ASTM D5652-1995(2013) 8750 Standard Test Methods for Bolted Connections in Wood and Wood-Based Products《木和木基制品中螺栓连接件的标准试验方法》.pdf
《ASTM D5652-1995(2013) 8750 Standard Test Methods for Bolted Connections in Wood and Wood-Based Products《木和木基制品中螺栓连接件的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D5652-1995(2013) 8750 Standard Test Methods for Bolted Connections in Wood and Wood-Based Products《木和木基制品中螺栓连接件的标准试验方法》.pdf(4页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D5652 95 (Reapproved 2013)Standard Test Methods forBolted Connections in Wood and Wood-Based Products1This standard is issued under the fixed designation D5652; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、of 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 These test methods cover procedures for evaluating thestrength and stiffness of single-bolted connections in wood o
3、rwood-based products when subjected to static loading. Thesetest methods serve as a basis for determining the effects ofvarious factors on the strength and stiffness of the connection.1.2 The values stated in inch-pound units are to be regardedas the standard. The SI units in parentheses are for inf
4、ormationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.
5、 Referenced Documents2.1 ASTM Standards:2D2395 Test Methods for Specific Gravity of Wood andWood-Based MaterialsD2915 Practice for Sampling and Data-Analysis for Struc-tural Wood and Wood-Based ProductsD4442 Test Methods for Direct Moisture Content Measure-ment of Wood and Wood-Base MaterialsE4 Prac
6、tices for Force Verification of Testing MachinesF606 Test Methods for Determining the Mechanical Proper-ties of Externally and Internally Threaded Fasteners,Washers, Direct Tension Indicators, and Rivets2.2 Federal Specification:3Fed. Spec. FF-W-92 for Washers, Metal, Flat (Plain)3. Summary of Test
7、Methods3.1 Specimens consisting of at least one wood or wood-based member fastened with one bolt to at least one othermember of any material are evaluated for capacity to resistcompressive or tensile forces applied at a constant rate ofdeformation with a suitable testing machine. The deformationof t
8、he connection at various intervals of loading is measured.Supplementary physical properties of the wood or wood-basedmembers are also determined.4. Significance and Use4.1 Connections are one of the weakest links in woodconstruction. While the strength of metal bolts and of wood orwood-based product
9、s are ascertainable, a full evaluation of theperformance of the combination is only possible through thetesting of a complete connection. Such variables as memberthickness, member width, end and edge distances, type of bolt,fabrication tolerances, moisture content of the wood or wood-based product,
10、preservative or fire-retardant treatment of thewood or wood-based product, and species of wood may affectconnection behavior. In order to develop design criteria forestablished bolt types as well as those under development, theeffect of these variables on connection strength and stiffnessmust be kno
11、wn. The tests described herein permit the obser-vation of data on the strength and stiffness of wood orwood-based connections, or both, under the influence of any orall of these factors.5. Apparatus5.1 Testing MachineAny suitable testing machine capableof operation at a constant rate of motion of it
12、s movable headand having an accuracy of 61 % when calibrated in accor-dance with Practices E4.5.2 Spherical Bearing Block, for compressive loading ofspecimens.5.3 GripsGripping devices capable of attaching the speci-men to the stationary and moving heads of the testing machinein such a way as to ens
13、ure true axial tensile loads.5.4 Deformation GagesAt least two dial gages with a leastreading of 0.001 in. (0.025 mm) or other suitable devices formeasuring the slip between connection members during loadapplication.6. Sampling6.1 Sampling shall provide for selection of representativetest specimens
14、that are appropriate to the objectives of thetesting program.1These test methods are under the jurisdiction of ASTM Committee D07 onWood and are the direct responsibility of Subcommittee D07.05 on Wood Assem-blies.Current edition approved April 1, 2013. Published April 2013. Originallyapproved in 19
15、95. Last previous edition approved in 2007 as D5652 95 (2007).DOI: 10.1520/D5652-95R13.2For referenced ASTM standards, visit 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 Summar
16、y page onthe ASTM website.3Available from Superintendent of Documents, U.S. Government PrintingOffice, Washington, DC 20402.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States16.2 Estimate sample size in accordance with the proceduresof M
17、ethod D2915.NOTE 1The precision required, and thus, the manner of sampling andthe number of tests, depend upon the specific test objectives. No specificcriteria can therefore be established. General experience indicates that thecoefficients of variation from tests on connections range from approxi-m
18、ately 15 to 30 %.7. Sampling: Test Specimens and Test Units7.1 Select wood members, and position the bolt in them insuch a way that the results are not affected by knots, crossgrain, or other natural or manufacturing characteristics unlessthe purpose of the test methods is to evaluate the effects of
19、 suchgrowth characteristics. When the affects of growth character-istics are not being evaluated, wood members shall be essen-tially clear and straight-grained. For wood-based products,select specimens with regard to manufactured characteristics.7.2 Connections Containing One Bolt:7.2.1 Make tests o
20、n three-member connections as shown inFigs. 1-3 except where specific data on two- or multiple-member connections are being sought. Select the width, length,and thickness of the members with consideration of requirededge and end distances. Member dimensions shall be represen-tative of the intended u
21、se of the connection.7.2.2 For connections involving metal or other side mem-bers (such as panel materials), the side member thickness shallbe that anticipated in service. For all-wood joints, the thicknessof each side member shall be at least one half of the thicknessof the center member and width
22、and length of all membersshall be selected with consideration of required edge and enddistances for a specific application. Minimum end distanceshall be four bolt diameters for compression loading and sevenbolt diameters for tension loading, unless the effect of variousend distances is to be studied
23、.7.2.3 The excess of bolt-hole diameter over bolt diametershall be132 in. (0.8 mm) for bolts12 in. (13 mm) or less indiameter, and116 in. (1.6 mm) for bolts of larger diameter,unless other bolt-hole diameters are specified.7.2.3.1 Bolt-holes shall be precisely bored perpendicular tothe surface, so t
24、hat the surface of the hole is smooth anduniform to ensure good bearing of the bolt. Holes shall bedrilled after members are conditioned unless the purpose of thetest is to study the effect of shrinkage on the performance ofbolted connections.7.2.4 Bolts shall be of sufficient length to penetrate al
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