In this paper the seismic low-cyclic fatigue strength for different typologies of dissipative timber connections is analysed by means of a novel methodology, which defines an interaction between the strength degradation and the ductility capacity. The results of more than 40 cyclic tests on panel-to-timber, timber-to-timber, steel-to-timber connections and mechanical anchors are reported and discussed, by defining an approximated linear relationship between the slip amplitude and the impairment of strength from the 1st to 3rd cycle. A proposal for considering the strength degradation as an additional condition in the determination of ultimate slip of dissipative connections subjected to low-cyclic load testing is presented. The seismic low-cycle fatigue strength in terms of ductility capacity and strength degradation is compared for all the tested connection. Four different categories of connections in terms of low-cycle fatigue strength are proposed.

A methodology to determine the seismic low-cycle fatigue strength of timber connections / Casagrande, Daniele; Bezzi, Stefano; D'Arenzo, Giuseppe; Schwendner, Sascha; Polastri, Andrea; Seim, Werner; Piazza, Maurizio. - In: CONSTRUCTION AND BUILDING MATERIALS. - ISSN 0950-0618. - 231:(2020). [https://doi.org/10.1016/j.conbuildmat.2019.117026]

A methodology to determine the seismic low-cycle fatigue strength of timber connections

Daniele Casagrande;Stefano Bezzi;Andrea Polastri;Maurizio Piazza
2020

Abstract

In this paper the seismic low-cyclic fatigue strength for different typologies of dissipative timber connections is analysed by means of a novel methodology, which defines an interaction between the strength degradation and the ductility capacity. The results of more than 40 cyclic tests on panel-to-timber, timber-to-timber, steel-to-timber connections and mechanical anchors are reported and discussed, by defining an approximated linear relationship between the slip amplitude and the impairment of strength from the 1st to 3rd cycle. A proposal for considering the strength degradation as an additional condition in the determination of ultimate slip of dissipative connections subjected to low-cyclic load testing is presented. The seismic low-cycle fatigue strength in terms of ductility capacity and strength degradation is compared for all the tested connection. Four different categories of connections in terms of low-cycle fatigue strength are proposed.
Casagrande, Daniele; Bezzi, Stefano; D'Arenzo, Giuseppe; Schwendner, Sascha; Polastri, Andrea; Seim, Werner; Piazza, Maurizio
A methodology to determine the seismic low-cycle fatigue strength of timber connections / Casagrande, Daniele; Bezzi, Stefano; D'Arenzo, Giuseppe; Schwendner, Sascha; Polastri, Andrea; Seim, Werner; Piazza, Maurizio. - In: CONSTRUCTION AND BUILDING MATERIALS. - ISSN 0950-0618. - 231:(2020). [https://doi.org/10.1016/j.conbuildmat.2019.117026]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11572/244796
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