BEHAVIOR OF SHEAR ANCHORS IN CONCRETE: STATISTICAL ANALYSIS AND DESIGN RECOMMENDATIONS

摘要

The overall objective of this paper is to evaluate three different procedures for predicting the concrete breakout capacity of shear anchors under static and dynamic loading, and in uncracked and cracked concrete. A data base for shear anchors was developed, evaluated, and placed in the public domain. Observed capacities of shear anchors failing by concrete breakout were compared with the predictions of three methods: the 45-Degree Cone Method; the CC Method, and a variation of the CC Method, obtained by regression analysis. Each predictive method was then evaluated using Monte Carlo analyses to predict the probability of failure by concrete breakout, using the design framework of ACI 349-90.