In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.
Frequently Asked Questions (FAQ)
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AnswerFor rolled cross-sections, you can access the extensive [library] of the I-shaped rolled cross-sections,which you can access with the corresponding button (see Figure 1). The following cross-sections can be selected, among others: I-section series (I, IPE, IPEa, IPEo, IPEv, HE-B, HE-A, HE-M, HE-AA, etc.)If there is a Welded cross-section, you can define I-shaped, uniaxially symmetric cross-sections (see Figure 2).Angle and U cross-sections are possible as additional cross-sections. They can be defined as the cross-sectionsSelect the beam in the [Library] or use the button to define the beam (see Figure 3).We already have an interesting webinar about " Design of crane way girders according to Eurocode 3 " on our homepage.
The standard EN 1991-3, Table 2.2., presents load groups 1 to 10. These are equal to the denotation of the classes in our software.
The integration in Categories A to E is a specific classification by Dlubal Software.
- Category A: Ultimate limit state → Table 2.2 of the standard: ULS (1-7)
- Category B: Test load (8)
- Category C: Accidental (9,10)
- Category D: Serviceability limit state (11-13)
- Category E: It was added to the combinatorics on customer request and should be used for the load cases where the support forces from the crane girder design are combined with the related structure.
The article of our Knowledge Base (see Links below) points out that the combinatorics (Classes A to D) should be used for the preliminary design of crane girders. For the supporting structure (brackets, supports, trusses), this combinatorics should not be used.
In your model, the support loads from the crane girder design are only considered in Category E.
According to the current recommendations, the deformation analysis for a cantilevered crane runway girder is performed using the formulas:
In this case, the program cannot distinguish whether the design for the analysed crane runway girders is irrelevant or not. This decision must be made by an engineer.
Usually, a simple note in the structural analysis is sufficient for an examiner. Alternatively, you can consider whether such a girder is even relevant for the design of the entire crane runway girder and, if necessary, neglect it when entering the geometry.
The webinar about 'Design of Craneway Girders According to Eurocode 3' gives you more information about designs with CRANEWAY. You can find it under Links below.
The S-force and the H S -forces must always be entered with the correct sign. The orientation of these forces can be checked graphically in the "1.5 Load combinations" window or by using the [3D Rendering] button and displaying the load block No. 5.
In a webinar , you will find more information about "Design of Crane Girders". You can find it in the links below.
AnswerTo determine the maximum support forces, it is often necessary for the crane to be able to travel beyond the support to be dimensioned. This ensures that z. B. in an asymmetrical load distribution and really every wheel crossing the respective critical point of the carrier.However, if carrier buffers are present to prevent the crane from moving out at the left and / or right end, the distances bL and bR can be specified in the two input fields. This also reduces the number of generated load combinations. An eccentricArrangement of the buffers can be described via the button in a dialog (see Figure 1).There is already an interesting webinar on the topic of " Designing crane runways according to Eurocode 3 ".
In order to set different stiffener spacings, select the "User-defined" option. After clicking in the text box of Column C, the [...] button appears. Click the button to open a dialog box where you can define stiffener items in the selected text box.
NCI to DIN EN 1993-6, Chap. 2.3.1, permits reduction of dynamic coefficients for the value >=1,1. Therefore, you can use the reduces support forces for the design of supporting or hanger structures. As long as the "DIN" National Annex is selected in CRANEWAY and the dynamic coefficients are >=1.1, this reduction is taken into account automatically.
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