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Compressive membrane action in axially restrained hollow core slabs: Experimental investigation
When a concrete slab is excessively loaded due to an accidental event, compressive membrane action can be activated in order to generate an alternative load transfer to the remaining supports, which can considerably enhance the load-carrying capacity. This can increase the structural reliability of the components, delay or even prevent a progressive collapse and consequently increase the robustness of concrete structures. Although the beneficial effects of compressive membrane action in reinforced concrete slabs have been recognized for decades, only limited research has been focusing on this effect in prestressed concrete members, like hollow core slabs. Therefore, a novel realscale test set-up has been developed in order to assess this phenomenon in real-scale hollow core slabs. The results indicate that, despite the presence of the large hollow cores, compressive membrane action can significantly improve the load-carrying capacity of hollow core slabs under excessive loading. In parallel, a numerical finite element model has been established in order to model the structural behavior (i.e., compressive membrane action) as per the investigated test program. The model was able to correlate the results from the experiments very well, and emphasized the large influence of the concrete tensile strength on the ultimate failure load of concrete hollow core slabs in compressive membrane action.
Compressive membrane action in axially restrained hollow core slabs: Experimental investigation
When a concrete slab is excessively loaded due to an accidental event, compressive membrane action can be activated in order to generate an alternative load transfer to the remaining supports, which can considerably enhance the load-carrying capacity. This can increase the structural reliability of the components, delay or even prevent a progressive collapse and consequently increase the robustness of concrete structures. Although the beneficial effects of compressive membrane action in reinforced concrete slabs have been recognized for decades, only limited research has been focusing on this effect in prestressed concrete members, like hollow core slabs. Therefore, a novel realscale test set-up has been developed in order to assess this phenomenon in real-scale hollow core slabs. The results indicate that, despite the presence of the large hollow cores, compressive membrane action can significantly improve the load-carrying capacity of hollow core slabs under excessive loading. In parallel, a numerical finite element model has been established in order to model the structural behavior (i.e., compressive membrane action) as per the investigated test program. The model was able to correlate the results from the experiments very well, and emphasized the large influence of the concrete tensile strength on the ultimate failure load of concrete hollow core slabs in compressive membrane action.
Compressive membrane action in axially restrained hollow core slabs: Experimental investigation
Thienpont, Thomas (Autor:in) / De Corte, Wouter (Autor:in) / Van Coile, Ruben (Autor:in) / Caspeele, Robby (Autor:in)
01.01.2022
Structural Concrete ; ISSN: 1464-4177 ; ISSN: 1751-7648
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
| BASE | 2023
Structural reliability of hollow core slabs considering compressive membrane action
| BASE | 2022
Structural reliability of hollow core slabs considering compressive membrane action
| BASE | 2023