FE Modelling and Strength Verification of Thin Carbon Fibre Reinforced Concrete Shells
Themes: Building & Infrastructure
For the mathematical and physical description as well as analysis on a demonstrator formed as dual curvature building with an approximate diameter of 5m has been performed a strength proof acc. typical german guidelines for numeric fibre composite verifications. Thus both proof concept, a detailed model description and documentation of analysis results were available at project run time and far in advance to production of components or building mounting. These documents were discussed with the according authority, the Saxonian State Office for Civil Engineering in Leipzig. First in the concept was to be clarified the necessary depth and scope of proof. This accounts for model strategies, number and kind of load cases, safety concept with safety and reduction factors as well as tests for material and connection probes. Stiffness and strength properties of those filled in further model parameters. In case of composite materials the available test data are typically few and not standardised and thus often a large number of test specimens is to be tested. To make things more complicated in the reviewed case interconnecting parts were mostly not available for thin walled shells. Thus also specimens for those details had to be designed and certainly later tested. All defined sample sizes in turn had to meet measuring statistic minimum requirements.