1.1 该试验方法是一种指数试验，提供了确定单个土工格栅连接点（也称为节点）强度的程序。测试配置为从其与横向于测试方向的一个或多个肋的连接处拉动单个肋，以获得连接处的最大力或强度。该程序允许使用两种不同的夹具，并选择适当的夹具，以最大限度地减少夹紧机构对待测试的特定类型土工格栅的影响。 1.2 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且两个系统的值不得合并。 1. 3. 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。 1.4 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 该指数试验方法用于确定土工格栅产品中单个连接的强度。试验是在隔离状态下进行的，而在使用中，接头通常是封闭的。 因此，该试验方法的结果预计不会与设计性能有关。 5.2 连接强度的值可用于制造质量控制、新产品的开发，或对特定土工格栅连接的隔离行为的一般理解（例如，与运输和铺设土工格栅期间的处理有关）。 5.3 本试验方法适用于具有基本对称的正交或非正交肋、纱线或条带的土工格栅产品，即由通过编织或针织缠绕、焊接、粘合或拉伸形成的肋、纱线和条带组成的土工网格。

1.1 This test method is an index test which provides a procedure for determining the strength of an individual geogrid junction, also called a node. The test is configured such that a single rib is pulled from its junction with a rib(s) transverse to the test direction to obtain the maximum force, or strength of the junction. The procedure allows for the use of two different clamps with the appropriate clamp selected to minimize the influence of the clamping mechanism on the specific type of geogrid to be tested. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 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. 1.4 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 This index test method is to be used to determine the strength of an individual junction in a geogrid product. The test is performed in isolation, while in service the junction is typically confined. Thus the results from this test method are not anticipated to be related to design performance. 5.2 The value of junction strength can be used for manufacturing quality control, development of new products, or a general understanding of the in-isolation behavior of a particular geogrid’s junction (for example, in relation to handling during shipment and placement of the geogrid). 5.3 This test method is applicable to geogrid products with essentially symmetrical orthogonal or non-orthogonal ribs, yarns, or straps, that is, geogrids which are composed of ribs, yarns, or straps that are entangled through weaving or knitting, welded, bonded, or formed through drawing.