Prediction of Bond Between Steel and Concrete by Numerical Analysis

Abstract

This paper presents the results of subtask dealing with the bond behavior study of the reinforcement systems under monotonic loading pull-out tests. This numerical method is based on the slip and the bond stress distributions through the anchored length of the bar in the concrete block. The work refers, especially to the implementation of reinforcing bars and bond-slip models between steel and concrete in the developed finite element program. For the application of the proposed method, three analytical expressions of bond-slip relationship are selected. The obtained results are presented and commented with the fundamental characteristics of plain concrete and reinforced concrete members. The bond models in contribution with concrete and reinforcing steel provide a relativity good representation of bond-zone system responses.

Analytical Model on the Bond Stress-Slip Relationship between Steel Reinforcement and Concrete for RC Beam-Column Joints

“…In the previous studies, several local bond stress-slip relationships between steel reinforcement and concrete subjected to axial pullout have been proposed and can be generally classified in terms of bond stress distribution. One of them is based on piecewise non-uniform distributions [1,2,[4][5][6][7][8][9][10][11] found in the literature. A common demerit of this type of idealization is that the embedment length has to be divided into many segments, upon which iterative calculations have to be performed to satisfy the steel stress-strain relationship, the local equilibrium between bond force and bar force, and boundary conditions for different segments of embedment lengths.…”

Numerical study on reinforced concrete beam-column frames in progressive collapse

“…Alternatively, some other types of piecewise nonuniform distributions as shown in Fig. 2.8 are found in the literature, such as the multi-linear distribution (Yankelevsky 1985;Ueda et al 1986;Kwak and Filippou 1990;Kwak and Filippou 1997;Khalfallah and Ouchenane 2008)…”