LUSAS
Generate 2D and 3D continuum models of single and multi-span masonry arch bridges with semi-circular or segmental arches in a fraction of the time it takes to manually model the same structures.
Create models that include piers and abutments, with or without a skew, using linear or nonlinear materials.
Define models using a series of tabbed pages on which geometric values, material properties, any skew and optional train loading are specified.
Specify the type of model (2D or 3D) and analysis (linear or nonlinear) to generate a model using only the quantities applicable to the type of model and analysis chosen.
Once created, modify the model as required to incorporate changes to geometry or material properties, particular foundation conditions, or to assign code specific train or vehicle loads, or custom loading.
The continuum models produced are for “macro modelling” of masonry, where the masonry is considered as a continuous composite material – as opposed to “micro modelling” where each block and each mortar joint is modelled explicitly. The LUSAS concrete cracking and crushing material model may be used to approximate the cracking and crushing behaviour of masonry.
As part of creating a model, common features, such as those representing abutments, piers, fill, arch rings, spandrel walls, parapets etc., are grouped and named to allow for easy manipulation of the model, or selective viewing of results.
View stresses in lower parts of abutments, piers and arch rings
View regions of cracking and crushing.
View graphs of total load against displacement.
| Capability | Automated in Wizard? |
|---|---|
| 2D and full 3D modelling | YES |
| Skewed arches | YES |
| Single or multiple spans | YES |
| Abutments and piers, including hollow piers | YES |
| Haunching, spandrel and parapet walls | YES |
| Linear/nonlinear structural materials | YES |
| Load dispersal through a soil continuum | YES |
| Linear/nonlinear structural materials | YES |
| Train loading on one or more tracks | YES |
| Capability | Add to model or edit outside wizard? |
|---|---|
| Full nonlinear soil behaviour | YES |
| Saddle repair | YES |
| Helifix or Dywidag repairs | YES |
| Staged construction or deconstruction | YES |
| Remedial works | YES |
| Traffic or rail load optimisation | YES |
Shows the steps involved to quickly build a model of a 3-span masonry arch structure.
(Version 20.0)
LUSAS
Forge House
66 High Street
Kingston upon Thames
Surrey
KT1 1HN
United Kingdom