Software Tour
Modelling with LUSAS
LUSAS Bridge has an
easy to use, associative Modeller for modelling / results processing
and a fully integrated Solver which can be used independently.
 The
user interface is a full native Windows implementation providing
an Open Interface to ActiveX compliant Windows software such as
Excel, Access, Word and other software.- Customisation of
menus, toolbars and dialogs plus the ability to create your own
wizards with Visual Basic Scripting provides limitless potential
to tailor the software to specific needs.
- Models are formed of
layers where the visibility and properties of each layer can be
controlled and accessed via the layer name held in a Layer
treeview, one of a number of treeviews used to organise and access
model data.
- Models are created
using feature-based geometry methods and CAD import / export is
supported. As the model is built up, model features may be grouped
together and manipulated to speed up data preparation or to enable
parts of the model to be temporarily hidden.
- Model attributes
such as thickness, material, loading etc. can be named explicitly.
Once defined they appear in an attributes treeview ready to be
assigned to selected geometry of the model using the "drag
and drop" technique.
- Automatic meshing is
provided with mesh refinement capabilities.
- Built-in
associativity, a key feature of the LUSAS Modeller, ensures that
if the model geometry is amended, all assigned loadings, supports,
assigned mesh and other attributes are automatically updated to
suit.
 Fleshing
(the visualisation of assigned thicknesses or section shapes)
helps to ensure that the thicknesses and eccentricities of slabs
and the orientation of beam members are correctly defined.- Datatips reveal
useful model information such as assigned properties when the
cursor is positioned on top of a geometry feature.
- The OpenGL
implementation provides fast graphical displays. Multiple
graphical windows allow simultaneous displays of different parts
of the model at different orientations. Powerful cursor selection
options and pan, zoom, dynamic rotation and pre-defined views
allow for easy viewing and editing of your model.
- A multi-level
undo/redo facility allows quick modelling corrections to be made.
- Detailed on-line
dialog help links to additional reference manual material to
provide you with the most appropriate level of assistance at all
times.
Model Building Wizards
Modelling wizards allow
for rapid model generation.
- A grillage
wizard enables the
rapid generation of a wide variety of orthogonal, skewed and
curved multi-span grillage arrangements Cracked sections can also
be included.
-
A multiple
automatic influence wizard
permits the definition of all or selected model locations of
interest.
-
Single and
multiple tendon prestress wizards
compute tendon forces in accordance with various design codes
-
Loadcase
generators for
moving vehicle and train loads and the ability to model various
dynamic pedestrian loading configurations are available.
Section
libraries and section property calculators
Section
libraries and a range of section property calculators help to provide
for straightforward modelling of grid/grillage and beam models.
 Standard
Steel Section Libraries
Steel section
libraries include those for:
- United
Kingdom
- United
States of America
- European
Union
- Korea
- Australia
- Canada
- China
 Precast Beam Section Generators
A precast beam section
generator calculates section properties of a range of country-specific precast concrete beams including:
-
United Kingdom Y, YE, TY, TYE, SY, M, UM, and U beam
types
-
US AASHTO
Type II to VI beams, Florida Bulb T beams
-
Canadian NU Girders.
An option for including the contribution from a slab is
provided so that the section properties required in a grillage model
can be obtained.
 Standard
section property calculators
Section properties for common section
shapes such as rectangular, circular, I-shape, T-shape, L-shape,
T-Shape and Z-shape sections can be easily calculated.
 Arbitrary section property
calculator
Section property data for any
drawn shape or collection of section shapes can be calculated using an
arbitrary section property calculator.
Single and
Multi-Cell Pre-cast Box Section Property Calculator
This enables section properties of a single or multiple box cross section
(with and without voids) to be calculated from user defined dimensional data. The section shapes can be defined either as a simple cross-section or as complex section created from as many lines as are required to form a suitable representation of the true cross-sectional shape.
|
|
|
| Single
simple box section with void |
Multiple
complex box section with void |
Tapering beams and multiple
varying sections
- Tapering beams can be easily
defined by specifying section properties for each end.
- Multiple varying sections can be
defined along a path of lines allowing straightforward building of
models for bridges having curved soffits or for arch structures having
varying cross-sectional thicknesses.
|
|
|
| Definition
of a linear tapering beam |
Definition
of a multiple varying section |
Use
of the tapering beam and multiple varying section facilities enables
simple prototype and detailed staged construction models of bridges
formed of tapered box sections to be created in a very straightforward
manner.
Preliminary / Staged
construction model
 Continue
to Load types and combinations
Back to top
|
|
Software Information
|
