木结构

[中文适用范围]： 本文件给出了针对一定数量的结构木材产品（例如实木、LVL、OSB、胶合板、刨花板、工字钢）在环境温度下在弯曲作用下的荷载持续时间和蠕变系数的确定方法，这些产品是通过测试值计算得出的。它提出了以下方法：a）确定新木材产品的荷载持续时间和蠕变系数，c）一种可选方法，用于确定荷载持续时间和蠕变系数对环境条件变化的敏感性。b）确定先前定义的一组荷载持续时间和蠕变系数是否可以应用于已测试产品，以及注 1 本文件旨在适用于在设计中使用荷载持续时间系数或蠕变系数的木质产品。注 2 使用这些方法得出的用于木材产品的荷载持续时间和蠕变系数，可能需要额外考虑高温对荷载持续时间系数和蠕变系数的影响。 [外文原描述]： This document gives methods of determination of duration of load and creep factors under bending actions at ambient temperatures for a defined population of structural timber products such as solid timber, LVL, OSB, plywood, particleboard, I-beams calculated from test values. It presents methods for a) determining the duration of load and creep factors for new timber products, b) establishing whether a previously defined set of duration of load and creep factors can be applied to a tested product, and c) an optional method for establishment of sensitivity of duration of load and creep factors to changes in environmental conditions. NOTE 1 This document is intended to apply to wood-based products for which a duration of load factor or a creep factor is used in design. NOTE 2 The effect of elevated temperature on the duration of load factor and creep factor that is derived using these methods for use with timber products can need additional consideration.