Numerical Investigation of the in-Plane Seismic Performance of Timber Log-Haus Walls With Reinforced Dovetails

Bedon, Chiara; Fragiacomo, Massimo

doi:10.7712/120117.5506.16995

Cited by 1 publication

(4 citation statements)

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“…e static friction coefficient was assumed for the (a) to (d) contact typologies listed above, which is equal to 0.5, 0.2, 0.6, and 0.9, respectively [7]. In the case of the (a) type interaction, in particular, the reference average value was derived from earlier experimental measurements reported in [16] for static friction tests carried out on small-scale log-haus specimens.…”

Section: 3mentioning

confidence: 99%

“…Based on earlier research works (see, e.g., [7,16]), a key role was assigned to contact interactions between specimen components. Surface-to-surface interactions were in fact implemented at the timber-to-timber and timber-to-steel interfaces.…”

Section: 3mentioning

confidence: 99%

“…Full solid models were taken into account, based also on some past FE experiences and validations for the same structural typology (see, e.g., [7,11,16]). Following the experimental features summarized in Section 2, two di erent FE models were developed, being representative of the S01 (M01 model) and S02 (M02 model) specimens, respectively.…”

Section: General Modelling Approach and Assemblymentioning

confidence: 99%

“…As a result, in the last years, some research studies have been carried out to assess and further explore the seismic performance of log-haus systems, both at a component level and at a full-scale and assembly level (see, e.g., [3][4][5][6][7]). Further research investigation has been dedicated over the past decades-due to the intrinsic features of log-haus systems-to their buckling performance under ordinary loads (see [8][9][10][11]).…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of Timber Log‐Haus Walls with Steel Dovetail Reinforcements under In‐Plane Seismic Loads

Bedon

Fragiacomo

2018

Advances in Civil Engineering

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e paper investigates the structural response and vulnerability of timber log-haus walls under in-plane seismic loads. Careful consideration is given, in particular, to the structural efficiency of additional metal fasteners introduced within the thickness of traditional timber log-walls. Log-haus systems are in fact typically obtained by stacking multiple logs and generally used for residential or commercial buildings up to two levels. eir seismic characterization, however, still requires further investigations and studies, since current standards for timber structures (i.e., Eurocode 5 and Eurocode 8) do not provide specific recommendations for their seismic design. In this regard, the so-called "steel dovetail profiles" investigated in this paper are aimed to improve the in-plane stiffness and ultimate resistance of traditional log-walls. In particular, taking advantage of past experiments carried out on small-scale joint specimens, as well as past 3D numerical efforts for the same structural typology (unreinforced assemblies), full 3D solid models are described in ABAQUS to assess the potential of steel dovetail profiles, as well as to capture possible issues. Numerical simulations are proposed both for small-scale specimens and full log-haus assemblies, being representative of the actual loading and boundary conditions for log-haus walls as part of a real building. As such, the effects of key input parameters and main influencing aspects are emphasized. In conclusion, it is shown that the examined reinforcing technique can offer rather stable initial stiffness and ultimate resistance increase, compared to unreinforced assemblies. At the same time, several aspects should be taken into account to properly optimize their benefits.

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Section: 3mentioning

confidence: 99%

Section: 3mentioning

confidence: 99%