Constitutive Model for Aggregate Interlock in FEM Analyses of Concrete Interfaces with Embedded Steel Bars

International Journal of Concrete Structures and Materials

Carlos Sousa¹  Afonso Serra Neves¹  Diogo Figueira² 

[1] CONSTRUCT-LABEST, Faculty of Engineering (FEUP), University of Porto;Faculty of Engineering & Informatics, University of Bradford;

关键词: aggregate interlock;    finite element analysis;    reinforced concrete;    shear;   

DOI  :  10.1186/s40069-019-0390-8

来源: DOAJ

【 摘 要 】

Abstract A nonlinear finite element model (FEM) is developed to assess the behaviour of a cracked concrete interface, reinforced with embedded steel bars and subjected to monotonic loading. A dowel action finite element modelling approach is conceived for that purpose. The bond between the steel bars and the surrounding concrete is also considered in the model and an interface finite element is included to simulate aggregate interlock. Then, the comparison of the model results with experimental values allowed the calibration of aggregate interlock constitutive relations for cracks in monolithic concrete restrained by embedded steel bars. New constitutive relations are also proposed for shear transfer by aggregate interlock in a concrete joint.

【 授权许可】

Unknown