标准摘要
[中文适用范围]： 本文件规定了两种实验室试验方法，用于使用剪切箱或环剪装置测定固结排水条件下土壤的有效剪切强度。 本文件适用于岩土工程勘察范围内直剪土有效抗剪强度参数的实验室测定。 本文件中包含的测试适用于原状、重塑、重新压实或重构的土壤。 该程序描述了在单一垂直（法向）应力下测定样本抗剪强度的要求。 通常，从一种土壤中制备三个或更多类似的样本，以便在三种或更多不同的垂直压力下进行剪切，以便根据附录 B 确定抗剪强度参数。 制备和测试样本的特殊程序，例如分阶段加载和预测试- 剪切或土壤与其他材料之间的界面测试不包括在本文件的程序中。 注：本文件满足根据 EN 1997-1 和 EN 1997-2 确定岩土工程调查和测试的直接剪切土壤排水剪切强度的要求。 [外文原描述]： This document specifies two laboratory test methods for the determination of the effective shear strength of soils under consolidated drained conditions using either a shearbox or a ring shear device. This document is applicable to the laboratory determination of effective shear strength parameters for soils in direct shear within the scope of geotechnical investigations. The tests included in this document are for undisturbed, remoulded, re-compacted or reconstituted soils. The procedure describes the requirements of a determination of the shear resistance of a specimen under a single vertical (normal) stress. Generally three or more similar specimens from one soil are prepared for shearing under three or more different vertical pressures to allow the shear strength parameters to be determined in accordance with Annex B. Special procedures for preparation and testing the specimen, such as staged loading and pre-shearing or for interface tests between soils and other materials, are not covered in the procedure of this document. NOTE This document fulfils the requirements of the determination of the drained shear strength of soils in direct shear for geotechnical investigation and testing in accordance with EN 1997-1 and EN 1997-2.
英文名称Geotechnical investigation and testing — Laboratory testing of soil — Part 10: Direct shear tests