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GB 50011-2010 (2016 Edition)
Code for Seismic Design of Buildings
ISSUED ON. MAY 31, 2010
Jointly Issued by the Ministry of Housing and Urban-rural Construction of
the People’s Republic of China and the General
Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China
According to the requirements of Document Jian Biao [2006] No.77—―Notice on
Printing and Distributing the Development and Revision Plan of Engineering Construction
Standards and Codes in 2006 (Batch 1)‖ issued by the former Ministry of Construction
(MOC), this code was revised from GB 50011-2001 ―Code for Seismic Design of Buildings‖
by China Academy of Building Research (CABR) together with other design, survey, research
and education institutions concerned.
During the process of revision, the editorial team summarized the experiences in
building seismic damages during Wenchuan Earthquake in 2008; adjusted the seismic
precautionary intensities of the relevant disaster areas; added some compulsory provisions on
the sites in mountainous areas, the arrangements of the infilled wall in frame structure, the
requirements for staircase of masonry structure and the construction requirements of seismic
structure; and raised the requirements for the details of the precast floor slab and for the
reinforced elongation. Hereafter, the editorial team carried out studies on specific topics and
some tests concerned, investigated and summarized the experiences and lessons from the
strong earthquakes occurred in recent years home and abroad (including Wenchuan
Earthquake), adopted the new research achievements of earthquake engineering, took the
economic condition and construction practices in China into account, widely collected the
comments from the relevant design, survey, research and education institutions as well as
seismic administration authorities nationwide. Through a multi-round discussion, revision,
substantiation, and with pilot designs as well, the final version has been completed and
reviewed by an expert panel. This newly-revised version comprises 14 Chapters and 12
Appendixes. Besides remaining those provisions partially revised in 2008, the main revisions
at this edition are.
1. supplementing the provisions on the seismic measures for areas with the
seismic precaution Intensity 7 (0.15g) and Intensity 8 (0.30g),
2. adjusting the Design Earthquake Groups of Main Cities in China in accordance
with GB18306-2001 ―Seismic Ground Motion Parameter Zonation Map of
3. improving the soil liquefaction discriminating equation;
4. adjusting the damping modification parameter of design response spectrum,
5. modifying the damping ratio and the seismic adjusting factor for load-bearing
capacity of steel structure,
6. modifying the calculation methods of the horizontal seismic-reduced factor of
seismically isolated structure,
7. supplementing the calculation method for horizontal and vertical earthquake
action of large-span buildings;
8. raising the seismic design requirements for concrete frame structure buildings
and for masonry buildings with RC frames on ground floors.
9. proposing the classification method for the seismic grades of steel structure
buildings, and adjusting the provisions on seismic measures, correspondingly;
10. improving the seismic measures for multi-storey masonry buildings, concrete
1 General ... 11
2 Terms and Symbols ... 12
2.1 Terms ... 12
2.2 Symbols ... 13
3 Basic Requirements of Seismic Design ... 15
3.1 Category and Criterion for Seismic Precaution of Buildings ... 15
3.2 Earthquake Ground Motion ... 15
3.3 Site and Soil ... 15
3.4 Regularity of Building Configuration and Structural Assembly ... 16
3.5 Structural System ... 19
3.6 Structural Analysis ... 20
3.7 Nonstructural Components ... 21
3.8 Isolation and Energy-Dissipation ... 22
3.9 Materials and Construction ... 22
3.10 Seismic Performance-Based Design of Buildings ... 23
3.11 Seismic Response Observation System of Buildings ... 25
4 Site, Soil and Foundation ... 26
4.1 Site ... 26
4.2 Natural Soil and Foundation ... 29
4.3 Liquefied Soil and Soft Soil ... 30
4.4 Pile Foundation ... 35
5 Earthquake Action and Seismic Checking for Structures ... 36
5.1 General... 37
5.2 Calculation of Horizontal Earthquake Action ... 41
5.3 Calculation of Vertical Earthquake Action ... 46
5.4 Seismic Checking for the Sections of Structural Member ... 47
5.5 Seismic Checking for the Storey Drift ... 49
6 Multi-storey and Tall Reinforced Concrete Buildings ... 53
6.1 General... 53
6.2 Essentials in Calculation ... 59
6.3 Details of Seismic Design for Frame Structures ... 64
6.4 Details of Seismic Design for Seismic Wall Structures ... 70
6.5 Details of Seismic Design for Frame-seismic-Wall Structures ... 73
6.6 Requirements for Seismic Design of Slab-column-seismic-Wall Structures ... 74
6.7 Requirements for Seismic Design of Tube Structures ... 75
7 Multi-storey Masonry Buildings and Multi-storey Masonry Buildings with RC
Frames on Ground Floors ... 78
7.1 General... 78
7.2 Essentials in Calculation ... 83
7.3 Details of Seismic Design of Multi-storey Brick Buildings ... 88
7.4 Details of Seismic Design of Multi-storey Concrete Block Buildings ... 93
7.5 Details of Seismic Design of Multi-storey Masonry Buildings with RC Frames and
Seismic-Walls on Ground Floors ... 96
8 Multi-Storey and Tall Steel Buildings ... 100
8.1 General... 100
8.2 Essentials in Calculation ... 102
8.3 Details for Steel Frame Structures ... 108
8.4 Details for Steel Frame-concentrically-braced Structures ... 111
8.5 Details for Steel Frame-eccentrically-braced Structures ... 112
9 Single-storey Factory Buildings ... 115
9.1 Single-storey Factory Buildings with Reinforced Concrete Columns ... 115
9.2 Single-storey Steel Factory Buildings ... 125
9.3 Single-storey Factory Buildings with Brick Columns ... 131
10 Large-span Buildings ... 135
10.1 Single-storey Spacious Buildings ... 135
10.2 Large-span Roof Buildings ... 137
11 Earth, Wood and Stone Houses ... 142
11.1 General ... 142
11.2 Unfired Earth Houses ... 143
11.3 Wood Houses ... 144
11.4 Stone Houses ... 146
12 Seismically Isolated and Energy-Dissipated Buildings ... 148
12.1 General ... 148
12.2 Essentials in Design of Seismically Isolated Buildings ... 149
12.3 Essentials in Design of Seismic-energy-dissipated Buildings ... 154
13 Nonstructural Components ... 159
13.1 General ... 159
13.2 Basic Requirements for Calculation ... 159
13.3 Basic Seismic-Measures for Architectural Members ... 161
14 Subterranean Buildings ... 166
14.1 General ... 166
14.2 Essentials in Calculation ... 166
14.3 Seismic Details and Anti-liquefaction Measures ... 168
Appendix A The Seismic Precautionary Intensity, Design Basic Acceleration of
Ground Motion and Design Earthquake Groups of Main Cities and Towns in China
... 170
Appendix B Requirements for Seismic Design of High Strength Concrete Structures
... 205
Appendix C Requirements for Seismic Design of Prestressed Concrete Structures
... 207
Appendix D Section Seismic Check for the Beam-column Joint Core Zone of
Frames ... 209
Appendix E Requirements for Seismic Design of the Transfer Storey Structures . 213
Appendix F Requirements for Seismic Design of Reinforced Concrete Small-sized
Hollow Block Seismic -Wall Buildings ... 215
Appendix G Requirements for Seismic Design of Buildings with Steel
Brace-Concrete Frame Structures and Steel Frame-Reinforced Concrete Core Tube
Structures ... 223
Appendix H Requirements for Seismic Design of Multi-storey Factory Buildings
... 226
Appendix J Seismic Effect Adjustment for Transversal Planar-Bent of Single-Storey
Factory ... 233
Appendix K Longitudinal Seismic Check for Single-Storey Factory ... 236
Appendix L Simplified Calculation for Seismically Isolated Design and Seismically
Isolated Measures of Masonry Structures ... 242
Appendix M Reference Procedures of Performance-based Seismic Design ... 247
Explanation of Wording in This Code ... 254
List of Quoted Standards ... 255
1 General
1.0.1 This code is formulated with a view to implementing the relevant laws and regulations
on construction engineering and protecting against and mitigating earthquake disasters,
carrying out the policy of ―prevention first‖, as well as alleviating the seismic damage of
buildings, avoiding casualties and reducing economic loss through seismic precautionary of
The basic seismic precautionary objectives of buildings which designed and constructed
in accordance with this code, are as follows.
1) under the frequent earthquake ground motion with an intensity being less than the
local Seismic Precautionary Intensity, the buildings with major structure undamaged
or requiring no repair may continue to serve;
2) under the earthquake ground motion with an intensity being equivalent to the local
Seismic Precautionary Intensity, the buildings with possible damage may continue
to serve with common repair; or
3) under the rare earthquake ground motion with an intensity being larger than the
local Seismic Precautionary Intensity, the buildings shall not collapse or shall be
free from such severe damage that may endanger human lives.
If the buildings with special requirements in functions or other aspects are carried out
with the seismic performance-based design, more concrete and higher seismic precautionary
objectives shall be established.
1.0.2 All the buildings situated on zones of Seismic Precautionary Intensity 6 or above
must be carried out with seismic design.
1.0.3 This...
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.