Geotechnical design is important to ensure good stability and bearing capacity of the
ground. A part of this is to make good forecasts of future settlements. Nowadays
most calculations are made in computer programs, such as Novapoint Geosuite
Settlement. Geosuite Settlement includes a variety of calculation models, where some
of the models include an addition of creep behaviour.
The main purpose of this diploma work is to compare the results from different
geotechnical settlement calculation models in Geosuite Settlement. As a reference
object, an undrained test bank on clay in Lilla Mellösa outside of the community
Upplands Väsby was selected. On this test site, the Swedish Geotechnical Institute
(SGI) has performed measurements of long-term settlements since 1947.
The result of this diploma work shows that the calculation models containing creep
give result more like the measured settlements, than the calculation models that do
not include creep. Despite of this, the measured settlement is greater than the
settlement in calculation models containing creep.
The most remarkable in this work are high excess pore pressures when using models
containing creep. These excess pore pressure, in the result of this work, also
decreases very slowly in time.
One conclusion of this diploma work, based on the obtained results of this study, in
comparison with other studies, is to use a calculation model containing creep, if the
conditions are similar to those at the test site Lilla Mellösa.
2016. , 81 p.
Öhman Mägi, Caroline, Bitr. universitetslektorAxelsson, Kennet, Seniorprofessor