Abstract
Three pavement sections in southern Sweden were instrumented in
late 1991. Each section have instruments for measuring the strain
at the bottom of the asphalt layer, vertical stress and strains in
the subgrade and temperatures at different depths. The purpose was
to evaluate different theoretical methods for determining
stresses, strains and deflections in pavement structurers.Falling
Weight Deflectometer (FWD) test were done on the test sections,
and stresses and strains were measured both under FWD loading and
under a rolling wheel load. Different back-analysis procedures
were used to derive layer moduli from FWD testing. The forward
calculated stresses and strains were then compared to the measured
values. The tests were done under different climatic conditions,
the latest in November 1996, where almost all of the gauges were
still functioning.Of the different methods used for back-analysing
FWD data and for calculating the stresses and the strains, the
simple method based on Odemark's transformations and Boussinesq's
equations appeared to be as good as, or better than, the more
sophisticated methods using layered elastic theory or the Finite
Element Method.
Original language | English |
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Title of host publication | Proceedings, Volume II |
Place of Publication | Trondheim |
Publisher | Norwegian University of Science and Technology |
Publication date | 1998 |
Pages | 857-866 |
Publication status | Published - 1998 |
Event | 5th International Conference on the Bearing Capacity of Roads and Airfields - Trondheim, Norway Duration: 6 Jul 1998 → 8 Jul 1998 Conference number: 5 |
Conference
Conference | 5th International Conference on the Bearing Capacity of Roads and Airfields |
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Number | 5 |
Country/Territory | Norway |
City | Trondheim |
Period | 06/07/1998 → 08/07/1998 |