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Dismantling of the San
Francisco-Oakland Bay Bridge East Main Span
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Dismantling of
1930s steel bridge trusses and cantilever spans as part of
demolition phase 1 involving staged
construction modelling of the existing structure incorporating all
renovations made during its lifetime, and a detailed stage by
stage demolition analysis using to ensure safe removal
of the structure.
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"By identifying and
analyzing the critical steps in the planned dismantling sequence,
LUSAS proved to be an invaluable tool in helping us to evaluate
bridge stability and predict dismantling effects on a very large and
complex structure."
Nathan
Miller, Bridge Engineer,
Foothills Bridge Co
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West 7th Street Bridge
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Design and
analysis of what is believed to be the world's first precast
network arch bridge, involving post-tensioning analysis, eigen
buckling, nonlinear analysis and staged construction modelling.
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"Once
initial section sizing calculations had been performed, we then
used LUSAS to analyse numerous post-tensioning layouts for a
variety of construction stages... then, once a tendon layout that
satisfied all stress limits had been found, strength checks were
made and the tendon profile approved."
Dean Van Landuyt,
Principal Engineer, Texas Department of Transportation
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West Gate Bridge Upgrade
Strengthening of a major steel box
girder bridge for additional traffic loading, by cantilever
propping, internal stiffening, and post-tensioning; and
management of construction loads.
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"Having
a single global shell model meant that there was no need to worry
about specifying boundary conditions or applying suitable loading
as would be required for looking at regions of the structure using
separate localised models, and this was a big plus."
Peter Robinson,
Project Engineer, Flint & Neill
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Demolition of Paseo Bridge
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"Being able
to construct and deconstruct a major nonlinear structure like the
Paseo Bridge in a single analysis model was critical in the
success of the demolition."
Dr
David Byers,
President, Genesis Structures
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Mersey
Gateway Bridge
- Analysis of an illustrative design
of a 3-tower cable stayed bridge using line beam modelling to
investigate global effects and a staged construction analysis to
prove the design.
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Ramboll was appointed Lead
Consultant and Project Manager by Halton Borough Council to carry
out a route identification study and illustrative design for a new
crossing of the River Mersey in the UK. To assist with its
development of the proposed new bridge Gifford used LUSAS bridge
analysis software to carry out analytical studies to prove its
draft design.
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Seismic
analysis of viaduct substructures on the Dubai Metro
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"The use of precast
concrete elements for the deck and for key substructure
components, and the use of LUSAS software to assist with our
design process, all helped to ensure that the viaduct construction
progressed as planned."
David A Smith,
Regional Head of Bridge Engineering, Atkins
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Cable
stayed bridge over the River Labe at Nymburk
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"By using
LUSAS on this project we obtained an accurate assessment of the
deck displacements caused by the static and dead loads. The
easy-to-use modelling capabilities and the re-use of previously
defined load patterns helped enormously with this."
Václav Kvasnička,
Consulting
Engineer, Pontex Consulting Engineers Ltd.
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Rail track
interation analysis for the Honan high speed railway
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"Correct modelling of the
nonlinear behaviour of ballast, and of the interaction between the
ballast and the rail track is not easy to do manually, so the
LUSAS Rail Track analysis option, which handles this
automatically, was very useful to us in this respect".
Mr Jeongil Kim,
Engineering Manager, Saman Engineering
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Deck segment analysis for the Yi
Sun Sin Bridge
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Using LUSAS, all webs, flanges, ribs
and other small members in the 6 metre long deck segment were
modelled. From the detailed
LUSAS analysis it was seen that the main structural behaviour was in
the transverse direction, and, as result, it was seen that the initial
diaphragm design needed to be strengthened.
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Redesign of Estero Parkway Flyover
- Steel box girder redesign
of a two-span bridge resulting in large construction
cost savings for the client.
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"The use of LUSAS helped us
meet our design deadline and to prove an alternative bridge design
that will ultimately save the client a great deal of money in
construction costs."
Craig Finley,
President, Finley Engineering Group, Inc
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Advancing Segmental Bridge Technology
- Analysis and optimization
of post-tensioned precast concrete bridge segments
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"LUSAS Bridge has been a
great tool for us on this project. It allowed us to produce a
design that has major benefits for the client and contractor. We
would recommend its use to others wanting to enhance their
in-house design and analysis capabilities".
Craig Finley,
President, Finley Engineering Group Inc.
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Taiwan High Speed Railway
- Pile-soil interaction
modelling and automated model building for multi-modal
spectral response analysis of viaduct structures
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"The
versatility of LUSAS Bridge coupled with the technical
expertise within our Group helped produce an economical
design for the extreme seismic performance criteria of the
Taiwan project with its demanding programme and construction
constraints."
Kandiah
Kuhendran, Project Design Manager, FaberMaunsell
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Wacker Drive - Phase 2 Reconstruction
- Replacement of beyond-life
viaduct with new biaxially post-tensioned, high
performance concrete slab structure requiring vehicle
load optimisation for irregularly supported deck
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"Using
the LUSAS Vehicle Load Optimization facility expedited the
live load analyses for a highly repetitive task that would
have otherwise been extremely time consuming."
Dr Ihab
Darwish, Project Engineer, Alfred Benesch and Company
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Mississippi
River Bridge
- Numerous detailed analyses
including staged construction with creep and shrinkage
analysis of what, if built, would have been the 5th longest
cable stayed bridge in world
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"Modjeski and Masters
used LUSAS Bridge to assist with a number of global and
local analyses of the structure because of the advanced 3D
nonlinear, dynamics and staged construction facilities that
it offers for this type of work."
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Mustafa Inan Viaduct
- Linear and nonlinear
dynamic study of earthquake damaged structure for
potential future earthquake.
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"Gebze Institute of Technology,
used LUSAS Bridge to study
the effects of the earthquake on a number of the structures including a seismic assessment
study of the Mustafa Inan viaduct."
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Forsmo Bridge
- Assessment of a steel
truss arch railway bridge using iterative model
development from strain gauge results to assess
Ultimate, Serviceability and Fatigue Limit States.
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"Ramboll successfully
used strain gauge measurements on the Forsmo Bridge in
Sweden to fine-tune a LUSAS Bridge model prior to
carrying-out an in-depth assessment of the structure for a
proposed increase in freight train axle loading."
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Newark
High Speed Rail Bridge
- Detailed dynamics analysis
using Interactive Modal Dynamics techniques
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"LUSAS Bridge
analysis software was used to carry out detailed dynamic
analysis for their client Railtrack London North Eastern.
The Interactive Modal Dynamics (IMD) techniques used greatly
reduced the time required to assess the dynamic response of
the structure for numerous combinations of different moving
train loads and speeds."
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Storebaelt
East Suspension Bridge
- Modelling of suspension
bridge
construction process using nonlinear and dynamics
analysis
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LUSAS Bridge analysis software
was used to provide
advice and structural analysis on the construction of the bridge. Many static and dynamic geometrically nonlinear
LUSAS analyses were undertaken during the engineering construction process.
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Namdo
Bridge
- Linear static analysis to
optimise arch/girder stiffener arrangement
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"LUSAS is good at modelling this kind of
problem. Its shell and solid elements are easy to use, and the ability to plot results on
selected parts of the model allows us to check the stress levels in a very straightforward
manner. This is one of the many benefits in using LUSAS on this and other projects".
Joonsang Son,
Engineer, Sambo Engineering
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Vasco da Gama bridge and
approach viaducts
- Pile/soil interaction and
seismic analysis of a cable stayed road bridge and
associated approach viaduct structures
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Approach viaduct design for
the Vasco da Gama bridge
- Calculation of
reinforcement quantities for prestressed concrete
diaphragms under seismic loading
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