STAAD PPT

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Structural analysis and design:

Structural analysis and design G.DINESH KUMAR B.SNEHA

OVER VIEW OF STAAD-PRO:

OVER VIEW OF STAAD-PRO Staad pro is a structural analysis and design computer program. The commercial version staad-pro supports several steel, concrete, timber design codes.

GRAPHICAL ENVIRONMENT:

GRAPHICAL ENVIRONMENT Graphical user interface of staad-pro covers the topics Model generation. Structural analysis and design. Result verification. Report generation.

History of Staad Pro Software:

History of Staad Pro Software STAAD stands for St ructural A nalysis A nd D esign – One of first commercial software in world STAAD-III for DOS STAAD first versions were built for DOS Operating System, and it was non-graphical software. STAAD-III for Windows Research Engineers, Inc. (REI) worked in two parallel lines to provide STAAD for Windows: They made not-really-Windows application which works under Windows environment. The new software looked like STAADIII for DOS, so all of what you have to do is to switch to Windows and start working, no need for any new experiences.

METHOD OF ANALYSIS:

METHOD OF ANALYSIS One of the most famous analysis methods to analyze continuous beams is “ Moment Distribution Method " Each support will take portion of the load according to its K ; K is the stiffness factor, which equals EI/L . As you can see E , and L is constant per span, the only variable here is I ; moment of inertia. I depends on the cross section of the member. So, if you want to use this analysis method, you have to assume a cross section for the spans of the continuous beam.

PowerPoint Presentation:

Continue… If you want to use this method to analyze a simple frame, it will work, but it will not be simple, and if you want to make the frame a little bit more complicated (simple 3D frame) this method alls short to accomplish the same mission. Hence, a new more sophisticated method emerged, which depends fully on matrices, this method called “Stiffness Matrix Method”, the main formula of this method is: [P] = [K] x [ Δ ] [P] is the force matrix = Dead Load, Live Load, Wind Load, etc [K] is the stiffness factor matrix. = K=EI/L [ Δ ] is the displacement matrix

Types of Structures :

Types of Structures A STRUCTURE can be defined as an assemblage of elements. STAAD is capable of analyzing and designing structures consisting of both frame and Finite elements. Almost any type of structure can be analyzed by STAAD. TRUSS PLANE SPACE FLOOR

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Supports::

Supports: Structural systems transfer their loading through a series of elements to the ground called supports. Generally there are 3 types of supports: Fixed supports. Roller supports. Pinned supports.

Fixed support::

Fixed support: Fixed supports can resist vertical and horizontal forces as well as a moment. Since they restrain both rotation and translation, they are also known as rigid supports.

Roller support::

Roller support: The roller permits rotation about any axis. It also permits translation in any direction parallel to the surface.

Pinned support::

Pinned support: A pinned support can resist both vertical and horizontal forces but not a moment. They will allow the structural member to rotate, but not to translate in any direction.

Loads::

Loads: The loads are broadly classified as: Dead load Live load Impact load Wind load

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Shear force::

Shear force: The Shear Force at the cross section of the beam may be defined as the unbalanced vertical force to the right or left of the section.

Bending moment::

Bending moment: The Bending Moment at the cross section of the beam may be defined as the algebraic sum of the moments of the forces, to the right or left of the section.

Deflection::

Deflection: The deformation of a beam is usually expressed in terms of its deflection from its original unloaded position.

Coordinate Systems:

Coordinate System s

TERMS USED IN STAAD-PRO:

TERMS USED IN STAAD-PRO NODE PLATE BEAM

CONCLUSION:

CONCLUSION

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