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Code for design of masonry structures
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Code for design of masonry structures
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Basic data | Standard ID | GB 50003-2011 (GB50003-2011) | | Description (Translated English) | Code for design of masonry structures | | Sector / Industry | National Standard | | Classification of Chinese Standard | P24 | | Classification of International Standard | 91.080.30 | | Word Count Estimation | 205,253 | | Date of Issue | 2011-07-26 | | Date of Implementation | 2012-08-01 | | Older Standard (superseded by this standard) | GB 50003-2001 | | Quoted Standard | GB 50007; GB 50009; GB 50010; GB 50011; GB 50068; GB/T 50083; GB 50203; GB 50204; GB 50223; GB 50574; JGJ 95 | | Regulation (derived from) | Bulletin of the Ministry of Housing and Urban No. 1094 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China | | Summary | This Chinese standard applies to the construction of the following masonry structure design, special conditions or special requirements specific provisions should be designed: 1. Brickwork include: sintered common brick, perforated bricks, autoclaved lime-sand ordinary brick, autoclaved fly ash ordinary brick, concrete common brick, concrete, brick and masonry reinforcement, 2. masonry | GB 50003-2011: Code for design of masonry structures
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NATIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
Code for Design of Masonry Structures
Issued on: JOLY 26, 2011
Implemented on: AUGUST 1, 2012
Jointly Issued by Ministry of Housing and Urban-Rural Development of the People's
Republic of China
General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China
Foreword
According to the requirements of the document "Notice on Printing and Publishing 'Development
and Revision Plan of Engineering Construction Standards and Specifications in 2007 (first batch)"'
(Jian Biao [2007] No. 125) issued by the former Ministry of Construction, This code is revised by
China Northeast Architecture Design and Research Institute Co., Ltd. together with organizations
concerned based on "Code for Design of Masonry Structures" GB 50003-2001.
During the revision process, the drafting group considered the economic conditions and the current
status of masonry structures according to the principle of "supplement, simplification and perfection",
summarized new experience in the application of masonry structures in recent years, investigated the
earthquake resistance hazard of masonry structures in Wenchuan and Yushu earthquake, conducted
necessary test research and supplemented clauses for local new masonry materials emerging in energy
conservation and emission reduction and wall material innovation environment by reference to the
mature achievements of scientific research in masonry structure field, and perfected relevant content
of masonry structure durability, detailing requirements, reinforced concrete masonry members, earthquake
resistance design for masonry structure members, etc., meanwhile, conducted necessary simplification
for adjustment coefficient of masonry strength, etc ..
The revised contents extensively solicited for the comment and suggestion of relevant design,
scientific research, teaching, construction, enterprise and relevant management department nationwide,
and finally finalized upon review through multiple repeat discussion, modification and replenishment.
This code comprises 10 cha-pters and 4 appendixes, with main technical content including. general
provisions, terms and symbols, materials, basic rules on design, unreinforced masonry members, detailing
requirements, ring beams, lintels, wall beams and cantilever beams, reinforced brick masonry members,
reinforced concrete masonry members, earthquake resistance design for masonry structure members,
etc ..
Main revised contents of this code. add mature and feasible new masonry materials which adapt
energy conservation and emission reduction and wall material innovation requirements and propose
corresponding design method; revise evaluation method of local masonry strength according to test
research and simplify the adjustment coefficient of masonry strength; add the relevant requirements
for increasing masonry durability; perfect detailing requirements of masonry structures; supplement
measures for preventing or relieving wall cracking caused by material deformation with respect to
crack problems existing in new masonry material wall; perfect and supplement detailing requirements
for the design of cavity wall filled with insulation; supplement the calculation methQd of eccentric
compression outside masonry composite wall plane; enlarge the application scope of reinforced concrete
masonry structure, add design requirements for frame-supported reinforced masonry block shear wall
building; perfect earthquake resistance design method for masonry structures according to earthquake
resistance hazard and in combination with masonry structure characteristic, and supplement earthquake
resistance design method for infilled wall in concrete frame structure_
The provisions printed in bold type are compulsory ones in this code and must be enforced
strictly.
The Ministry of Housing and Urban-Rural Development of the People's Republic of China is in
charge of the administration of this code and the explanation of compulsory provisions, and China
Table of Contents
General Provisions ... 1
2 Terms and Symbols ... 2
2.1 Terms ... 2
2.2 Symbols ... 5
3 Materials ... 10
3.1 Strength Class of Materials ... 10
3.2 Calculation Data of Masonry ... 11
4 Basic Rules on Design ... 17
4.1 Principles of Design ... 17
4.2 Stipulations for Static Calculation of Buildings ... 19
4.3 Rules on Durability ... 22
5 Unreinforced Masonry Members ... 25
5.1 Compression Members ... 25
5.2 Local Compression ... ~ ... 27
5.3 Members Subjected to Axial Tensile Load ... 31
5.4 Members Subjected to Bending ... 31
5.5 Members Subjected to Shear ... 32
6 Detailing Requirements ... 34
6.1 Verification for Slenderness Ratio of Wall and Column ... 34
6.2 General Detailing Requirements ... 36
6.3 Frame Filled Wall ... 38
6.4 Cavity Wall Filled with Insulation ... 40
6.5 Main Measures to Prevent Walls from Cracking ... 4 1
7 Ring Beams, Lintels, Wall Beams and Cantilever Beams ... 44
7 .1 Ring Beams ... 44
7 .2 Lintels ... 45
7.3 Wall Beams ... 46
7.4 Cantilever Beams ... 52
8 Reinforced Brick Masonry Members ... 56
8.1 Mesh-reinforced Brick Masonry Members ... 56
8.2 Composite Brick Masonry Members ... 57
9 Reinforced Concrete Masonry Members ... 63
9 .1 General Requirements ... 63
9.2 Calculation of Reinforced Masonry Members Subjected to Axial Compression ... 63
9.3 Calculation of Reinforced Masonry Members Subjected to Shear ... 67
9 .4 Detail Stipulation of Reinforced Concrete Masonry Shear Walls ... 69
10 Earthquake Resistance Design for Masonry Structure Members ... 74
I 0.1 General Requirements ... 74
I 0.2 Brick Masonry Members ... 80
10.3 Concrete Masonry Members ... 85
10.4 Earthquake Resistant Elements of Masonry Buildings with Bottom Frames ... 89
I 0.5 Earthquake Resistant Wall of Reinforced Concrete Masonry ... 93
Appendix A Specification and Dimension of Stone Materials and the Method for Defining the
Strength Grades of Stone Materials ... 99
Appendix B Calculating Formulas for Strength Mean Values of Various Kinds of Masonry and Their
Characteristic Strength Values ... 100
Appendix C Statical Calculation of "Semi-rigid" Buildings ... 103
Appendix D Influence Coefficients < p and < /Jn ... 104
Explanation of Wording in This Code ... 110
List of Quoted Standards ... I 11
1 General Provisions
1.0.1 This code is formulated with a view to implementing the technical and economic policies of
the nation, persisting in wall material innovation, adjusting measures to local conditions, using local
materials, reasonably selecting structural scheme and masonry materials, and achieving advanced
technology, safety and usability, economy and rationality and quality guarantee.
1.0.2 This code is applicable to the design of the following masonry structures in building engineering,
and the design for special conditions or with specific requirements shall be carried out according to
special requirements.
1 Brick masonry. including unreinforced and reinforced masonry of fired common brick, fired
perforated brick, autoclaved sand-lime brick, autoclaved flyash-lime brick, common concrete brick
and perforated concrete brick;
2 Block masonry. including unreinforced and reinforced masonry of concrete block and light
aggregate concrete block;
3 Stone masonry. including masonry of various squared stones and rubbles.
1.0.3 This code is established according to the principle specified in the current national standard
"Unified Standard Reliability Design of Building Structures" GB 50068. The design terms and symbols
are adopted according to the requirements of the current national standard "Standard for Terminology
and Symbols Used in Design of Building Structures" GB/T 50083.
1.0.4 For design according to this code, the load shall comply with the current national standard
"Load Code for the Design of Building Structures" GB 50009; the selection and application of wall
materials shall comply with the current national standard "Uniform Technical Code for Wall Material
used in Buildings" GB 50574; the selection of concrete materials shall meet the requirements of the
current national standard "Code for Design of Concrete Structures" GB 5001 O; the construction quality
control shall meet the requirements of the current national standards "Code for Acceptance of
Constructional Quality of Masonry Structures" GB 50203 and "Code for Acceptance of Constructional
Quality of Concrete Structures" GB 50204; and the structural earthquake resistance design shall meet
the relevant requirements of the cu...
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