Hot-rolled crane beam design considering the effect of code-prescribed load eccentricities

Did you know that you could use Consteel to design a hot-rolled crane beam considering the effect of code-prescribed load eccentricities?

Designing crane beams often involves more than simply applying vertical loads. Code-prescribed eccentricities, arising from rail positioning, wheel load distribution, and horizontal forces, can significantly influence internal forces and stability checks.

In Consteel, you can define three types of overhead traveling crane loads. The Standard option is fully based on EN 1991-3, following the code provisions directly. With Standard load based, you specify the standard-defined wheel loads, and Consteel automatically creates the corresponding load groups for you. The User defined option gives you full control, letting you input the wheel loads individually for each wheel, which is useful if your crane has a non-standard configuration.

Once you select the type of crane load, you set the crane’s geometry, loading, and driving properties according to the chosen method. This includes parameters such as the crane span, trolley distances, number of axes, self-weight of the bridge and trolley, elevated load, number of driven wheels, drive system, friction factor, and guiding device.

For Standard and Standard load based options, Consteel calculates the wheel loads automatically and generates the load groups, while the User defined option lets you input each wheel load manually. The calculated wheel loads can be reviewed for each load case, helping you ensure that the crane beam design reflects the actual forces according to the selected standard or custom configuration.

A key aspect of this method is that the eccentricity of the wheel loads is included directly in the analysis. This means that the internal forces along the beam account for the positioning and distribution of the loads.

By carefully defining the crane geometry, load magnitudes, and driving properties, the resulting bending moments and shear forces correspond closely to the real crane configuration, allowing for a reliable assessment of the hot-rolled crane beam under the prescribed loads.

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