Ein allgemeines Berechnungsverfahren für Stäbe und seine Anwendung auf Stäbe des Massivbaus (English shop)

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The dissertation “A General Calculation Method for Structural Members and Its Application to Concrete Structures” by Olaf Ehrigsen develops a general numerical approach for analyzing the structural behavior of beam-like members in civil engineering. The research focuses on geometric and material nonlinearities, large deformations, bending, torsion, and cross-sectional warping. The proposed method is based on a system of first-order differential equations describing the relationships between displacements, rotations, internal forces, moments, and strains. By using the undeformed member axis as a reference system, complex structural behavior can be modeled without premature linearization. The study examines different material models, particularly for reinforced concrete, and introduces approaches for stress integration and the numerical solution of initial and boundary value problems. Practical calculation examples demonstrate the applicability of the proposed framework. The results provide a flexible theoretical and computational foundation for nonlinear structural analysis and the assessment of complex beam and frame structures.