A Review on Moment-Resisting Connections for Timber Frames

Alexia Brandao Ribeiro; João Negrão; Alfredo Dias

doi:10.3989/ic.7098

Autores/as

Alexia Brandao Ribeiro ISISE - Institute for Sustainability and Innovation in Structural Engineering, University of Coimbra https://orcid.org/0000-0001-8274-4449
João Negrão Civil Engineering Department, University of Coimbra https://orcid.org/0000-0001-6044-2044
Alfredo Dias SISE - Institute for Sustainability and Innovation in Structural Engineering, University of Coimbra https://orcid.org/0000-0002-9752-1907

DOI:

https://doi.org/10.3989/ic.7098

Palabras clave:

ductilidad, conexión poligonal, conexión de palanca, conexión pretensada, resistencia a momentos, rigidez

Resumen

La discontinuidad de las fibras de madera en las intersecciones de las uniones viga-columna plantea retos a la transmisión de momentos entre estos elementos. Algunas soluciones de ingeniería emplean diferentes principios mecánicos para resolver este problema. Por ejemplo, la disposición poligonal de los conectores es una solución ampliamente adoptada; los conectores se insertan perpendicularmente al plano de flexión y actúan a cortante. Otro ejemplo es el mecanismo de palanca, que equilibra el momento mediante un par creado por la tensión de un conector metálico y la compresión contra la madera. Una propuesta innovadora son los nudos de hormigón armado, en los que la continuidad del momento flector se garantiza mediante varillas encoladas ancladas en la viga y el pilar de madera con resina epoxi estructural. Otra solución es la conexión pretensada, en la que el momento de equilibrio se consigue ajustando los esfuerzos de compresión introducidos por el pretensado. El objetivo de este trabajo es presentar, clasificar y comparar estas soluciones en términos de comportamiento estructural.

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