Engineering analysis and design software
Bridge design and engineering

Software Tour

Advanced elements, materials and solvers

Unrivalled state-of-the-art linear and quadratic element libraries; advanced material models; linear, nonlinear and seismic isolator joint models; direct and eigen solvers, and a fast solver option collectively allow all types of bridge engineering problem to be modelled and solved as efficiently as possible.

Advanced element libraries

  • Plate and shell elements for slab decks
  • Beams and shells for prestressed concrete, steel and composite construction
  • Solid elements for detailed modelling and studying local effects
  • Elements for cable stayed and suspension structures
  • Joint elements for linear and nonlinear joint models

Additional element information is given on the product specification page.

Advanced general material models

  • Isotropic including plastic, creep, damage, shrinkage, viscous, two-phase
  • Orthotropic including plastic, creep, damage, shrinkage, viscous, two-phase
  • Anisotropic and rigidity models
  • Temperature dependent models
  • Concrete models with opening and closing of cracks, concrete crushing, and strain softening based on fracture energy in 2D/3D
  • Concrete creep including AASHTO LRD 7th Edition, CEB-FIP Model Code 1990, EN1992-1-1:2004 Eurocode 2, IRC:112-2011 and creep only for Chinese creep model code.
  • Geotechnical models include Tresca, Von Mises, Drucker Prager, Duncan-Chang, Modified Cam-clay, Mohr Coulomb criteria with non-associative flow for soils and rocks, Volumetric deformation soil model (includes consolidation)
  • User-defined models and others

Joint material models

Joint material models are used in conjunction with joint elements to fully define the properties for linear, nonlinear and seismic isolator joints.

  • Linear joint models include those for spring stiffness only and for general joint properties having spring stiffness, mass, coefficient of linear expansion and damping factor. User-defined force/displacement and axial force dependent curves are supported.
  • Nonlinear joint models include elasto-plastic uniform tension and compression with isotropic hardening, elasto-plastic general with isotropic hardening, smooth contact, frictional contact, nonlinear user-defined, matrix properties, and others.
  • Seismic isolator joint models include viscous dampers (Kelvin and Four Parameter Solid), lead rubber bearings with plastic yield and biaxial hysteretic behaviour, friction pendulum system with pressure and velocity dependent friction coefficient and biaxial hysteretic behaviour, and others.


A Fast Solvers option (provided with all new sales) provides a range of state-of-the-art solvers for use with all LUSAS Bridge software products.

Load types and combinations

Find out more

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Software Information

  Bridge / Bridge plus
green_arrow.gif (94 bytes) Software overview
green_arrow.gif (94 bytes) Modelling in general
green_arrow.gif (94 bytes) Advanced elements, materials and solvers
green_arrow.gif (94 bytes) Load types and combinations
green_arrow.gif (94 bytes) Staged construction modelling
green_arrow.gif (94 bytes) Geotechnical / Soil-structure modelling
green_arrow.gif (94 bytes) Analysis and design
green_arrow.gif (94 bytes) Design code facilities
green_arrow.gif (94 bytes) Viewing results
green_arrow.gif (94 bytes) Software customisation

  Bridge LT
green_arrow.gif (94 bytes) Software overview

  Choosing Software
green_arrow.gif (94 bytes) Software products
green_arrow.gif (94 bytes) LUSAS Bridge LT
green_arrow.gif (94 bytes) LUSAS Bridge
green_arrow.gif (94 bytes) LUSAS Bridge Plus
green_arrow.gif (94 bytes) Software selection
green_arrow.gif (94 bytes) Software options

green_arrow.gif (94 bytes) Videos
green_arrow.gif (94 bytes) Case Studies

  Additional Information
green_arrow.gif (94 bytes) Linear and nonlinear buckling analysis
green_arrow.gif (94 bytes) Curved girder analysis
green_arrow.gif (94 bytes) Integral or jointless bridges
green_arrow.gif (94 bytes) Post-tensioning
green_arrow.gif (94 bytes) Concrete modelling
green_arrow.gif (94 bytes) Interactive Modal Dynamics
green_arrow.gif (94 bytes) LUSAS Programmable Interface (LPI)

  Example applications
green_arrow.gif (94 bytes) Footbridge design
green_arrow.gif (94 bytes) Rail solutions
green_arrow.gif (94 bytes) Soil-Structure Interaction Modelling

  General information
green_arrow.gif (94 bytes) Hardware specification
green_arrow.gif (94 bytes) Licencing and Networking options
green_arrow.gif (94 bytes) Software prices
green_arrow.gif (94 bytes) Documentation
green_arrow.gif (94 bytes) Links page

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LUSAS is a trademark and trading name of Finite Element Analysis Ltd. Copyright 1982 - 2019. Privacy policy. 
Any modelling and analysis capabilities described on this page are dependent upon the LUSAS software product and version in use. Last modified: July 12, 2019.