENT AND TWO HIGHWAY OVERPASS STRUCTURES FOUNDED ON SPREAD FOOTINGS OVER A THICK DEPOSIT OF LEDA CLAY. THE APPLIED STRESSES WERE CONSIDERABLY LESS THAN THE OVERCONSOLIDATION PRESSURE OF THE CLAY. IN THE FIVE YEARS SINCE CONSTRUCTION, SETTLEMENTS OF APPROXIMATELY 12 CM HAVE OCCURRED, OF WHICH ABOUT 4 CM OCCURRED IMMEDIATELY. THE OBSERVED SETTLEMENTS ARE COMPARED WITH SETTLEMENT PREDICTIONS ON THE BASIS OF VARIOUS TYPES OF LABORATORY TESTS. THE OBSERVATIONS INDICATE THAT SIGNIFICANT SETTLEMENTS OCCUR ON A LONG TERM BASIS AND CAN BE ATTRIBUTED TO A SLOW YIELDING OF THE CLAY STRUCTURE. PIEZOMETERS FAILED TO DETECT ANY EXCESS OF PORE WATER DUE TO SLOW PROCESS OF CONSOLIDATION. /CGRA/
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Supplemental Notes:
- Vol 6, No 1, PP 33-48, 6 FIG, 1 PHOT, 10 REF
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Authors:
- Burn, K N
- Publication Date: 0
Media Info
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Serial:
- CANADIAN GEOTECHNICAL JOURNAL
- Issue Number: 0
- Publisher: National Research Council of Canada
Subject/Index Terms
- TRT Terms: Clay; Embankments; Ground settlement; Overconsolidation; Overpasses; Piezometers; Pore water; Settlement (Structures); Spread footings
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00230955
- Record Type: Publication
- Source Agency: CANADIAN GOOD ROADS ASSOCIATION
- Files: TRIS
- Created Date: Jan 26 1970 12:00AM