Optimierung gevouteter Rahmen im Stahlhallenbau

Optimization of haunched steel hall frames.

Single-span frame structures are widespread to build storage and industrial buildings of moderate span width. Except three-hinged frames the stress resultants in the principal load direction are statically indeterminate and thus, depend onto the stiffness of all structural members of the frame. For the dimensioning of profiles this nonlinear effect appears and couples furthermore to the design of haunches in the corners of the frame. Using an evolution algorithm to optimize the components of the structure reveals some room to find favor solutions with adequate design weight from a practical point of view. Variants differ in forming the haunches within this scope and boundary conditions become noticeable. Studies discuss the influence of frame spacing, roof slope as well as support conditions onto the optimal design auf haunches.