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Standard Test Methods for End Joints in Structural Wood Products 结构木制品端部接头的标准试验方法
发布日期: 2022-02-01
1.1 本标准提供了评估结构木制品中端部接缝的结构能力和完整性的试验方法。 1.2 离线测试方法包括: (1) 轴向张力, (2) 弯曲,以及 (3) 循环分层。 1.3 在线测试方法包括: (1) 耐张载荷和 (2) 抗弯载荷。 1.4 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换,仅供参考,不被视为标准值。 1.5 本标准并非旨在解决与其使用相关的所有安全问题(如有)。 本标准的用户有责任在使用前制定适当的安全、健康和环境实践,并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒(TBT)委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 这些试验方法适用于具有或不具有特定调节方案的试样。 允许在不处于水分平衡的试样上进行试验,例如在工厂的生产条件下,或在试验前已调节至规定含水量或耐久性调节的试样上进行试验。 4.2 这些试验方法可按如下方式使用: 4.2.1 标准化被测材料和接头强度特性的测定。 4.2.2 研究可能影响接头结构能力的参数的影响,例如接头轮廓、粘合剂类型、含水量、温度和强度- 减少组件中的特性。 4.3 这些试验方法并不打算解决端部接头的所有可能暴露或性能预期。以下是未考虑的一些性能特征: 4.3.1 木材粘合剂的长期强度和耐久性。 4.3.2 接头随时间变化的机械性能。 4.3.3 接头的高温性能。
1.1 This standard provides test methods for evaluating the structural capacity and integrity of end joints in structural wood products. 1.2 Off-line test methods include: (1) Axial Tension, (2) Bending, and (3) Cyclic Delamination. 1.3 In-line test methods include: (1) Tension Proofload and (2) Bending Proofload. 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 These test methods are applicable to specimens with or without specific conditioning regimens. Tests are permitted to be performed on specimens that are not at moisture equilibrium, such as under production conditions in a plant, or on specimens that have been conditioned to specified moisture content or durability conditioning prior to testing. 4.2 These test methods can be used as follows: 4.2.1 To standardize the determination of strength properties for the material and joint being tested. 4.2.2 To investigate the effect of parameters that may influence the structural capacity of the joint, such as joint profile, adhesive type, moisture content, temperature, and strength-reducing characteristics in the assembly. 4.3 These test methods do not intend to address all possible exposure or performance expectations of end joints. The following are some performance characteristics not considered: 4.3.1 Long-term strength and permanence of the wood adhesive. 4.3.2 Time dependent mechanical properties of the joint. 4.3.3 Elevated temperature performance of the joint.
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归口单位: D07.01
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