GB/T 30024-2020Cranes - Proof of competence of steel structures (English PDF)

1 Scope

Based on the limit state method, this standard specifies the general conditions, requirements, methods and parameters for the proficiency test of crane metal structures:

The value is used in conjunction with the applicable part of the load and load combination in ISO 8686:

This standard is universal and applies to all types of cranes: For special cranes, other standards may specify their capabilities

Specific requirements for verification:

The ability verification is carried out through theoretical verification calculations and/or tests, aiming to use the established strength limits (such as yield limit, fatigue, brittle fracture)

Crack) to avoid the hazards associated with structural performance:

According to ISO 8686-1, proficiency verification calculations can adopt two methods: the limit state method of the partial safety factor and the overall safety factor:

Allowable stress method: Although the validity of the allowable stress method is not excluded, this standard only relates to the limit state method:

This standard does not include proficiency verification calculations for accessory components (such as railings, stairs, walkways, and driver's cabs): But need to consider these accessory parts

The impact of the main structure:

2 Normative references

The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article

Pieces: For undated references, the latest version (including all amendments) applies to this document:

GB/T 6974:1-2008 Crane Terminology Part 1: General Terminology (ISO 4306-1:2007, IDT)

ISO 148-1:2009 Charpy Pendulum Impact Test of Metallic Materials Part 1: Test Method (Metalicmaterials-

Charpypendulumimpacttest-Part 1:Testmethod)

ISO 273:1979 Fasteners-Clearance holes for bolts and screws (Fasteners-Clearance holes for bolts and screws)

ISO 286-2:2010 Product Geometric Technical Specification (GPS) ISO Linear Dimension Tolerance Code Part 2: Standard Tolerance Class

And hole, shaft limit deviation table [Geometricalproductspecifications(GPS)-ISO codesystemfortoleranceson linearsizes-Part 2:Tablesofstandardtoleranceclassesandlimitdeviationsforholesandshafts,cor- rectedbyISO 286-2:2010/Cor1:2013]

ISO 404 Steel and Steel Products General Technical Requirements (Steelandsteelproducts-Generaltechnicaldelivery requirements)

ISO 898-1:2013 Mechanical properties of carbon steel and alloy steel fasteners Part 1: Bolts, screws and bolts with specified performance levels

Stud coarse thread and fine pitch thread (Mechanicalpropertiesoffastenersmadeofcarbonsteelandaloy steel-Part 1: Bolts, screwsandstudswithspecifiedpropertyclasses-Coarsethreadandfinepitch thread)

ISO 4042 Fasteners Electroplated Coatings (Fasteners-Electroplatedcoatings)

ISO 4301-1:2016 Crane Classification Part 1: General (Cranesandliftingappliances-

Classification-Part 1:General)

ISO 5817:2014 Welding of fusion welded joints of steel, nickel, titanium and their alloys (except beam welding) Defect quality level [Welding-

Fusion-weldedjointsinsteel,nickel,titaniumandtheiraloys(beamweldingexcluded)-Qualitylev- elsforimperfections]

ISO 7452:2013 hot-rolled structural steel plate size and shape tolerances (Hot-roledstructuralsteelplates-Tolerances ondimensionsandshape)

GB/T 24818.4 | GB/T 33082 | GB/T 24809.2 | GB/T 30032.2 | GB/T 30026 | […]