End-Stop Impact Actions on Runway Structures When an overhead crane reaches the end of its travel, impact forces may develop between the crane and the end stops. These forces are transferred through the buffers and into the runway beams and supporting structure. Buffer forces represent accidental or extreme operational scenarios, but they must be verified […]
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Longitudinal and Transverse Actions on Runway Beams In addition to vertical wheel loads, EN 1991-3 requires consideration of horizontal forces generated during crane movement. These forces arise primarily from: Acceleration and braking of the crane bridge Acceleration and braking of the trolley Friction interaction between wheel and rail They act along and across the runway
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Why Both Must Be Checked in Crane Design In crane-supporting structures, design is governed not only by maximum wheel loads but also by minimum accompanying loads. EN 1991-3 requires evaluation of both values because crane behavior produces uneven and shifting load distribution along the runway beams. Ignoring minimum loads may lead to unsafe or incomplete
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