The basic design can be understand easily as long as we understand the fundamental of portal frames. Nowadays, too many design of structure involve in complex design and require complex analysis which necessarily applying the fundamental knowledge where the understanding of the portal frame behavior towards a stable structure is required. The software is designed for engineer professionals to model and analyze both simple and complex structures faster and easier. Currently, the following design standards are supported in both Standalone (Free) and Structural 3D (integrated).
This spreadsheet undertakes the analysis of a user specified portal frame consisting of two vertical columns supporting a beam. The spreadsheet then returns the analysis results in the form of maximum and minimum values for each span and support, and generates charts to illustrate the analysis of the whole portal frame structure.
The Spreadsheet includes the following functions;
- Can model portal frame structures with two vertical supports of any length, and a beam of any length spanning between the two supports. The geometry of the structure is entered by the user entering co-ordinates for all 4 joint locations. The program then sketches the structure to illustrate what is being analysed.
- The column supports can be either pinned or fixed. The beam supports are assumed to be pinned.
- Can model portal frame structures of any material by modifying the Modulus of Elasticity. Different materials can be applied to each of the three members for analysis.
- Can model sections of any shape by modifying the cross sectional area and the Inertia. Each member can be different section and/or Inertia.
- Can model portal frame structures subject to any combination of more than 60 loading conditions, including;
- Dead and Imposed loadings applied directly to the joints
- Up to five different Distributed Loads for each member
- Up to five different Point Loads for each span member
- Up to five different Moments for each span member
- Output –
- The spreadsheet analyses the structure in three loading conditions (all members fully loaded, then imposed loads removed for alternate members).
- Returns values for maximum support reactions
- Returns values for maximum joint displacements
- Returns values for maximum member end forces
- Returns values for maximum and minimum bending moments and gives their precise location for each member. Also returns bending moment values at a user specified point and draws a chart showing the bending moments at all points on the member.
- Returns values for maximum and minimum shear and gives their precise location for each member. Also returns shear values at a user specified point and draws a chart showing the shear at all points on the member.
- Returns values for maximum and minimum deflection and gives their precise location for each member. Also returns deflection values at a user specified point and draws a chart showing the deflection at all points on the member.
- Returns values for maximum and minimum rotation and gives their precise location for each member. Also returns rotation values at a user specified point and draws a chart showing the rotation at all points on the member.
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Portal Frame Design
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