1、Designation:D588207(Reapproved 2013)Standard Test Method forLow Strain Impact Integrity Testing of Deep Foundations1This standard is issued under the fixed designation D5882;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、 last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the procedure for determiningthe integrity of individual vertical or inclined piles by measur-ing
3、and analyzing the velocity(required)and force(optional)response of the pile induced by an(hand held hammer or othersimilar type)impact device usually applied axially and perpen-dicularly to the pile head surface.This test method is applicableto long structural elements that function in a manner simi
4、lar toany deep foundation units(such as driven piles,augeured piles,or drilled shafts),regardless of their method of installationprovided that they are receptive to low strain impact testing.1.2 This standard provides minimum requirements for lowstrain impact testing of piles.Plans,specifications,an
5、d/orprovisions prepared by a qualified engineer,and approved bythe agency requiring the test(s),may provide additional re-quirements and procedures as needed to satisfy the objectivesof a particular test program.1.3 The text of this standard references notes and footnoteswhich provide explanatory ma
6、terial.These notes and footnotes(excluding those in tables and figures)shall not be consideredas requirements of the standard.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 All observed and calculated values shall confor
7、m to theguidelines for significant digits and rounding established inPractice D6026.1.6 The method used to specify how data are collected,calculated,or recorded in this standard is not directly related tothe accuracy to which the data can be applied in design or otheruses,or both.How one applies the
8、 results obtained using thisstandard is beyond its scope.1.7 This standard may involve hazardous materials,operations,and equipment.This standard does not purport toaddress all of the safety concerns,if any,associated with itsuse.It is the responsibility of the user of this standard toestablish appr
9、opriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1he quality of the result produced by this test method isdependent on the competence of the personnel performing it,and thesuitability of the equipment and facilities used.Agencies that me
10、et thecriteria of Practice D3740 are generally considered capable of competentand objective testing/sampling/inspection/etc.Users of this test methodare cautioned that compliance with Practice D3740 does not in itselfassure reliable results.Reliable results depend on many factors;PracticeD3740 provi
11、des a means of evaluating some of those factors.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD
12、6026 Practice for Using Significant Digits in GeotechnicalData3.Terminology3.1 DefinitionsExcept as defined in 3.2,the terminologyused in this test method conforms with Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1 pile integrity,nthe qualitative evaluation of thephysical
13、 dimensions,continuity of a pile,and consistency ofthe pile material.3.2.2 pile impedance,nthe dynamic Youngs modulus ofthe pile material multiplied by the applicable cross sectionalarea of the pile and divided by the strain wave speed.3.2.3 pulse echo method,ntest in which measurements ofthe pile h
14、ead velocity and force(force measurement optional)are evaluated as a function of time.3.2.4 transient response method,ntest in which the ratioof velocity transform to force transform(force measurementrequired)are evaluated as a function of frequency.1This test method is under the jurisdiction ofASTM
15、 Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.11 on Deep Foundations.Current edition approved Nov.1,2013.Published January 2014.Originallyapproved in 1995.Last previous edition approved in 2000 as D5882 07.DOI:10.1520/D5882-07R13.2For referenced ASTM standards,v
16、isit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Significance and Use4.1 Low strain impact integrity testing provides accelerationor velocity and force(optional)data on slender structuralelements(that is,structural columns,driven concr