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现行 ASTM D7498/D7498M-09(2022)
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Standard Test Method for Vertical Strip Drains Using a Large-Scale Consolidation Test 使用大规模固结试验的垂直条形排水管的标准试验方法
发布日期: 2022-05-01
1.1 本试验方法是一种性能试验,用于测量垂直条形排水沟对建筑项目现场可压缩土壤固结时间速率的有效性。 1.1.1 预计设计机构将负责执行该测试。它不是制造商执行的测试。 1.2 本试验方法适用于所有垂直条形排水沟。 1.3 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物;因此,为确保符合本标准,每个系统应独立使用,且两个系统的值不得组合。 1.4 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。 1.5 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====== 5.1 由于这是一项时间密集型测试,因此不应将其视为预制垂直条形排水沟商业装运的验收测试。 5.2 在开发垂直条形排水沟之前,当需要在建筑项目中提高可压缩土壤的固结速率时,大型排水沟- 安装了直径为的排砂管。垂直条形排水沟可以安装在需要提高土壤固结速率的区域,以代替这些大直径砂排水沟。 5.3 该试验方法可用于比较垂直条形排水沟和砂排水沟的性能。
1.1 This test method is a performance test which measures the effectiveness of vertical strip drains on the time rates of consolidation of compressible soils from construction project sites. 1.1.1 It is expected that the design agency will be responsible for performing this test. It is not intended to be a manufacturer-performed test. 1.2 This test method is applicable to all vertical strip drains. 1.3 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. 1.4 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 As this is a time-intensive test, it should not be considered as an acceptance test for commercial shipments of prefabricated vertical strip drains. 5.2 Prior to the development of vertical strip drains, when it was desired to increase the rate of consolidation of a compressible soil on a construction project, large-diameter sand drains were installed. Vertical strip drains can be installed in areas where it is desired to increase the rate of soils consolidation in place of these large-diameter sand drains. 5.3 This test method can be used to compare the performance of vertical strip drains to that of sand drains.
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归口单位: D35.03
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