Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 30024-2013 "crane metal structure capability verification", compared with GB/T 30024-2013, the main technical changes are as follows.
Modified the normative references (see Chapter 2, Chapter 2 of the 2013 version).
Modified some of the main symbols used in this standard (see Chapter 3, Table 1, Chapter 3, Table 1 of the 2013 edition); a modification of the plane state stress of the weld link additional verification formula, that is, the coefficient on the right side of the equal sign from 1.1 to 1.0 [see equation (32), equation (32) of the 2013 edition 7.
Added elastic stability verification (see Chapter 7).
This standard uses the translation method equivalent to ISO 203322016 "crane metal structure capability verification" and the normative references in this standard international documents have consistent correspondence with our country's documents are as follows: GB/T 229-2007 Charpy pendulum impact test method for metal materials (ISO 148-1.2006, MOD) - GB/T 1800.2-2020 Product geometric specifications (GPS) linear dimensional tolerances ISO code system part 2: standard tolerance zone code and hole, shaft limit deviation table (ISO 286-2:2010, MOD)-GB/T 3098.1 a 2010 fastener mechanical properties of bolts, screws and studs (ISO898-1:2009, MOD) check fragrance hydrogen embrittlement with preload test parallel Support surface method (idt-GB/T 3098.17-2000 fastener mechanical properties ISO15330:1999)
GB/T 5267.1-2002 fastener plating layer (ISO4042:1999,IDT)
GB/T 15706---2012 General principles of mechanical safety design risk assessment and risk reduction (ISO 12100.2010.IDT)
GB/T 17505-2016 Steel and steel products
Contents of GB/T 30024-2020
Foreword
1 Scope
2 normative reference documents
3 terms, definitions, symbols and abbreviations
4 Overview
5 Static strength verification
6 Fatigue Strength Verification
7 Sexual stability verification
Appendix A (informative appendix) Ultimate design shear for each bolt and each shear face in multiple shear face connections
Appendix B (Informative Appendix) Values divided by
Appendix C (normative appendix) design weld stresses owsd and wsd
Appendix D (normative appendix) slope constant m values and characteristic fatigue strength No. AT
Calculated values of the extreme design stress range Aord and Aord
Appendix E (normative appendix)
Appendix F (informative appendix) Estimation of stress-squared cycles - example
Appendix G (informative appendix) Calculation of joint stiffness under tensile loading
Bibliography
