Shear failures in reinforced concrete members without transverse reinforcement: An analysis of the critical shear crack development on the basis of test results

摘要: Abstract Shear in concrete members without transverse reinforcement can be carried by various potential shear-transfer actions, whose activation depends much on the actual cracking pattern and kinematics at failure. Failures occur a progressive manner (at end of stable propagation critical shear crack) or sudden (by an unstable progression development new crack). In addition, shape failure crack may also very different from case to case. These differences influence which actions governing for given member loading situation. Despite large number specimens tested shear, almost no information during process is yet available. This paper presents results experimental programme consisting thirteen beams. The tests were designed investigate structural systems conditions commonly found practice (cantilevers with concentrated distributed loading, single span beams continuous beams). patterns their associated tracked detail using photogrammetric techniques high frequencies testing particularly failure, providing data leading observations show that they might developed manners. are interpreted reference measured related aim useful material towards rational approaches design.