Engineering analysis and design software
Bridge design and engineering

Case Studies

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. 

These case studies provide a number of illustrative uses of the software with the most recently added article at the top. Country flags relate to the project's location.


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 the safe removal of the structure.


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.


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.


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.


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.


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.


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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Movable Bridges

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


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.


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.


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.


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Twin Sails Bridge

  • World's first triangular-leaf lifting bridge.


Integral bridge analysis and design to EC4

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


MediaCity Footbridge

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


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.


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.


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.


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.


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

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.

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.

Ponte della Musica

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

Cathedral Green Footbridge

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


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.


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.


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.


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.


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Baker Bridge

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


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.


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.


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.


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.


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.


Redesign of Estero Parkway Flyover

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

Advancing Segmental Bridge Technology

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

Wichita's Riverfront Footbridges

  • Staged erection analysis of two complex post-tensioned bridge structures involving 3D linear and nonlinear analysis and cable tensioning optimisation.

Michigan's I-94 Gateway Arch Bridges

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

Automated track/bridge interaction analysis

  • Fast assessment of track/bridge interaction forces in rails from thermal and in-service train loading

Suyeong Bridge No. 1

  • Linear and dynamic analysis of a 3-span steel box girder road bridge

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.

Whitacre Bridge

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

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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

Wellington Street Swing Bridge

  • Assessment of a historic cast iron swing bridge and development and analysis of strengthening options prior to refurbishment

Helix Bridge, Paddington Basin

  • Static analysis of a steel and glass retractable footbridge

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

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

Greenside Place Link Bridge

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

Watergate Bridge

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

Neasden Lane overbridge

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

 


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

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

Mustafa Inan Viaduct

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

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.

Falkirk Wheel

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

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

Novi Sad Friendship Bridge

Novi Sad Friendship Bridge

  • Global and local analyses of a cable stayed swing footbridge

Storebaelt East Suspension Bridge

  • Modelling of bridge construction process using nonlinear and dynamics analysis

Namdo Bridge

  • Linear static analysis to optimise arch/girder stiffener arrangement

Glass Bridge, Coventry

  • Eigenvalue analysis of a spiral-ramped tubular steel footbridge

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Gateshead Millennium Bridge

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

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

Plashet Road Footbridge

  • Eigenvalue buckling analysis of steel plate pier designs to optimise the design

York Millennium Footbridge

York Millennium Bridge

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

 


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

Artist's impression

Vasco da Gama bridge and approach viaducts

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

Stresses in quarter model of diaphragm

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

Ambient Vibration Investigation and Modelling of the First Bosporus Suspension Bridge

  • Experimental and analytical studies of the dynamic response of the bridge with good correlation being obtained.

Bridge bearing analysis

  • Nonlinear analysis to prove the ultimate load capacity of bridge bearings for a major motorway structure.


Raith bridge photograph

Raith Road Bridge

  • Extraction of stresses from a major box girder bridge using the LUSAS scripting language for checking with design codes

Commercial Street Bridge

Bowstring arch for the Sheffield Supertram System

  • Linear and buckling analysis on a bowstring arch tram bridge and a number of post-tensioned segmental structures

Dee River Crossing

  • Linear and eigenvalue analysis of a cable stayed road bridge to aid with the design process


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