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Wind Simulation & Wind Load Generation
With the stand -alone program RWIND Simulation, you can simulate wind flows around simple or complex structures by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
The number of National Annexes to Eurocode 2 for the design of reinforced concrete cross -sections has been extended since DICKQ 6.54. Therefore, the following NAs of EN 1992‑1‑1:2004 + AC:2010 are available.
In CRANEWAY, the action of a rail as ‘statically effective’ or ‘statically ineffective’ is defined under ‘Rail‑Flange Connection’ in the Details dialog box. This setting controls the calculation of the load introduction length according to EN 1993‑6, Tab. 5.1.
In the event of converting or extending a hall, the building owner may want to add a second or third crane to an existing crane runway. Since the original design usually does not consider other cranes, a common solution is to design a minimum distance between the cranes. This is done via the crane technology settings.
General thin -walled cross -sections often have asymmetrical geometries. The principal axes of such cross -sections are then not parallel to the horizontal and vertical axes Y and Z. When determining the cross -section values, the angle α between the centroid axis y and the principal axis u is determined in addition to the principal axis -related moments of inertia.
With the cross‑section program SHAPE‑THIN, you can create any thin‑walled cross‑section and then use it in RFEM or RSTAB as member cross‑section. SHAPE‑THIN can give all relevant cross‑section values of any cross‑section for a design and stress analysis.
In PLATE‑BUCKLING 8, there are two options in the detail settings that can be used to calculate the reduction factors of plate buckling.
For suspension cranes, the bottom chord of the runway girder is subjected to local flange bending due to the wheel loads in addition to the main load bearing capacity. The bottom chord behaves like a slab due to these local bending stresses and has a biaxial stress condition .
At the end of the topic on the design of welds on runway beams now follows - after the technical articles about the rail weld seam in the ultimate limit state and the limit state of fatigue - a technical article about web fillet welds. Both the ultimate limit state and the fatigue limit state are considered.
The stand-alone program SHAPE‑THIN determines characteristic values and stresses of any thin‑walled cross‑sections. Graphic tools and features allow for modelling complex cross‑section shapes. In addition to the graphical input, it is also possible to enter the data in tables. As an alternative, you can import a DXF file and use it as a basis for further modelling. Also, each cross‑section can be entered using the cross‑section library of Dlubal Software and combined as a part with the user-defined elements.
SHAPE-THIN allows you to calculate section properties and stresses of any cross‑sections. If a flange or a web is weakened by bolt holes, you can consider this by using null elements. The stresses are subsequently recalculated with the reduced cross‑section values. In this case, it is necessary to pay special attention to shear stresses. By default, these are set to zero in the area of the null elements. When recalculating shear stresses with the reduced cross‑section values and without further adaptation, it turns out that the integral of the shear stresses is no longer equal to the applied shear force. The following example shows in detail how to calculate the shear stress.
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