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Seismic assessment of a heavy-timber frame structure with ring-doweled moment-resisting connections

Rodrigues, Leonardo G.; Branco, Jorge M.; Neves, Lu�s C.; Barbosa, Andr� R.

Seismic assessment of a heavy-timber frame structure with ring-doweled moment-resisting connections Thumbnail


Leonardo G. Rodrigues

Jorge M. Branco

Andr� R. Barbosa


The performance of heavy-timber structures in earthquakes depends strongly on the inelastic behavior of the mechanical connections. Nevertheless, the nonlinear behavior of timber structures is only considered in the design phase indirectly through the use of an R-factor or a q-factor, which reduces the seismic elastic response spectrum. To improve the estimation of this, the seismic performance of a three-story building designed with ring-doweled moment resisting connections is analyzed here. Connections and members were designed to fulfill the seismic detailing requirements present in Eurocode 5 and Eurocode 8 for high ductility class structures. The performance of the structure is evaluated through a probabilistic approach, which accounts for uncertainties in mechanical properties of members and connections. Nonlinear static analyses and multi-record incremental dynamic analyses were performed to characterize the q-factor and develop fragility curves for different damage levels. The results indicate that the detailing requirements of Eurocode 5 and Eurocode 8 are sufficient to achieve the required performance, even though they also indicate that these requirements may be optimized to achieve more cost-effective connections and members. From the obtained fragility curves, it was verified that neglecting modeling uncertainties may lead to overestimation of the collapse capacity.

Journal Article Type Article
Acceptance Date Oct 11, 2017
Online Publication Date Oct 23, 2017
Deposit Date Dec 4, 2017
Publicly Available Date Oct 24, 2018
Journal Bulletin of Earthquake Engineering
Print ISSN 1570-761X
Electronic ISSN 1573-1456
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Keywords Fragility functions; Ring-doweled connections; Seismic assessment; Timber moment frames
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