ASTM D4633-2016 Standard Test Method for Energy Measurement for Dynamic Penetrometers《动态透度计能量测量的标准试验方法》.pdf
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1、Designation: D4633 10D4633 16Standard Test Method forEnergy Measurement for Dynamic Penetrometers1This standard is issued under the fixed designation D4633; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This test method describes procedures for measuring the energy that enters the penetrometer drill rod string during dynamicpe
3、netrometer testing of soil due to the hammer impact.1.2 This test has particular application to the comparative evaluation of N-values obtained from the Standard Penetration Tests(SPT) of soils in an open hole as in Test Method D1586 and Practice D6066. This procedure may also be applicable to other
4、dynamic penetrometer tests.1.3 The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are mathematicalconversions which are provided for information purposes only and are not considered standard. Reporting of test results in unitsother than SI shall n
5、ot be regarded as nonconformance with this test method.1.3.1 The converted inch-pound units use the gravitational system of units. In this system, the pound (lbf) represents a unit offorce (weight), while the unit for mass is slugs. The converted slug unit is not given, unless dynamic (F = ma) calcu
6、lations areinvolved.1.4 LimitationsThis test method applies to penetrometers driven from above the ground surface. It is not intended for use withdown-hole hammers.1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in PracticeD6026.
7、1.5.1 The procedures used to specify how data are collected/recorded or calculated, in this standard are regarded as the industrystandard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do notconsider material variation, purpose
8、for obtaining the data, special purpose studies, or any considerations for the users objectives;and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.It is beyond the scope of this standard to consider significant digits used
9、 in analytical methods for engineering design.1.6 The method used to specify how data are collected, calculated, or recorded in this standard is not directly related to howthe data can be applied in design or other uses, since that is beyond its scope. Practicetext of this standard references notes
10、andfootnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not beconsidered as requirements of the D6066 specifies how these data may be normalized.standard.1.7 This standard does not purport to address all of the safety concerns, if any,
11、 associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil, Rock, and Contained
12、FluidsD1586 Test Method for Penetration Test (SPT) and Split-Barrel Sampling of SoilsD3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used inEngineering Design and ConstructionD6026 Practice for Using Significant Digits in Geotechnical Dat
13、a1 This test method is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.02 on Sampling and RelatedField Testing for Soil Evaluations.Current edition approved Jan. 1, 2010July 1, 2016. Published February 2010July 2016. Originally appro
14、ved in 2005. Last previous edition approved in 20052010 asD4633 05.D4633 10. DOI: 10.1520/D4633-10.10.1520/D4633-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to t
15、he standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes a
16、ccurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Har
17、bor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D6066 Practice for Determining the Normalized Penetration Resistance of Sands for Evaluation of Liquefaction Potential3. Terminology3.1 Definitions:3.1.1 For definitions of common technical terms used in this standard, refer to
18、Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.1.1 acceleration transducer, or accelerometerinstrument attached on, around, or within a continuous column of drill rodsto measure the time-varying acceleration generated in the drill rods by the impact of the hammer.3.2.1 anvilan
19、vil, nthe mass at the top of the drill rods that is struck by the hammer.3.2.2 drill rodsrods, nthe steel rods connecting the hammer system above the ground surface to the sampler below thesurface.3.1.4 force transducera section of drill rod instrumented with strain gages and inserted into the conti
20、nuous column of drillrods to measure the time-varying force generated in the drill rods by the impact of the hammer.3.2.3 hammerhammer, nan impact mass that is raised and dropped to create an impact on the drill rods.3.2.4 impedance (of the drill rod)rod), na property of the drill rod equal to the d
21、rill rod elastic modulus times the crosssectional area divided by the velocity of wave propagation.3.2.5 instrumented subassemblysubassembly, na short section of drill rod instrumented to measure force and accelerationwhich is inserted at the top of the drill rod and below the anvil.3.2.6 penetromet
22、erpenetrometer, nany sampler, cone, blade, or other instrument placed at the bottom of the drill rods.3.2 Symbols:EFV = the energy transmitted to the drill rod from the hammer during the impact event (see 7.10).ETR = (EFV / PE) ratio of the measured energy transferred to the drill rods to the theore
23、tical potential energy.L = length between the location of transducers on the instrumented subassembly and the bottom of the penetrometer.2L/c = the time required for the stress wave (traveling at a known wave speed, c, in steel of 5123 m/s (16 810 ft/s) to travelfrom the measurement location to the
24、bottom of the penetrometer and return to the measurement location.N-value = the number of hammer blows required to advance the sampler the last 0.305 m (1.00 ft) of the 0.457 m (1.5 ft) drivenduring an SPT test.PE = the theoretical potential energy of the hammer positioned at the specified height ab
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