ABSTRACT
The assumption of constant bond stress distribution gives a simple solution of the stress-transfer problem. However, in reality, the bond stress is dependent on the bond-slip, which varies along the bonded length. Thus, for more rigorous formulation of the stress-transfer approach, the dependency of bond stress on the slip should be included. Somayaji and Shah (1981) proposed an exponential bond stress distribution function and developed an analytical procedure for prediction of deformation and progressive cracking of RC tension specimens. Shima et al. (1987) suggested a logarithmic-exponential bond stress-slip function which takes into account the strain in reinforcement. With adaptation of results from experimental studies (Eligehausen et al., 1983), a nonlinear bond stress-slip relation was recommended in CEB-FIP Model Code 1990.
