GB/T 3811-2008 PDF English
US$145.00 · In stock · Download in 9 secondsGB/T 3811-2008: Design rules for cranes Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB/T 3811: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 3811-2008 | English | 145 |
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Design rules for cranes
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| GB/T 3811-1983 | English | RFQ |
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Design rules for cranes
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GB/T 3811-2008: Design rules for cranes---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3811-2008
J80
National Standard of tbe People's Republic of China
Design Rules for Cranes
Issued by General Administration of Quality Supervision , Inspection and
Quarantine
Standardization Administration of tbe People's Republic of China
Table of Contents
1 Scope ... 1
2 Normative references ... 1
3 Classifications ... 3
3.1 Division of work class ... 3
3.2 Classification of complete crane mMachine ... 4
3.3 Classifications of mechanisms ... 6
3.4 Classification of structural element or mechanism element ... 8
4 Calculated load and load combination in crane design ... _... 11
4. 1 Principles ... 11
4.2 Calculated load and load coefficient... 11
4.3 Basic design method, load case load assembly in the metal structure design of crane .. 3 1
4.4 Load, load case and load assembly in mechanical design of crane ... 38
5 StrLlCtLtres ... 44
5.1 Metal structure members of the crane ... 44
5.2 Principle of structural calculation ... 44
5.3 Material and permissible stress ... 45
5.4 Structural member and joint strength calculation ... 50
5.5 Rigidity calculation of crane and the structural elements ... 56
5.6 Calculation for stability-protection of element ... 58
5. 7 Calculation on flection-resisting of slab piece and she]] ... 65
5.8 Calculation for fatigue strength of the structure ... 72
5. 9 Construction requirement ... 7 6
6 Mecl1anistn ... 80
6.1 Principles for design calculation of the mechanism ... 80
6.2 Design calculation on the universal parts of crane ... 97
6.3 Calculation for selection of specific part of crane ... 1 07
7 Electricity ... 120
7.1 G·eneral provisions ... 120
,.
7.2 Power source and power supplying ... 120
7.3 Power distribution system ... 122
7.4 Electric protection ... 123
7.5 Electric control ... 125
7.6 Work environment for the electronic equipments ... 130
-7. 7 Electromotor selection ... 13 1
7.8 Wires, cables and their laying ... 133
7. 9 Electric load lifting devices ... 136
7.10 Auxiliary electronic equipments ... 138
8 Integrated antidumping stability and wind resistance and antiskid security ... 139
8. 1 The integrated ant id umping stability of cranes ... 140
8.2 Wind resistance and antiskid security of the cranes ... 148
9 Safeties ... 150
9.1 Design calculation of security of the crane ... 150
9.2 Marks, nameplates, safety marks, boundary dimension and clear distance of the cranes
... 15 1
9.3 Safety requirements for structures ... 152
9.4 Safety requirements for machines ... 156
9.5 Safety requirements for electricity ... 160
9.6 The safety and arrangement of control and manipulation ... 160
9. 7 Installation requirements for the safety devices ... 161
9.8 Maintenance documentation of the cranes ... 167
9.9 Effective life of the cranes ... 167
Appendix A (Informative) Classification illustration of cranes ... 168
Appendix B (Informative) Classification illustration of crane Mechanism ... 171
Appendix C (Informative) The classification illustration of the hoisting condition of some cranes
... 1 7 6
Appendix D (Normative) Horizontal lateral load in deflected operation ... 177
Appendix E (Informative) Materials of wind load calculation ... 180
Appendix F (Normative) The application of working stress design and limit state design method
... '... 182
Appendix G (Normative) Load and load combination calculation of metal structure of all kinds
oftypical cranes ... 185
Appendix H (Normative) The value of capacity checking coefficients yn, ym and r pi for load
cotnbination ... 212
Appendix I (Informative) Evaluation on factors influencing the brittle failure and the selection of
quality classes of the steel products ... 213
Appendix J (Normative) Gage length of the compression element and converted slenderness
ratio of the cancelled elements ... 217
Appendix K (Normative) Stability factor of axial compression element ... 224
Appendix L (Normative) Lateral buckling stability factor (integral stability factor) (/Jb of
bend_ing element ... 229
Appendix M (Informative) Global stability calculation of bending element... 233
Appendix N (Normative) Buckling factor of local stability calculation for the lamella ... 236
Appendix 0 (Normative) The stress concentration condition grades and element joint types of
structural joint for structural fatigue strength calculation ... 239
Appendix P (Normative) Initial separation for institutional electromotor like crane ... 251
Appendix Q (Informative) JC, CZ and G values in the calculation for motor capacity selection of
crane mechanis1n ... 257
Appendix R (Normative) Overload verification of electromotor ... 261
Appendix S (Normative) Calorification verification of electromotor ... 264
Appendix T (Normative) Determination of shape factor Ks, size factor Kd, surface condition
factor Ku and corrosion factor Kc ... 271
Appendix U (Informative) Adjustment on current capacity of conductor ... 274
Appendix V (Informative) The overturning wire of the mobile cranes ... 275
Appendix W (Informative) Symbols and codes ... 277
Referet1ces ... 293
..
Foreword
This standard replaces Design Rules for Cranes (GB/T 3811 - 1983).
There have been some changes in this national standard over GB/T 3811 - 1983 in the
following technical aspects.
a) Add "Foreword"; -
b) Revise "Introduction";
c) The crane is classified into overhead type crane, jib type crane and cable type crane,
and in "Scope", the limitation "only being applicable to the electric driven crane".
d) The content of Chapter 2 "General Provisions" in the former GB/T 3 81 1 -1983 is
adjusted to the content in this standard.
--Chapter 3 "Classification", add the provisions in structure or machine element
classification;
--~Chapter 4 "Calculated Load" and "Load Combination"
- -1Chapter 8 "anti-overturning stability and wind resistance skid presentation safety of
complete machine";
--Chapter 9 "Safety".
e) Adjust Chapter 3 "Structure" in GB/T3 811-1983 to Chapter 3 of this standard, and
the content changes are as follow.
- - Add the content of steel frangibility failure assessment;
- -Simplify the integral stability calculation of bending element;
- -Revise the contents related to fatigue strength check computation of structure;
- - Properly adjust and revise the crane rigidity requirement;
--Supplement the requirement on the structure in the structural design.
f) Adjust Chapter 4 "mechanism" of BG/T 3811-1983 to Chapter 6 "Machinery" of
this standard, and the content changes are as follow.
--Supplement the original selection and checking calculation of motor capacity in the
mechanism calculation, and the basic content of the mechanism design and the brief
calculation of mechanism property are introduced;
--Revise the calculation of parts of the machinery.
g) Adjust Chapter 5 "Electrics" in GB/T 3 811-1983 to Chapter 7 of this standard, and
add the contents related to the electric speed cont...
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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