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新规范在木结构设计和构造一章中,除强调木结构合理构造处理,加强通风防潮并提高支撑、锚固及防腐、防虫等措施,以保证木结构正常工作和延长结构的使用年限外,主要是针对我国木结构现时发展的实际情况,推荐采用钢木屋架结构型式,其基本考虑有以下几点: (一)木材的天然缺陷对构件受拉性能影响很大,所以屋架受拉下弦一般应选用优
In the chapter of the design and construction of wood structures, the new specifications, in addition to emphasizing the rational structure treatment of wood structures, strengthening ventilation and moisture prevention and improving support, anchorage and anti-corrosion, pest control and other measures to ensure the normal operation of the wood structure and extend the useful life of the structure, the main In view of the actual situation of the current development of wood structures in China, steel-wood truss structure types are recommended. The basic considerations include the following: (1) The natural defects of wood have a great influence on the tensile properties of the components, so the truss should be pulled and chorded. Excellent choice