Long‐Term Tieback Monitoring at Harvard Square
Publication: Journal of Geotechnical Engineering
Volume 114, Issue 3
Abstract
Tiebacks are used extensively for temporary lateral support for exterior walls of the new underground Harvard Square transit station in Cambridge, Massachusetts. Although not required for permanent conditions, some tiebacks having construction load cell monitoring were left in place after construction was completed. These tiebacks consisted of regroutable, multistrand tendons having design capacities of 282 kips (1,250 kn). All tiebacks have been subjected to a 30-min hold test to verify capacity. After five years' time, the instrumented tiebacks are observed to be holding the design loads.
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References
1.
Cheney, R. S. (1984). “Permanent ground anchors.” Report No. FHWA‐DP‐68‐1R, U.S. Department of Transportation, Federal Highway Administration, Washington, D.C., Nov.
2.
Hansmire, W. H., Russell, H. A., Rawnsley, R. P., and Abbott, E. L. (1984). “Instrumentation and evaluation of slurry wall construction, vol. I, interpretation of field measurements.” Report No. FHWA/RD‐84/053, U.S. Department of Transportation, Federal Highway Administration, Washington, D.C., Jun.
3.
Rawnsley, R. P., Russell, H. A., and Hansmire, W. H. (1985). “Instrumentation reliability at Harvard Square station.” Transportation Research Record, 1004, 27–34.
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Schnabel, H., Jr. (1982). Tiebacks in foundation engineering and construction. McGraw‐Hill Book Co., Inc., New York, N.Y.
Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 114 • Issue 3 • March 1988
Pages: 344 - 348
Copyright
Copyright © 1988 ASCE.
History
Published online: Mar 1, 1988
Published in print: Mar 1988
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