Dlubal CRANEWAY is a crane runway girder design software which is based on the defined loadings, the program creates load cases that are combined in load positions. Each load position results in three load combinations. Each load combination is calculated with three loading levels in order to determine the internal forces for the general stress design, the deformation analysis, or the fatigue design. The internal forces are determined according to the second-order analysis for warping torsion. With these calculated internal forces, CRANEWAY provides the appropriate analyses according to EN 1993-6, DIN 4132, or DIN 18800.
- Stress analysis of crane runways and welds
- Fatigue design of crane runways and welds
- Deformation analysis
- Plate buckling analysis for wheel load introduction
- Stability analysis for lateral torsional buckling according to the second-order analysis of torsional buckling (1D FEA element)
Geometry, material, cross-section, action and imperfection data is entered in clearly arranged input windows:
- Quick and comfortable data input
- Definition of support conditions based on various support types (hinged, hinged movable, rigid, and user-defined as well as lateral on upper or bottom flange).
- Optional selection of warping restraint
- Variable arrangement of rigid and deformable support stiffeners
- Possibility to insert releases
2. CRANEWAY Cross-Sections
- I-shaped rolled cross-sections (I, IPE, IPEa, IPEo, IPEv, HE-B, HE-A, HE-AA, HL, HE-M, HE, HD, HP, IPB-S, IPB-SB, W, UB, UC, and other cross-sections according to AISC, ARBED, British Steel, Gost, TU, JIS, YB, GB, and others) combinable with section stiffener on the upper flange (angles or channels) as well as rail (SA, SF) or splice with user-defined dimensions.
- Unsymmetrical I-sections (type IU) also combinable with stiffeners on the upper flange as well as with rail or splice.
It is possible to consider actions of up to three simultaneously operated cranes. You can simply select a standard crane from the library or define it manually:
- Number of cranes and crane axles (maximum of 20 axles per crane), center distances, position of crane buffers
- Classification in damage classes with editable dynamic factors according to EN 1993-6, and in lifting classes and exposure categories according to DIN 4132
- Vertical and horizontal wheel loads due to self-weight, lifting capacity, mass forces from drive as well as skewing
- Axial loading in driving direction as well as buffer forces with user-defined eccentricities
- Permanent and variable secondary loads with user-defined eccentricities
- The imperfection load applies in compliance with the first natural vibration mode - either identically for all load combinations to be designed or individually for each load combination as mode shapes may vary depending on the load.
- Comfortable tools available for scaling the mode shapes (rise determination of inclination and precamber).
During the calculation, crane loads are generated in predefined distances as load cases of crane runway. The load increment for cranes moving across the crane runway can be set individually.
The program analyzes all combinations of the respective limit states (ULS, fatigue, deformation, and support forces) for each crane position. In addition, there are comprehensive setting options for specification of the FE calculation such as length of finite elements or break-off criteria.
The internal forces of a crane runway girder are calculated on an imperfect structural model according to the second-order analysis for torsional buckling.
All results are arranged in result windows sorted by different topics. The design values are illustrated in the corresponding cross-section graphic. Design details cover all intermediate values.
- General Stress Analysis
CRANEWAY performs the general stress analysis of a crane girder by calculating the existing stresses and comparing them with the limit normal, shear and equivalent stresses. Welds are also subjected to the general stress analysis with regard to parallel and vertical shear stresses and their superposition.
- Fatigue Design
Fatigue design is performed for up to three cranes operating at the same time, based on the nominal stress concept according to EN 1993-1-9. In the case of the fatigue design according to DIN 4132, a stress curve of crane passages is recorded for each stress point and evaluated according to the Rainflow method.
- Buckling Analysis
Buckling analysis considers the local introduction of wheel loads according to the standard EN 1993-6 or DIN 18800-3.
- Deformation Analysis
Deformation analysis is performed separately for the vertical and horizontal direction by comparing the designed displacements with the allowable values. You can individually specify the allowable deformation ratios in the calculation parameters.
- Lateral-Torsional Buckling Analysis
The torsional-flexural buckling analysis is performed in accordance with the second-order analysis for torsional buckling considering imperfections. The general stress analysis has to be fulfilled with the critical load factor smaller than 1.00. As a result, CRANEWAY displays the corresponding critical load factor for all load combinations of the stress analysis.
- Support Forces
The program determines all support forces on the basis of the characteristic loads including dynamic factors.