Analytical model for concrete edge failure of multiple row anchorages with supplementary reinforcement

Abstract

Abstract:In the accompanying paper, the details and results of the experimental campaign carried out on multiple row anchorages, without and with supplementary reinforcement, loaded in shear towards the edge were presented. It was shown that the models given in standards are insufficient to calculate the failure load for anchorages with supplementary reinforcement failing through concrete edge and reinforcement failure. This paper gives the details of a new analytical model developed to evaluate the failure load of anchorages with multiple anchor rows with supplementary reinforcement. The model is developed on the basis of the detailed evaluation of the results of an experimental campaign carried out on anchorages with up to four anchor rows. It has been shown that with the new model, the failure loads for the anchorages with supplementary reinforcement can be evaluated realistically considering different possible failure modes. In order to investigate the number of anchor rows participating to carry the shear loads, the experimental results are augmented through numerical simulations performed using software MASA at University of Stuttgart.

Qualification and design of anchor channels with channel bolts according to the new EN 1992‐4 and ACI 318

“…In contrast, the design concept of concrete anchors, for example, anchor channels with channel bolts, assumes concrete to carry also tensile loads. Recent tests on anchor plates loaded perpendicular to a close edge allowed the development of a model where the tensile capacity of concrete as well as reinforcement is taken into account . This promising approach, however, was not yet transferred to the domain of anchor channels with channel bolts.…”

“…Recent tests on anchor plates loaded perpendicular to a close edge allowed the development of a model where the tensile capacity of concrete as well as reinforcement is taken into account. 21,22 This promising approach, however, was not yet transferred to the domain of anchor channels with channel bolts.…”