nia in 1999-2000. Ice forces were measured
at the Norstˆmsgrund lighthouse offshore
Luleå in Sweden. In addition, ice strength
characteristics of first-year ice ridges were
measured close to Oulu in Finland. Publicdomain information is available in LOLEIF
web-pages and in the Publications-page.
STRICE (Measurements on Structures
in Ice) is a follow-up study for the LOLEIF
project. Pre-normative research was carried
out by continuing full-scale measurements
in the Gulf of Bothnia in 2001-2003. The
full-scale data will be released for publicity
in 2009. Public-domain information is available in STRICE web-pages and in the Publications-page.
COSAR (Choise of Arctic Offshore
Structures) and INTAS 97-1665 (Reliability of Engineering Facilities in the Arctic Seas)
were two subsequent research projects
funded by INTAS. VTT co-ordinated the
work of five institutes from Norway, Russia
and Ukraine to improve models that are
used to determine ice loads on Arctic Offshore structures. Basic information on these
projects as well as selected papers are available in the INTAS Publications-page.
NEST (Networking Studies on Ice and
Compliant Structures) is an EU funded
network project to stimulate co-operation
and to change information between European and Chinese researchers.The project
concentrates in studies of ice-induced vibrations of offshore structures. New fullscale data on vibrations of vertical as well
as conical structures is availalable in the Publications-page.
VIBRA (Ice Induced Vibrations of Marine Structures) is an experimenal study
supporting the projects ARKI and NEST.
Tests were made in the ARCTECHLAB at
the Hamburg Ship Model Basin in 2002
using a test structure that was sensitive to
ice-induced vibrations.The work was financially supported by the Human Potential
and Mobility Programme from the European Union through contract HPRI-CT1999-00035. The test report and conference papers describing the tests are available in the Publications-page.
ISO/TC67/SC7/WG8 (Arctic Offshore Structures) is an international project,
which aims at developing a new design code
for structures in ice-bound waters. VTT
participates in this work with a responsibility to lead a sub-group that will define the
recommended methods for ice load determination.
VTT’S MARITIME TECHNOLOGY
RESEARCH AND DEVELOPMENT
VTT (Technical Research Centre of Finland) is an impartial
expert organization that carries out technical and
technoeconomic research. The turnover is 210 M˛ and
personnel 2800. Our activities in the maritime sector cover:
-
structural integrity
structural monitoring
reliability of systems
passenger comfort
marine traffic safety
risk analyses
wind limit definitions
human technology interface
environmental engineering
manoeuvring characteristics
model and full scale tests
small craft design analysis
computational fluid dynamics
simulations and virtual prototyping
VTT
P.O.Box 1705
FI-02044 VTT
Finland
Phone +358 20 722 111
Fax +358 9 455 0619
E-mail: [email protected]
www.vtt.fi/
SEATEC 2005 49