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GB/T 42600-2023: Wind energy generation systems - Tower and foundation design requirements of wind turbines
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Wind energy generation systems - Tower and foundation design requirements of wind turbines
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GB/T 42600-2023
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Basic data | Standard ID | GB/T 42600-2023 (GB/T42600-2023) | | Description (Translated English) | Wind energy generation systems - Tower and foundation design requirements of wind turbines | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | F11 | | Classification of International Standard | 27.180 | | Word Count Estimation | 102,177 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-05-23 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 42600-2023: Wind energy generation systems - Tower and foundation design requirements of wind turbines
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 27:180
CCSF11
National Standards of People's Republic of China
wind power generation system wind turbine tower and
Basic Design Requirements
Released on 2023-05-23
2023-05-23 implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
table of contents
Preface VII
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 Symbols and abbreviations6
4:1 Symbol 6
4:2 Abbreviations 7
5 Design criteria (including loads) 8
5:1 Overview 8
5:2 Design criteria 8
5:3 Materials 9
5:4 Load 10
5:5 Load data and interface reporting requirements 13
5:6 General structural design requirements 14
5:7 Delivery documents 15
6 steel tower 15
6:1 Overview 15
6:2 Design criteria15
6:3 Materials 15
6:4 Ultimate Strength Analysis of Towers and Openings 17
6:5 Stability 18
6:6 Fatigue limit state 19
6:7 Connection of ring flanges 20
6:8 Friction-type shear bolted connections 23
7 Concrete towers and foundations 25
7:1 Overview 25
7:2 Design criteria 25
7:3 Materials 27
7:4 Durability 27
7:5 Structural analysis 28
7:6 Concrete joints 29
7:7 Limit state of bearing capacity 29
7:8 Fatigue limit state 29
7:9 Limit state of normal use 30
7:10 Construction 31
8 Foundation Design 32
8:1 Overview 32
8:2 Design criteria 32
8:3 Geotechnical data 33
8:4 Construction supervision, monitoring and maintenance 35
8:5 Gravity foundations 35
8:6 Pile foundations 39
8:7 Rock bolt foundations 41
9 Operation, service and maintenance requirements 45
9:1 Operation, maintenance and monitoring 45
9:2 Periodic structural inspection 45
9:3 Foundation ring inspection 45
9:4 Bolt preload maintenance 46
9:5 Structural Health Monitoring 46
APPENDIX A (INFORMATIVE) DESIGN SPECIFICATIONS AND GUIDELINES APPLICABLE FOR COMPUTING BASIS 47
A:1 Overview 47
A:2 References 47
Appendix B (Informative) Summary of Structural Steel Materials 48
B:1 Overview 48
B:2 Structural steel48
Appendix C (Informative) Bolt 49
C:1 Overview 49
C:2 References 49
Appendix D (informative) Z-direction performance of structural steel 51
D:1 Overview 51
D:2 Definition of Z value according to Eurocode 51
D:3 References 51
Appendix E (informative) Simplified buckling analysis method for door frame openings of steel towers 52
Appendix F (Informative) Fatigue Assessment 55
F:1 Overview 55
F:2 Specific details 55
Appendix G (Informative) Verification method for ring flanges 56
G:1 Petersen/Seidel ultimate strength analysis method 56
G:2 Schmidt/Neuper fatigue strength calculation method 59
G:3 References 61
Appendix H (Informative) Crack Control---Guideline 7:9:3 62
H:1 Overview 62
H:2 Crack control based on Eurocode2 62
H:3 Crack control based on Japanese standards 62
H:4 Crack control based on ACI318 62
H:5 Reference 63
Appendix I (Informative) Finite Element Analysis of Concrete 64
I:1 Overview 64
I:2 Element order and type 64
I:3 Constitutive models 64
I:4 Solution method 65
I:5 Implicit Algorithms 65
I:6 Finite element analysis procedure 65
I:7 Inspection results 66
I:8 References 66
Appendix J (Informative) Tower-Foundation Anchorage 67
J:1 Overview 67
J:2 Embedded anchorage 67
J:3 Anchoring 67
J:4 Grouting 67
J:5 Anchor bolts 68
J:6 Embedding base rings 68
J:7 Anchorage load transfer 68
Appendix K (informative) Sections of tension and compression rods 69
K:1 Overview 69
K:2 Examples of rock bolt foundations 70
K:3 References 72
Appendix L (Informative) Selection Guide for Soil Modulus and Foundation Rotational Stiffness 74
L:1 Overview 74
L:2 Soil models 74
L:3 Dynamic rotational stiffness 76
L:4 Static rotational stiffness 77
L:5 References 77
Appendix M (Informative) Rock Bolt Foundation Design 78
M:1 Overview 78
M:2 Corrosion protection 78
M:3 Product Approval 80
M:4 Rock anchor design 80
M:5 Grout Design 80
M:6 Testing and Implementation 80
M:7 Adaptability/performance testing 80
M:8 Acceptance/verification test 80
M:9 Additional extended creep test 81
M:10 Reference 81
Appendix N (Informative) Internal Load---Description of Internal Load 82
Appendix O (Informative) Wind Turbine Tower and Foundation Seismic Load Estimation 83
O:1 Overview 83
O:2 Vertical ground motion 83
O:3 Structural models 83
O:4 Soil swelling 84
O:5 Time Domain Analysis 84
O:6 References 85
Appendix P (Informative) Wind Turbine Tower Structure Damping Ratio 86
P:1 Overview 86
P:2 First Mode Structural Damping Ratio 86
P:3 Damping ratio of second-order modal structures 87
P:4 Higher Mode Structural Damping Ratio 87
P:5 References 87
Appendix Q (Informative) Guidance on Local Factor of Safety of Rock and Soil Limit State 89
Q:1 Overview 89
Q:2 Stability against overturning 89
Q:3 Ultimate bearing capacity 89
Q:4 Sliding resistance 90
Q:5 Overall Stability 90
Q:6 References 90
Reference 91
Figure 1 L-shaped flange example 16
Figure 2 Geometry of the door frame opening 19
Figure 3 Flange clearance k 21 in the cylinder wall area
Fig:4 Relationship between bolt force and cylinder wall axial forceFig:22
Figure 5 SN curve 23 at fatigue level 36*
Fig: 6 Temperature effect of tower section 26
Figure 7 Rock bolt length 45
Figure E:1 Circumferential edge stiffener opening Figure 53
Figure E:2 Ws and ts defined in JSCE 54
Figure G:1 Segmented Simplified Model 56
Figure G:2 Plastic hinge locations for different failure modes 57
Figure G:3 Geometric parameters 57
Figure G:4 Correction coefficient λ corresponding to different α 59
Figure G:5 Non-linear curve of bolt tension and bearing tension of the corresponding flange area 60
Figure K:1 Example of a deep beam designed using the tension-and-tie method 69
Figure K:2 Simple shapes for tension-and-tie model 69
Figure K:3 Three examples of deep beam loading 70
Figure K:4 Tension and compression model of rock bolt foundation 71
Figure K:5 Rock bolt foundation top tie bar reinforcement 72
Figure L:1 Example of soil stress-strain relationship 74
Figure L:2 Loading and unloading characteristics of soil 75
Figure L:3 Variation of shear modulus with soil strain 75
Figure L:4 Rotational stiffness reduction due to load eccentricity 76
Figure L:5 Example of decrease in foundation rotational stiffness due to increase in load eccentricity 77
Figure M:1 Rock and Bolt Section Figure 78
Figure M:2 Typical anchoring device with corrosion protection 79
Figure N:1 Wind Turbine Tower and Foundation Seismic Load Estimation 82
Figure O:1 Response Spectrum Method Structural Model 84
Figure P:1 First-order modal damping ratio of a steel tower 87
Table 1 Flange tolerances 21
Table 2 List of foundation limit states 33
Table B:1 Steel Standards and Types in Different Countries and Regions 48
Table C:1 Comparison of bolt materials in ISO 898-1, JISB1186 and ASTMA490M-12 49
Table E:1 Formula coefficient (E:3) 52
Table H:1 Crack Width Limits Based on Japanese Standards 62
Table P:1 damping coefficient 86
Table Q:1 Minimum partial safety factor for the limit state of anti-overturning stability (European and North American practice) 89
Table Q:2 The minimum partial safety factor (JSCE) for the limit state of anti-overturning stability 89
Table Q:3 Minimum partial safety factors for material and resistance in the limit state of axial capacity, ULS 89
Table Q:4 Minimum partial safety factors for materials and resistance in the limit state of sliding resistance, ULS 90
Table Q:5 — Material and resistance minimum partial safety factors for the limit state of overall stability, ULS 90
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
This document is equivalent to IEC 61400-6:2020 "Wind energy generation system Part 6: Tower and foundation design requirements":
The following minimal editorial changes have been made to this document:
--- In order to coordinate with existing standards, the name of the standard was changed to "Wind Power Generation System Wind Turbine Tower and Foundation Design Requirements":
---Incorporated the content of the COR1:2020 errata, and the outer margins of the terms involved are marked with vertical double lines (‖)
marked:
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by China Machinery Industry Federation:
This document is under the jurisdiction of the National Wind Power Standardization Technical Committee (SAC/TC50):
This document was drafted by: China Shipbuilding Industry Corporation Haizhuang Wind Power Co:, Ltd:, Beijing Jianheng Certification Center Co:, Ltd:, Xinjiang Gold
Wind Technology Co:, Ltd:, Chongqing University, Guangdong Haizhuang Offshore Wind Power Research Center Co:, Ltd:, China Huaneng Group Clean Energy Technology Research Institute
Research Institute Co:, Ltd:, China Three Gorges Group Co:, Ltd:, Three Gorges Group Jiangsu Energy Investment Co:, Ltd:, Chongqing Haizhuang Wind Power Project
Technology Co:, Ltd:, Shanghai Taisheng Wind Energy Equipment Co:, Ltd:, Guangdong Yudean Zhanjiang Wind Power Co:, Ltd:, Shanghai Survey and Design Research
Institute Co:, Ltd:, China Three Gorges New Energy (Group) Co:, Ltd:, Chongqing Jiaotong University, Mingyang Smart Energy Group Co:, Ltd:, CRRC
Wind Power Division of Zhouzhou Electric Locomotive Research Institute Co:, Ltd:, Shanghai Energy Technology Development Co:, Ltd:, Guodian United Power Technology Co:, Ltd:, Zhejiang
Jiang Yunda Wind Power Co:, Ltd:, Shanghai Electric Wind Power Group Co:, Ltd:, China Quality Certification Center, CRRC Shandong Wind Power Co:, Ltd:
Division, China Power Construction Group East China Survey and Design Research Institute Co:, Ltd:, Changjiang Survey, Planning, Design and Research Co:, Ltd:, China Electric Power Science
Research Institute Co:, Ltd:, Datang Renewable Energy Experimental Research Institute Co:, Ltd:, Lanzhou Jiaotong University:
The main drafters of this document: Peng Tang, Zhou Yang, Yang Hongyuan, Cong Ou, Wang Yuhang, Ni Yuanxiang, Deng Mingji, Zhang Xueli, Li Zongguang, Nie Chao, Guo Wenhui,
He Kaihua, Jiang Juan, Wang Zhongping, Tan Jike, Li Xuewang, Lu Xingmei, Yang Rongchang, Zheng Liang, Song Gongjie, Wang Kangshi, Yao Jiagui, Zhang Hao, Jiao Shoulei,
Zhao Shengxiao, Yu Fei, Jia Haikun, Zhang Jiaming, Li Shuaibing:
wind power generation system wind turbine tower and
Basic Design Requirements
1 Scope
This document establishes the structural integrity requirements and basic principles for assessing the support structures of onshore wind turbines, including foundations: fan
The scope includes general or site-specific geotechnical evaluation of the soil, flanges and connection systems to wind turbine nacelle components (including
The strength calculation of bearing connection) shall be designed and recorded according to this document or IEC 61400-1: The scope also includes all possible influences during the whole life cycle
Links that affect structural integrity, such as assembly and maintenance:
The evaluation load data is obtained according to IEC 61400-1 or IEC 61400-2, and takes into account the implied reliability level and local safety of the load
coefficient:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
1: Design requirements)
Note: GB/T 18451:1-2022 Design requirements for wind turbines (IEC 61400-1:2019, IDT)
IEC 61400-2 Wind turbines Part 2: Small wind turbines (Windturbines-Part 2:Smalwind
turbines)
Note: GB/T 17646-2017 Small wind turbines (IEC 61400-2:2013, IDT)
Note: GB/T 5223-2014 Steel wire for prestressed concrete (ISO 6934-2:1991, NEQ)
GB/T 5223:3-2017 Steel bars for prestressed concrete (ISO 6934-3:1991, NEQ)
GB/T 5224-2014 Steel strands for prestressed concrete (ISO 6934-4:1991, NEQ)
GB/T 20065-2016 Threaded reinforcement for prestressed concrete (ISO 6934-5:1991, NEQ)
Note: GB/T 1499:1-2017 Steel for reinforced concrete Part 1: Hot-rolled plain round steel bar (ISO 6935-1:2007, NEQ)
GB/T 1499:2-2018 Steel for reinforced concrete Part 2: Hot-rolled ribbed steel bars (ISO 6935-2:2015, NEQ)
GB/T 1499:3-2010 Steel for reinforced concrete - Part 3: Welded reinforcement mesh (ISO 6935-3:1992, NEQ)
ISO 9016:2012 Destructive tests on welds of metallic materials Impact test specimen position, notch direction and inspection (Destructive
amination)
ISO 12944 (all parts) Corrosion protection of steel structures by paint and varnish protective paint systems (Paintsandvarni-
ISO 22965-1 Concrete Part 1: Guidelines for specifying methods and specification developers (Concrete-Part 1: Methods of
ISO 22965-2 Concrete Part 2: Description of constituent materials, concrete production and consistency of concrete (Concrete-Part
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