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 buildings.
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 code is applicable to the seismic design and the isolation and energy-dissipation design of the buildings suited on zones of Seismic Precautionary Intensity 6, 7, 8 and 9. And the seismic performance-based design of buildings may be implemented in accordance with the basic methods specified in this code.
As for the buildings suited on zones where the Seismic Precautionary Intensity is above Intensity 9 and the industrial buildings for special purpose, their seismic design shall be carried out according to the relevant special provisions.
Note: For the purposes of this code, “Seismic Precautionary Intensity 6, 7, 8 and 9” hereinafter is referred to “Intensity 6, 7, 8 and 9”.
1.0.4 The Seismic Precautionary Intensity must be determined in accordance with the documents (drawings) examined, approved and issued by the authorities appointed by the State.
1.0.5 Generally, the seismic precautionary intensity of buildings shall be adopted with the basic seismic intensity (the intensity values corresponding to the design basic acceleration of ground motion value in this code) determined according to the “Seismic Ground Motion Parameter Zonation Map of China”.
1.0.6 In addition to the requirements of this code, the seismic design of buildings also shall comply with the requirements specified in the relevant current standards of the State.
2 Terms and Symbols
2.1 Terms
2.1.1 Seismic precautionary intensity
The seismic intensity approved by the authority appointed by the State, which is used as the basis for the seismic precaution of buildings in a certain region. Generally, it is taken as the seismic Intensity with a 10% probability of exceedance in 50 years.
2.1.2 Seismic precautionary criterion
The rule for judging the seismic precautionary requirements, which is dependent on the Seismic Precautionary Intensity or the design parameters of ground motion and the precautionary category of buildings.
2.1.3 Seismic ground motion parameter zonation map
The map in which the whole county is divided into regions with different seismic precautionary requirements according to the ground motion parameter (that is the degree of earthquake ground motion intensity indicated by acceleration).
2.1.4 Earthquake action
The dynamic response of structure caused by earthquake ground motion, including horizontal and vertical earthquake action.
2.1.5 Design parameters of earthquake ground motion
The parameters of earthquake ground motion used in seismic design, including the acceleration (velocity or displacement) time history of the earthquake ground motion , the acceleration response spectrum and the peak value of ground acceleration
2.1.6 Design basic acceleration of earthquake ground motion
The design value of seismic acceleration with a 10% probability of exceedance in the 50-years design reference period.
2.1.7 Design characteristic period of earthquake ground motion
The period value corresponding to the starting point of the descending section of the seismic influence coefficient curve used for seismic design, that is dependent on the earthquake magnitude, epicentral distance, site class and etc. For convenience, it is named as “characteristic period” for short.
2.1.8 Site
Locations of the project colonies, being with similar characteristics of response spectra. The scope of site is equivalent to plant area, residential area and natural village or the plane area no less than 1.0km2.
2.1.9 Seismic concept design of buildings
The process of making the general arrangement for the buildings and structures and of determining details, based on the fundamental design principles and concepts obtained from the past experiences in earthquake disasters and projects.
2.1.10 Seismic measures
The seismic design contents except earthquake action calculation and member resistance calculation, including the details of seismic design.
2.1.11 Details of seismic design
All the detailed requirements that must be taken for the structural and nonstructural components according to seismic concept design principles and require no calculation generally.
1 General
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Basic Requirements of Seismic Design
3.1 Category and Criterion for Seismic Precaution of Buildings
3.2 Earthquake Ground Motion
3.3 Site and Soil
3.4 Regularity of Building Configuration and Structural Assembly
3.5 Structural System
3.6 Structural Analysis
3.7 Nonstructural Components
3.8 Isolation and Energy-Dissipation
3.9 Materials and Construction
3.10 Seismic Performance-Based Design of Buildings
3.11 Seismic Response Observation System of Buildings
4 Site, Soil and Foundation
4.1 Site
4.2 Natural Soil and Foundation
4.3 Liquefied Soil and Soft Soil
4.4 Pile Foundation
5 Earthquake Action and Seismic Checking for Structures
5.1 General
5.2 Calculation of Horizontal Earthquake Action
5.3 Calculation of Vertical Earthquake Action
5.4 Seismic Checking for the Sections of Structural Member
5.5 Seismic Checking for the Storey Drift
6 Multi-storey and Tall Reinforced Concrete Buildings
6.1 General
6.2 Essentials in Calculation
6.3 Details of Seismic Design for Frame Structures
6.4 Details of Seismic Design for Seismic Wall Structures
6.5 Details of Seismic Design for Frame-seismic-Wall Structures
6.6 Requirements for Seismic Design of Slab-column-seismic-Wall Structures
6.7 Requirements for Seismic Design of Tube Structures
7 Multi-storey Masonry Buildings and Multi-storey Masonry Buildings with RC Frames on Ground Floors
7.1 General
7.2 Essentials in Calculation
7.3 Details of Seismic Design of Multi-storey Brick Buildings
7.4 Details of Seismic Design of Multi-storey Concrete Block Buildings
7.5 Details of Seismic Design of Multi-storey Masonry Buildings with RC Frames and Seismic-Walls on Ground Floors
8 Multi-Storey and Tall Steel Buildings
8.1 General
8.2 Essentials in Calculation
8.3 Details for Steel Frame Structures
8.4 Details for Steel Frame-concentrically-braced Structures
8.5 Details for Steel Frame-eccentrically-braced Structures
9 Single-storey Factory Buildings
9.1 Single-storey Factory Buildings with Reinforced Concrete Columns
9.2 Single-storey Steel Factory Buildings
9.3 Single-storey Factory Buildings with Brick Columns
10 Large-span Buildings
10.1 Single-storey Spacious Buildings
10.2 Large-span Roof Buildings
11 Earth, Wood and Stone Houses
11.1 General
11.2 Unfired Earth Houses
11.3 Wood Houses
11.4 Stone Houses
12 Seismically Isolated and Energy-Dissipated Buildings
12.1 General
12.2 Essentials in Design of Seismically Isolated Buildings
12.3 Essentials in Design of Seismic-energy-dissipated Buildings
13 Nonstructural Components
13.1 General
13.2 Basic Requirements for Calculation
13.3 Basic Seismic-Measures for Architectural Members
14 Subterranean Buildings
14.1 General
14.2 Essentials in Calculation
14.3 Seismic Details and Anti-liquefaction Measures
Appendix A The Seismic Precautionary Intensity, Design Basic Acceleration of Ground Motion and Design Earthquake Groups of Main Cities and Towns in China
Appendix B Requirements for Seismic Design of High Strength Concrete Structures
Appendix C Requirements for Seismic Design of Prestressed Concrete Structures
Appendix D Section Seismic Check for the Beam-column Joint Core Zone of Frames
Appendix E Requirements for Seismic Design of the Transfer Storey Structures
Appendix F Requirements for Seismic Design of Reinforced Concrete Small-sized Hollow Block Seismic -Wall Buildings
Appendix G Requirements for Seismic Design of Buildings with Steel Brace-Concrete Frame Structures and Steel Frame-Reinforced Concrete Core Tube Structures
Appendix H Requirements for Seismic Design of Multi-storey Factory Buildings
Appendix J Seismic Effect Adjustment for Transversal Planar-Bent of Single-Storey Factory
Appendix K Longitudinal Seismic Check for Single-Storey Factory
Appendix L Simplified Calculation for Seismically Isolated Design and Seismically Isolated Measures of Masonry Structures
Appendix M Reference Procedures of Performance-based Seismic Design
Explanation of Wording in This Code
List of Quoted Standards
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 buildings.
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 code is applicable to the seismic design and the isolation and energy-dissipation design of the buildings suited on zones of Seismic Precautionary Intensity 6, 7, 8 and 9. And the seismic performance-based design of buildings may be implemented in accordance with the basic methods specified in this code.
As for the buildings suited on zones where the Seismic Precautionary Intensity is above Intensity 9 and the industrial buildings for special purpose, their seismic design shall be carried out according to the relevant special provisions.
Note: For the purposes of this code, “Seismic Precautionary Intensity 6, 7, 8 and 9” hereinafter is referred to “Intensity 6, 7, 8 and 9”.
1.0.4 The Seismic Precautionary Intensity must be determined in accordance with the documents (drawings) examined, approved and issued by the authorities appointed by the State.
1.0.5 Generally, the seismic precautionary intensity of buildings shall be adopted with the basic seismic intensity (the intensity values corresponding to the design basic acceleration of ground motion value in this code) determined according to the “Seismic Ground Motion Parameter Zonation Map of China”.
1.0.6 In addition to the requirements of this code, the seismic design of buildings also shall comply with the requirements specified in the relevant current standards of the State.
2 Terms and Symbols
2.1 Terms
2.1.1 Seismic precautionary intensity
The seismic intensity approved by the authority appointed by the State, which is used as the basis for the seismic precaution of buildings in a certain region. Generally, it is taken as the seismic Intensity with a 10% probability of exceedance in 50 years.
2.1.2 Seismic precautionary criterion
The rule for judging the seismic precautionary requirements, which is dependent on the Seismic Precautionary Intensity or the design parameters of ground motion and the precautionary category of buildings.
2.1.3 Seismic ground motion parameter zonation map
The map in which the whole county is divided into regions with different seismic precautionary requirements according to the ground motion parameter (that is the degree of earthquake ground motion intensity indicated by acceleration).
2.1.4 Earthquake action
The dynamic response of structure caused by earthquake ground motion, including horizontal and vertical earthquake action.
2.1.5 Design parameters of earthquake ground motion
The parameters of earthquake ground motion used in seismic design, including the acceleration (velocity or displacement) time history of the earthquake ground motion , the acceleration response spectrum and the peak value of ground acceleration
2.1.6 Design basic acceleration of earthquake ground motion
The design value of seismic acceleration with a 10% probability of exceedance in the 50-years design reference period.
2.1.7 Design characteristic period of earthquake ground motion
The period value corresponding to the starting point of the descending section of the seismic influence coefficient curve used for seismic design, that is dependent on the earthquake magnitude, epicentral distance, site class and etc. For convenience, it is named as “characteristic period” for short.
2.1.8 Site
Locations of the project colonies, being with similar characteristics of response spectra. The scope of site is equivalent to plant area, residential area and natural village or the plane area no less than 1.0km2.
2.1.9 Seismic concept design of buildings
The process of making the general arrangement for the buildings and structures and of determining details, based on the fundamental design principles and concepts obtained from the past experiences in earthquake disasters and projects.
2.1.10 Seismic measures
The seismic design contents except earthquake action calculation and member resistance calculation, including the details of seismic design.
2.1.11 Details of seismic design
All the detailed requirements that must be taken for the structural and nonstructural components according to seismic concept design principles and require no calculation generally.
Contents of GB 50011-2010(2016)
1 General
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Basic Requirements of Seismic Design
3.1 Category and Criterion for Seismic Precaution of Buildings
3.2 Earthquake Ground Motion
3.3 Site and Soil
3.4 Regularity of Building Configuration and Structural Assembly
3.5 Structural System
3.6 Structural Analysis
3.7 Nonstructural Components
3.8 Isolation and Energy-Dissipation
3.9 Materials and Construction
3.10 Seismic Performance-Based Design of Buildings
3.11 Seismic Response Observation System of Buildings
4 Site, Soil and Foundation
4.1 Site
4.2 Natural Soil and Foundation
4.3 Liquefied Soil and Soft Soil
4.4 Pile Foundation
5 Earthquake Action and Seismic Checking for Structures
5.1 General
5.2 Calculation of Horizontal Earthquake Action
5.3 Calculation of Vertical Earthquake Action
5.4 Seismic Checking for the Sections of Structural Member
5.5 Seismic Checking for the Storey Drift
6 Multi-storey and Tall Reinforced Concrete Buildings
6.1 General
6.2 Essentials in Calculation
6.3 Details of Seismic Design for Frame Structures
6.4 Details of Seismic Design for Seismic Wall Structures
6.5 Details of Seismic Design for Frame-seismic-Wall Structures
6.6 Requirements for Seismic Design of Slab-column-seismic-Wall Structures
6.7 Requirements for Seismic Design of Tube Structures
7 Multi-storey Masonry Buildings and Multi-storey Masonry Buildings with RC Frames on Ground Floors
7.1 General
7.2 Essentials in Calculation
7.3 Details of Seismic Design of Multi-storey Brick Buildings
7.4 Details of Seismic Design of Multi-storey Concrete Block Buildings
7.5 Details of Seismic Design of Multi-storey Masonry Buildings with RC Frames and Seismic-Walls on Ground Floors
8 Multi-Storey and Tall Steel Buildings
8.1 General
8.2 Essentials in Calculation
8.3 Details for Steel Frame Structures
8.4 Details for Steel Frame-concentrically-braced Structures
8.5 Details for Steel Frame-eccentrically-braced Structures
9 Single-storey Factory Buildings
9.1 Single-storey Factory Buildings with Reinforced Concrete Columns
9.2 Single-storey Steel Factory Buildings
9.3 Single-storey Factory Buildings with Brick Columns
10 Large-span Buildings
10.1 Single-storey Spacious Buildings
10.2 Large-span Roof Buildings
11 Earth, Wood and Stone Houses
11.1 General
11.2 Unfired Earth Houses
11.3 Wood Houses
11.4 Stone Houses
12 Seismically Isolated and Energy-Dissipated Buildings
12.1 General
12.2 Essentials in Design of Seismically Isolated Buildings
12.3 Essentials in Design of Seismic-energy-dissipated Buildings
13 Nonstructural Components
13.1 General
13.2 Basic Requirements for Calculation
13.3 Basic Seismic-Measures for Architectural Members
14 Subterranean Buildings
14.1 General
14.2 Essentials in Calculation
14.3 Seismic Details and Anti-liquefaction Measures
Appendix A The Seismic Precautionary Intensity, Design Basic Acceleration of Ground Motion and Design Earthquake Groups of Main Cities and Towns in China
Appendix B Requirements for Seismic Design of High Strength Concrete Structures
Appendix C Requirements for Seismic Design of Prestressed Concrete Structures
Appendix D Section Seismic Check for the Beam-column Joint Core Zone of Frames
Appendix E Requirements for Seismic Design of the Transfer Storey Structures
Appendix F Requirements for Seismic Design of Reinforced Concrete Small-sized Hollow Block Seismic -Wall Buildings
Appendix G Requirements for Seismic Design of Buildings with Steel Brace-Concrete Frame Structures and Steel Frame-Reinforced Concrete Core Tube Structures
Appendix H Requirements for Seismic Design of Multi-storey Factory Buildings
Appendix J Seismic Effect Adjustment for Transversal Planar-Bent of Single-Storey Factory
Appendix K Longitudinal Seismic Check for Single-Storey Factory
Appendix L Simplified Calculation for Seismically Isolated Design and Seismically Isolated Measures of Masonry Structures
Appendix M Reference Procedures of Performance-based Seismic Design
Explanation of Wording in This Code
List of Quoted Standards
