Software Option for Standard and
Plus versions
Vehicle Load Optimisation
Vehicle Load Optimisation
software complements and
extends the in-built static and moving vehicle loading capabilities of LUSAS Bridge and
helps to significantly simplify the evaluation of worst load position for various
load configurations.
Vehicle load optimisation is used to
identify critical vehicle loading patterns on bridges and apply these
loading patterns to LUSAS analysis models. It reduces the amount of
time spent generating models and leads to more efficient and economic
design, assessment or load rating of bridge structures.
How does it work?
- One or more positions on the LUSAS
model that are to be used for loading evaluation are selected and
assigned influence attributes.
- Kerb lines representing the extent
of the carriageway are defined.
- An influence surface for each
position is automatically calculated and can be optionally
displayed.
- The vehicle load optimisation
facility interrogates each influence surface and calculates the
critical loading pattern. The critical loading pattern can be
optionally displayed prior to calculating loading effects.
- The critical loading patterns are
then used to calculate the loading effects on the model. Critical
loading patterns can be optionally superimposed on deformed or
undeformed results plots.
By using LUSAS Bridge with Vehicle Load Optimisation
software the guesswork is taken out of
bridge loading and a much faster evaluation of worst-case loading
patterns is obtained.
Country design codes supported:
Design codes for numerous countries are
supported. These currently include:
- Australia: AUSTROADS standard, AS5100-2: 2004
- Canada CAN/CSA-S6-06 (Design)
- China: JTG D62-2004
- Europe: EN1991-2 recommended
values
- Ireland: EN1991-2
- Italy: EN1991-2
- Finland
- India
- Israel
- Korea
- New Zealand (Transit New Zealand Bridge Manual)
- Norway
- Poland: EN1991-2
- Sweden: EN1991-2, BRO
- South Africa: TMH7
- United Kingdom: EN1991-2, BD21/97, BD21/01, BD37/88,
BD37/01 (Road+Rail), BS5400 Rail Railtrack document RT/CE/025
- United States of America: AASHTO LFD, LRFD
(7th and 6th Edition)
In Summary:
- Automatic generation of influence
lines / surfaces in LUSAS Bridge
- Solves several points on a structure
in one analysis session
- For use with LUSAS beams (LUSAS TLO
option only), plates, shells
and grillages
- Precise identification of critical
loading patterns to the appropriate international code of practice
- Graphical visualisation of vehicle
loading patterns
- Generates loadings for straight or curved
carriageways
- Facility to accommodate changes in
design codes
- Pre-defined standard vehicles
- User customisation of vehicle loads
- Option to use non-default values
- Option to create user-defined rules
- Fast solution times with loading
files being produced far quicker than can be done manually
- Facility with some supported codes for sensitivity testing -
for example determining the maximum number of HB units which a
structure may support, with or without HA loading
- Onerous results table facility
(LUSAS TLO only) can optionally show sorted results for all chosen influences at nodes that are
visible.
"Using the LUSAS
Vehicle Load Optimization facility expedited the live load
analyses for a highly repetitive task that would have otherwise been
extremely time consuming."
Dr Ihab Darwish, Alfred
Benesch and Company.
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Software Information
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