Semester of Graduation
Civil, Construction, and Environmental Engineering
First Major Professor
Master of Science (MS)
Recently, construction costs have been at a global high – paired with increased global demand, rise in cost of material and limited skilled labor – it has become of utmost paramount to determine the solutions in the Civil Engineering industry to accommodate these changes and relieve these costs. Fastening to concrete has been important part of the construction industry for many years. Several standards have adopted a form of determining the strength of concrete breakout such as: ACI 318, ACI 349, or European code “Design of Fastenings in Concrete.” Many of these codes still reference testing and use equations that were developed in the early 1990’s. As technology in construction moves forward, so must the codes we use to design these new structures. Therefore, this study will evaluate whether the code is too conservative and can be expanded upon. Through the use of an FEA program, the effectiveness of shear anchor reinforcement is investigated. The load-bearing capacity is currently limited to three specific conditions: 1) No reinforcement present, 2) Edge reinforcement present, and 3) Edge reinforcement and stirrups spaced at 4in max. There are significant gaps in between these situations. Expanding condition 3) to include larger spacing would greatly benefit designers and laborers. Finite Element Analysis models will be run with 4 in, 6 in, and 8 in spacing between shear reinforcement stirrups. Peak loads will be extracted from each data and analyzed. Based on comparisons with the results, FE and calculations, recommendations are provided on the modification of existing code equations to expand to more conditions.
Buban, James, "The influence of surface reinforcement on concrete failure under shear loading" (2019). Creative Components. 145.