Naslov
Connection Ductility Demand for Different Ductility Levels in Capacity Design of Multi-Storey CLT Buildings

Autori
Gavrić, Igor ; Šušteršič, Iztpk ; Stepinac, Mislav

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings of the 2020 Society of Wood Science and Technology International Convention / - , 2020, 124-124

Skup
2020 Society of Wood Science and Technology International Convention “Renewable Resources for a Sustainable and Healthy Future”

Mjesto i datum
Portorož, Slovenija, 12.07.2020. - 15.07.2020

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cross-laminated timber ; ductility ; capacity design ; shear walls ; seismic design

Sažetak
Current European building codes Eurocode 8 provide no information on the ductile behaviour and failure mechanisms of cross-laminated timber (CLT) structures. Structural ductility is a key property to ensure good seismic behavior of buildings, as it allows yielding of dissipative zones along the building height which consequently reduces the seismic actions in comparison to a case of a brittle non-dissipative structure where little or no reduction of seismic actions is present. The development of a ductile global failure mechanism must be ensured by identifying the ductile connections in a suitable location within the structure and designing all the remaining connections and structural elements with sufficient overstrength in order to achieve plasticization in the ductile elements. This study investigates the ductility demand for CLT connections in capacity design of multistorey CLT buildings for different ductility levels. To make the capacity design fully applicable for a new structural system, information and understanding of ductile failure mechanisms of this system is necessary along with the values of overstrength factors and a suitable calculation procedure which considers the capacity design principles. Non-linear static (pushover) analyses are performed on CLT walls numerical models, with prior application of capacity design method, calibrated based on experimental data on CLT metal connections (hold-downs, angle brackets) and CLT screwed connections. To ensure sufficient deformation capacity of ductile components, variables that influence CLT walls stiffness, strength and ductility are considered in parametric analyses: wall geometry (aspect ratio), monolithic walls vs. segmented (coupled) walls, position of connections, type and number of connections, vertical load on CLT wall panels. Failure mechanisms are studied together with global ductility levels based on different local ductility levels of dissipative connections.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA