厚物合板-製材釘接合部の一面せん断性能

概要

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Single shear loading tests of nailed (N75 or CN75) joint with sawn lumber and thick (24, 28 or 35mm) plywood (Lauan, Larch or Radiata Pine) was conducted. Fracture modes are withdrawal of nail from sawn lumber. The ultimate load decreases when the thickness of plywood increases because the length of the nail portion in the sawn lumber decreases. The ultimate load is more than two times the design load of "Standard for Structural Design of Timber Structure" by the Architectural Institute of Japan even when 35 mm thick of plywood is nailed. The lateral nail resistance is almost the same regardless of the fiber direction of the surface veneer of plywood (parallel or perpendicular to the load direction). The minimum requirement for the ratio of the nail length to the thickness of plywood should be discussed when the "Standard for Structural Design of Timber Structure" is revised
一般社団法人日本建築学会の論文
2004-03-20