1 General Provisions
1.0.1 This code is prepared to relieve earthquake damage, avoid casualties and reduce economic loss after the urban bridge is subjected to the seismic fortification.
1.0.2 This code is applicable to urban beam bridge of basic seismic intensity 6, 7, 8, 9 and arch bridge of span not exceeding 150m. The cable-stayed bridge, suspension bridge and long span arch bridge may be designed according to the seismic design principle given in this code.
1.0.3 Basic seismic intensity at the bridge site may be determined according to those specified in Table 1.0.3 by looking up ground motion peak acceleration in Seismic Ground Motion Parameter Zonation Map of China.
Table 1.0.3 Corresponding Relationship Between Basic Seismic Intensity and Ground Motion Peak Acceleration
Basic seismic intensity Intensity 6 Intensity 7 Intensity 8 Intensity 9
Ground motion peak acceleration 0.05g 0.10
(0.15)g 0.20
(0.30)g 0.40g
Note: g is the gravity acceleration.
1.0.4 Seismic design of urban bridge shall comply with not only this code but also the requirements of relevant current standards of the Nation.
2 Terms and Symbols
2.1 Terms
2.1.1 Seismic ground motion parameter zoning
The zoning of territory into zones of different seismic fortification requirements according to ground motion peak acceleration and ground motion response spectrum characteristic period.
2.1.2 Seismic fortification criterion
A benchmark for seismic fortification requirements, which is determined according to the basic seismic intensity and use function importance of urban bridge.
2.1.3 Earthquake action
Ground motion on the structure, including horizontal earthquake action and vertical earthquake action.
2.1.4 Earthquake action E1
Earthquake action with short return period at project site, corresponding to Level 1 fortification.
2.1.5 Earthquake action E2
Earthquake action with long return period at project site, corresponding to Level 2 fortification.
2.1.6 Seismic effect
A generic term for action effect of bridge structure internal force and deformation induced by earthquake action.
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Basic Requirements
3.1 Seismic Classification and Fortification Criterion
3.2 Earthquake Effect
3.3 Classification of Seismic Design Methods
3.4 Bridge Earthquake Resisting System
3.5 Seismic Conceptual Design
4 Site, Soil and Foundation
4.1 Site
4.2 Liquefied Soil
4.3 Capacity of Foundation
4.4 Pile Foundation
5 Earthquake Action
5.1 General Requirements
5.2 Design Acceleration Spectrum
5.3 Design Ground Motion Time History
5.4 Seismic Active Soil Pressure and Dynamic Hydraulic Pressure
5.5 Combination of Actions
6 Seismic Analysis
6.1 General Requirements
6.2 Principle of Modeling
6.3 Response Spectrum Method
6.4 Time History Analysis Method
6.5 Seismic Analysis for Regular Bridges
6.6 Calculation for Capacity Protected Member
6.7 Bridge Abutment
7 Seismic Check
7.1 General Requirements
7.2 Seismic Check for E1 Earthquake
7.3 Seismic Check for E2 Earthquake
7.4 Seismic Check for Capacity Protected Members
8 Seismic Design Details
8.1 Pier Column Detailing
8.2 Joint Detailing
9 Bridge Seismic Isolation Design
9.1 General Requirements
9.2 Seismic Isolation Devices
9.3 Seismic Analysis for Isolated Bridges
9.4 Seismic Check for Isolated Bridges
10 Cable-stayed Bridge, Suspension Bridge and Long Span Arch Bridge
10.1 General Requirements
10.2 Modelling and Analysis Principles
10.3 Performance Requirements and Seismic Check
11 Seismic Measures
11.1 General Requirements
11.2 Zone of Seismic Intensity 6
11.3 Zone of Seismic Intensity 7
11.4 Zone of Seismic Intensity 8
11.5 Zone of Seismic Intensity 9
Appendix A Effective Flexural Stiffness of Cracked Reinforced Concrete Sections
Appendix B Yielding and Ultimate Curvature Calculation for Circular and Rectangular Sections
Explanation of Wording in This Code
List of Quoted Standards
Standard
CJJ 166-2011 Code for seismic design of urban bridges (English Version)
1 General Provisions
1.0.1 This code is prepared to relieve earthquake damage, avoid casualties and reduce economic loss after the urban bridge is subjected to the seismic fortification.
1.0.2 This code is applicable to urban beam bridge of basic seismic intensity 6, 7, 8, 9 and arch bridge of span not exceeding 150m. The cable-stayed bridge, suspension bridge and long span arch bridge may be designed according to the seismic design principle given in this code.
1.0.3 Basic seismic intensity at the bridge site may be determined according to those specified in Table 1.0.3 by looking up ground motion peak acceleration in Seismic Ground Motion Parameter Zonation Map of China.
Table 1.0.3 Corresponding Relationship Between Basic Seismic Intensity and Ground Motion Peak Acceleration
Basic seismic intensity Intensity 6 Intensity 7 Intensity 8 Intensity 9
Ground motion peak acceleration 0.05g 0.10
(0.15)g 0.20
(0.30)g 0.40g
Note: g is the gravity acceleration.
1.0.4 Seismic design of urban bridge shall comply with not only this code but also the requirements of relevant current standards of the Nation.
2 Terms and Symbols
2.1 Terms
2.1.1 Seismic ground motion parameter zoning
The zoning of territory into zones of different seismic fortification requirements according to ground motion peak acceleration and ground motion response spectrum characteristic period.
2.1.2 Seismic fortification criterion
A benchmark for seismic fortification requirements, which is determined according to the basic seismic intensity and use function importance of urban bridge.
2.1.3 Earthquake action
Ground motion on the structure, including horizontal earthquake action and vertical earthquake action.
2.1.4 Earthquake action E1
Earthquake action with short return period at project site, corresponding to Level 1 fortification.
2.1.5 Earthquake action E2
Earthquake action with long return period at project site, corresponding to Level 2 fortification.
2.1.6 Seismic effect
A generic term for action effect of bridge structure internal force and deformation induced by earthquake action.
Contents of CJJ 166-2011
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Basic Requirements
3.1 Seismic Classification and Fortification Criterion
3.2 Earthquake Effect
3.3 Classification of Seismic Design Methods
3.4 Bridge Earthquake Resisting System
3.5 Seismic Conceptual Design
4 Site, Soil and Foundation
4.1 Site
4.2 Liquefied Soil
4.3 Capacity of Foundation
4.4 Pile Foundation
5 Earthquake Action
5.1 General Requirements
5.2 Design Acceleration Spectrum
5.3 Design Ground Motion Time History
5.4 Seismic Active Soil Pressure and Dynamic Hydraulic Pressure
5.5 Combination of Actions
6 Seismic Analysis
6.1 General Requirements
6.2 Principle of Modeling
6.3 Response Spectrum Method
6.4 Time History Analysis Method
6.5 Seismic Analysis for Regular Bridges
6.6 Calculation for Capacity Protected Member
6.7 Bridge Abutment
7 Seismic Check
7.1 General Requirements
7.2 Seismic Check for E1 Earthquake
7.3 Seismic Check for E2 Earthquake
7.4 Seismic Check for Capacity Protected Members
8 Seismic Design Details
8.1 Pier Column Detailing
8.2 Joint Detailing
9 Bridge Seismic Isolation Design
9.1 General Requirements
9.2 Seismic Isolation Devices
9.3 Seismic Analysis for Isolated Bridges
9.4 Seismic Check for Isolated Bridges
10 Cable-stayed Bridge, Suspension Bridge and Long Span Arch Bridge
10.1 General Requirements
10.2 Modelling and Analysis Principles
10.3 Performance Requirements and Seismic Check
11 Seismic Measures
11.1 General Requirements
11.2 Zone of Seismic Intensity 6
11.3 Zone of Seismic Intensity 7
11.4 Zone of Seismic Intensity 8
11.5 Zone of Seismic Intensity 9
Appendix A Effective Flexural Stiffness of Cracked Reinforced Concrete Sections
Appendix B Yielding and Ultimate Curvature Calculation for Circular and Rectangular Sections
Explanation of Wording in This Code
List of Quoted Standards
