1.1 该试验方法为评估木材和木制产品的榫钉承载强度提供了基本程序。承载试验结果用于确定木材和木基产品中连接件的静载荷阻力和变形特性，这些连接件是由插入预钻孔或未钻孔驱动的紧固件传递的载荷引起的。给出了制备预钻孔大于紧固件直径的试样和将紧固件插入小于紧固件直径孔中产生孔的试样的方法。这些方法适用于紧固件，如销钉、螺栓、钉子、钉子、开口销、螺钉、方头螺钉和U形钉。 1.2 该试验方法还为确定横向加载紧固件下方木制品的压缩行为提供了基础，其中产品的厚度和紧固件的直径使得紧固件在试验过程中发生最小弯曲。 1.3 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 紧固件不弯曲的紧固件下方的木材或木基产品的局部压碎行为提供了一种材料特性，该特性用于发生压碎或紧固件弯曲或两者兼有的连接的理论模型中。 这些理论模型用于确定木材和木材基础连接的设计值。当研究紧固件直径、紧固件孔径、含水量、比重和晶粒方向等变量对传力杆承载强度的影响时，试验是合适的。

1.1 This test method provides the basic procedure for evaluating dowel-bearing strength of wood and wood-based products. The bearing test results are used to determine the static load resistance and deformation characteristics of connections in wood and wood-base products resulting from the application of a load transmitted by a fastener inserted into a predrilled hole, or driven without drilling. Methods are given for preparing specimens with predrilled holes larger than the fastener diameter and specimens with holes produced by inserting fasteners in holes smaller than the fastener diameter. The methods apply to fasteners such as dowels, bolts, nails, spikes, drift pins, screws, lag screws, and staples. 1.2 This test method also provides the basis for determining the compression behavior of wood products beneath a laterally loaded fastener where the thickness of the product and the diameter of the fastener are such that minimal bending of the fastener occurs during testing. 1.3 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. 1.4 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. 1.5 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 ====== 5.1 The localized crushing behavior of wood or wood-base products beneath a fastener where the fastener does not bend provides a material property that is used in theoretical models for connections where crushing or fastener bending, or both, occur. These theoretical models are used to establish design values for wood and wood-base connections. The tests are appropriate when studying the effects of such variables as fastener diameter, fastener hole size, moisture content, specific gravity, and grain direction on the dowel-bearing strength.