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Research by ROSE Students
Below, the titles of MSc Dissertation and Individual Study projects carried out by our
students are listed. As expected, the range of themes under investigation is quite
broad; a natural reflection of the multidisciplinary character of the ROSE School. For
further information on each one of these projects, click on the titles listed below.
MSc dissertations & Individual Studies - Year 2004
Displacement-based design of continuous concrete bridges under transverse
seismic excitation
Bidirectional modelling of high-damping rubber bearings
Record selection for nonlinear seismic analysis of structures
Seismic vulnerability of masonry arch bridges
Dynamic behaviour of reinforced concrete frames designed with direct
displacement-based design
Rocking isolation of bridge piers resting on spread foundations
Displacement capacity of reinforced concrete columns with limited shear resistance
Probabilistic implementation of a mechanics-based procedure for seismic risk
assessment of classes of R.C. buildings
Seismic analysis of the structure of an underground railway station including SSI
Equivalent viscous damping equations for direct displacement-based design
An Isogeometric Analysis Approach for the Study of Structural Vibrations
Design of a dynamic and pseudo-dynamic testing facility
Effects of column base behaviour on the overall response of steel moment frames
MSc dissertations & Individual Studies - Year 2003
Seismological criteria for selecting and scaling real accelerograms for use in
engineering analysis and design
FRP seismic retrofit of square hollow seimic bridge piers
3D pushover of irregular reinforced concrete buildings
Shape-memory alloy devices in earthquake engineering: mechanical properties,

Development of finite element technologies for nonlinear static and/or dynamic
analysis of structures
Experimental and analytical work on reinforced concrete structures
Assessment and retrofitting of beam-column and flat slab-column joints
Assessment, repair and strengthening of reinforced concrete buildings
Assessment of existing pre-cast concrete buildings
Vulnerability evaluation, at urban scale, of existing reinforced concrete buildings
(using mechanical or mechanical-empirical approaches)
Experimental and analytical work on reinforced concrete bridges
Assessment of frame and arch bridges
Assessment, repair and strengthening of hollow bridge piers
Carbon fibre strengthening of bridge slabs
Isolation systems for bridges
Relevance of re-centering capacity of isolating devices
Experimental and analytical work on masonry arch bridges
Interaction between infill material and parapet walls in relation with a possible out-
of-plane collapse
Influence of non-synchronous input or soil incoherency
Relevance of vertical acceleration in relation to arch-pier interaction, and its
potential for damage to the arch structure
Experimental and analytical work on masonry buildings
Performance-based assessment of existing masonry buildings (based on pushover
analysis methods)
Out-of-plane response and collapse mechanisms of masonry walls
Seismic assessment of historical structures
Engineering seismology
Regional estimation of macro-seismic attenuation in Italy
Estimation of local amplification effects using historical MCS intensities
Estimation of earthquake recurrence laws for seismic hazard analysis
Catalogue incompleteness and its effects on seismic hazard

However, the majority of such research has not considered the case of square hollow
section bridge piers. These are very common in Europe, featuring also a construction
date between the ‘50s and ‘70s, when seismic zones were often not recognized,
resulting thus in piers designed for gravity loads alone. As a consequence, these
bridge piers call now for large strength and ductility enhancements in order to meet
the prerequisites of modern earthquake resistant regulations.
In addition, a number of such bridges have been subjected to earthquakes resulting,
in some instances, in failure mechanisms due to: shear, combined flexure/shear and
insufficient lap splice. It is thus clear that the development of efficient structural
intervention methods to be applied in the repair and strengthening of square hollow
bridge piers is of great importance and relevance, in particular within the framework
of European transport infrastructures.
Within the scope of the current research, quasi-static cyclic tests were performed
with increasing levels of drift applied to scaled specimens of FRP retrofitted piers,
taking trace of the force-displacement diagram and flexural and shear deformations.
Further, the effect of FRP intervention in the level of section confinement, the
efficiency of the anchorage, the energy dissipation, the achieved ductility and
horizontal strength of the retrofitted piers were all thoroughly scrutinised, through
comparison with the response of previously tested specimens without FRP
application. Finally, the experimental results were also employed to assess the
adequacy of currently available design formulae, calibrated through experiments on
solid section piers, in the prediction of the capacity of retrofitted hollow bridge piers.
You may download (4700 kB) a digital version of this MSc dissertation here.
Shape-memory alloy devices in earthquake engineering:
mechanical properties, constitutive modelling and numerical
simulations
Student: Davide Fugazza
Supervisors: Prof. F. Auricchio, Dr. A. Pavese, Dr. L. Petrini
Abstract
Shape-memory alloys (SMAs) are a class of solids showing mechanical properties not

Simple empirical relationships are available in many design codes to relate the height
of a building to its fundamental period of vibration. These relationships have been
realized for force-based design and so produce conservative estimates of period such
that the lateral shear force will be conservatively predicted from an acceleration
spectrum. Where assessment of a structure is concerned, it is the displacement
demand that gives an indication of the damage that can be expected, this
displacement would be underestimated with the use of the aforementioned period –
height formulae. Furthermore, the period of vibration of interest in assessment is the
yield period, which is calculated using the yield stiffness, also often referred to as the
cracked or elastic stiffness. The derivation of a yield period – height formula for use
in displacement-based assessment of European buildings is thus the focus of this
dissertation. Analytical fibre element models of RC frames of varying height have
been developed and the yield period has been sought using eigenvalue, pushover
and dynamic analyses.