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ProSteel - Substation Structural SolutionIntroduction:The primary purpose of the solution is to offer a complete structural solution to Chinese power design institutes. Many of these institutes are already using STAAD.Pro for structural analysis and design and Bentley Substation for electrical design. But, the workflow was not integrated, requiring manual data exchange. The solution offers complete solution by integrating three major components of the workflow. Structural modeling of substation structures along with connection detailing and fabrication drawingsStructural analysis and design as per Chinese design standardsPlacing structural models in Bentley Substation and auto creation of hook points to layout cablesAs name suggests, this solution is mainly focused on structural components of substation design. After surveying many engineers and conducting extensive research, we formulated a solution which we think should offer the followings:A physical modeling system for all structural frames and componentsUse trusted structural analysis and design programsLatest guidelines and design standardsInbuilt library of standards frames and connectionsAutomatic drawing generation along with bill of materialsUse of real structural frames inside Bentley SubstationAuto generation of hook pointsDesign of foundationsBentley’s ProStructures product was chosen to address modeling as well as detailing and drawing requirements. STAAD.Pro along with SSDD were the default choice for structural analysis and design requirements including substation specific load generations and design checks. Finally Bentley Substation was updated to host structural frames generated in ProStructures.ProStructures: physical modeling of structural frames, connection detailing, drawing and BOMSTAAD.Pro: three dimensional frame analysisSSDD: wind and seismic load generation, load combination, design checks and optimizationBentley Substation: electrical design of substation infrastructureWorkflow Diagram:Structural Synchronizer or ISM was used to integrate all the products to create an efficient workflow. The following diagram describes the workflow.Structural frames can be modeled in ProStructures by using smart wizards or manually. ISM is used to transfer physical model to STAAD.Pro. A simplified new version of SSDD is now available to cater very specific requirements of Substation design, based on Chinese design standards. Wind load, seismic load and load combination generation wizards are implemented to apply loads. Frame members are resized during code checks and final sizes are exported back to ISM repository. ProStructures imports final model and adds steel connections to the physical model. Different drawings including fabrication drawing can be generated using inbuilt powerful drawing center. STAAD Foundation Advanced imports STAAD.Pro model for foundation design. It supports Chinese concrete design standards to design common foundations like isolated footing, combined foundation, pile cap and mat foundation.The final ProStructures model can be placed in Bentley Substation to generate hook points and layout flexible cables between hook points.Suggested step by step workflow: A new ‘Substation” group now hosts 24 frames and connections to play the central role in “Substation Structural” workflow. The frames and connections are listed below. For detailed description, please review the relevant section of the help file. Substations frames and trusses support dual model status, “Physical model” used for the detailing and “Analytical model” for the data exchange with STAAD.Model substation components without connections50482543243500Prepare model to be transferred for analysis by running the convert command. This command automatically Switches substation frames & trusses from physical to analytical model and adds connecting shapes where supporting points are required between trusses and frames.Splices on frame legs are relocated to create a connection point with horizontal members.Readjust truss brace members to center of gravity line while ignoring gaps and offsets.Disable editing of substation components in analytical model state Send to ISM or Structural SynchronizerImport ISM model into STAAD.Pro, apply changes if required and update ISM model.Note: only size changes are accepted for this solution to insure data synchronization integrity between ProStructures and STAAD.Pro models.Wind load and load combinations are generated in SSDD as per Chinese design standardsPerform design check and optimize member sizes in SSDD, update member sizes in STAAD.Pro and finally update ISM repositoryUpdating ProStructures model from ISM, automatically updates any/all shape size changes for trusses and frames.Convert Analytical model to Physical model and continue modeling by adding connections At any time ProStructures models can be attached as reference to Bentley Substation projects and hook point are inserted by detecting PS truss load points from the reference model Drawing and BOM can be created using traditional ProStructures tools and methods List of ProStructures connectionsThe following substation specific standard connections are now added in ProStructures for connection modeling, detailing and drawing generation.Connection NameDescriptionRepresentative imageCombination horizontal brace connectionThis connection can also be used on any pipe or hollow HSS tubes as supporting shapes, and equal or unequal angles as connecting shapes34226515049500CoverPlate connectionThis connection can be placed on any horizontal, vertical, sloping or skewed pipes or square, rectangular and circular hollow shapes420370000Multi frame connectionThis tool lets users generate a series/array of identical Symmetric A Frames, Trestles, Vertical A Frames or Single Frames in one processDouble brace connectionIt can be used on triangular and rectangular substation trusses to connect bracing members with chords.217805000Double frame capIt is used as a cap to be placed on symmetric A-Frames and TrestlesDouble leg brace connectionThis tool can also be used on any pipe or hollow HSS tubes as supporting shapes, and equal or unequal angles as connecting shapesHorizontal support plateThis tool can be placed along any vertical, sloping or skewed pipes or square, rectangular and circular hollow shapesLightning rodLightning Rods can be placed on a Single frame, Symmetric A Frame, Vertical A Frame, Trestle or by specifying a pointSimple StructureThe Simple Structure is a parametric tool to create simple frames. Single brace connectionThis tool can also be used on any pipe or hollow HSS tubes as supporting shapes, and equal or unequal angles as connecting shapesSingle frame capSingle Frame Caps can be placed on any vertical, sloping or skewed pipes or square, rectangular and circular hollow shapesSingle leg brace connectionThis tool can also be used on any pipe or hollow HSS tubes as supporting horizontal brace shapes, and equal or unequal angles as connecting shapesSingle Frame connectionSingle Frame is a parametric tool which can be used to create a vertical leg frameSymmetric A-FrameThis tool can be used to create a symmetric A-Frame for substation structuresTrestle frameThis tool can be used to create a Trestle frame for substation structuresTrestle Cap PlateThis is a parametric tool to connect all trestle legs by a cap plateTriple BraceA connectionThis tool can be used on any pipe or hollow HSS tubes as supporting shape, and equal or unequal angles as connecting shapes, provided that the connecting shape(s) are pre-offset from the center of the supporting shape by the plate thickness.Truss BuilderThis tool is used for creating single beam trusses, triangular or rectangular box trusses. Trusses can be created by specifying start and end points followed by the vertical direction of the truss or by selecting substation frames (Trestle, Vertical Frame, A-Frame or Single Frame). When using the frame selection method, both selected frames must be perpendicular or parallel to each other, and their centers should be inline.Truss ConnectorThis tool lets users automatically populate Single, Double and Triple brace connections throughout substation triangular and rectangular trusses.Users can select a mix of any number of substation triangular and rectangular trusses.Truss SupportThis tool can be used to generate a truss support parametricallyVertical A-FrameThis tool can be used to create a specialized vertical frame where one of the legs is vertical.Vertical A-Frame CapThis tool can be used to generate a cap for vertical A-frame parametricallyBrace Support PlateThis tool is used to generate brace support plates on Symmetric A Frames, Vertical A Frames and Trestle, or any horizontal shape, preferably pipes or square, rectangular and circular hollow shapes.SSDD for SubstationA new program is now created to cater very specific needs of substation design as per Chinese standards. The major features which were added are:Structure type recognitionAutomatically recognition Truss Beam, A-Frame and Lightning Rod;User can assign the rules when recognition member type, for example, use can assign the group name to recognition:LightningRod prefix means Lightning RodFrameColumn prefix means ColumnTrussBeam prefix means BeamWind load generationThe wind load wizard in SSDD can generate all the wind load types based on DL/T 5457-2012Generation four directional wind load, these wind load cases will be used in automatic load combinationLoad combination generationSSDD can automatically generate load combination as per DL/T 5457-2012Use key words to separate different load case typeAuto load combination can generate two kinds type of load combinations, one for forces check, the other for displacement checkDesign parameters templatesProgram includes default design templates for A-Frame, trestle, truss member, lightning Rod, Truss Beam etc.Design checksPerform design checks as per GB 50017-2003Member Stability check as per DL/T 5457-2012Displacement check as per DL/T 5457-2012 Bentley Substation enhancementsBentley Substation program can now reference ProStructures models, so a realistic structural model can be used instead of a place holder. Hook points can be generated using enhanced hook point tool to layout flexible cables between hook points. The new “Update” button in “Hook Points Manager” UI allows user to modify existed hook points by type, color and rotation settings.Generate Hook Points from Load Points:This feature covers the requirements of generating hook points from load points. Feature summary:The Load points can be added in Truss Builder while creating the model in ProStructures The Load points include coordinates of hook points along with load case information. User can define load points in the table above. Left table can be used to define load points and their position. In future, we plan to implement the force assignment table to define load case information for every load point. Please note that the relation between left table and right table will be 'one row to multiple rows', Details of left table: Points: it represents load point index and non-editableX Offset: it defines the load point offset position in the direction of the chord lengthBF column: option to apply load on the front side of the bottom chord BB column: option to apply load on the back side of the bottom chord TF column: option to apply load on the front side of the top chord TB column: option to apply load on the back side of the top chordY Offset: load point offset in Y direction, where Y axis is vertically up Z Offset: load point offset in Z direction, where Z axis is out of plane going into the plane Add: add a new load pointRemove button: delete the selected load pointPoints Count: number of load points Same Offset: reset x, y and z offsets for all load pointsShow Load Points: toggle to show load points ProStructures model may include truss builder along with load point information. Bentley Substation program can reference that model and can generate hook pointsThe Hook Point Manager dialog in Bentley Substation can be used to create hook points based on the load points Top view:Front view:3d view:Workflow:Generate Hook point:Refresh Hook point: ................
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