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001602
Dipl.-Ing. (BA) Andreas Niemeier, M.Eng.
2021-03-09
Suspended Membrane Roof
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The suspended membrane roof structure shows an innovative, linearly supported form, which includes the use of cable trusses and arches to optimize load transfer. The structurally well-thought-out membrane structure integrates precise ring-shaped openings to fulfill aesthetic and functional requirements. The visual display highlights the elegant structure and the draping elements of the membrane. The model illustrates modern approaches to roof structures and emphasizes the efficient use of supporting cable elements. All technical details are presented clearly and comprehensibly.

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Suspended Membrane Roof | Linearly Supported Structure

Number of Nodes 191
Number of Lines 240
Number of Members 235
Number of Surfaces 6
Number of Load Cases 2
Total Weight 51,813 t
Dimensions (Metric) 74.455 x 48.499 x 24.624 m
Dimensions (Imperial) 244.27 x 159.12 x 80.79 feet
Program Version 5.26.00

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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Knowledge Base Articles
Load Case Calculation Parameters 
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.
Illustration of a method for performing stability analysis according to DIN EN 1992-1-1 in RFEM 6
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.
Modell eines Stahlbetonbalkens, der durch Kriechen und Schwinden beeinflusst wird
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.
Illustration of equivalent lateral force method for seismic analysis in structural engineering
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
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Product Features
Material model Anisotropic | Damage, nonlinear behavior, concrete and reinforced concrete

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.

Feature 002918 | Determination of Required Longitudinal Reinforcement for Direct Crack Analysis

In the Concrete Design add-on, you can determine the required longitudinal reinforcement for the direct crack width analysis (w k).

Feature 002920 | Automatic Function of Longitudinal Reinforcement for Members

For the design of reinforced concrete members, there is the option to automatically determine the number or diameter of rebars.

Feature 002906 | Load Case Combinatorics According to EN 1991-2:2003 Based on DIN EN 1990 for Road Bridges

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.

Frequently Asked Questions (FAQ)
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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