Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Punching Verification of Edge Columns Assisted by Numerical Simulation and Field Testing
The application of Swiss codes for existing structures (SIA 269/2) to the assessment of a 50-year-old 40 cm thick reinforced concrete slab under gravity loads resulted in insufficient punching capacity in the edge column regions. As a result, detailed nonlinear finite element analyses were undertaken on an isolated edge column using three-dimensional solid finite elements and high-fidelity constitutive models for cracked concrete. Results indicated that the critical mode of failure was flexural yielding and not punching. Sensitivity studies indicated that punching could potentially take place if the bottom tension reinforcement ratio at mid-span was higher. For further verification of the numerical model and structural safety of the slab, in-situ load testing was performed with the aid of flexible water tanks placed around the edge column targeting a uniform load of 5 kN/m2. Based on detailed nonlinear finite element simulations combined with in-situ load testing with deflection and crack pattern control, it was possible to satisfy serviceability and ultimate limit states of the slab and omit lengthy and costly structural retrofitting measures.
Punching Verification of Edge Columns Assisted by Numerical Simulation and Field Testing
The application of Swiss codes for existing structures (SIA 269/2) to the assessment of a 50-year-old 40 cm thick reinforced concrete slab under gravity loads resulted in insufficient punching capacity in the edge column regions. As a result, detailed nonlinear finite element analyses were undertaken on an isolated edge column using three-dimensional solid finite elements and high-fidelity constitutive models for cracked concrete. Results indicated that the critical mode of failure was flexural yielding and not punching. Sensitivity studies indicated that punching could potentially take place if the bottom tension reinforcement ratio at mid-span was higher. For further verification of the numerical model and structural safety of the slab, in-situ load testing was performed with the aid of flexible water tanks placed around the edge column targeting a uniform load of 5 kN/m2. Based on detailed nonlinear finite element simulations combined with in-situ load testing with deflection and crack pattern control, it was possible to satisfy serviceability and ultimate limit states of the slab and omit lengthy and costly structural retrofitting measures.
Punching Verification of Edge Columns Assisted by Numerical Simulation and Field Testing
Lecture Notes in Civil Engineering
Ilki, Alper (Herausgeber:in) / Çavunt, Derya (Herausgeber:in) / Çavunt, Yavuz Selim (Herausgeber:in) / Kagermanov, Alexander (Autor:in) / Pernstich, Julian (Autor:in)
International Symposium of the International Federation for Structural Concrete ; 2023 ; Istanbul, Türkiye
03.06.2023
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Punching Shear on Steel Edge Columns
| British Library Conference Proceedings | 2011
Punching shear at inner, edge and corner columns
| UB Braunschweig | 1976
Influence of continuity on punching resistance at edge columns
| Online Contents | 2016
Punching failure mechanism at edge columns of post-tensioned lift slabs
| Online Contents | 2008
Punching failure mechanism at edge columns of post-tensioned lift slabs
| Online Contents | 2008