SAP2000 News

NEWS
LEARN ABOUT THE NEW FEATURES
IN THE LATEST RELEASE

1

Oct

2014

The following Enhancements have been implemented for SAP2000 v17.1.0  and 17.1.1:

  • The window refresh speed for Classical Plus graphics has been improved.
  • The speed of analysis has been increased.
  • Steel frame design according to IS 800:2007 has been updated to include Amendment #1.
  • Other minor enhancements.

6

Aug

2014

The following Enhancements have been implemented for SAP2000 v17.0.0:

  • The responsiveness of the user interface has been improved.
  • The DirectX graphics functionality has been enhanced.
  • Improved convergence behavior and increased speed for nonlinear static and direct-integration time-history analysis
  • Steel Detailing Neutral File (SDNF) version 3 file import is now supported.
  • Print preview is now available when printing images, design output, etc.
  • Other minor enhancements.

22

May

2014

Significant enhancements include:

  • Steel frame design has been added according to the Norsok N-004 2013 code.
  • Steel frame design according to the API RP 2A-WSD 21st edition code has been updated for supplements 1, 2 and 3.
  • Auto lateral wind load has been added according to the API 4F 2013 code.
  • The Chinese section-property database files have been enhanced by adding new sections.
  • A bilinear Maxwell damper has been implemented as a new link property. This device is a linear spring in series with a dashpot whose force-velocity relationship exhibits bilinear viscous behavior, typical of certain oil dampers having a relief valve.
  • A friction-spring hysteretic damper has been implemented as a new link property. The force-displacement relationship exhibits linear slipping stiffness when loading, but unloads with a smaller slipping stiffness. A pre-compression displacement and a displacement stop-limit may be specified.
  • The specification of the notional size used for time-dependent creep and shrinkage analysis has been enhanced to now be specified with the frame and shell section properties instead of with the material property.
  • A new staged-construction operation “Change Section & Age” is now available allowing specification of the “Age at Add” when changing frame sections or shell sections.
  • Table output can now request the correspondence between the response components at a single location for additive-, range-, and enveloping-type load combinations. Results that admit correspondence includes most displacement, force, and stress response quantities.
  • The import of primary data from SACS data files is now available.

12

Sep

2013

SAP2000 V16.0.0, V16.0.1 and V16.0.2 Enhancements

Significant enhancements include:

  • Improved graphics performance
  • Display of multiple grid systems at the same time
  • New steel frame design code AISC 360-10
  • New steel frame design code NTC 2008
  • New concrete frame design code ACI 318-11
  • New concrete frame design code NTC 2008
  • New concrete frame design code NZS 3101-06
  • New concrete frame design code RCDF 2004
  • New concrete frame design code Hong Kong CP 2013
  • Enhanced beam-column capacity check for concrete frame design using Eurocode 2-2004
  • Stiffness modifiers from the AISC 360 steel frame design direct analysis method are now available in the database table for assigned frame property modifiers
  • New wind, seismic, and response-spectrum lateral loads for code IBC 2012
  • New wind lateral loads for code AS/NZS 1170.2-2011
  • New wind, seismic, and response-spectrum lateral loads for code NTC 2008
  • New wind, seismic, and response-spectrum lateral loads for codes TSC 2007 and TS 498-97
  • New response-spectrum lateral loads code AASHTO 2012
  • New assignment to control area loads transferred to frames
  • New hybrid U-girder frame section property
  • New built-in ASTM bridge steel materials
  • Chinese concrete material and design updated to use characteristic strength rather than grade
  • New link property for modeling triple-pendulum bearings
  • External tendons can now be modeled under user control
  • Plotting of tendon loads, losses, and axial-force response has been enhanced
  • Ground displacement loading now applies to single-joint links, including distributed spring supports, as well as to springs and restraints
  • Multiple mass sources can be defined for modeling alternative dynamic behavior
  • The undeformed shape can now be viewed for various stages of staged construction load case without running the analysis
  • Response output for staged-construction load cases now is labeled with the stage and step within the stage
  • Shear stress, von Mises stress, and principal stress response is now available for certain frame sections
  • Shell stresses can now be displayed normalized by material strength
  • Bearing pressure on shells from area springs can now be displayed
  • Display of frame-design D/C ratios can be limited by a specified threshold value
  • Verification suites are now provided for steel and concrete frame design by most codes
  • New Open API functions to define section-cuts
  • New Open API functions to define external load cases for frame results
  • New Open API functions to get detailed steel frame design results for certain codes
  • Customizable keyboard shortcuts for menu commands
  • Support for the import and export of files using the IFC 4 format
  • Licensing will now support web-activation and virtual servers
  • Simplified installation using the CSI Installation Wizard
  • Other minor enhancements

7

Feb

2013

  • The memory capacity has been increased for the graphical user interface, allowing larger models to be handled.  
  • The analysis of certain non‐symmetrical frame sections now accounts for coupled bending due to the product of inertia, I23, and for the coupling between major shear (V2) and torsion when the shear center is not located at the centroid of the section. Steel frame design and cold‐formed frame design are not affected except as may due to changes in analysis results. Steel frame design was already accounting for the rotated principal axes of bending for angle sections as documented for the various codes.  
  • The number of time steps that can be run in a single linear or nonlinear (FNA) modal time‐history load case has been increased for cases with a large number of link elements.  
  • Italian material property definitions have been added.
  • Steel frame design using the "AS4100‐1998" and "NZS 3404‐1997" codes have been enhanced to provide more design details.  
  • Mass participation ratios for the rotational acceleration loads (RX, RY,and RZ) have been changed so that they are now reported with respect to the centroid of the structure. Previously they were reported with respect to the global origin.  
  • The import of StruCAD*3D models has been enhanced to allow the import of the Cb, Cm, and unbraced‐length design overwrites.

31

Oct

2011

  • Chinese design has been updated to the 2010 specifications for seismic load patterns, response-spectrum functions, load combinations, concrete frame design, and the seismic provisions for steel frame design. These enhancements are consistent with the following specifications: “GB50011-2010 Code for seismic design of buildings”, “GB 50010-2010 Code for design of concrete structures”, and “JGJ 3-2010 Technical specification for concrete structures of tall building”.
  • Concrete frame design has been added according to Turkish standard "TS 500-2000", including Seismic Design Code 2007.
  • The National Annex for Poland has been implemented for concrete frame design using “Eurocode 2-2004”.
  • The National Annex for Poland has been implemented for concrete frame design using “Eurocode 3-2005”.
  • The definition of material properties has been enhanced to allow user-defined standard materials through the use of XML files. Properties are segregated by region and by code-standard within these files as well as when using the materials in the graphical user interface. New materials have been added for China and Spain.
  • Steel frame section properties for the AISC Shapes Database Version 14.0 are now available in the section-property database files for U.S Customary and metric units.
  • Data transfer between SAP2000 v15.1.0 and Revit Structure 2012 is now supported using the same .EXR file format that is used to transfer data between ETABS and Revit Structure.

11

Aug

2011

  • User-defined stress points may now be specified for Section Designer frame sections.
  • The OAPI (Open Application Programming Interface) has been changed so that multiple instances of SAP2000 can now be started from an external program or script.
  • New functionality has been added to the Open API (Open Application Programing Interface) for the design codes.

16

Jun

2011

  • New graphical user interface with tabbed windows.
  • New DirectX graphics.
  • Display and output of frame stresses.
  • Load optimization feature to determine the optimal loading scale factors to achieve goals and limits on displacement and force response throughout the structure.
  • Built-in European concrete and steel material properties.
  • Canadian NBCC loading for wind, seismic, and response-spectrum.
  • American ASCE-7 loading for wind, seismic, and response-spectrum.
  • Italian NTC 2008 response-spectrum functions with geographic database.
  • Indian steel frame design code IS 800 2008.
  • New Zealand steel frame design code NZS 3404-1997.
  • Canadian steel frame design code CSA S16-2009.
  • Updated Hong Kong concrete frame design code to include Supplement 1.
  • Australian concrete frame design code AS3600-2009.
  • Enhanced Eurocode 3-2005 steel frame design, including design for Class 4 sections.
  • National annexes for Eurocode 2-2004 concrete frame design for Singapore, Germany, and Portugal.
  • National annexes for Eurocode 3-2005 steel frame design for Singapore, Germany, and Portugal.
  • Hybrid steel frame section property.
  • Simple arc for tendon profile definition.
  • Updated API functionality.
  • Import of StruCAD*3D design parameters and wave acceleration loading.
  • Note that the Bridge module has been moved to the CSiBridge product with expanded features and capabilities. Basic moving-load analysis has been retained for non-bridge applications.
  • Other minor enhancements.

20

Dec

2010

Significant new features

  • Concrete frame design has been enhanced to improve the smoothing of P-M-M interaction surfaces in those rare cases where they become non-convex due to kinks in the P-M curves.
  • A new design overwrite has been added for steel frame design using the "Eurocode 3-2005" code. You may now use the "Is Rolled Section" parameter to indicate whether the member is rolled or welded. The assignment as rolled or welded affects the b/t ratio and therefore may affect the section classification. It may also affect the shear-area calculation.
  • The limit on the number of nodes (joints) allowed for exporting a model to a SASSI file has been increased from 9999 to 99999. The exported files are still compatible with the older format if fewer than 10000 nodes are exported.

8

Oct

2010

Significant new features

  • The program level (Advanced, Plus, Basic) can now be chosen when starting the program using a command-line option.
  • New Quick Materials have been added for common Indian steel, concrete, and rebar material properties.
  • The length effects for the uniform loads of the British standard HA vehicle (BD-3701) have been updated to the latest edition of the code.
  • Modal time-history analysis for dynamic bridge loading now runs considerably faster.
  • Multiple enhancements have been made for concrete frame design using Indian code IS 456-2000 for handling slenderness and P-delta effects.
  • Eurocode 3-2005 steel frame design has been enhanced to provide more detailed reporting.
  • The export to CIS/2 has been enhanced so that the resulting data files can be read by SDS/2, and now includes all frame offsets.

30

Jul

2010

Significant new features

  • Steel-frame design has been implemented for the Australian design code "AS 4100-1998".
  • The National Annex parameters for Sweden, Finland, and Denmark have been added for concrete frame design per code "Eurocode 2-2004" and for steel frame design per "Eurocode 3-2005". 
  • The sign of all results for hyperstatic load cases has been reversed at the request of several users.
  • The installation has been changed so that it is no longer necessary for users to use the command "Run As Administrator" the first time they execute SAP2000 after updating to a new version of the program if they uninstall the previous version first.

22

Mar

2010

Significant New Features

  • The CQC3 method of directional combination has been added as an option for response-spectrum load cases.
  • Concrete frame design using code "ACI 318-08" has been implemented.
  • Eurocode 8 seismic provisions have been implemented for concrete frame design using code “Eurocode 2-2004”. • Eurocode 8 seismic provisions have been implemented for steel frame design using code “Eurocode 3-2005”.
  • The Singapore National Annex to Eurocode 2 (NA to SS EN 1992-1-1 : 2008) has been implemented for concrete frame design using “Eurocode 2-2004”.
  • Snow loads are now included in the automatic load combinations that are created for concrete design using codes "ACI318-02/IBC2003" and "ACI318-05/IBC2006". The documentation has been updated accordingly.
  • The design load combinations created by the program for steel frame design code "CAN/CSA-S16-01" now include notional loads, if any have been defined.
  • The shear design for “Eurocode 2 2004” has been enhanced to optimized for angle “theta” in Section 6.2.3 of the code.
  • The identification of lateral load cases (seismic or wind) has been improved for nonlinear cases which may contain these loads. This affects the increase in allowables for some design codes.
  • The design preferences for concrete, steel, cold-formed steel, and aluminum design have been enhanced to provide more control for the creation of internal design load combinations involving nonlinear and staged-construction static load cases.
  • User-defined frame hinges can now be assigned to any frame section or any material. Previously, hinges could only be assigned to certain known section types, such as rectangular and circular concrete sections; steel pipes, tubes, and wide-flange sections; and Section-Designer sections.
  • Displayed plot functions have been enhanced by adding the ability to plot forces for section cuts that have been defined using quadrilateral cutting planes. Previously only forces for sections cuts defined from groups could be displayed as plot functions.
  • When displaying mode shapes graphically, the modal frequency is now displayed as well as the modal period.
  • Improvements have been made to nonlinear direct-integration time history analysis to improve its speed and convergence.
  • Three new options are now available for dividing frame objects using the command Edit > Edit Line > Divide Frames. They are (1) Divide at a specified distance from the I-end of the frame, (2) Divide at the intersection with a coordinate plane in the current coordinate system, and (3) Divide at the intersection with visible grid planes in the current coordinate system.
  • An enhancement has been made to the graphical user interface so that the view no longer zooms out after certain operations, such as showing selection only, performing editing operations like deletion, and returning from the Bridge Modeler.
  • The import and export of IFC files has been updated to include Schema 2x2, 2x3, and 2x3_TC1, including the import/export of sections properties.
  • The ability to export physical objects to IGES files has been added. Previously all objects were exported as FEM entities. Now you can choose either option. If you export as FEM, loads and properties are also exported. If you export as physical objects, only geometrical line and surface entities will be created, but properties and loads will not be exported.
  • A new option to export a Perform3D Structure has been added. Most geometry, material and section properties, restraints, diaphragm constraints, groups, loads, and load cases are exported for frame and shell elements. Corresponding Perform3D members are created depending on the properties and assignments present on the individual SAP2000 members. Detailed hinge properties and other Perform3D-specific features must be defined in Perform3D.
  • The Open API function that hides the GUI now also turns off the drawing functions for increased execution speed.

29

Jul

2009

Significant New Features

  • The capability to export a slab model to SAFE V12 has been implemented. This will be supported by SAFE V12.2 when it is released.
  • Detailed design checking has been implemented for multi-cell prestressed-concrete box-girder bridge superstructures according to the “AASHTO LRFD 2007” code using Live-Load Distribution Factors. This is in addition to the whole-section design previously released. Design checks are available for stress, flexural capacity, and shear capacity using MCFT (modified compression field theory).
  • Concrete frame design has been implemented using the AASHTO LRFD 2007” code.
  • Significant speed improvements have been made to the generation of AASHTO/Caltrans frame hinges for pushover analysis.
  • General improvements have been made to the automated bridge seismic design feature.
  • The concrete U-girder frame section can now also be used to model steel tubs in the Bridge Modeler. Each section can be supported by a single bearing at the center, or two bearings at the edges of the girder.
  • The modeling of steel-girder diaphragms for steel girder bridges has been improved to provide better support for the lower flange.
  • Automated wind lateral loading for Australia and New Zealand has been implemented according to the 2002 AS/NZS 1170.2 code.
  • The Norwegian national parameters have been implemented for auto seismic loading according to the “Eurocode 8” code.
  • The API 4F automated wind load has been enhanced to include a shielding factor.
  • Steel frame design for the “NORSOK N-004” code, including punching checks, has been added to the Offshore module. The design of non-tubular sections is in accordance with Eurocode 3-2005 with the Norwegian National Annex.
  • The Norwegian national parameters have been implemented for concrete frame design using the “Eurocode 2-2004” code and steel frame design using the “Eurocode 3-2005” code.
  • The 3-D rotation command in the graphical user interface has been improved for working in zoomed-in regions.

5

May

2009

Computers & Structures, Inc. is proud to announce the release of SAP2000 V14. The innovative enhancements in this version are categorized below. This fully integrated product for the modeling, analysis and design of structures continues to be available in three levels: Basic, Plus and Advanced.

Please contact sales@csiberkeley.com for more information.

Nonlinear and Pushover

  • A nonlinear, layered shell element using a directional material model has been added for pushover analysis of shear-wall structures and similar applications. A Quick-Start option is provided for easy modeling of reinforced concrete sections. Show me Nonlinear Shearwall capabilities
  • Plot functions have been added for shell layer stresses.
  • Frame hinges for Section Designer sections “To be Designed” have been enhanced to use the designed amount of rebar when available.
  • Section Designer has been enhanced for the display of fiber-model PMM surface.
  • The default material properties for concrete have been modified to improve convergence behavior.
  • The tangent stiffness used for the iteration of fiber hinges and multi-linear links has been changed to improve convergence.

Dynamics

  • Material-based damping is now available for linear and nonlinear direct-integration time-history analysis.
  • Material-based damping is now available for steady-state and PSD analysis.
  • Stiffness-proportional damping now uses initial stiffness instead of tangent stiffness to improve the consistency of results and convergence behavior.
  • The rigid-response calculation in response-spectrum analysis has been enhanced for NRC and general use.
  • Base reactions for response-spectrum and modal time-history analysis have been improved for springs and grounded link supports to better capture missing-mass effects.
  • Base reactions no longer include constraint forces at restraints, for consistency. 

Bridge Modeling and Design 

  • AASHTO LRFD 2007 superstructure design for precast concrete composite sections has been implemented. Checks include: stress, flexure, and shear (using MCFT). Show me how Automated Seismic Design of Bridges works
  • Fully automated bridge design check per AASHTO Guide Specifications for LRFD Seismic Bridge Design 2009 has been implemented, including pushover analysis when required.
  • Automated handling of secondary prestress force has been implemented for the AASHTO LRFD 2007 superstructure flexural design check for prestressed concrete box girder sections.
  • The AASTHO/USGS 2007 response-spectrum function has been added.
  • Variable girder spacing along the length of the bridge superstructure is now available.
  • Variable reference-point location along the length of the bridge superstructure is now available.
  • Alignment of shell local axes in generated bridge models has been enhanced.
  • The longitudinal discretization of bridge models is now more uniform in complex models.
  • Tendons modeled as elements now allow elastic, creep, shrinkage, and steel-relaxation losses to be directly specified.
  • The displacements for constrained joints in staged construction are no longer updated for deflection until they are actually added to the model. 

New Design Code Related Enhancements

  • Eurocode-2 2004 concrete frame design added, without seismic provisions.
  • Eurocode-3 2005 steel frame design added, without seismic provisions.
  • Australian concrete frame design per code AS 3600-2001 added, including seismic provisions.
  • Multiple enhancements made for Indian concrete frame design per code IS 456-2000.
  • Multiple enhancements made for Chinese 2002 concrete frame design.
  • Multiple enhancements made for Chinese 2002 steel frame design.
  • Auto-lateral loads added for Eurocode: Wind, Seismic, and Response-spectrum.
  • Auto-lateral loads added for Australia: Seismic and Response-spectrum.
  • Auto-lateral loads added for New Zealand: Seismic and Response-spectrum.
  • Other Enhancements to the Graphical User Interface (GUI) Multiple enhancements have been made to the graphical display for clarity and speed.
  • Multi-stepped static analysis of Bridge Live loads acting on frame elements is now available in Plus/Advanced levels without the Bridge license for modeling crane loads, footfall, etc.
  • Single-stage construction cases starting from zero are now available in Plus/Advanced levels without the Staged-construction license for modeling separate gravity and lateral configurations, different support conditions, etc.
  • The import of StruCAD*3D data files is now available.
  • New and updated API functions have been implemented.

Notes: 

  • To be able to take advantage of the features of the newer CPU's, SAP2000 V14 will not run on some of the older CPU's from Intel and AMD. A CPU that has SSE2 support is now required
  • SAPfire® Analytical Engine now includes a multi-threaded solver that can take advantage of the newer multi-core CPUs.
  • Support for Microsoft® Windows 2000 and Microsoft® Windows NT has been discontinued. Microsoft® Windows XP without Service Pack 2 may cause unexpected problems when running SAP2000 V14.
  • With a 64 bit operating system, SAPfire® Analytical Engine can utilize more than 4 GB of RAM, making it possible to more efficiently solve larger problems.
  • The problem size that can be solved & the solution speed increases considerably with more RAM. Vista requires more RAM than XP for the operating system itself.
  • OpenGL graphics mode fully utilizes the hardware acceleration provided by a GPU & dedicated graphics RAM.

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New NY Bridge Project

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Pedestrian Bridge Complements Scenic Surroundings

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Nonlinear Analysis in Modern Earthquake Engineering Practice

March 1, 2014

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Hanging Over the 10

January 14, 2014

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