Publication

Experimental investigation into the shear resistance of a reinforced UHPFRC web element

Eugen Brühwiler
2010
Conference Papers

Résumé

Ultra-high performance fiber reinforced concrete (UHPFRC) can be implemented in combination with steel reinforcing bars to enhance the performance of UHPFRC elements subject to shear stresses. This paper presents an experimental investigation into the behavior of a UHPFRC web element in shear. Two I-shaped beams are constructed out of UHPFRC, with longitudinal reinforcing bars in the tension flange. One of the beams includes transverse bars in the web; the other contains no transverse bars. When loaded to failure in a three-point bending test, the specimen with transverse bars exhibits greater shear strength than the specimen without transverse bars. The observed strengths of both specimens show good agreement with a proposed expression for estimating the shear strength of UHPFRC elements. The proposed expression is based on a truss model for shear resistance, and it treats UHPFRC fibers as reinforcement with a variable angle of inclination, bridging shear cracks at an angle perpendicular to the length of the crack.

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https://infoscience.epfl.ch/entities/publication/bb576710-05d8-444a-a964-58cbb3c1771e

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Eugen Brühwiler
2010
Conference Papers

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/bb576710-05d8-444a-a964-58cbb3c1771e

À propos de ce résultat

Concepts associés (32)

Shear strength (soil)

Shear strength is a term used in soil mechanics to describe the magnitude of the shear stress that a soil can sustain. The shear resistance of soil is a result of friction and interlocking of particles, and possibly cementation or bonding of particle contacts. Due to interlocking, particulate material may expand or contract in volume as it is subject to shear strains. If soil expands its volume, the density of particles will decrease and the strength will decrease; in this case, the peak strength would be followed by a reduction of shear stress.

Essai triaxial

L’essai triaxial est une méthode de laboratoire courante pour mesurer les caractéristiques mécaniques des matériaux granulaires, en particulier celles des sols (par ex. le sable, l’argile), des roches et des poudres. Il existe plusieurs variantes de cet essai, aujourd'hui entièrement normalisé. vignette|L'essai danois. vignette|Enregistrement typique d'un essai triaxial. vignette|Bandes de cisaillement dans une argile verte.

Shear strength

In engineering, shear strength is the strength of a material or component against the type of yield or structural failure when the material or component fails in shear. A shear load is a force that tends to produce a sliding failure on a material along a plane that is parallel to the direction of the force. When a paper is cut with scissors, the paper fails in shear. In structural and mechanical engineering, the shear strength of a component is important for designing the dimensions and materials to be used for the manufacture or construction of the component (e.

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Experimental investigation into the shear resistance of a reinforced UHPFRC web element

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