Uncertainties in Characteristic Strengths of Historic Steels Using Non-Destructive Techniques

Transactions of the VSB-Technical University of Ostrava. Civil Engineering Series

article

Miroslav Sykora,¹  Jan Mlcoch,¹  Pavel Ryjacek² 

[1] Department of Structural Reliability, Klokner Institute, Czech Technical University in Prague;Department of Steel and Timber Structures, Faculty of Civil Engineering, Czech Technical University in Prague

关键词: Historic steel;    characteristic strength;    iron;    measurement error;    non-destructive test;    uncertainty;   

DOI  :  10.35181/tces-2019-0022

来源: Walter de Gruyter GmbH

【 摘 要 】

Numerical approach using the FEM has been used to model the behaviour of the reinforced concrete specimen subjected to the pressure blast wave. The concrete structure is a slab freely supported around the perimeter by a steel plate and a concrete base. A simplified 3D blast model has been used, which involves the pure Lagrangian approach of FEM. The analyses have been conducted using explicit solver. 3 different non-linear material models of concrete have been used to capture the concrete behaviour: CSCM (Continuous surface cap model), Schwer Murray continuous surface cap model, and JHC (Johnson-Holmquist-Cook) material model. Influences of various mesh sizes on the final results (crack patterns, vertical deflection, strain-time dependence) are being monitored, compared with physical experiment data and discussed.

【 授权许可】

Unknown