Effects of Decay on the Cyclic Properties of Nailed Connections

Kent, Scott; Leichti, Robert J.; Rosowsky, David V.; Morrell, Jeffrey J.

doi:10.1061/(asce)0899-1561(2005)17:5(579)

Cited by 32 publications

(11 citation statements)

References 6 publications

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“…For example, the influence of decay in nailed connections was reported in Kent et al (2005) where the cumulative energy dissipation was the most sensitive property to decay damage. Also the type of failure mode was dependent on the level of decay found.…”

Section: Influence Of Decay In Timber Connectionsmentioning

confidence: 99%

Reliability analysis of a timber truss system subjected to decay

Brites

Neves

Machado

et al. 2013

Engineering Structures

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Assessing the safety of existing timber structures is of paramount importance for taking reliable decisions on repair actions and their extent. The results obtained through semi-probabilistic methods are unrealistic, as the partial safety factors present in codes are calibrated considering the uncertainty exhibited by new structures. In order to overcome these limitations, and also to include the effects of decay in the safety analysis, probabilistic methods, based on Monte-Carlo simulation are applied here to assess the safety of existing timber structures. In particular, the impact of decay on structural safety is analyzed and discussed using a simple structural model, similar to that used for current semi-probabilistic analysis.

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Section: Influence Of Decay In Timber Connectionsmentioning

confidence: 99%

Reliability analysis of a timber truss system subjected to decay

Brites

Neves

Machado

et al. 2013

Engineering Structures

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“…In recent years, the effects of decay have been experimentally investigated not only on wood strength but also on shear performance of nailed joints 4,5 , but little data has been collected on shear performance of timber joints caused by wooddecaying fungi. Shear performance of timber joints frequently dominates the structural performance of wooden structure such that wood decay at timber joints may have a remarkable effect on the structural performance of the construction.…”

Section: Introductionmentioning

confidence: 99%

Effect of decay on shear performance of dowel-type timber joints

Sawata¹,

Sasaki²,

S³

et al. 2008

J Wood Sci

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Monotonic and reversed cyclic loading tests were conducted on dowel-type timber joints with varying degrees of wood decay due to Fomitopsis palustris (Berk. et Curt.), a brown rot fungus, and the effect of decay on various shear performances of dowel-type joints was investigated. For joints affected by the brown rot fungus, initial stiffness, yield load and maximum load of dowel-type joints were significantly decreased, even with a small mass loss of wood and reductions in shear performance were the largest for initial stiffness, followed by yield load and maximum load, in that order. For a 1% reduction of the yield load, initial stiffness and maximum load showed reductions of 1.15% and 0.77%, respectively. When dowel-type joints that had been exposed to the brown rot fungus were subjected to reversed cyclic loading, the gap between the dowel and the lead hole of the wood was increased and equivalent viscous damping was decreased. These results indicate that decay around the dowel lead hole especially affects the load-displacement behavior at small displacement level and dowel-type joints under cyclic loading have very low resistance to forces acting on wooden structure

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“…There have been several researches on the strengths of nailed connections exposed to a wood-decaying fungus. Studies on nailed connections have been conducted with side members composed of oriented strand board [9,10], steel plate [11,12], plywood, and medium density fiberboard [13]. These studies have indicated the decrease in strength of nailed connections caused by the decay.…”

Section: Introductionmentioning

confidence: 99%

Lateral strength of nailed timber connections with decay

Sawata

Sasaki

2018

J Wood Sci

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Loading tests were conducted on nailed connections with decay due to a brown rot fungus. The effect of the decay on the lateral strength of nailed connections was investigated. After loading tests, the sound and decayed regions of a nailed connection were observed in the cross section, which was cut parallel to the grain through the nailed point. The nailed connections with decay showed a low load during initial deformation when the main and side members had a decayed region in the boundary between them. The nailed connections showed low load after yielding when the sound region in the main member decreased. The yield load of nailed connections with decay was calculated based on the yield theory. The model of calculations had sound and decay regions within a member. The yield load of nailed connections obtained by the calculation based on the yield theory agreed with the results obtained by experiments when significant decay in a direction parallel to the grain was observed in the main and side members. This result indicates that the yield theory can estimate the yield load of nailed connections not only with a sound member, but also a member that is partly or wholly decayed.

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Effects of Decay on the Cyclic Properties of Nailed Connections

Cited by 32 publications

References 6 publications

Reliability analysis of a timber truss system subjected to decay

Reliability analysis of a timber truss system subjected to decay

Effect of decay on shear performance of dowel-type timber joints

Lateral strength of nailed timber connections with decay

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