1、Designation: A 761/A 761M 04American Association State Highway and TransportationOfficials StandardAASHTO No. M 167/M 167 MStandard Specification forCorrugated Steel Structural Plate, Zinc-Coated, for Field-Bolted Pipe, Pipe-Arches, and Arches1This standard is issued under the fixed designationA 761
2、/A 761M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or re
3、approval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specification covers corrugated steel structuralplate, zinc-coated, used in the construction of pipe, pipe-arches, arches, underpasses, and special shapes for field assem-bly. Appropriate fast
4、eners and accessory materials are alsodescribed. The pipe, arches, and other shapes are generallyused for drainage purposes, pedestrian and vehicular under-passes, and utility tunnels.1.2 This specification does not include requirements forbedding, backfill, or the relationship between earth cover l
5、oadand plate thickness of the pipe. Experience has shown that thesuccessful performance of this product depends upon theproper selection of plate thickness, type of bedding andbackfill, manufacture in the plant, and care in the installation.The purchaser must correlate the preceding factors and also
6、 thecorrosion and abrasion requirements of the field installationwith the plate thickness. The structural design of corrugatedsteel structural plate pipe and the proper installation proceduresare described in Practices A 796/A 796M and A 807/A 807M.1.3 This specification is applicable to orders in e
7、itherinch-pound units (as A 761) or SI units (as A 761M). Inch-pound units and SI units are not necessarily equivalent. SI unitsare shown in brackets in the text, but they are the applicablevalues when the material is ordered to A 761M.1.4 This specification references notes and footnotes whichprovi
8、de explanatory material. These notes and footnotes (ex-cluding those in tables and figures) shall not be considered asrequirements of this specification.2. Referenced Documents2.1 ASTM Standards:2A 36/A 36M Specification for Carbon Structural SteelA 90/A 90M Test Method for Weight Mass of Coating on
9、Iron and Steel Articles with Zinc or Zinc-Alloy CoatingsA 123/A 123M Specification for Zinc (Hot-Dip Galva-nized) Coatings on Iron and Steel ProductsA 153/A 153M Specification for Zinc Coating (Hot-Dip) onIron and Steel HardwareA 307 Specification for Carbon Steel Bolts and Studs, 60000 psi Tensile
10、StrengthA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 449 Specification for Quenched and Tempered SteelBolts and StudsA 563 Specification for Carbon and Alloy Steel NutsA 563M Specification for Carbon and Alloy Steel NutsMetricA 751 Test Methods, Practices, and Terminol
11、ogy forChemical Analysis of Steel ProductsA 754 Test Method for Coating Thickness by X-ray Fluo-rescenceA 780 Practice for Repair of Damaged Hot-Dip GalvanizedCoatingsA 796/A 796M Practice for Structural Design of Corru-gated Steel Pipe, Pipe-Arches, and Arches for Storm andSanitary Sewers and Other
12、 Buried ApplicationsA 807/A 807M Practice for Installing Corrugated SteelStructural Plate Pipe for Sewers and Other ApplicationsA 902 Terminology Relating to Metallic Coated Steel Prod-uctsB 6 Specification for Zinc (Slab Zinc)B 695 Specification for Coatings of Zinc MechanicallyDeposited on Iron an
13、d SteelE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 376 Practice for Measuring Coating Thickness byMagnetic-Field or Eddy-Current (Electromagnetic) TestMethodsF 568 Specification for Carbon and Alloy Steel ExternallyThreaded Metric Fasteners2.2
14、 ANSI Standards:31This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.17 on Corrugated Steel Pipe Specifications.Current edition approved May 1, 2004. Published May 2004. Originallyapproved i
15、n 1979. Last previous edition approved in 2003 as A 761 03.2For 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 Summary page onthe ASTM website.3A
16、vailable from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.B18.2.1 Square
17、 and Hex Bolts and Screws, Inch SeriesB18.2.2 Square and Hex NutsB18.2.3.6M Bolts, Metric Heavy HexB18.2.4.6M Hex Nuts, Heavy, Metric2.3 AASHTO Standard:4Standard Specifications for Highway Bridges, Division I3. Terminology3.1 DefinitionsSee Terminology A 902 for definitions ofgeneral terminology re
18、lating to metallic-coated steel products.3.2 Definitions of Terms Specific to This Standard:3.2.1 arch, na part circle shape spanning an open invertbetween the footings on which it rests.3.2.2 box culvert, na rectangular box with a long-radiuscrown and short radius corners, and having either a full
19、invertor footings.3.2.3 fabricator, nthe producer of the components for thefinished product.3.2.4 flat plate, nsheet or plate used to fabricate structuralplate.3.2.5 manufacturer, nthe producer of the flat plate andaccessories.3.2.6 pipe, na conduit having full circular shape; also, ina general cont
20、ext, all structure shapes covered by this specifi-cation.3.2.7 pipe-arch, nan arch shape with an approximatesemicircular crown, small-radius, corners, and large-radiusinvert.3.2.8 pipe, horizontal ellipse, nan elliptically shaped pipewith the horizontal diameter approximately 25 % greater thanthe no
21、minal diameter.3.2.9 pipe, vertically elongated, nan elliptically shapedpipe with the vertical diameter up to 10 % greater than thenominal diameter.3.2.10 purchaser, nthe person or agency that purchasesthe finished pipe structure.3.2.11 special shape, na shape, other than describedelsewhere in this
22、section, suitable for fabrication with struc-tural plate.3.2.12 structural plate, na corrugated and curved platewhich is field assembled with other structural plates to form therequired structure.3.2.13 vehicular underpass, na high arch shape with anapproximate semicircular crown, large-radius sides
23、, small-radius corners between sides and invert, and large-radiusinvert.4. Ordering Information4.1 Orders for material under this specification shall includethe following information as necessary to adequately describethe desired product:4.1.1 Name of material (corrugated steel structural plate anda
24、ccessories),4.1.2 Description of structure (see Section 3),4.1.3 Number of structures,4.1.4 ASTM designation and year of issue, asA 761 for inch-pound units or A 761M for SIunits.4.1.5 Dimensions of structure (diameter or span and rise,and length, and so forth) (see 8.2 and Note 7),4.1.6 Thickness o
25、f plate (see 8.1), and for the 6 by 2-in. 150by 50-mm corrugation, the type of steel in accordance with5.1.3 and Table 1,4.1.7 Description of corrugations (see 6.2),4.1.8 End treatment (bevel, skew, grade or slope correc-tions, or other special provision if required by the project plansor specificat
26、ions),4.1.9 Seam bolt size and number per corrugation, if differentthan the minimums specified (see 6.3 and Table 2 and Table 3),4.1.10 Special requirements (including reinforcement loca-tions, shapes, and thicknesses), if required, and4.1.11 Certification, if required (see 12.1).NOTE 1Typical order
27、ing descriptions are as follows: (1) Structuralplates and fasteners for two corrugated steel structural plate pipes, inaccordance with ASTM A 761 , 180-in. diameter, 0.168-in. platethickness, 6 by 2-in. corrugations, each 140-ft nominal centerline lengthwith end treatment as shown on plans; (2) Stru
28、ctural plates and fastenersfor one corrugated steel structural plate pipe-arch, in accordance withASTM A 761M , 3860-mm span by 2460-mm rise, 5.54-mm platethickness, 150 by 50-mm corrugations, 27.0-m nominal centerline lengthwith square ends, longitudinal seams with four M20 bolts per corrugation.5.
29、 Materials5.1 Flat Plate:5.1.1 ManufactureThe base steel shall be made by any ofthe following processes: open-hearth, basic-oxygen, orelectric-furnace.5.1.2 Chemical CompositionThe base metal heat analysisshall conform to the chemical requirements of Table 4. The4Available from American Association
30、of State Highway and TransportationOfficials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001.TABLE 1 Mechanical Requirements for Flat PlateACorrugation Size Yield StrengthB, min, Tensile StrengthB, min, Elongation in 2 in. 50in. mm ksi MPa ksi MPa mm,Cmin, %6 by 2 150 by 50Type 33
31、28.0 190 42.0 290 25Type 38 33.0 225 45.0 310 2515 by 512 380 by 140and 16 by 6 400 by 15040.0 275 55.0 380 25ATo determine conformance with this specification, round each value for tensile strength and for yield strength to the nearest 0.1 ksi 1 MPa and each value for elongationto the nearest 1 %,
32、both in accordance with the rounding method of Practice E 29.BYield strength and tensile strength are based on thickness of the base metal. If tests are made after coating, determine the base metal thickness after stripping thecoating from the ends of the specimen contacting the grips of the tension
33、 testing machine.CElongation requirement does not apply to material tested after corrugating.A 761/A 761M 042requirements of this specification shall be met in continuousmass production during which the manufacturer has madeanalysis of individual heats so as to ensure that material iscontrolled with
34、in the specified limits.5.1.3 Mechanical RequirementsThe mechanical proper-ties of the flat plate material prior to corrugating shall conformto the requirements in Table 1. For the 6 by 2-in. 150 by50-mm corrugation, either Type 33 or Type 38 must bespecified.NOTE 2The properties given in Table 1 fo
35、r the flat plate normallyprovide the minimum yield strength of 33 ksi 230 MPa for Type 33material and 38 ksi 265 MPa for Type 38 material (used in structuraldesign for pipe with 6 by 2-in. 150 by 50-mm corrugations), or 44 ksi300 MPa (used in structural design for pipe with 15 by 512-in. 380 by140-m
36、m and 16 by 6-in. 400 by 150-mm corrugations), after the plateis corrugated.5.2 Bearings for ArchesWhen specified, metal bearingsfor arches shall be cold-formed channels made from flat platematerial conforming to 5.1, and not less than 0.188 in. 4.78mm in specified thickness.5.3 Members for Structur
37、al ReinforcementSteel membersfor circumferential or longitudinal stiffeners, or secondarystructural components, shall be fabricated from rolled shapesconforming to Specification A 36/A 36M, or from flat platematerial conforming to 5.1.NOTE 3When used, steel transverse structural reinforcing membersa
38、re part of long span or box corrugated steel structural plate structures.Members of these types of structures can be designed using PracticeA 796. The structural design of long-span structures is given in AASHTOStandard Specifications for Highway Bridges, Division I, Section 12.6.The structural desi
39、gn of beams is under development by AASHTO.5.4 Assembly FastenersExcept as provided in 5.4.1, boltsand nuts shall conform to the requirements specified in Table 2(Note 4). Bolts shall have sufficient length to provide at least“full nut” engagement when tightened in place. The number ofbolts furnishe
40、d shall be 2 % in excess of the theoretical numberrequired to erect the structure or structures.5.4.1 Bolts and nuts for use with 6 by 2-in. 150 by 50-mmand 16 by 6in. 400 by 150mm corrugations shall have thebearing surface of both bolt and nut shaped to a 1-in. 25-mmradius spherical surface, or sha
41、ll be standard-type bolts andnuts with special washers providing comparable bearing sur-face. Bolts and nuts for use with 15 by 512-in. 380 by140-mm corrugations shall have either standard bearing sur-faces or bearing surfaces shaped to a 1in. 25mm sphericalradius.NOTE 4The purchaser should determin
42、e the appropriate bolt size andnumber of bolts per corrugation for longitudinal seams in accordance withthe design criteria in Practice A 796/A 796M or other appropriate guide-lines. Bolts of larger diameter than specified in Table 2 may be requiredwith thicker plates.5.5 Head Wall and Bearing Ancho
43、rageBolts and nuts forhead wall anchorage and for anchoring arch bearings tofoundations shall be fabricated as shown on the plans and shallconform to the requirements specified in Table 2.6. Fabrication6.1 Structural PlatesStructural plates shall be fabricatedfrom flat sheets or plates, corrugated i
44、n accordance with 6.2,punched for bolted lap seams in accordance with 6.3, andcurved to the required radius.6.2 Corrugations Corrugations shall form smooth con-tinuous curves and tangents. Corrugations shall form annularrings (complete or partial) about the axis of the structure. Thedimensions of th
45、e corrugations shall be in accordance withTable 5 for the size specified in the order.6.3 Bolt Holes (General)The bolt holes shall be punchedso that all plates having like dimensions, curvature, and samesize and number of bolts per foot of seam shall be interchange-able. Except as otherwise specifie
46、d, the location and number ofseam bolt holes shall conform to the requirements of Table 3for the size of bolts indicated in Table 2 (see Note 4). Holesshall be provided as required for connecting headwall anchors,structural reinforcement, and miscellaneous attachments.6.3.1 For 6 by 2in. 150 by 52mm
47、 corrugations, thediameter of the bolt holes in the longitudinal seams shall notexceed the bolt diameter by more than18 in. 3 mm exceptthose in plate corners. Bolt holes in circumferential seams,including plate corners, shall be round holes with the diameternot exceeding the bolt diameter by more th
48、an14 in. 6 mm, orshall be slotted holes with a width equal to the bolt diameterplus18 in. 3 mm and a length equal to the bolt diameter plus38 in. 10 mm.6.3.2 For 15 by 512-in. 380 by 140-mm corrugations, thediameter of the bolt holes in the longitudinal and circumferen-tial seams shall not exceed th
49、e bolt diameter by more than14in. 6 mm. Bolt holes for the attachment of circumferentialreinforcing, where required, shall be slotted with a width notgreater than the bolt diameter plus14 in. 6 mm and a lengthnot greater than the bolt diameter plus12 in. 12 mm.6.3.3 For 16 by 6in. 400 by 150mm corrugations, thediameter of bolt holes in the longitudinal seams shall notexceed the bolt diameter by more than14 in. 6 mm, exceptfor those in the plate corn
