JGJ227-2011 PDF English
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Technical specification for low-rise cold-formed thin-walled steel buildings
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JGJ227-2011: Technical specification for low-rise cold-formed thin-walled steel buildings---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/JGJ227-2011
JGJ
INDUSTRIAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
UDC
Registration number J 1162-2011
Technical specification for low-rise cold-formed
thin-walled steel buildings
Issued on: JANUARY 28, 2011
Implemented on: DECEMBER 01, 2011
Issued by. Ministry of Housing and Urban-Rural Development of the
People's Republic of China
INDUSTRIAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Technical specification for low-rise
cold-formed thin-walled steel buildings
Approved by. Ministry of Housing and Urban-Rural Development of
the People's Republic of China
Date of implementation. December 01, 2011
China Building Industry Press
2011 Beijing
Announcement of Ministry of Housing and
Urban-Rural Development of the People's Republic of China
No.903
Announcement on the release of industry standard
“Technical specification for low-rise cold-formed thin-walled
steel buildings”
The “Technical specification for low-rise cold-formed thin-walled steel
buildings” is hereby approved as an industry standard, numbered as JGJ
227-2011, AND implemented from December 01, 2011. In this standard,
Clause 3.2.1, 4.5.3 and 12.0.2 are mandatory, which must be strictly enforced.
This specification is released by China Building Industry Press under the
organization of the Standard Quota Institute of the Ministry of Housing and
Urban-Rural Development of the People's Republic of China.
Ministry of Housing and Urban-Rural Development of the People's
Republic of China
January 28, 2011
Foreword
In accordance with the requirements of the original Ministry of Construction of
the Notice on the Printing and Issuing of the Establishment and Revision Plan
of 2007 Engineering Building Standards (Batch 1) (JB [2007] No.125), the
specification compilation group compiles this specification through extensive
investigation and study, carefully summarizing practical experiences, making
reference with relevant international standards and advanced foreign
standards, AND based on the wide solicitation of opinions.
The provisions indicated in boldface in this specification are mandatory, which
must be strictly enforced.
As for this specification, the Ministry of Housing and Urban-Rural Development
of the People's Republic of China is responsible for the management and the
interpretation of the mandatory provisions, AND the China Building Standards
Design Institute is responsible for the interpretation of specific technical
content. Any comments or suggestions during the implementation of this
specification please send to China Building Standard Design Institute (No.2
International Building, No.9, Shouti South Road, Haidian District, Beijing
100048, China).
The responsible drafting organizations of this specification. China Building
Standard Design and Research Institute
The participating drafting organizations of this specification.
Xi'an University of Architecture and Technology
Tongji University
Changan University
Tsinghua University
Ministry of Public Security Tianjin Fire Research Institute
BlueScope Steel (China)
Shanghai Meijian Steel Structure Co., Ltd
North New Housing Co., Ltd
Shanghai Green Building System Co., Ltd
Owens Corning (China) Investment Co., Ltd
Beijing Hostec Steel Structure Co., Ltd
China Construction Metal Structure Association Construction Steel
Structure Committee
Zhejiang Hangxiao Steel Structure Co., Ltd
Shanghai Beststeel Structure Building Co., Ltd
The main drafter of this specification. Shen Zuyan, He Baokang, Yu Yinquan,
Zhou Tianhua, Shen Lin, Li Yuanqi, Guo Yanlin, Wang Yanmin, Liu Chengzong,
Su Mingzhou, Qin Yafei, Wang Zongcun, Zhang Yuefeng, Zhang Zhongquan,
Jiang Tao, Yang Pengfei, Yang Jiayi, Du Zhaoyu, Li Zhengchun, Yang
Qiangyue, Wu Shuchong
The main reviewer of the specification. Zhang Yaochun, Zhou Xuhong, Chen
Xueting, Xu Houjun, Jiang Xueshi, Guo Yaojie, Gu Qiang, Li Zhiming, Guo
Bing
Table of Contents
1 General provisions ... 8
2 Terms and symbols ... 8
2.1 Terms ... 8
3 Materials and design indices ... 14
3.1 Material selection ... 14
3.2 Design indices ... 16
4 Basic design requirements ... 17
4.1 Design principles ... 17
4.2 Loads and actions ... 18
4.3 Architectural design and structural layout ... 19
4.4 Allowable value for deformation of structures and structural members ... 22
4.5 General requirements for detailing ... 23
5 Structural analysis ... 26
5.1 Calculation principles of structures ... 26
5.2 Analysis of horizontal load effects ... 27
6 Calculation of members and connections ... 29
6.1 Calculation of members ... 29
6.2 Calculation and detailing of connections ... 36
7 Floor systems ... 37
7.1 General requirements ... 37
7.2 Detailing of floor systems ... 38
8 Wall framing systems ... 45
8.1 General provisions ... 45
8.2 Calculation of wall framings ... 47
8.3 Requirements for detailing ... 51
9 Roof systems ... 56
9.1 General requirements ... 56
9.2 Calculation of roof systems ... 57
9.3 Requirements for detailing of roof joints ... 59
10 Fabrication, coating, erection and acceptance ... 61
10.1 Fabrication ... 61
10.2 Coating works of anticorrosion ... 61
10.3 Erection ... 62
10.4 Final acceptance ... 63
11 Heat preservation and insulation, damp proof ... 65
11.1 General requirements ... 65
11.2 Detailing of heat preservation and insulation ... 66
11.3 Detailing of damp proof ... 66
12 Fireproofing ... 67
13 Testing... 68
13.1 General requirements ... 68
13.2 Performance testing ... 68
Appendix A Test method on design shear strength of screws ... 71
Appendix B Test method on shear strength of wall framings ... 74
Appendix C Calculation on distortional buckling stress of C shape members 77
Explanation of wording in this specification ... 80
List of quoted standards ... 81
[Translator note. Above “Contents” is the original contents from the Chinese
version]
Technical specification for low-rise
cold-formed thin-walled steel buildings
1 General provisions
1.0.1 This specification is established for the purposes of standardizing the
design, fabrication, erection and acceptance of low-rise cold-formed
thin-walled steel buildings, in order to realize advanced technology, reasonable
economics, safety and applicability, and high quality.
1.0.2 This specification is applicable to the design, construction and
acceptance of low-rise buildings with cold-formed thin-walled steel as the main
bearing steel-members [Translator note. For the purpose of this standard,
“steel-” is additionally prefixed in front of “member”, hereafter the same],
having not more than 3 floors, AND with the eave height not more than 12m.
1.0.3 This specification is established in accordance with the principles as
specified in current national standards “Unified standard for reliability design of
building structures” GB 50068, “Load code for the design of building
structures” GB 50009, “Code for seismic design buildings” GB 50011, “Code
for design of steel structures” GB 50017, “Technical code of cold-formed
thin-wall steel structures” GB 50018, and “Code for acceptance of construction
quality of steel structures” GB 50205, and so on, AND combining with the
low-rise cold-formed thin-walled steel building characteristics.
1.0.4 When designing the low-rise cold-formed thin-walled steel buildings, it
shall reasonably select the materials, structural programs and construction
measures, AND ensure the structures comply with the strength, stability, and
rigidity requirements, as well as the fireproofing and anticorrosion
requirements.
1.0.5 The design, construction and acceptance of low-rise cold-formed
thin-walled steel buildings shall, in addition to complying with this specification,
also comply with the provisions of the relevant current national standards.
2 Terms and symbols
2.1 Terms
2.1.1
Web stiffener [Translator note. This term, in bold, is the original English
term in the Chinese version, hereafter the same]
It refers to the steel-member connected to the web to prevent buckling of the
web.
2.1.2
Blocking
It refers to the steel-member that is connected to the structural
steel-member to transmit the lateral force out of the structural steel-member
plane AND to provide the lateral support to the supported steel-member.
2.1.3
Built-up member
It refers to the I-shaped or box-shaped steel-member composed of channel
steel-member or curling channel steel-member through connection.
2.1.4
Clip angle
It refers to the steel-member usually bent to 90° for the purposes of
steel-member connection.
2.1.5
Eave overhang
It refers to the horizontal distance from the structural edge of the exterior
wall to the structural edge of the roof.
2.1.6
Flat strap
It refers to the strap steel-member of certain width which is cut from steel
plate, AND used as the brace for supporting purposes OR used to transmit
tensile force.
2.1.7
Floor joist
It refers to the horizontal steel-member used to support the floor load.
2.1.8
Header
It refers to the horizontal steel-member at the opening of the wall or roof
which is mainly used to transmit the vertical load to the adjacent vertical
bearing steel-members.
2.1.9
Wall stud
It refers to the vertical bearing steel-member which makes up the wall unit.
2.1.10
Rafter
It refers to the roof steel-member which is arranged in in inclined manner
along the roof slope to support the roof load.
2.1.11
Gable overhang
It refers to the horizontal distance from the structural edge of the gable to
the structural edge of the roof.
2.1.12
Stressed skin action
It refers to the capability of the structural sheet system which is reliably
connected to the supporting steel-member to resis...
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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