og hovedoppgaver/proposals forslag for høsten 2012/våren ... - NTNU

NTNU GEOTEKNIKK – PROSJEKTFORSLAG FOR STUDENTER PÅ STUDIERETNING K OG BA 7
2012-C-7.
OFFSHORE SOIL-STRUCTURE INTERACTION TASKS FROM DNV
A: PLASTIC DEFORMATION OF CLAY AND SAND DUE TO CYCLIC LOADING IN
CONNECTION WITH STRUCTURAL WELL INTEGRITY DURING WELL OPERATIONS.
The work is expected to include a literature study and SPLICE-analyses.
Contact person in DNV: Jan Holme (jan.holme@dnv.com)
B: DYNAMIC DAMPING OF CLAY AND SAND IN CONNECTION WITH STRUCTURAL
WELL INTEGRITY DURING WELL OPERATIONS.
The work is expected to include a literature study and recommendations based on
this.
Contact person in DNV: Jan Holme (jan.holme@dnv.com)
C: PARAMETRIC STUDY OF SOIL MODELS FOR MONOPILES FOR WINDTURBINES.
Primary aspects to be studied are the effect of pile diameter, depth below terrain
surface and loading rate. The work is expected to include PLAXIS analyses and if
possible tests in the laboratory.
Contact person in DNV: Liv Hamre (liv.hamre@dnv.com)
DnV
Det norske
Veritas
More than one
student possible.
Bearing
Capacity of
Skirted
Foundations
D: DAMPING AND STIFFNESS OF SAND OR EROSION PROTECTION DEPENDANT ON
GRAIN SIZE AND LOAD RATE IN CONNECTION WITH MONOPILES FOR
WINDTURBINES.
Contact person in DNV: Liv Hamre (liv.hamre@dnv.com)
Load bearing capacity of foundations with skirts subjected to combined loads
including torsion moments. Classical Soil Mechanics has solutions for bearing capacity
of foundations subjected to vertical loads. Combined loading, including horizontal load
and overturning moments can also be solved using classical Soil Mechanics.
If the torsion moment is also present together with vertical and horizontal forces and
with overturning moments, no theoretical approach exists and numerical (finite
element) analyses must be carried to evaluate the foundation capacity.
The project task is to use simplified methods / computer programs (e.g. DIESEL) and
finite element PLAXIS 3D to study the effect of torsion moment on bearing capacity of
mud mat foundation with skirts.
The study can be further extended during Master project by using PLAXIS 3D analyses
to study the same effect on the capacity of “bucket foundations”.
Kontaktpersoner:
CorneliuAthanasiu Corneliu.athanasiu@multiconsult.no;
Steffen Giese steffen.giese@multiconsult.no;
Anders Bye: anders.bye@multiconsult.no;
Multiconsult
Ver. 02.05.2012