Diseño de conexiones mecánicas tipo canal en vigas compuestas bajo fuego//Design of channel mechanical connections in composite beam in

Authors

  • Yisel Larrua‐Pardo Universidad de Camagüey. Facultad de Construcciones. Camagüey
  • Rafael Larrua-Quevedo Universidad de Camagüey. Facultad de Construcciones. Camagüey
  • Valdir Pignatta Silva Universidad de São Paulo, Departamento de Estructuras e Geotécnica. São Paulo

Abstract

En este trabajo se propusieron dos métodos, uno simplificado y otro gráfico alternativo para el diseño de la conexión mecánica tipo canal en vigas compuestas de hormigón y acero en situación de incendio, a partir del estudio de su comportamiento. Se utilizó como herramienta la modelación numérica. El método simplificado desarrollado considera temperaturas definidas a través de la modelación térmica del ensayo push-out en situación de incendio y es coherente con las expresiones de diseño de las conexiones mecánicas tipo canal a temperatura ambiente y la formulación existente para el diseño de las conexiones tipo perno a elevadas temperaturas. El método gráfico alternativo
propuesto constituye una opción que permite obtener de una forma directa y rápida, la resistencia a elevadas temperaturas de la conexión mecánica tipo canal para un tiempo de resistencia al fuego, en función de su resistencia a temperatura ambiente.

Palabras claves: conexión mecánica tipo canal, método simplificado, método gráfico alternativo, modelación numérica, incendio.
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Abstract

In this paper two methods to design of channel mechanical connection are proposed, a simplified one and graphical alternative another, both using the numerical analysis for the study of the mechanical connection behavior. The developed simplified method considers temperatures defined through the
thermal modelling of the push-out test in fire and it is coherent with the design expressions of the channel mechanical connections to ambient temperature, and the current formulation for the design of the stud connections al elevated temperatures. The proposed alternative graphical method constitutes an option that allows obtaining, in a direct and quick way, the resistance to elevated
temperatures of the channel mechanical connections for a determined time of resistance to the fire, according to its resistance to ambient temperature.

Key words: channel mechanical connection, simplified method, alternative graphical method, numerical model, fire.

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How to Cite

1.
Larrua‐Pardo Y, Larrua-Quevedo R, Pignatta Silva V. Diseño de conexiones mecánicas tipo canal en vigas compuestas bajo fuego//Design of channel mechanical connections in composite beam in. Ing. Mec. [Internet]. 2015 Jan. 1 [cited 2025 Nov. 4];18(1):52-61. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/508

Issue

Vol. 18 No. 1 (2015): enero-abril

Section

Original article

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