SACS Import Manual
User Manual: SACS Import
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SACS Import Manual SACS Import Manual for ISO SAP102816M6Rev. 0 Proudly developed in the United States of America October 2016 COPYRIGHT Copyright © Computers and Structures, Inc., 1978-2016 All rights reserved. The CSI Logo® and SAP2000® are registered trademarks of Computers and Structures, Inc. Adobe® and Acrobat® are registered trademarks of Adobe Systems Incorporated. SACSTM is a trademark of Bentley Systems, Inc. The computer program SAP2000® and all associated documentation are proprietary and copyrighted products. Worldwide rights of ownership rest with Computers and Structures, Inc. Unlicensed use of this program or reproduction of documentation in any form, without prior written authorization from Computers and Structures, Inc., is explicitly prohibited. No part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior explicit written permission of the publisher. Further information and copies of this documentation may be obtained from: Computers and Structures, Inc. www.csiamerica.com info@csiamerica.com (for general information) support@csiamerica.com (for technical support) DISCLAIMER CONSIDERABLE TIME, EFFORT AND EXPENSE HAVE GONE INTO THE DEVELOPMENT AND TESTING OF THIS SOFTWARE. HOWEVER, THE USER ACCEPTS AND UNDERSTANDS THAT NO WARRANTY IS EXPRESSED OR IMPLIED BY THE DEVELOPERS OR THE DISTRIBUTORS ON THE ACCURACY OR THE RELIABILITY OF THIS PRODUCT. THIS PRODUCT IS A PRACTICAL AND POWERFUL TOOL FOR STRUCTURAL DESIGN. HOWEVER, THE USER MUST EXPLICITLY UNDERSTAND THE BASIC ASSUMPTIONS OF THE SOFTWARE MODELING, ANALYSIS, AND DESIGN ALGORITHMS AND COMPENSATE FOR THE ASPECTS THAT ARE NOT ADDRESSED. THE INFORMATION PRODUCED BY THE SOFTWARE MUST BE CHECKED BY A QUALIFIED AND EXPERIENCED ENGINEER. THE ENGINEER MUST INDEPENDENTLY VERIFY THE RESULTS AND TAKE PROFESSIONAL RESPONSIBILITY FOR THE INFORMATION THAT IS USED. Contents 1 Introduction 1.1 Import a SACS File 1 1.2 Review Import Log 2 2 Read the SACS Input File 2.1 Input File Format 1 2.2 “Lines” Read 1 3 Translate the Model to SAP2000 3.1 SACS IV 3.1.1 OPTIONS “Line” 3.1.2 SECT “Line” 3.1.3 GRUP “Line” 3.1.4 MEMBER “Line” 3.1.5 MEMBER OFFSETS “Line” 3.1.6 PGRUP “Line” 3.1.7 PLATE “Line” 3.1.8 JOINT “Line” 3.1.9 JOINT PERSET “Line” 3.1.10 JOINT ELASTI “Line” 3.1.11 LOADCN “Line” 3.1.12 LOAD UNIF “Line” 3.1.13 LOAD DMOM “Line” 3.1.14 LOAD CONC “Line” 3.1.15 LOAD MOMT “Line” 3.1.16 LOAD JOIN “Line” 3.1.17 LCOMB “Line” 1 1 2 3 4 5 6 7 8 9 9 10 10 11 11 12 13 13 i 1 Introduction This manual describes the capabilities for importing SACS models into SAP2000 ®. SACS Version 5.6 files are currently handled. Models from other versions should also import, although this has not been thoroughly tested. It is important to read this entire manual before importing a SACS model in order to become familiar with any limitations of the import or assumptions that have been made. The process of importing a SACS model is broken into two main steps, namely reading the contents of the SACS input file translating the SACS model contents into a SAP2000 model Chapter 2 of this manual describes the first step of reading the SACS input file, while Chapter 3 describes in detail the translation of the SACS model into a SAP2000 model. 1.1 Import a SACS File A SACS model is imported using the File menu > Import > SACS File... command. The file to be imported is located using the file dialog box shown in Figure 1-1. Select the desired file to import and click the Open button to begin the import process. After selecting the file, if a model is currently open a prompt appears, as shown in Figure 1-2, asking whether to append to the existing model or start a new model. Import a SACS File 1-1 SACS Import Figure 1.1: File open dialog The first step of the import process reads the SACS file to determine the contents of the model. If the file is successfully read, the import process automatically begins. An import log, similar to the one shown in Figure 1-3, is displayed, providing information on the status of the import process. Upon completion of the import process, the import log remains on the screen and should be reviewed before proceeding. Figure 1.2: Prompt to append model 1.2 Review Import Log The import log is visible during the entire import process and presents information on the status of the read and translation steps. The log can be saved to a Rich Text File (RTF) using the File menu > Save Log As... command on the form. Messages are categorized into the following three types and can be hidden/displayed in the log form by clicking on the buttons at the top of the form or using the commands on the View menu of the form. 1-2 Review Import Log Chapter 1 Introduction Figure 1.3: Import log Messages – these messages are for information purposes only and do not affect the imported model. Typical messages tell the number of objects read or imported. Warnings – these messages highlight items which should be reviewed after importing the model. Typically these messages are related to assumptions made during the translation process where there is not a direct one-to-one translation. Errors – these messages highlight items which resulted in an error during the import process and should be resolved before using the imported model. Typically these messages are related to incorrect values in the SACS file or an issue during the translation process. The import log should be reviewed after the import process is complete and any issues should be resolved before proceeding to use the imported model. It is also recommended that the imported model be checked for accuracy. Review Import Log 1-3 2 Read the SACS Input File This chapter describes the process of reading the SACS input file which is the first step in the import process. 2.1 Input File Format The SACS input file is composed of “lines”. Each input line is read individually and the content parsed into appropriate fields. The following sections define which “lines” are read during the import. 2.2 “Lines” Read The following list of “lines” are read in during the import process. Details of the translation of the “line” data are provided in the following chapters. It is recommended that the following chapters describing the translation be reviewed as some items on the “lines” may not be translated. For further information about any of the “lines”, please refer to the SACS User's Manual. SACS IV OPTIONS Input, analysis, and output options SECT Member cross section properties GRUP Material and other properties MEMBER Member connectivities MEMB2 Additional member data MEMBER OFFSETS Member offsets “Lines” Read 2-1 SACS Import 2-2 PGRUP Plate material and other properties PLATE Plate connectivities PLATE OFFSETS Plate offsets JOINT Joint coordinates JOINT PERSET Joint permanent settlements JOINT ELASTI Joint elastic supports LOADCN Load condition specification LOAD UNIF Member distributed loads LOAD DMOM Member distributed moments LOAD CONC Member concentrated loads LOAD MOMT Member concentrated moments LOAD JOIN Joint concentrated loads LCOMB Load combinations “Lines” Read 3 Translate the Model to SAP2000 This chapter describes the translation of the SACS model to SAP2000. Only the “lines” defined in Chapter 3 as being read in are discussed in this chapter. Note that not all features on each “line” are imported, so it is important to review the following sections to determine what parts of the model are imported. For further information about a particular feature or capability of SAP2000, refer to the SAP2000 manuals available from the Help menu > Documentation... command or to the interactive help, available from the Help menu > Contents and Index... command. 3.1 SACS IV This section describes the imported “lines” from the SACS IV input file. 3.1.1 OPTIONS “Line” The OPTIONS “line” provides input, analysis, and output options. Only the units and code check options are currently read and used to define the database units and steel frame design code during translation. SACS IV 3-1 SACS Import Options SAP2000 Usage SACS Field Database units Units Steel frame preferences design code Code Check Options Table 3.1: OPTIONS "line" translation 3.1.2 SECT “Line” The SECT “line” defines dimensions and properties for frame section properties. These lines are read in but not directly imported. The data is used while importing the various group lines for frame sections. Table 3.2 shows the mapping of the various section types. Section Types SAP2000 Field SACS Field not translated Section Label I/Wide flange WF – wide flange, WFC – wide flange compact Pipe TUB – tube section Tube BOX – box section, RTB – rectangular tube Channel CHL – channel section Angle ANG – single angle section Double Angle DAL – double angle section General PRI – prismatic element Tee TEE – tee section Nonprismatic CON – conical transition section not translated PLG – plate girder not translated BLB – bulb plate cross section not translated LNR – launch runner not translated JUL – jack-up leg not translated PGD – double web plate girder not translated PGB – boxed plate girder not translated PGU – unsymmetrical plate girder Table 3.2: SECT “line” shape translation 3-2 SACS IV Chapter 3 Translate the Model to SAP2000 3.1.3 GRUP “Line” The GRUP “line” defines section and material properties for similar steel frames. The GRUP lines are converted to material properties and frame section properties in SAP2000. If material properties are specified, they overwrite the values specified on the SECT “lines” or in global definitions. Table 3.3 shows the mapping to the material properties. Material Properties SAP2000 Field SACS Field Material Name N/A – taken as “SACS#” where # is a unique number Material Type N/A – taken as Steel Weight per Unit Volume Steel Density Mass per Unit Volume N/A – automatically calculated by SAP2000 Modulus of Elasticity E Poisson's Ratio N/A – calculated from the elastic and shear moduli Coefficient of Thermal Expansion N/A – SAP2000 defaults used Shear Modulus G Minimum Yield Stress SY Minimum Tensile Stress N/A – taken as 1.3*Fy Effective Yield Stress N/A – taken as 1.1*Fy Effective Tensile Stress N/A – taken as 1.1*Fu Table 3.3: GRUP "line" material properties translation The section properties are used to define new frame section properties in SAP2000. Table 3.4 shows the mapping to the frame section properties. Section Properties SAP2000 Field SACS Field Section Name Group Label Material N/A – based on the name assigned to the material properties on the GRUP or SECT “line” not translated Redesign Code Outside Diameter (Pipe Section) Tubular Outside Diameter Wall Thickness (Pipe Section) Tubular Wall Thickness Nonprismatic Segment Length Segment Length Table 3.4: GRUP "line" section properties translation SACS IV 3-3 SACS Import Additional fields in the GRUP “line” are translated according to the mapping in Table 3.5. Other GRUP Fields SAP2000 Field SACS Field not translated Gap Element Type Member Design Overwrite Cb Cb Option Member Design Overwrite Cm Member Class not translated Average Joint Thickness Member Design Overwrite Effective Length Factor Ky Member Design Overwrite Effective Length Factor Kz not translated Tubular Ring Spacing not translated Tubular Shear Area not translated Flooding Table 3.5: GRUP "line" other parameters translation 3.1.4 MEMBER “Line” The MEMBER “line” defines frame connectivity and properties. The MEMBER lines are translated to line objects in SAP2000. If properties are specified that also exist on the GRUP/GRUPL “lines”, they overwrite the values specified on the GRUP/GRUPL “lines” or in global definitions. Table 3.6 shows the mapping to the line objects. Members with a length shorter than two times the SAP2000 merge tolerance are imported as linear link elements. The link property uses the GRUP label and is therefore easily identifiable for further editing as required. Multiple members connected between the same two joints are not imported, only the first member is imported. 3-4 SACS IV Chapter 3 Translate the Model to SAP2000 Line Object and Assignments SAP2000 Field SACS Field Start Joint (I) A End Joint (J) B Section Property Group Label not translated Stress Output Tension/compression limit assignment. If tension only, Gap Element Type compression limit set to 0; if compression only, tension limit set to 0. Releases End Fixity Values Local Axes Angle assignment Chord Angle Used to define local axes direction using advanced local axes assignment with two joints and a plane Joint Z-axis Reference Joint not translated Flood Condition Specifies whether overwrites are assigned for effective length factors or unbraced lengths K or L Option not translated Avg Joint Thickness Member Design Overwrite Effective Length Factor or Unbraced Length Ratio KY or LY Member Design Overwrite Effective Length Factor or Unbraced Length Ratio KZ or LZ not translated Unbraced Length or Shear Mod Property modifiers on the weight and mass density are assigned to the line. Steel Density not translated Stress and UC Segments not translated Effective Diameter for Added Mass Table 3.6: MEMBER "line" object and assignments translation 3.1.5 MEMBER OFFSETS “Line” The MEMBER OFFSETS “line” defines offsets assigned to a member. Table 3.7 shows the mapping to the line objects. SACS IV 3-5 SACS Import MEMBER OFFSETS Fields SAP2000 Field SACS Field Frame Joint Offsets to Cardinal Point Joint A – X, Y, Z Frame Joint Offsets to Cardinal Point Joint B – X, Y, Z Table 3.7: MEMBER OFFSETS "line" parameters translation 3.1.6 PGRUP “Line” The PGRUP “line” defines material and section properties for area objects. The material property values are used to define new steel material properties in SAP2000. The material properties from all of the PGRUP “lines” are checked for duplicates before creating the required SAP2000 material properties. Table 3.8 shows the mapping to the material properties. Material Properties SAP2000 Field SACS Field Material Name N/A – taken as “SACS#” where # is a unique number Material Type N/A – taken as Steel Weight per Unit Volume Weight Density Mass per Unit Volume N/A – automatically calculated by SAP2000 Modulus of Elasticity E Poisson's Ratio Poisson's Ratio Coefficient of Thermal Expansion N/A – SAP2000 defaults used Shear Modulus N/A – automatically calculated by SAP2000 Minimum Yield Stress Yield Stress SY Minimum Tensile Stress N/A – taken as 1.3*Fy Effective Yield Stress N/A – taken as 1.1*Fy Effective Tensile Stress N/A – taken as 1.1*Fu Table 3.8: PGRUP "line" material properties translation The section properties are used to define new area section properties in SAP2000. Table 3.9 shows the mapping to the section properties. 3-6 SACS IV Chapter 3 Translate the Model to SAP2000 Section Properties SAP2000 Field SACS Field Section Name Plate Group Label not translated Panel Designation not translated Auto Neutral Axis Offset Thickness – Membrane/Bending Plate Thickness Type – taken as Shell Plate Type Material Name N/A – based on the name assigned to the material properties on the PGRUP “line” Material Angle N/A – taken as 0 not translated Plate Local Z Offset not translated Stiffener Data Stiffness Modifiers N/A – not set, defaults assumed Table 3.9: PGRUP "line" section properties translation 3.1.7 PLATE “Line” The PLATE “line” defines three or four-sided plate elements. The joints are used to define new area objects in SAP2000. The Plate Group Id specifies the area section property. If no Plate Group Id is specified a material property and area section property are defined according to the mapping for the PGRUP line. Table 3.10 shows the mapping to the area object. Area Object SAP2000 Field SACS Field Label Plate Name Point 1 Joint A Point 2 Joint B Point 3 Joint C Point 4 Joint D Section Name Plate Group Label not translated 'RP' 'SK' Thickness – Membrane/Bending Plate Thickness not translated Offset Option Table 3.10: PLATE "line" object translation SACS IV 3-7 SACS Import If material properties are specified, they overwrite the values specified on the PGRUP “lines” or in global definitions. Table 3.11 shows the mapping to the material properties. Material Properties SAP2000 Field SACS Field Material Name N/A – taken as “SACS#” where # is a unique number Material Type N/A – taken as Concrete Weight per Unit Volume Weight Density Mass per Unit Volume N/A – automatically calculated by SAP2000 Modulus of Elasticity Elastic Modulus E Poisson's Ratio Poisson's Ratio U Coefficient of Thermal Expansion N/A – SAP2000 defaults used Shear Modulus N/A – automatically calculated by SAP2000 Minimum Yield Stress Yield Stress SY Minimum Tensile Stress N/A – taken as 1.3*Fy Effective Yield Stress N/A – taken as 1.1*Fy Effective Tensile Stress N/A – taken as 1.1*Fu Table 3.11: PLATE "line" material properties translation 3.1.8 JOINT “Line” The JOINT “line” defines coordinates and restraints for point objects. Table 3.12 shows the mapping to the joint data. Joint Properties SAP2000 Field SACS Field X X-coordinate larger + X-coordinate smaller value Y Y-coordinate larger + Y-coordinate smaller value Z Z-coordinate larger + Z-coordinate smaller value Restraint Joint Fixity Values Table 3.12: JOINT "line" translation 3-8 SACS IV Chapter 3 Translate the Model to SAP2000 3.1.9 JOINT PERSET “Line” The JOINT PERSET “line” defines permanent settlement conditions for joints. The permanent settlements are applied as ground displacements in SAP2000. The Basic Load Case Id specifies the load pattern to assign the displacement loads to. If no Basic Load Case Id is specified, the displacements are applied to all load cases. Table 3.13 shows the mapping to the ground displacement load. Ground Displacement Assignment SAP2000 Field SACS Field Label Joint Name Translation Global X, Y, Z Specified Joint Displacements Rotation About Global X, Y, Z Specified Joint Rotations Load Pattern Name Load Condition Name Table 3.13: JOINT PERSET "line" translation 3.1.10 JOINT ELASTI “Line” The JOINT ELASTI “line” defines spring supports for joints. Table 3.14 shows the mapping to the joint spring assignment. Joint Spring Assignment SAP2000 Field SACS Field N/A – joint to which the spring is assigned Joint Name Translation 1, 2, 3 Translational Spring Rates Rotation About 1, 2, 3 Rotational Spring Rates Coordinate System N/A – taken as Local Options N/A – taken as Add to Existing Loads not translated Joint 2 not translated Joint 3 Table 3.14: ELASTI "line" translation SACS IV 3-9 SACS Import 3.1.11 LOADCN “Line” The LOADCN “line” defines a load case id. A SAP2000 load pattern and load case are created for each load case id. Table 3.15 shows the mapping to the load patterns. Load Pattern Properties SAP2000 Field SACS Field Load Pattern Name Load Condition Name Type N/A – taken as Other Self Weight Multiplier N/A – taken as 0 Auto Lateral Load Pattern N/A Table 3.15: LOADCN "line" translation 3.1.12 LOAD UNIF “Line” The LOAD UNIF “line” defines distributed forces for line objects. Table 3.16 shows the mapping to the uniform line forces. Distributed Line Forces Assignment SAP2000 Field SACS Field Load Pattern Name Taken as last specified LOADCN in input file Load Type N/A – taken as Forces Direction Load Direction X, Y, or Z Line Object Start Joint I Joint A Line Object End Joint J Joint B Distance 1 Distance from End A to Beginning of Distributed Load Load 1 Beginning Distributed Load Value Distance 2 – taken as Distance 1 plus Load Length Distance Over Which Load Acts Load 2 Final Distributed Load Value Coord Sys Coordinate System for Load not translated Comments Table 3.16: LOAD UNIF "line" load translation 3 - 10 SACS IV Chapter 3 Translate the Model to SAP2000 3.1.13 LOAD DMOM “Line” The LOAD DMOM “line” defines distributed moments for line objects. Table 3.17 shows the mapping to the distributed line moments. Distributed Line Moments Assignment SAP2000 Field SACS Field Load Pattern Name Taken as last specified LOADCN in input file Load Type N/A – taken as Moments Direction Moment Direction X, Y, or Z Line Object Start Joint I Joint A Line Object End Joint J Joint B Distance 1 Distance from End A to Beginning of Distributed Moment Load 1 Beginning Distributed Moment Value Distance 2 – taken as Distance 1 plus Load Length Distance Over Which Moment Acts Load 2 Final Distributed Moment Value Coord Sys Coordinate System for Moment not translated Comments Table 3.17: LOAD DMOM "line" load translation 3.1.14 LOAD CONC “Line” The LOAD CONC “line” defines concentrated loads for line objects. Table 3.18 shows the mapping to the concentrated line loads. SACS IV 3 - 11 SACS Import Concentrated Line Load Assignment SAP2000 Field SACS Field Load Pattern Name Taken as last specified LOADCN in input file Load Type N/A – taken as Forces Direction Load Direction X, Y, or Z Line Object Start Joint I Joint A Line Object End Joint J Joint B Distance 1 Distance from Joint A to Concentrated Force Load 1 Concentrated Force Value Coord Sys Coordinate System not translated Comment Table 3.18: LOAD CONC "line" load translation 3.1.15 LOAD MOMT “Line” The LOAD MOMT “line” defines concentrated moments for line objects. Table 3.19 shows the mapping to the concentrated line moments. Concentrated Line Moment Assignment SAP2000 Field SACS Field Load Pattern Name Taken as last specified LOADCN in input file Load Type N/A – taken as Moments Direction Load Direction X, Y, or Z Line Object Start Joint I Joint A Line Object End Joint J Joint B Distance 1 Distance from Joint A to Concentrated Moment Load 1 Concentrated Moment Value Coord Sys Coordinate System not translated Comment Table 3.19: LOAD MOMT "line" load translation 3 - 12 SACS IV Chapter 3 Translate the Model to SAP2000 3.1.16 LOAD JOIN “Line” The LOAD JOIN “line” defines joint forces or moments for point objects. Table 3.20 shows the mapping to the point loads and moments. Point Load and Moment Assignment SAP2000 Field SACS Field Load Pattern Name Taken as last specified LOADCN in input file Point Label Joint Name Force Global X or Force 1 Force FX Force Global Y or Force 2 Force FY Force Global Z or Force 3 Force FZ Moment About Global X or Moment About 1 Moment MX Moment About Global Y or Moment About 2 Moment MY Moment About Global Z or Moment About 3 Moment MZ Coordinate System N/A – taken as Global not translated Remarks Table 3.20: LOAD JOIN "line" load translation 3.1.17 LCOMB “Line” The LCOMB “line” defines load combinations. Table 3.21 shows the mapping to the load combinations. Load Combination Definitions SAP2000 Field SACS Field Load Combination Name Combination Name Load Case Name Load Case Name Scale Factor Load Factor Table 3.21: LCOMB "line" combination translation SACS IV 3 - 13
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