Bend resistant crane type girder - has initial pressure stressing in pressure chord area subjected to external load

摘要

The flexural stress girder, esp. in crane girder form, is prestressed by elements generating flexural tension in the girder, and pressure tension in the longitudinal direction in a prestressed area. Pressure prestressing is used in the area subjected to pressure under the effect of an external load. It can have an initial curvature opposing the load-imposed bending line (4), being at least partially restored to a straight configuration by its prestressing. This is distinguished by high bend resistance, with insensitivity to oscillation.