Current issues of timber construction
2007
Hirai, T.(Hokkaido Univ., Sapporo (Japan))
Current research issues of timber construction are discussed. Initial resistance design, durability design and post life design are considered, in a broad sense, as the components of structural design of timber construction. The following main issues are discussed here for each component. 1. Initial resistance design. 1) Appropriate structural modeling; 2) Relative resistance of structural members and joints; 3) Practical simplification of stiffness calculation for semi-rigid structures ; 4)Reasonable synthesis of horizontal resistance of structural components; 5) Site-work performance factor; 6) Target resistance based on use and risk ; 7) Dynamic behavior of structural components and whole structures; 8) Clear distinction between allowable resistance design and ultimate resistance design. 2. Durability design. 1) Control of wood decay; 2) Structural plan considering risk of decay; 3) Initial design considering maintenance; 4) Estimation of residual resistance. 3. Post life design 1) Reinforcement design considering degradation of members; 2) Initial design considering reuse/recycling.
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