Bridge analysis, design + assessment

Featured Application Area

 

LUSAS Bridge is used by engineers worldwide for all types of bridge analysis, design and load rating from simple slab deck bridges, steel trusses, integral bridges and bow-string arch bridges, through to box girder, movable, cable stayed and suspension bridges. It is used routinely for all types of "architectural" bridges with slender or curved shapes, and especially where dynamic loading is important. 


Case Studies

Illustrative uses of the software with the most recently added at the top. Country flags relate to the project's location.


Piano delle Rose

  • Design of a composite bridge deck for a 4-span viaduct comprising two longitudinal beams curved in plan, with K-shaped reticular transverse beams supporting an intermediate beam, and torsion bracing members.

"“The possibility of obtaining force and moment diagrams from a series of sections of a beam-shell model, coupled with the availability of generating influencing surfaces for the same sections, allowed us to model the bridge with transverse beams and torsion braces in their real position, fully considering the effects of the curved plan. The use of LUSAS with PontiEC4 allowed a fast and excellent optimisation of structural steel and of reinforcement steel.”

Federico Durastanti – Technical Manager Sintagma srl (Perugia - I)


The Kids' Bridge

  • Detailed structural analysis of a winding steel through girder bridge involving staged construction modelling, optimisation of member sizes, nonlinear analysis of steel connections and detailed assessment of pedestrian induced vibrations.

"The design of the Kids’ Bridge had a unique set of challenges specific to the site. Detailed analysis using LUSAS and collaboration with fabricators enabled the design team to challenge the status quo and design an economic and visually stunning structure."

Nicholas Keage, Principal Engineer and Michael Kakulas, Associate Director, AECOM


FLOW bridge

  • Development of a prototype modular carbon fibre footbridge with the potential to revolutionise new rail crossings. Using LUSAS allowed the design team to optimise the staged construction sequence, accurately predict structural behaviour, and evaluate key components using localised models.

"The ability to solve different analyses in the same model really eased the design workflow and made analysing an innovative and complex structure fun and enjoyable."

Ahmad Kamara, Network Rail


Dismantling of the San Francisco-Oakland Bay Bridge East Main Span

  • 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.

"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


Currie Road Bridge

  • Detailed modelling of a single span half-through steel girder railway underbridge with a 50 degree skew to reduce number of deck bearings used and assist with checks to specific design codes.

"Generating a full 3D finite element model using LUSAS allowed us to complete the design rapidly and efficiently, and optimize the section sizes with high precision." 

Dr Fabien Rollet, Senior Engineeer, Atkins


Dawlish Station Footbridge

  • Design and analysis of the first Fibre Reinforced Polymer (FRP) composite bridge installed at a mainline station in the UK that, on completion, became the first Grade II listed FRP bridge.

"LUSAS is my first-choice tool for any of the structural analysis we do. For the non-standard work we undertake we need a general-purpose finite element analysis package that is not narrowly tailored to a particular market segment. LUSAS fulfils that role, letting us analyse and design with materials or for applications not yet well defined in civil engineering codes."

Ian Smith, Director, Tony Gee and Partners


West 7th Street Bridge

  • 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.

"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


Red Gate Pedestrian Bridge

  • Design of a novel cable stayed pedestrian bridge that is suspended from the piers of a road bridge, involving staged erection analysis, assessment of extreme loading events, and pedestrian footfall analysis.

"Using LUSAS allowed us to accurately capture the behaviour of a very complex structure that included a curved and skewed alignment with cables that had both vertical and lateral inclinations."

Hossam Abdou, Vice President, Alfred Benesch and Company.


DART Blue Line Extension

  • Design of bridges on a 4.75 mile light rail extension involving rail track-structure interaction analysis of two multi-span precast concrete beam structures and the analysis of a steel through girder span.

"An independent verification of the thermal interaction results obtained using LUSAS for the Rowlett Creek bridge was carried out by engineers in another Gannett Fleming office using different software. The results were strikingly similar, verified the LUSAS modelling method, and illustrated just how efficient LUSAS is at modelling track-structure interaction effects for these types of bridges."

Eric Dues, Principal Engineer, Gannett Fleming Engineers and Architects, P.C


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.

"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


Movable Bridges

  • Illustrative projects involving 3D and 2D modelling of movable bridges and girders for design and load rating analysis

EC Driver used LUSAS to carry out a three-dimensional frame analysis of the double-leaf, trunnion bascule leaves to investigate the forces, moments, shears and reactions in the various members of the complex structure.

Olympic Park Bridges

  • Elastic critical bucking and nonlinear analysis of an exceptionally slender steel tied arch footbridge with steel plate hangers and a single-span integral highway bridge of composite steel box girder construction.

Using LUSAS, Atkins found that existing industry and codified guidance was not always sufficient to ensure that a structure with unusual buckling behaviour was correctly modelled and the behaviour correctly accounted for. 

Assessment of Brick Vaulted Arches at Glasgow Central Station

  • Linear elastic modelling of a multi-span vaulted arch structure for load assessment and nonlinear analysis of a single vaulted arch using a multi-crack concrete material model to confirm RA8 loading.

"Although there was new-build design work on this project, which might have grabbed the headlines from a photographer's point of view, the real crux of this project from a design/assessment perspective was being able to justify the new railway tracks over 90m of old vaulted arches."

Dr. Danny Boothman, Project Engineer, URS.


Chelsea Street Bridge

  • Construction engineering analyses for a vertical lift bridge including the determination of stresses and displacements during the launching of a massive steel truss.

The use of LUSAS helped us prove our erection design. Early communication between the client, Massachusetts DOT, the Contractor, J. F. White, and FINLEY created a design that took the Contractor’s strengths into account and maximized the use of existing support structures to create a reliable and efficient erection plan".

Jerry M Pfuntner, P.E., Finley Engineering Group, Inc


Twin Sails Bridge

  • World's first triangular-leaf lifting bridge.

Twin Sails Bridge is a novel steel bascule road bridge that spans a navigation channel linking Holes bay with Poole Harbour in the UK. Ramboll worked closely with architect Wilkinson Eyre and mechanical engineer Bennett Associates to develop the bridge concept and used LUSAS Bridge analysis software to assist with its design of the crossing.

Integral bridge analysis and design to Eurocode 4

  • Analysis and design of steel/composite integral bridges to optimise sizes of steel sections and slab reinforcement bars.

"The use of LUSAS with nonlinear joints modeling the active and passive pressure allowed us to have an integrated model of the deck and the abutments that will be used also for seismic analysis. The use of the steel and composite deck designer was mandatory to enable us to optimize the design in a reasonable amount of time in accordance with relevant Eurocodes."

L. Ferretti Torricelli, Bridge Design Department, Spea Engineering spa


MediaCityUK Footbridge

  • Design of a visually stunning, asymmetric cable-stayed pedestrian swing bridge.

MediaCityUK Footbridge is an asymmetric, cable-stayed, pedestrian swing bridge whose form and function was dictated by site constraints. The bridge comprises two spans: a main span, approximately 65m in length, which traverses the shipping channel of the Canal, and a 18m flared concrete-filled back span that forms the counterweight to balance the asymmetric spans during opening,

Navvies Bridge

  • Outline design and Category III design check to Eurocodes of a replacement cycle / footbridge involving linear and nonlinear buckling analyses and dynamic analyses for pedestrian and crowd loading.

"We used modal and transient dynamic analyses to ensure that the response of the structure would remain within the acceptable limits given by EN 1990, using pedestrian excitations from the UK National Annex to EN1991-2."

Antonio Di Caprio, Project Engineer, Capita Symonds.


Demolition of Paseo Bridge

  • Staged construction modelling of a self-anchored suspension bridge incorporating all renovations made to the structure during its lifetime and subsequent demolition analysis to ensure safe dismantling.

"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


BEBO Arch System Modelling

  • Soil-structure interaction modelling and staged construction analysis of all backfilling and overfilling stages of the first BEBO arch structure to be built in the UK.

"BEBO engineers have a lot of experience in the use of finite element analysis software, not only for the design of projects involving soil-structure interaction, but also for a variety of materially nonlinear analysis, particularly of reinforced concrete structures. To assist us with the design of our range of BEBO Arch Bridge Solutions, and for our general structural analysis requirements, LUSAS meets our needs perfectly."

Gian Nick, Managing Director, BEBO Arch International AG


Bagley Street Pedestrian Bridge

  • Staged construction analysis involving post-tensioning, creep and shrinkage of a footbridge with a unique asymmetric design and asymmetry in two major planes.

"Modelling each stage of construction in LUSAS facilitated accurate geometry control and allowed us to confidently monitor the pylon bending demands."

John Boschert, Structural Engineer, Genesis Structures


New Mizen Head Footbridge

  • Structural assessment of historical ageing concrete through-arch structure and a staged construction analysis of a new replacement structure constructed during the sequential demolition of existing structure
"It was a very interesting project, not only because of its complexity, but because of the project timescale we used variations of our LUSAS model for assessment, design and construction over a period of 10 years."

Kieran Ruane, Technical Director, RPS Consulting Engineers Ltd.


Redhayes Bridge

  • Detailed linear, noninear and pedestrian moving-load and steady-state analysis to assist in the development of the first major highway infrastructure project designed and constructed to Eurocodes in the UK.
This 82m span twin-arch bowstring bridge was developed with the aid of LUSAS bridge analysis software and on completion was believed to be the first major highway infrastructure project designed and constructed to Eurocodes in the UK.

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.
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.

Ponte della Musica

  • Natural frequency, forced vibration analysis and nonlinear buckling analysis of a steel arch pedestrian bridge.

"In addition to using LUSAS for dynamic analysis of the structure; for both natural frequency and forced vibration, we also used it to perform nonlinear bucking analysis of the two large arches as well as for the design of sections using output derived under static load combinations, for both trams and buses, and also for large crowd loading."

Davood Liaghat, Bridge Team Leader at Buro Happold


Cathedral Green Footbridge

  • Design assistance, thermal assessment, and development of construction method for a cable stayed swing footbridge with a cranked back span.

Cathedral Green Footbridge is an award-winning pedestrian and cycle cable-stayed swing bridge. It has a 30m main span and an 18m cranked back-span that  counterbalances the main deck. The bridge rotates on a pintle bearing, with a central wheel to support its weight and swings to one side automatically when the river is in flood.

Seismic analysis of viaduct substructures on the Dubai Metro

  • Modelling of concrete viaduct structures involving seismic analysis to AASHTO LRFD to derive design moments from seismic and modified BS 5400 load combinations for use with pile and pier design.

"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


Analysis and design of footbridges for the Dubai Metro

  • 3D modelling and eigenvalue analysis of a large number of steel truss footbridges to derive mode shapes and mass participation factors to assist with their design.

"The use of a modular design approach in conjunction with detailed LUSAS analyses of the main footbridge types enabled us to design the large number of footbridges required for the project in a very timely and efficient manner."

David A Smith, Regional Head of Bridge Engineering, Atkins


Rail track / structure interaction analysis for the Dubai Metro

  • 2D modelling of rail / structure interaction to the UIC 773-4 code to verifify spreadsheet calculations and prove otherwise potentially problematic results.

"By using LUSAS to investigate these span arrangements we got a more accurate assessment of the rail track interaction effects and obtained values that did not exceed design criteria"

Rachel Jones, Atkins


Analysis and design of Avenues Walk Flyover

  • Detailed 3D analysis including investigation of lower lateral bracing requirements and uplift analysis of one of the longest and most highly curved single span girder bridges in the world.

“LUSAS proved to be a valuable tool for the project. We especially enjoyed the ability to model the various stages of construction and in-service loading."

Samuel N. Spear, GAI Consultants


Baker Bridge

  • Staged construction modelling of a low-cost footbridge with time step analysis of pedestrian crowd loading

Baker Bridge is an excellent example of a practical but eye-catching cable stayed footbridge designed for rapid erection and for a relatively low overall cost. LUSAS Bridge analysis software was used to assist with the design of the bridge by modelling all stages of the construction sequence.

Making the most of Eurocodes for critical buckling analysis

  • Investigations into the implications of UK engineers changing to Eurocodes for bridge design and comparison of analysis of first and second order effects for critical buckling analysis.

"Not only did the nonlinear LUSAS model give results almost identical to the actual physical test specimen but it also showed that the EN 1993-1-5 rules for stiffeners were very conservative for this particular beam, and the BS 5400 Part 3 predictions even more so."

Chris Hendy, Head of Bridge Design and Technology, Atkins


Semi-automated design of composite bridge decks

  • User-created wizards to speed-up composite bridge deck modelling, composite cross-section property calculation, and design checking to Italian codes of practice.

"Many composite bridges have been analysed by Alhambra using LUSAS Bridge, and in doing so the number and quality of the wizards created and used for this purpose has increased so that they have now become a very productive modelling tool."

Carlo Margheriti, Manager, Alhambra srl


Cable stayed bridge over the River Labe at Nymburk

  • Detailed 3D modelling to analyse live load effects on a longitudinally prestressed extradosed bridge with good correlation being obtained with static and dynamic load tests.

"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.


Rail track interation analysis for the Honan high speed railway

  • Evaluation of induced rail stresses and track displacements on a 1.8km long viaduct structure from rail temperature, acceleration and braking loading.

"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


Deck segment analysis for the Yi Sun Sin Bridge

  • Linear static analysis and optimisation of steel box girder deck segments for what, when constructed was the 4th longest suspension bridge in the world.

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.

Redesign of Estero Parkway Flyover

  • Steel box girder redesign of a two-span bridge resulting in large construction cost savings for the client.
"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


Advancing Segmental Bridge Technology

  • Analysis and optimization of post-tensioned precast concrete bridge segments
"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.


Wichita's Riverfront Footbridges

  • Staged erection analysis of two complex post-tensioned bridge structures involving 3D linear and nonlinear analysis and cable tensioning optimisation.
"We used LUSAS Bridge exclusively for the erection engineering of the Wichita Bridges and obtained excellent correlation between the on-site cable stayed measurements and the values that LUSAS predicted for lift-off"

Dr. David Byers, President, Genesis Structures


Michigan's I-94 Gateway Arch Bridges

  • Optimization of arch profiles, vehicle load optimisation, and examination of hanger forces and stressing requirements

"The arch optimization phase was greatly enhanced by the result processing facilities in LUSAS and the ease with which the geometrical outline of the structure could be manipulated."

Dr Hiba Abdalla, Senior Designer, Alfred Benesch


Automated track-structure interaction analysis

  • Fast assessment of track/bridge interaction forces in rails from thermal and in-service train loading
A LUSAS product option, permits track-structure interaction analysis to the International Union of Railways Code UIC 774-3. It allows models to be automatically built from data defined in MS Excel spreadsheets, an analysis to be run, and results rapidly obtained in spreadsheet or LUSAS results file formats.

Pilsen Footbridge

  • Analysis and assessment of the behaviour of a dynamically sensitive footbridge to pedestrian loading with and without the installation of a tuned mass damper.

"By using LUSAS we obtained a good correlation of the measured frequencies and successfully designed and tested a tuned mass damper to restrict deck movement for all the pedestrian loadings that were considered." 

Milan Kalný, Technical Director, Pontex Consulting Engineers Ltd.


Whitacre Bridge

  • Post-continuity live, earth pressure and thermal load assessments for an integral bridge replacement of an existing masonry structure

"Detailed analysis of this integral abutment bridge provided us with a better understanding of the behaviour of the structure under the imposed loadings. LUSAS made it easier for us to assess many different variations of loading, particularly earth pressure and temperature, and also allowed us to study them in more detail than we could have done using alternative methods."

Sameer Khan, Principal Engineer, Tony Gee and Partners


Automated Design of Railway Culverts

  • Use of LUSAS scripting facilities to automate model building and design/checking of railway culverts to Italian bridge loading and reinforced concrete codes of practice
"The script developed significantly speeds up the analysis of a typical "simple" structure, such as a railway culvert ... and the quality of the analysis is improved significantly also."

Carlo Margheriti, Manager, Alhambra srl


Wellington Street Swing Bridge

  • Assessment of a historic cast iron swing bridge and development and analysis of strengthening options prior to refurbishment
Pell Frischmann used LUSAS Bridge analysis software to create 3D models to assist with its analysis of various strengthening options that led,.ultimately, to the bridge being re-furbished, strengthened, and brought back into full working order.

Helix Bridge, Paddington Basin

  • Static analysis of a steel and glass retractable footbridge

"Finite element analysis with LUSAS was essential on this project and proved that the differential movement between the glass and the steel helix was within the strain limits of the silicon adhesive."

Phil Snowsil, Senior Design Engineer, Davy Markham


Bellmouth Passage swing bridges
  • Analysis of construction process and installation of glass and steel swing footbridges with calculation of pre-camber required to ensure correct closure

"Analysis with LUSAS was needed in order to calculate the amount of pre-camber required to ensure closure due to a 120mm deflection along the length of the cantilever span."

Phil Snowsil, Senior Design Engineer, Davy Markham


Taiwan High Speed Railway
  • Pile-soil interaction modelling and automated model building for multi-modal spectral response analysis of viaduct structures

"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


Greenside Place Link Bridge

  • Static, nonlinear buckling and natural frequency analysis of a tubular steel lattice footbridge

"Because of the complex nature of the structure and its S-shaped form, it would not have been possible for us to be sure of the exact stresses and forces in the helical members without the use of LUSAS."

Iva Trifkovich, Bridge Engineer, Buro Happold Consulting Engineers


Watergate Bridge

  • Linear and nonlinear buckling analysis and localised connection modelling for a steel arch road bridge

"LUSAS was used throughout the design, from preliminary sizing of members right through to the detailed design of the more complex fabricated elements. It helped us to provide the client with an efficient, aesthetically pleasing structure."

David Doyle, Structural Engineer, Roughan & O’Donovan


Neasden Lane overbridge

  • Successful linear analysis re-assessment of bridge deck previously failed for 40 tonne vehicle loading

 

"We found it quick and simple to upgrade an existing model in order to include new features or de-activate existing ones within a 3D model. In addition the results processing facilities were particularly useful in identifying the critical areas of the deck."

Sameer Khan, Senior Engineer, Tony Gee & Partners


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

"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


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
"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."

Mustafa Inan Viaduct

  • Linear and nonlinear dynamic study of earthquake damaged structure for potential future earthquake.
"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."

Forsmo Bridge, Sweden

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.
"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."

Falkirk Wheel

  • Linear and nonlinear analysis of moving parts of the world's first rotating boat lifting bridge

"We needed assurance that the axially loaded joint ( in the main axle situated just inside the clawed arm) would not prise apart, and the results from the LUSAS model formed a vital part of this assurance."

Richard Prosser, Project Engineer, Tony Gee and Partners.


Kingston Bridge widening project

Widening of Kingston Bridge

  • 2D plain stress analysis of reinforced concrete arch bridge widening scheme.

Newark High Speed Rail Bridge

  • Detailed dynamics analysis using Interactive Modal Dynamics techniques
"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."

Novi Sad Friendship Bridge

Novi Sad Friendship Bridge

  • Global and local analyses of a cable stayed swing footbridge
"Using LUSAS was the only viable way of analysing the structure for the multitude of loadcases that had to be considered - in effect, we couldn't have done it any other way."

Karim Yngstrom, Buro Happold


Storebaelt East Suspension Bridge

  • Modelling of suspension bridge construction process using nonlinear and dynamics analysis
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.

Namdo Bridge

  • Linear static analysis to optimise arch/girder stiffener arrangement

"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


Glass Bridge, Coventry

  • Eigenvalue analysis of a spiral-ramped tubular steel footbridge
LUSAS finite element analysis was used to investigate the response of the structure and in particular to ascertain the modes of vibration for the 40m-long unsupported length of the spiral section.

Gateshead Millennium Bridge

  • Staged construction and nonlinear dynamic analysis of a cable stayed opening footbridge

"Using LUSAS was essential on the design of this bridge because a full 3D staged construction analysis to model the construction sequence, and a step-by-step integration with large angles, to model the opening and closing sequence was required."

Shapour Mehrkar-Asl, Project Engineer, Ramboll


Hungerford Bridge Millennium Project (Photo Copyright Hayes Davidson / Nick Wood)

Hungerford Bridge Millennium Project

  • Dynamic analysis of cable stayed footbridge with assessment for deliberate vandalism
The Hungerford footbridges give London a genuinely useful and attractive new river crossing, and a fitting landmark for the new millennium.

York Millennium Footbridge

York Millennium Bridge

  • Linear, nonlinear and dynamic analysis of a cable stayed footbridge with staged construction checks

 

"By using LUSAS, the entire philosophy of the design, and of pushing back the boundaries of engineering, could be met. The computer modelling enabled us to provide a very slender, elegant, and cost-effective structure that previously could not have been designed with confidence."

Des Mairs, Partner, Whitby Bird


Bridge assessment of box girder diaphragms with weak welds

  • Nonlinear yield check analysis of box girder crossheads on viaduct structures proving strengthening work was unnecessary

 


Model of River Lune Millennium Bridge

River Lune Millennium Bridge, Lancaster

  • Linear and dynamic analysis of a cable stayed footbridge with local analysis of mast

Bridge at London Road, Hackbridge

Bridge assessment for plate girder buckling

  • Buckling assessment of a steel girder bridge for 40 tonne lorries

Artists Impression

Lockmeadow Footbridge

  • Response time history analysis of a cable stayed aluminium footbridge for comparison with design codes

Model of Royal Victoria Dock Bridge

Royal Victoria Dock Footbridge

  • Dynamic analysis of a cable stayed footbridge using local and global modelling

Integral abutment bridge design

  • Global analysis and soil structure interaction of an integral abutment bridge structure

Vasco da Gama bridge and approach viaducts

  • Pile/soil interaction and seismic analysis of a cable stayed road bridge and associated approach viaduct structures

Approach viaduct design for the Vasco da Gama bridge

  • Calculation of reinforcement quantities for prestressed concrete diaphragms under seismic loading

Masonry arch assessment

  • Linear and nonlinear analysis of a medieval masonry arch structure to prove load capacity

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green_arrow.gif (94 bytes) Software overview
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green_arrow.gif (94 bytes) Footbridge design
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