Software Tour
Staged construction
modelling
With LUSAS you can
model the step-by-step construction or dismantling of your structure
over time, and evaluate the effects of structural changes, load
applications, and time-dependent material changes. Also with LUSAS,
unlike some software, only one model file need be created and this can
contain all of the information required to carry out an analysis of
every stage of construction. The effects of geometric and material
nonlinearity, and time-dependent material effects such as creep and
shrinkage can all be included.
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complete staged construction modelling process for a model is
controlled in the Analyses panel of the LUSAS treeview. When
modelling, groups of elements and their associated attributes
can be activated and deactivated, with supports being carried
forward between loadcases, introduced or removed to accurately
represent each stage.
Camber,
displacement history, and incremental displacement results
tables can also be produced for selected model locations and
for any specified results loadcases.
Facilities
- Model full staged
construction with beams, shells and solid elements (some software
only permits beams to be used)
- Full activation and
deactivation of elements is supported
- Model any support
condition and add or remove supports as required during the
construction sequence
- Sliding bearings may
be modelled using nonlinear contact (slidelines)
- Support and loading
facilities including temporary/traveller loads
- Apply loads anywhere
onto any model
- Change
loading/stress/strain over time and lock- in stresses, if
applicable, between stages
- Prescribed
displacements or jacking loads may be used as spans are completed
- Time-dependent
material properties include stress related concrete creep and
shrinkage to CEB-FIP Model Code 1990, (and others) and includes
creep recovery
- Custom
time-dependent curves for particular material properties and codes
- Use single or
multi-tendon wizards to define and assign tendon properties and
time-stages to features of a model.
- Steel relaxation,
time effect on elastic modulus, tendon post-tensioning losses from
creep, shrinkage, and superimposed loads
- Cumulative effects
can be reported separately for each loadcase, such as
post-tensioning effects, or for the effects of just creep and
shrinkage
- Incremental effects
can also be specified allowing you to view and assess the net
changes to the structure since the previous stage
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Time Management
Use the
time management facility to manage a simple construction schedule and easily adjust
the duration of pre-defined construction stages in a staged
construction analysis. Easily and automatically update the total response time values in nonlinear and
transient controls that have been previously specified for each
loadcase of a staged construction analysis.
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Software Information
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