Summary of new featuresand enhancements

LUSAS Version 16simplify | collaborate | design

LUSAS Version 16Version 16.0 of LUSAS is a major software release that sees the introduction of steel frame designchecking capabilities into LUSAS Modeller and a host of other new features and enhancements tomake collaboration between staff easier, and to improve general usability.

Simplify Improve your efficiency and reduce

errors when generating models andextracting results.

Streamline the interface with structurecategorisation. Remove the non-essentialand concentrate on production.

Efficiently apply LUSAS to the simplest aswell as the more complex structures forwhich it is renowned. Bring your teamstogether in one system. Simplify sharing.

Explore the behaviour of your structuresand present them to others in animproved interface, including perspectiveviews and clearer labelling.

Produce repeatable output anddocumentation with greater control.Reissue quickly and automatically aftermodel editing or project revision.

Collaborate Meet the growing demands of the

industry and your clients by deliveringprojects to BIM level 2.

Extend your workflow more easily fromLUSAS. Link to other systems anddatabases that support the IFC format andboth architectural and structural domains.

Overlay data in BIM viewers forcomparison and clash detection offederated models.

Allow team members to work in parallelon different parts of a structure for fasterdelivery. Then merge models in LUSASwhen convenient.

Issue documents to higher standardswith new reporting tools. Deliver in PDFformat, the documentation standard forBIM.

Design Extend your LUSAS workflow from

analysis into detailed design.

Use a steel designer that is much morethan a summary checker. Calculations aretransparent, revealing every step, everyclause reference, and every formula.

Extend the application of the RC slabdesigner to almost any surface structureincluding walls, pre-stress slabs, leaf piers,circular tanks and tunnels.

Automate the building of loadcombinations to a broad range of codes.

Identify the worst traffic load patternsfor new and existing bridges with theLUSAS vehicle load optimiser. Cover evenmore codes of practice from across theglobe.

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New Modeller User InterfaceThe Modeller User Interface has been updated to provide a more modern look andfeel, and easier ways to interact with the view windows. Multiple selection of treeviewdata for assignment or deletion purposes is now possible.

View windows appear with individual tabs for easy selection. These can be draggedand dropped within the interface to create side-by-side views.

Selection Memory, Selected Items, Cyclable Items, and Visible Items selection panelsare also tabbed and can be dragged and dropped to any location on screen, dockedwith other panels and set to Auto Hide.

Model analysis categoriesAn analysis category has been introduced,which must be stated for each model.

Choosing an analysis category of either2D Grillage/Plate, 2D Inplane, 2DAxisymmetric, or 3D simplifies the userinterface where to generally show onlythose menu items, dialog settings andselections that are appropriate to the typeof model being defined. This preventsissues arising from mixing incompatibleelements, and/or mixing elements withincompatible attributes and options.

Selecting an analysis category also defineswhich startup templates are available forselection.

Some of the Simplify and Collaborate improvements...

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Multiple selection of treeviewdataAll Treeviews (with the exception of theLayers Treeview) now support multipleselection of objects in order to carry-outan operation on the items, such as todelete a range of loadcases, or to copyattribute data within the treeview.

In the Analyses Treeview multiple loadingassignments can now be selected to havetheir load factors changed to a commonvalue at the same time by using the'Change Load Factor' context menu item.

Other selection-specific context menusprovide options for each treeview entry.Only appropriate context menu optionsare provided for multiple selected items.

Dialogs that show treeview-style checkboxes (such as used in the Print ResultsWizard dialog) now also support multipleselection.

Model merge facilityModel merge allows teams to createseparate models of specific parts of astructure (as for example for differentstoreys of a building, or different elementsof a stadium) and then combine them at alater date into one master model. Optionsallow specifying how the geometry,attributes, loadcases and groups from theimported model are to be merged withequivalent objects in the currently openmodel.

BIM/BrIM File import / exportBasic geometry data from third-party BIM/BrIM files (*.ifc) can be imported to createa feature-based geometry model inLUSAS. BIM/BrIM Structural domain files(*.ifc) and BIM/BrIM Architectural domainfiles (*.ifc) are supported for export.

Perspective viewingPerspective viewing is now provided. Itsupports feature selection, resizing,construction grid and page layoutfacilities, and allows for more realisticviewing and 'fly-throughs' of a model.

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Steel Frame DesignDesign code checking of steel members can now be easilycarried out in LUSAS Modeller using the Steel Design option.This is performed as a results processing operation following thesolving of a model, and the assignment of Steel frame designattributes to lines that represent steel members. The followingdesign codes are currently supported:

AASHTO LRFD 7th Edition (2014) - AASHTO LRFD BridgeDesign Specifications, 7th Edition, American Association of StateHighway and Transportation Officials, 2014.

CSA S6-14 Canadian Highway Bridge Design Code - CSA-S6-14, Canadian Highway Bridge Design Code, Dec 2014, CSAGroup.

EN1993-1-1+A1:2014 - EN 1993-1-1:2005 Eurocode 3:Design of steel structures – Part 1-1: General rules and rules forbuildings.

AS 4100-1998 Steel Structures (Australia) - AustralianStandard: AS4100-1998, Steel structures, Standards AustraliaInternational Ltd, Sydney.

Design check results are visualised as Utilisation ratios on a resultsviewing layer for a selected design code, and active loadcase,load combination or envelope. Results components forindividual design checks can be chosen for viewing, andmaximum utilisation factors can also be obtained.

Some of the Design-related improvements...

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Design summary reportsA tabular summary of design check results can be produced forselected members and loadcases. Results may be saved for usewith Microsoft Excel or saved to a text format. Results can alsobe added to a model report, and each time the main report isgenerated the design summary data will be updated to matchthe current state of the model.

Formatted member reportsTo investigate the design calculations carried out for particularmembers, formatted design reports can be generated, showingthe calculations made and referencing clauses and equationsfrom the code. A formatted design report for the selectedmember can be added to a model report.

Design Code Load CombinationsThe new Design Combination wizard is used to assign aloadtype to a loadcase, envelope or basic combination for asupported design code. Based on the assignments and settingsmade, load combinations for those load types are automaticallygenerated by LUSAS Modeller.

Design combinations for the following codes of practice aresupported.

AASHTO 7th Edition AS/NZS 1170 BD21/01 BD37/01 CSA-S6-14 EN1990 (Buildings) Recommended Values, Irish and UK NA. EN1990 (Bridges) Recommended Values, Irish and UK NA. GB 50009 - 2012 JTG D60-2004

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RC Slab design with bending and in-planeeffectsThe reinforced concrete slab design facility has been improvedto consider in-plane effects for structures modelled using shellelements. It supports plotting of contours and values thatindicate flexural reinforcement requirements at Ultimate LimitState (ULS) or design crack width at Serviceability Limit State(SLS) for design codes that support this.

Calculations now carried out are for reinforced concrete slabs(without prestressing) that are modelled using plate or shellelements. For ULS, both bending only (using Wood-Armer),and bending and in-plane effects (using Clark-Nielsen) can beconsidered. For SLS, both bending-only (using principalmoments), and bending and in-plane effects (using principalstresses) can be considered, if supported by a chosen designcode.

Reinforcement arrangements are now defined using RC slabdesign attributes. Multiple slab design attributes may be definedand assigned to relevant features on a model.

Values and results contours for a chosen results component canbe displayed for a stated slab face and for a previously chosenCode of Practice using standard values and contour plottingfacilities.

The RC slab design facility now also supports AASHTO LRFDBridge Design Specifications, 7th Edition, American Associationof State Highway and Transportation Officials, 2014.

Wood-Armer attributeThe introduction of Wood-Armer attributes simplifies thespecification of slab reinforcement arrangements. Whenassigned to features in a model, they permit calculation of topand bottom reinforcement moments for shell, plate and grillageelements, and top and bottom reinforcement forces for shellelements only according to Wood-Armer / Clark-Nielsen theory.Multiple Wood-Armer attributes may be defined and assignedto relevant regions and features on a model.

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Design code response spectra now providedDesign code response spectrum data for use withIMD loadcases can be defined. The following codes of practiceare currently supported:

ASCE 7-10 (2010) ATC-40 (1996) China GB 50011-2010 EN1998-1:2004 Design (Horizontal) EN1998-1:2004 Elastic (Horizontal) FEMA 356 (2000)

Traffic load optimisation codes added China: JTG D60-2015 Denmark: EN 1991-2 DK NA:2015 DS/EN 1990/A1 DK

NA:2015 National Annex to Eurocode 0 Denmark: DS/EN 1991-2 DK NA:2015 National Annex to

Eurocode 1: Actions on structures – Part 2: Traffic load on bridges

Denmark: Annex A (Normative) Load Models for Classification and Assessment of Load-carrying Capacity

Saudi Arabia: MOMRA Bridges Design Specifications Sweden: TDOK 2013_0267 (NATO Vehicles) United Kingdom: BS5400-2:1978 loading USA: AASHTO LRFD 7th Edition - additional state

implementations for Indiana, Louisiana, Maine, Minnesota, Nevada, New York.

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Time dependent prestressThe multi tendon prestress wizard has been updated for theAASHTO and Eurocodes to provide an option to allow forproducing details and results of losses at any time, and for anystage of construction.

Selection of the new 'Losses based upon time inputs andcalculated stresses' option simplifies and avoids the previous needto duplicate particular values for Age, material and geometricattributes that were assigned to the loaded beam. Codifiedequations are now used to compute creep and shrinkagecoefficients that were previously difficult for users to define.Values of "stress at transfer" and "change in stress after transfer"are now computed from assigned model data by solving themodel at least twice.

Time management facilityA new time management facility provides the means to managea simple construction schedule and easily adjust the duration ofpre-defined construction stages in a staged construction analysis.

Conversion of loading to massIt is now no longer required to manually convert loading to massif any semi-permanent loading is to be taken into account as partof an eigenvalue analysis. Instead, an option on the eigenvaluecontrol dialog can be selected to automatically make allowancefor this loading. Only loading acting in the direction of thevertical axis is considered.

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Some of the analysis and results-related improvements...Inspection locationsInspection locations provide the means toobtain results for user-defined positions ofinterest on a model. Model features canhave multiple inspection locationsassigned to them. Inspection locations canreport results on elements that belong tothe assigned feature, and also thoseelements that belong to topologicallyconnected features. Results can be viewedfor all defined inspection locations byselecting the Inspection Locations optionfrom a relevant results dialog, or forindividual chosen locations.

Time managementThe time management facility provides themeans to manage a simple constructionschedule and easily adjust the duration ofpre-defined construction stages in astaged construction analysis. It can beaccessed using the Bridge> TimeManagement menu item and also fromthe Tendon Loading Assignment page ofthe MultipleTendon Prestress Wizard.

It is used to automatically update the totalresponse time values in nonlinear andtransient controls that have beenpreviously specified for each loadcase.

Nonlinear cable tuningThe linear cable tuning analysis facility hasbeen supplemented by a nonlinear cabletuning loadcase option. Nonlinear cabletuning is for use in nonlinear analyseswhere geometric, material or boundarycondition nonlinearity may exist. It is alsoused for obtaining an equilibrium state ofstressed geometry in existing structureswhen nonlinear effects are significant.

Unlike linear cable tuning, loadcases donot have to be explicitly selected to beincluded in a nonlinear cable tuninganalysis. Instead, the position of anonlinear cable tuning loadcase within theAnalyses Treeview will dictate whichpreceding loadcase is used to provideloading data for the cable tuning analysis.

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Print Results Wizard updatedThe Print Results Wizard has beenupdated to consist of a single dialogcontaining all possible results selections. Itsuse is now consistent with the Graphs andSaved Views facilities such that results datacan be added to reports by using an Addto Report button on the printed resultswindow that is displayed, or via an Add toReport context menu for the Print ResultsWizard entry in the Utilities Treeview.

Graph through 2D facilityA slice section can now be created withreference to a selected line, arc orcombined line, optionally specifying thatthe projected length of the line (in achosen direction) be used to define thelength of slice section line on the model.Slice sections can be created at previouslydefined and graphed locations.

When defining the line section by cursoror for lines generated by projection, thesection line created will, by default, bedrawn in the Utilities layer. This may beused later for repeating the cut if a graphalong the same line is required.

A 'Width for corridor averaging' value canoptionally be specified to increase thenumber of results used when creating agraph of slice results in order to avoidlocalised results concentrations.

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Beam and shell / slicingIt is now no longer necessary to have toview a model along one of the primaryview axes prior to defining a slice locationon a beam / shell model.

Multiple beam/shell slice definitions cannow be defined in a single model and aresaved as utilities within the model. Slicedefinition is enhanced to provide morespacing options and control over theextent of the model to be sliced. The timetaken to produce results is reduced.

Summary of all new features and enhancements in LUSAS Version 16Design New design menu Steel frame design introduced New steel frame design attribute Formatted design reports Design code-based load combinations RC slab design improvements RC Slab design with in-plane design effects New RC Slab design attribute RC Slab design to AASHTO LRFD 7th New Wood-Armer attribute Response spectra for design codes Material library enhanced

Traffic Load Optimisation codes added China JTG D60-2015 Denmark DS/EN 1991-2 DK NA:2015 added Saudi Arabia MOMRA Bridges Design

Specifications Sweden TDOK 2013_0267 (NATO Vehicles) UK BS5400-2:1978 loading UK BD37/01 loading USA AASHTO LRFD 7th Edition - Additional

State implementations

Analysis Nonlinear cable tuning loadcases P-Delta analysis Time dependent prestress Time management module

Eigenvalue buckling of stressed structures Convert loading to mass for eigenvalue analysis

Results Inspection locations Improved averaging of results Enhanced averaging for DMI analysis Selective results output Improvement to Graph through 2D facility ) Improved beam/shell slice resultants facility Combination and envelope facilities now

support User Defined Results Name scoping for User Defined Results Print Results Wizard updated Loadcase results now generated in a model

report using Print Results Wizard Progress bar introduced for Modeller results

calculation Improved storing of Modeller-calculated

results

Modelling New Modeller User Interface Multiple selection now possible in Treeview Model analysis categories / filtered menus

and element types Model merge facility BIM import / export Compound section property calculator Concrete infill and encased steel section

property calculation

Additional steel sections added to China section library Improved arbitrary section property

calculation Section property modification / stiffness

reduction factors Loadcase dependent constraints Perspective viewing Layout grids New point, line and surface drawing options Utilities menu simplified / Tools menu added Thermal loading types rationalised Temperature dependent material properties Internal position of shear springs for joint

elements with non-coincident nodes Internal deformed shape of element 3D rotated label and diagram text

Elements New 2D 3-noded Beam Elements New 2D Thick Beam Element with Quadratic

Cross-section New 2D Plane Strain Beam Elements New 2D Axisymmetric Shell Elements New 3D Thick Isoparametric Beam Elements

with Torsional Warping New 3D Thick Isoparametric Beam Elements

with Quadrilateral Cross-Section

For details of all new features andenhancements please visit www.lusas.com

LLLLLUSAS, USAS, USAS, USAS, USAS, Forge House, 66 High Street, Kingston upon Thames, Surrey, KT1 1HN, UKTel: +44 (0)20 8541 1999 | Fax: +44 (0)20 8549 9399 | Email: info@lusas.com | www.lusas.com