A rectangular canvas made of PVC is tensioned with polypropylene ties and tubular steel poles to form an open tent. In addition to the self-weight, the structure is also subjected to wind loads and prestress forces from the ties.
In the initial geometry, the canvas is modeled as a rectangular planar surface. The ties are prestressed as cables using the Form-Finding add-on. The wind load is applied to the canvas shape determined from the prestress. In the final state of equilibrium, the surface is multiaxially curved and the frame is clearly deformed out of the plane.
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Tensioned Canvas with Tent Poles and Ties
| Number of Nodes | 12 |
| Number of Lines | 13 |
| Number of Members | 9 |
| Number of Surfaces | 1 |
| Number of Solids | 0 |
| Number of Load Cases | 2 |
| Number of Load Combinations | 1 |
| Number of Result Combinations | 0 |
| Total Weight | 0.027 tons |
| Dimensions (Metric) | 8.881 x 3.000 x 6.881 m |
| Dimensions (Imperial) | 29.14 x 9.84 x 22.58 feet |
You can download this structural model to use it for training purposes or for your projects. However, we do not assume any guarantee or liability for the accuracy or completeness of the model.
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General
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For reinforced concrete components and structures whose structural behavior is significantly influenced by the second-order effects, Eurocode 2 provides the general method based on a nonlinear determination of internal forces according to the second-order analysis (5.8.6), as well as an approximation method based on the nominal curvature (5.8.8).
The aim of this technical article is to perform a design according to the general design method of Eurocode 2, using the example of a slender reinforced concrete column.
The aim of this technical article is to perform a design according to the general design method of Eurocode 2, using the example of a slender reinforced concrete column.
This technical article addresses the direct deformation analysis of reinforced concrete beams considering the long-term effects of creep and shrinkage. The direct calculation according to Eurocode 2 (EN 1992-1-1, Section 7.4.3) is explained using a single-span beam. Particular emphasis is placed on tension stiffening, behavior in the cracked state based on the distribution factor (damage parameter), and consideration of shrinkage and creep behavior.
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This article provides a comprehensive overview of essential seismic analysis methods, explaining their principles and applications, as well as the scenarios in which they are most effective
This article provides a step-by-step guide to the design of shear walls in RFEM 6.
The "Nonlinear Material Behavior" add-on includes the Anistropic | Damage material model for concrete structural components. This material model allows you to consider concrete damage for members, surfaces, and solids.
You can define an individual stress-strain diagram via a table, use the parametric input to generate the stress-strain diagram, or use the predefined parameters from the standards. Furthermore, it is possible to consider the tension stiffening effect.
For the reinforcement, both nonlinear material models "Isotropic | Plastic (Members)" and "Isotropic | Nonlinear Elastic (Members)" are available.
It is possible to consider the long-term effects due to creep and shrinkage using the "Static Analysis | Creep & Shrinkage (Linear)" analysis type that has been recently released. Creep is taken into account by stretching the stress-strain diagram of the concrete using the factor (1+phi), and shrinkage is taken into account as the pre-strain of the concrete. More detailed time step analyses are possible using the "Time-Dependent Analysis (TDA)" add-on.
In the Concrete Design add-on, you can determine the required longitudinal reinforcement for the direct crack width analysis (w k).
For the design of reinforced concrete members, there is the option to automatically determine the number or diameter of rebars.
For concrete design, you can display the reinforcement results in tables separately by design situation.
How can I check the determination of the required reinforcement?
I have created a model in which the ceiling slab is lined with ribs. When I assign a Rib member type to the boundary line of the surface and align it to the bottom edge of the surface, the boundary line is automatically pulled towards the center of gravity of the rib, that is, downwards under the slab. Is there a way to change this so that my lines still appear at the edge of the surface?
Is it possible to view the tangential and radial analysis results and reinforcement requirements rather than orthogonal for a circular slab?
How can I perform member design by case for different settings in the design configuration?
Why do I only obtain the total reinforcement in the Results navigator under "Required Reinforcement", and no result for the top and bottom reinforcements separately?
I would like to calculate a prestressed concrete beam. Is this possible in RFEM?
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