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Experimental testing of joints for seismic design of lightweight structures: part 1: screwed joints in straps
Casafont Ribera, Miguel; Arnedo Pena, Alfredo; Roure Fernández, Francisco; Rodríguez Ferran, Antonio
Universitat Politècnica de Catalunya. Departament d'Enginyeria de la Construcció; Universitat Politècnica de Catalunya. Departament de Resistència dels Materials i Estructures en Enginyeria; Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III; Universitat Politècnica de Catalunya. REMM - Grup de Recerca en Estructures i Mecànica de Materials; Universitat Politècnica de Catalunya. TE - Tecnologia d´Estructures; Universitat Politècnica de Catalunya. LACÀN - Centre Específic de Recerca de Mètodes Numèrics en Ciències Aplicades i Enginyeria
Connections in x-braced shear walls play a crucial role in the seismic performance of lightweight structures: they should be strong enough to allow energy dissipation via plastification of the diagonal straps. An extensive experimental research on tensile screwed joints between straps is reported here. Two dominant failure modes are identified: (1) tilting and net section failure (T+NSF) and (2) tilting, bearing and pull out (T+B+PO). The analysis in terms of strength and ductility shows that T+NSF joints are suitable for seismic design, because the straps yield before the connections fail. T+B+PO joints, on the contrary, are not suited because the connection fails before the straps can yield. The influence of various design parameters (strap thickness, number and diameter of screws, steel grade) in the failure mode is studied, and design criteria to induce a T+NSF response are given.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures metàl·liques
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Sismologia
Lightweight construction
Joints (Engineering)
Earthquake resistant design
Failure modes
Net section failure
Bearing
Light gauge steel
Lightweight steel
Seismic design
Joints
Experimental research
Ductility
Estructures lleugeres
Juntures
Construccions antisísmiques
Enginyeria d'estructures -- Sismologia
info:eu-repo/semantics/submittedVersion
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