Abstract
With steel fiber reinforced concrete (SFRC) it was seen that the sectional force capacity becomes larger than that of plain concrete, because the tensile stress is transmitted through the steel fibers intersecting the crack surface even after cracking has developed. However there are almost no methods to calculate the sectional force capacity, with consideration of the tensile stress transmitted through the steel fibers. Therefore in this paper a method to calculate the sectional force capacity in SFRC is proposed based on fracture mechanics. To apply the method to SFRC tunnel linings the authors conducted test on a ring model and analyzed load-displacement curve of a ring model by nonlinear F.E.M. analysis.
