Engineering analysis + design software

Software Option for LUSAS Bridge products

Masonry Bridge Wizard

The Masonry Bridge Wizard generates 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 would take to manually model the same structures. Create models that include piers and abutments, with or without a skew, using linear or nonlinear materials.

Defining models

Define models using a series of tabbed pages on which geometric values, material properties, any skew and optional train loading are specified. 

When all required data has been entered and the type of model (2D or 3D) and analysis (linear or nonlinear) selected, a model is generated using only the quantities applicable to the type of model and analysis type. 

Model creation / editing

Once automatically created, models can be further modified 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.

Viewing results

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. 

Within LUSAS, view results as contours of principal stress and, when nonlinear analysis is carried out, as cracking and crushing patterns, capacity curves, and graphs of a nodal displacement versus Total Load Factor (TLF).

2D model - Stress Smin in abutments, piers, arch rings and backing.

View regions of cracking and crushing on a deformed mesh

View graphs of total load factor against displacement for live load at selected locations.

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Software Information

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Any modelling, design and analysis capabilities described are dependent upon the LUSAS software product, version and option in use.