This model is based on thesis 000519.
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Design and Calculation of Three-Span Pedestrian Bridge
| Number of Nodes | 212 |
| Number of Lines | 391 |
| Number of Members | 383 |
| Number of Surfaces | 76 |
| Number of Solids | 0 |
| Number of Load Cases | 3 |
| Number of Load Combinations | 5 |
| Number of Result Combinations | 2 |
| Total Weight | 64,585 t |
| Dimensions (Metric) | 90,000 x 2,001 x 4,000 m |
| Dimensions (Imperial) | 295.28 x 6.56 x 13.12 feet |
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General
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The current state of the development of finite element analysis software and computer technology allows for the calculation of more complex structure. More and more frequently, FE calculations are performed on the entire model. In this context, certain practical construction problems may appear. One of these problems is the consideration of a construction process in the model.
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
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 the combination wizards and the load case classification of road bridges, the standard EN 1991-2:2003 based on the standard EN 1990 is implemented in RFEM and RSTAB.
The calculation of my model results in unrealistically high stresses at many locations. What can be the reason for this?
Is it also possible to enter the temperature for a surface in the XZ plane by using the height (variable in Z)?
In the case of the "Initial strain from other LC/CO" feature, I cannot retrace internal forces. How is this function mapped internally?
Which analysis is used in RF‑STAGES or STAGES to calculate temporary loads and the generated combinations?
How is it possible to enter the values for skin friction and pile end resistance when displaying bored piles for the design of member elastic foundations in the program?
Can I use surface releases to separate two overlapping surfaces?
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