Title: A Probabilistic Explicit Cracking Model for SFRC Structures

Author(s): Pierre Rossi

Publication: Symposium Paper

Volume: 319

Issue:

Appears on pages(s): 9.1-9.16

Keywords: Cracking; Numerical Model; Probabilistic Approach; Serviceability state; Steel Fibre Reinforced Concrete, Structures

DOI: 10.14359/51700858

Date: 6/1/2017

Abstract:
SFRC (Steel Fibre Reinforced Concrete) is increasingly used for structural applications. Existing national and international recommendations are efficient for designing simple statically determinate structures (beams and slabs) loaded in bending. However, they do not possess a sufficient physical base to propose relevant solutions for more complex structures such as statically indeterminate structures. Moreover, the control of cracking in the serviceability limit state is one of the main interests of using SFRC (for durability aspects) compared with using traditional reinforcement bars. Nowadays, existing design recommendations are not able to provide sufficient relevant information regarding cracking in the serviceability limit state. In this way, the best approach for designing structures with respect to both safety and sustainable development is the use of finite element analysis. The present paper is devoted to a probabilistic explicit cracking model developed since 1985. It is used to analyze the cracking behaviour of different SFRC beams submitted to different loading conditions: bending, shear, statically indeterminate situation. It is demonstrated that this numerical model is fully capable to provide precise information about the cracking process related to this types of structural behaviour, especially concerning the cracks opening evolution.