Lateral strength of nailed timber connections with decay
Lateral strength of nailed timber connections with decay
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DOI：
10.1007/s10086-018-1734-8
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发表时间：
2018-06
影响因子：
2.9
通讯作者：
K. Sawata;Yoshihisa Sasaki
中科院分区：
文献类型：
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作者：
K. Sawata;Yoshihisa Sasaki
加载试验进行了钉连接与腐烂，由于褐腐真菌。研究了衰减对钉接节点横向强度的影响。在加载试验后，通过钉钉点平行于晶粒切割的截面上观察到钉钉连接的声区和衰减区。当主构件与侧构件之间的边界处存在衰减区域时，具有衰减的钉接节点在初始变形时表现出较低的荷载。钉接节点屈服后，随着主构件声域的减小而表现出较低的荷载。根据屈服理论，计算了带衰减钉接节点的屈服荷载。计算模型在构件内具有声音和衰变区域。根据屈服理论计算得到的钉接节点屈服荷载与试验结果一致，钉接节点主构件和侧构件均出现平行于晶粒方向的明显衰减。这一结果表明，屈服理论不仅可以估计有完好构件的钉接节点的屈服荷载，而且可以估计部分或全部腐烂的钉接节点的屈服荷载。
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.