Abstract

ALVAREZ-PEREZ, José et al. Strapping Spiral Ties for Short Tie-Columns in Confined Masonry Walls Using a Micro-Numerical Model. Ing. Investig. [online]. 2023, vol.43, n.2, pp.1-.  Epub Apr 17, 2024. ISSN 0120-5609.  https://doi.org/10.15446/ing.investig.97253.

Many dwellings in the world are built using confined masonry walls. Confinement is achieved by tie-columns and bond beams of reinforced concrete. These tie-columns are traditionally reinforced by using closed loop ties. In this paper, a new type of ties for tie-columns is presented: strapping spiral ties. These strapping ties are compared against traditional ties by a three-dimensional micro-numerical model and the experimental behavior of short tie-columns. This study resulted in an improvement in the compressive strength, in the degree of confinement of the concrete, and in the efficiency of tie-columns with strapping spiral ties. In addition, an increase in the stiffness at the unloading stage was also obtained.

Keywords : spiral ties; strapping ties; short tie-columns; compressive strength.

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