Steel Fiber-Reinforced Concrete Panels in Shear: Analysis and Modeling

作者：Susetyo Jimmy^*; Gauvreau Paul; Vecchio Frank J

来源：ACI Structural Journal, 2013, 110(2): 285-295.

• compression softening
• crack slip
• crack spacing
• finite elements
• panel tests
• steel fiber
• tension softening
• tension stiffening

Finite element (FE) studies are undertaken to investigate the accuracy of currently available concrete constitutive models in predicting the behavior of steel fiber-reinforced concrete (SFRC) panels tested in pure shear: The tension-stiffening, tension-softening, and compression-softening behaviors of the panels are evaluated and compared with predictions made using the Disturbed Stress Field Model (DSFM) and currently available concrete constitutive models. In addition, the effects of crack slip and crack spacing parameters on the modeling accuracy are assessed.
The FE analysis results indicate that although current constitutive models are able to simulate the behavior of conventionally reinforced concrete panels accurately, the models overestimate the strength and deformation capacity of SFRC elements. Three factors are found to significantly influence the calculation accuracy: the tension stiffening/softening model, the consideration of shear slip on crack surfaces, and the crack spacing parameters.

• 出版日期2013-4