software is highly customisable. The LUSAS Programmable Interface
(LPI) provides the means to customise modelling and results processing
tasks to your specific requirements and provides the opportunity for
you to carry out structural optimisation and simple checks to
particular design codes.
The LPI is a powerful
tool for customising and automating LUSAS operations. By using
VBScript (or any ActiveX compliant scripting language, such as
Jscript, Perl, Python, C++, C# etc. ) to access LUSAS facilities and
functionality, you can:
- Create user-defined
menu items, dialogs and toolbars
- Interrogate all
aspects of a LUSAS model
- Customise modelling
- Automate repetitive
- Import CAD geometry
- Create parameterised
- Make direct links to
Word and Excel for import and export of data.
- Perform simple /
codified design checks
- When used with
automated iterative analysis, optimise structural member sizes and
A macro recording
facility in LUSAS generates VB scripts for customising. A dialog
editor is provided. The use of Visual Basic Runtime means that any VB
script can be run in LUSAS.
users can automate the creation of whole bridge spans for beam and
slab decks incorporating prestress, design checks and output reports in MS Word.
LUSAS VB scripting
assisted in the model building and analysis of seismic resistant
viaduct structures and station guideways for Contract C270 on the
Taiwan High Speed Rail Project. For this project a 38km long viaduct
required the creation of 70 separate models.
- A Visual Basic
Script read geometric data, such as column dimensions, span
lengths etc from an Excel database and built 3D beam models
automatically in LUSAS for global seismic analysis and
track-structure interaction assessement.
- Models were created
quicker and with more confidence than by manual methods.
- Subsequent response
spectrum analysis with LUSAS determined forces in columns; a
track-structure interaction analysis derived relative movements
and stresses within the rails under earthquake loading; and a
nonlinear soil-structure analysis determined stresses in piles and
pilecaps - all resulting in an economical design within a
demanding project time-scale.