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A platform for research: civil engineering, architecture and urbanism
On the Design Response of a FRC Statically Undetermined Structure
Abstract Fibre reinforced concrete is a concrete with a diffused reinforcement based on fibre pull-out resistance and its toughness in tension is strongly affected by fibre distribution. The material response of a representative volume is significantly affected by the uncertainties related to fibre location and number: only a homogeneous distribution of fibres can guarantee an isotropic behaviour, but in any case its mechanical behaviour dominated by mode I failure, identified by means of a bent notched beam, shows a large standard deviation. By the way, a structure characterized by a significant capability to redistribute stresses and large fracture volume at the onset of collapse can reduce the sensitivity to the high standard deviation and exhibits a bearing capacity aligned to the average mechanical properties of the composite. In the paper several approaches to compute the coefficient that quantifies this structure ability, K Rd , are proposed, taking as a reference cases a slab on ground and an elevated slab.
On the Design Response of a FRC Statically Undetermined Structure
Abstract Fibre reinforced concrete is a concrete with a diffused reinforcement based on fibre pull-out resistance and its toughness in tension is strongly affected by fibre distribution. The material response of a representative volume is significantly affected by the uncertainties related to fibre location and number: only a homogeneous distribution of fibres can guarantee an isotropic behaviour, but in any case its mechanical behaviour dominated by mode I failure, identified by means of a bent notched beam, shows a large standard deviation. By the way, a structure characterized by a significant capability to redistribute stresses and large fracture volume at the onset of collapse can reduce the sensitivity to the high standard deviation and exhibits a bearing capacity aligned to the average mechanical properties of the composite. In the paper several approaches to compute the coefficient that quantifies this structure ability, K Rd , are proposed, taking as a reference cases a slab on ground and an elevated slab.
On the Design Response of a FRC Statically Undetermined Structure
Prisco, Marco (author) / Martinelli, Paolo (author) / Colombo, Matteo (author)
2017-08-06
9 pages
Article/Chapter (Book)
Electronic Resource
English
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