analysis and design of dupont's steel framing systems using
TRANSCRIPT
Analysis and Design of DuPont’s Steel Framing Systems Using WinSCADS and GT STRUDL
Jeffery A. Stokes, PEE.I. Du Pont De Nemours and Company
20th Annual Users Group Meeting & Training Seminar
June 23 - 26Las Vegas, NV
Magdy S. Roufaiel, PhD, PERoufaiel Associates Int’l, Inc.
WinSCADS General Overview
WinSCADS is DuPont’s 3D structural modeling tool used to automate structural steel design process.
Structural Computer Aided Design System
Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface.
Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to
WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis.
WinSCADS Interface with Other Systems. The Design Process
Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface.
Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to
WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis.
WinSCADS Interface with Other Systems. The Design Process.
WinSCADS General Overview (Cont.)
1970s – DuPont FRAME Program.1980s – SCADS - VAX system using CRAY NASTRAN
for analysis..1990s – PC-SCADS, a DOS version (GT-STRUDL, PD-
STRUDL, and STAAD).1998 – WinSCADS - Windows-based version was released
(Microstation-based graphics for model display).2004 to date – User interface has been redeveloped to
utilize OpenGL for graphics and to improve user interaction with the system.
Historical Background
WinSCADS General Overview (Cont.)
Hundreds of DuPont buildings have been designed by the system and the data has been saved on our CES server.
When modifications or additions are made to buildings, we are able to utilize the existing models since compatibilities have been maintained over the years
May build the “same” Facility at another US site or overseas. Design loads may change (wind or seismic)
Historical Background (Cont.)
WinSCADS utilizes GT STRUDL for the structural analysis tasks of the system. As structural steel model evolves the information is uploaded as necessary to the
3D Plant Design system (PDMS). Final design model is transferred to SDS2 or X-Steel for electronic detailing.
WinSCADS General Overview
DRAFTING
UPDATE CONSTRUCTION APPLICATIONS
DETAILING
PDMS
REFINER
ADD-SIZE
FOUNDATION
CONNECTIONS
DISPLACEMENT
MODEL GENERATION
STATIC ANALYSIS
STEEL CODE CHECK
GRAPHICAL REVIEWANALYSIS MODEL
CONSTRUCTION MODELANALYSIS RESULTSDESIGN RESULTS
REPORTS GENERATION
GEOMETRY, LOADINGS,MASS, USER-TABLES
FREQUENCY ANALYSIS
User Interface
WinSCADS General Overview (Cont.)
Model Generation – Geometry & Loading
User Interface
WinSCADS General Overview (Cont.)
Model Generation – Static & Frequency
WinSCADS General Overview (Cont.)
Model Generation – User-defined Steel Table
User Interface
User Interface
WinSCADS General Overview (Cont.)
Graphical View
WinSCADS General Overview (Cont.)
Select the elements, floors or elevations to view
Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface.
Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to
WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis.
WinSCADS Interface with Other Systems. The Design Process.
WinSCADS Data Model
WinSCADS model generation uses a system of floor elevations, intersecting column lines, bay widths, center lines of equipment, and other geometric object.
Process is analogous to laying out an engineering drawings, familiar to engineers and designers working with the chemical and industrial facilities.
The model is built floor by floor with the system automatically bringing the columns up to each level to create a 3D model.
WinSCADS Data Model (Cont.)
Common elements like vertical bracing, floor openings and equipment supports are automated.
Beams are generated as physical members rather than a series of analysis members.
First cut steel sizes based on the gravity loading are generated automatically and added to the database.
WinSCADS Data Model (Cont.)
There is a multitude of default values assigned to types of members to save time. Fixed ends for beams framing into columns Pinned ends for interior framing K-factors for columns and bracing Assigned UBL values look not just a member
framing in but also direction. Others …
Internally, WinSCADS generates database tables to store and manipulate all the input and output data.
WinSCADS Data Model (Cont.)
WinSCADS model generation uses a system of floor elevations
WinSCADS Data Model (Cont.)
…. and intersecting column lines and bay widths
WinSCADS Data Model (Cont.)
The model is built up floor by floor with the system automatically bringing the columns up to each level to create a 3D model
WinSCADS Data Model (Cont.)
Next Floor ……
WinSCADS Data Model (Cont.)
Physical (Construction) Model
Specified LoadsAnalysis ModelAnalysis Loads
WinSCADS Data Model (Cont.)
Major Components of WinSCADS Internal Database Model
Building Control
Parameters
User-defined System Settings
User-defined Building Settings
Floors X-Column Lines
Y-Column Lines
Blocks X-Bents
Y-Bents
Beams Columns
Gravity Loads
Uniform Wind/Seismic Loads
Equipment Openings
Horizontal Loads
Point/Line Wind/Seismic Loads
Diaphragms
Q-Joints Mass
Grid Points Load Cases
Load Combinations
Frame Elements Plate Elements
System Steel Tables
User-defined Steel Tables
Static Results Frequency Results
Code-Check Results
WinSCADS Data Model (Cont.)
WinSCADS Built-in Analysis/Design Capabilities
ANALYSIS
Static – Linear & P-Delta
Frequency Analysis
Response Spectrum
DESIGN CODES
ASD9 LRFD
ASD8 CISC
BSI NEN
I/O UNITS
ENGLISH
METRIC
SI
STEEL TABLES
STEEL SECTIONS
W WB WC
C, WT
L, SL, LL
TS, SP
S1, S2, S3
Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface.
Automation of GT STRUDL input-data preparation.
Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to
WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis.
WinSCADS Interface with Other Systems. The Design Process.
Automation of GT STRUDL input-data preparation
Prepare GT STRUDL Input …
Automation of GT STRUDL input-data preparation (cont.)
View GT STRUDL Input …
Running GT STRUDL from within WinSCADS
Execute an Analysis/Design Cycle …
Previewing results using GT STRUDL
Previewing results using GT STRUDL (cont.)
Previewing results using GT STRUDL (cont.)
Transferring results from GT STRUDL to WinSCADS
Transferring results from GT STRUDL to WinSCADS (Cont.)
Translates GT STRUDL DBX files to WinSCADS Format
Previewing results using WinSCADS
Previewing results using WinSCADS (Cont.)
Previewing results using WinSCADS (Cont.)
Previewing results using WinSCADS (Cont.)
Previewing results using WinSCADS (Cont.)
Previewing results using WinSCADS (Cont.)
Design data
Natural frequency and mode shapes analysis
Natural frequency and mode shapes analysis (cont.)
Natural frequency and mode shapes analysis (cont.)
Natural frequency and mode shapes analysis (cont.)
Natural frequency and mode shapes analysis (cont.)
Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface.
Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to
WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis.
WinSCADS Interface with Other Systems. The Design Process.
WinSCADS Interface with Other Systems
DRAFTING
UPDATE CONSTRUCTION APPLICATIONS
DETAILING
PDMS
REFINER
ADD-SIZE
FOUNDATION
CONNECTIONS
DISPLACEMENT
MODEL GENERATION
STATIC ANALYSIS
STEEL CODE CHECK
GRAPHICAL REVIEWANALYSIS MODEL
CONSTRUCTION MODELANALYSIS RESULTSDESIGN RESULTS
REPORTS GENERATION
GEOMETRY, LOADINGS,MASS, USER-TABLES
FREQUENCY ANALYSIS
WinSCADS Interface with Other Systems (Cont.)
WinSCADS Interface with Other Systems (Cont.)
WinSCADS Interface with Other Systems (Cont.)
DRAFTING
WinSCADS Interface with Other Systems (Cont.)
DRAFTING
WinSCADS Interface with Other Systems (Cont.)
DRAFTING
WinSCADS Interface with Other Systems (Cont.)
DRAFTING
WinSCADS Interface with Other Systems (Cont.)
PDMS
WinSCADS Interface with Other Systems (Cont.)
DETAILING
Presentation Outline WinSCADS General Overview. WinSCADS Data Model. WinSCADS-GT STRUDL Interface.
Automation of GT STRUDL input-data preparation. Running GT STRUDL from within WinSCADS. Previewing results using GT STRUDL. Transferring results from GT STRUDL to
WinSCADS. Previewing results using WinSCADS. Natural frequency and mode shapes analysis.
WinSCADS Interface with Other Systems. The Design Process.
The Design Process
WinSCADS “Working” model ….
New portions of structure added
Floor elevation changes, infill steel revised, etc, changes & changes
The Design Process (cont.)
PDMS model needs to be updated continually as the design progresses
Model viewed from WinSCADS
Model viewed from GTStrudl
Changes are automatically included in the GTStrudl Model since the analysis model is regenerated each time
The Design Process (cont.)
Microstation Design Drawings are generated and updated
until Construction Release quality
The Design Process (cont.)
The Design Process (cont.)
Update PDMS, Drawings, SDS2
Or individually
Drawings & SDS2 Model are transferred to detailing firm to create erection drawings via SDS2
The Design Process (cont.)
From which they create connection details via SDS2
The Design Process (cont.)
Steel is fabricated and sent to the field for erection
The Design Process (cont.)
And finally to project completion. Via WinSCADS + GTStrudl, Microstation, PDMS and SDS2
The Design Process (cont.)
Presentation
Thank you
Questions