Date post: | 10-Dec-2015 |
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Agenda Analysis Options
Analysis type 2D,3D,Truss and Floor ( Grillage) Modelling
The Modelling Process involves providing Input Modelling using AutoCAD
Importing DXF (Drawing Exchange Format File into STAAD)
Loading, Supports, Constraint and Properties Postprocessing
Understanding the Output of Analysis
Analysis Options In STAAD Pro Following four Structural forms
can be analysed based on Degrees of Freedom (DOF) of Each Joint Space ( Each Joint having 6 DOFs,
Full 3D analysis) Plane (It is In-Plane Analysis, each
joint having 3 DOFs, two displacements and one rotation
Floor (It is Out-of-plane Analysis, Each joint having 3 DOFs, One Displacement and One Rotation
Truss ( Members can take only Axial Forces i.e. Compression or Tension)
Generating Input file STAAD Pro Provides
two options for generating Input Structure Graphical User
Interface (GUI) The Text File ( having
file Extension STD) 2D Grid to Add
Member using SNAP Option
STAAD Pro Overview Modelling
Geometry General Analysis Design
Post Processing Joint Displacements / Support Reactions Member Forces Element Forces Mode Shapes / Deflected Shapes
Geometry Add / Edit Joint Co-
Ordinate Add Beam Using SNAP
Options JOInt COOrdinates
1 0 0 0;2 10 0 0;n x y z;
MEMber INCidencesm i_node j_node1 1 2;
Geometry Copy / Paste Option for
JOINTS/MEMBERS ( Click on Reference Point, Similar to AUTOCAD reference Pt.)
Translational Repeat Circular Repeat
General Assigning Property
Steel Sections Prismatic Sections Local Axis Orientation ( Beat Angle)
Specification Load & Definitions Material
Young’s Modulus, Poisson’s Ratio, Density, Coefficient of Thermal Expansion
General - Property
Member 3 is having Joint 5 as START Joint and Joint 6 as END Joint
For Beams Local Y is along Global Y
Rectangular Section Beam Local Axis
Blue - Local X Red - Local Y Green – Local Z
Cross Section Dimensions
YD Dimension along Local Y Axis
ZD Dimension along Local Z Axis
YD
ZD
Local Z
General - Spec
Specification Node (Constraints)
Master Slave ( Master Node and Slave Nodes)
Rigid ( All Six DOFs are Same)
Spec - Beam
Specification Beam
Moment Release Tension/Compression
only Member Offset Truss
Support – Restraint to Joints Boundary
Condition to Joints Pinned Fixed
Support – Fixed But Roller Support
Node_ID FIXED BUT FX FZ MX MY MZ
Spring Supports For Pile Foundations Node_ID FIXED BUT KFY ??? FX FZ MX MY MZ
Loads & Definitions Primary Load Cases
First Define Load Case
Load Application Self Weight Joint Loads Member Loads Element Loads Earthquake Loads
Primary Load Case – Joint Loads Application of Forces and
Moments in Three Global Directions at Joint
CommandJOINT LOAD1 FX 10 FY 20 FZ 30 MX 40 MY 50 MZ
60
Joint /Member /Area /Floor Loads
Primary Load Case – Member Load Uniformly Distributed Force ( Uniform Force) Uniformly Distributed Moment (Uniform Moment) Linear Varying Load Triangular Load
Member Load – Concentrated Force
Load Combination
Load Factors
Primary Load Cases
Load Combination No
Perform Analysis
Commands