Concrete Mechanics. Part B. Numerical Modelling of Bond-Slip Behaviour

摘要

The development and verification of a numerical bond-slip element suitable for plain as well as for deformed (ribbed) reinforcing bars is reported. First, the formula for the axially symmetric case are derived; then the results are generalized to the three-dimensional case. Next, a procedure for effecting the transformation to the case of plane stress is proposed. After the theoretical treatment of the subject, the suitability of the bond-slip element is assessed with reference to experimental results. More particularly, these relate to tests on cylindrical specimens by Dorr and Mehlhorn, tests on rectangular prisms, and tests on specimens representing the end portions of beams. Finally, on the basis of the experience gained in the course of this verification, recommendations are made for the various parameters that govern the behavior of the bond-slip element.