Can LUSAS accommodate varying
widths and thicknesses of flanges?
Geometric dimensions and properties can be varied to exactly
match your proposed design.
Can slab and girder connections
be modelled as rigid connections; or with an interference mesh
between the slab and the girder; or can individual shear studs
even be modelled if thought necessary?
YES - Unlike
some analysis systems LUSAS Bridge allows you to idealise
your composite deck/curved girder structure in any way you wish.
Can LUSAS model areas of cracked
concrete - such as may occur in regions of slabs around and over
YES - The
cross-sectional properties of your structure can be varied along
the bridge deck.
Can LUSAS handle staged erection
Elements in your model can be deactivated and re-activated to
mimic the erection process and show stresses and forces induced during the
Can I load LUSAS models with
arbitrary truck loading?
YES - Vehicle
loading can be manually assessed or the Autoloader vehicle
optimisation facility will assess worst case loading patterns
for any point on your structure. LUSAS deals with this as
Can I isolate parts of my model
for more detailed results processing?
YES - The
useful group facility allows you to break down your model into
named components and this allows selective display of model
features or for isolated viewing of particular results.
Can I slice through my model to
get results at selected points?
YES - A slice
section facility allows forces and moments to be obtained at any
chosen location on 3D beam and shell models and is of particular
use for curved girder analysis. It allows slice sections to be
defined at user-specified distances along the deck or along
individual girders. Slice sections are visualised, labelled on
the model, and results are written to a results window for
creation of force and moment diagrams if required.
Can I see the tension and
compression forces in the cross frame bracing members?
Diagrams of axial force in beam elements can be easily plotted
to assist you with the design of your bracing.