Engineering analysis and design software

1LUSAS for Cable Stayed Bridges

LUSAS for Cable Stayed Bridges

Marketing DepartmentLUSAS

Software Information

Why LUSAS for cable stayed bridges?

• Full linear and nonlinear analysis • Global and localised modelling of the structure• Full modal analysis on all, or parts of structure • Time step linear and nonlinear dynamics • Lumped mass modelling • Model proper cable analysis/behaviour • Staged construction modelling/analysis • Model differing degrees of member connectivity• Model damping of all, or parts of the structure

3LUSAS for Cable Stayed Bridges

Cable tuning analysis

• Cable tuning facility calculates the initial equilibrium state.– Where the dead load of the structure and the forces in the cable

combine together to produce a structure that is at rest in the correct location.

LUSAS for Cable Stayed Bridges 4

Cable tuning

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Cable tuning in action

6LUSAS for Cable Stayed Bridges

Staged construction modelling

• Only one model file need be created to carry out an analysis of every stage of construction or dismantling

• Activate / deactivate model features and associated attributes

• Evaluate structural changes, load applications, and effects of geometric and material nonlinearity, and time-dependent material effects .

• Produce construction history tables

7LUSAS for Cable Stayed Bridges

Time-stage analysis - Facilities

• Tree Definition of Time-Stages• Stages easily modified• View stages individually or

create animations• Stages can be activated and de-

activated

8LUSAS Post-tensioning and time stage analysis

Time-stage analysis - Facilities

• CEB-FIP Creep Model available

– Allows creep recovery• Define of age of concrete

and striking time• General creep models for

other materials

9LUSAS Post-tensioning and time stage analysis

Construction history tables• Allow for planning of construction dimensions to ensure final structure is the

shape required.• Also provide expected displacements when carrying out a dismantling analysis• Use for any type of structure• Specify points and loadcases of interest

– Time dependent effects (e.g. creep) can be included• Produce:

– Camber Table– Displacement History Table– Incremental Displacement History Table– Example tables follow

New facilities and improvements in LUSAS Version 15.1 1010LUSAS for Cable Stayed Bridges

Construction table reportingCamber table (absolute values)

Displacement history (absolute values)

Incremental displacement (relative values)

New facilities and improvements in LUSAS Version 15.1 1111LUSAS for Cable Stayed Bridges

Construction table – in use

New facilities and improvements in LUSAS Version 15.1 1212LUSAS for Cable Stayed Bridges

Paseo Bridge (Demolition)

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Paseo Bridge (Demolition)

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Animations of cable lowering sequenceThe latter stages of the demolition modelling

LUSAS for Cable Stayed Bridges

Paseo Bridge (Demolition)

• Localised modeling

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Tower base modelling

LUSAS for Cable Stayed Bridges

Bagley Street Pedestrian Bridge

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Bagley Street Pedestrian Bridge

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Representative time-history graphs produced from LUSAS analyses

Bagley Street Pedestrian Bridge

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Bending moment in pylon for a specific construction stage Vertical displacement in

top and bottom of steel box girder for a specific construction stageLongitudinal stress in steel box girder

for a specific construction stage

Red Gate Pedestrian Bridge

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Red Gate Pedestrian Bridge

20LUSAS for Cable Stayed Bridges

Red Gate Pedestrian Bridge

Benesch

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Pedestrian excitation

Wichita Footbridges

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I-70 Mississippi River Bridge

23LUSAS for Cable Stayed Bridges

Bob Kerrey Pedestrian Bridge

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LUSAS for Cable Stayed Bridges 25

Trinity River Corridor Bridges

Margaret Hunt Hill BridgeTrinity River Corridor ProjectDallas, Texas

LUSAS staged construction model

LUSAS for Cable Stayed Bridges 26

Trinity River Corridor Bridges

Horseshoe Project,Margaret McDermott Bridge

Lake Champlain

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Preliminary nonlinear buckling analysis

Preliminary stress analysis

West 7th St Bridge

“First Bridge of its kind in the world”

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West 7th St Bridge

Construction sequence modelling for a single span

Eigenmode analysis for a three lane loading assessment

Arch modelling methodology

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I-94 Gateway Bridge

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Other cable stayed bridge projects…

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Mersey Gateway ProjectQueensferry Crossing West Gate Bridge upgrade

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Baker BridgeCathedral Green FootbridgeMediaCity Footbridge

LUSAS for Cable Stayed Bridges

Queensferry Crossing

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Ongoing project under construction

Mersey Gateway Bridge

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Ongoing project under construction

West Gate Bridge (Upgrade)

Modelling of construction loading

34LUSAS for Cable Stayed Bridges

West Gate Bridge, (Upgrade)

LUSAS model showing the permanent load deflection

and cable creep

Live load modelling

Detailed modelling around cable anchorage

Stresses in anchorage plates

Analysis of bulb flat stiffened section of box

Bulb flat stiffened plates showing different types of strengthening

35LUSAS for Cable Stayed Bridges

MediaCity Footbridge

Ramboll

Pedestrian swing bridge36LUSAS for Cable Stayed Bridges

Cathedral Green Footbridge

Asymmetric cable stayed swing bridge37LUSAS for Cable Stayed Bridges

Baker Bridge

Hyder Consulting

38LUSAS for Cable Stayed Bridges

Redhayes Bridge

Parsons Brinckerhoff

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Navvies Bridge

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Navvies Bridge

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Bridge over River Labe

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Gwangyang Bridge

Envico Consultants43LUSAS for Cable Stayed Bridges

Storebaelt Bridge

De Miranda Associati44LUSAS for Cable Stayed Bridges

Namdo Bridge

Sambo Engineering Co Ltd45LUSAS for Cable Stayed Bridges

Royal Victoria Dock Footbridge

Techniker46LUSAS for Cable Stayed Bridges

Hungerford Bridge

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Novisad Swing Bridge

Cable stayed swing bridge48LUSAS for Cable Stayed Bridges

Gifford

Dee River Crossing

49LUSAS for Cable Stayed Bridges

So why use LUSAS?

• One software package. Any structure. One solution.– Cost-effective structural analysis including soil-structure interaction

• Feature-based modelling– Global and local modelling; mix element types in the same model

• Advanced nonlinear analysis– Geometry, material and contact modelling

• Customisation / Productivity– LUSAS Programmable Interface

• LUSAS is a trusted provider to industry leaders– and LUSAS Technical Support is simply “The best in the business”

LUSAS for Cable Stayed Bridges 50

Engineering analysis and design software

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Civil and Structural engineering

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Specialist Applications

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Find out more at www.lusas.com