Estudio del comportamiento de la varilla ASTM A615 como perno de anclaje en la construcción de estructuras

Abstract

In this research study, the performance of ASTM A615 rod as an anchor bolt in the construction of structures was studied in depth. The requirements for its design and construction were exhaustively detailed, covering crucial aspects such as the materials used and the stresses involved in the connections of metallic structures. The NEC SE EC "Metallic Structures" standard stands as an attempt to harmonize the U.S. standard with the Ecuadorian reality; however, the presence of materials adapted to the market by the local steel industry emphasizes the need to carry out correlational research between the various existing standards. In this research, a qualitative investigation was carried out linking different regulations with the concrete situation of the metallic structures market in Ecuador, taking into account the adaptation of materials by the local steel industry. The experimental design focused on specific parts and anchor bolt reactions, using an approach that involved the use of straight bolts cast in concrete blocks for mechanical and longitudinal tests. The results obtained revealed that ASTM A615 steel exhibits superior tensile strength compared to steels recommended by standards such as AISC 360_16. However, a potential limitation was identified related to its low elongation, which could have a negative impact on its performance under non-uniform loads. In addition, significant challenges were observed in the rebar threading process. Despite the outstanding mechanical properties presented by ASTM A615, it should be noted that the standard does not specifically recommend it for this purpose, highlighting the importance of considering multiple factors when selecting materials for specific structural applications.