ISO 16134:2020
Earthquake-resistant and subsidence-resistant design of ductile iron pipelines
This document specifies the design of earthquake-resistant and subsidence-resistant ductile iron pipelines suitable for use in areas where seismic activity and land subsidence can be expected. It provides a means of determining and checking the resistance of buried pipelines and gives example calculations. It is applicable to ductile iron pipes and fittings with joints as specified in ISO 2531, ISO 7186 and ISO 16631 that have expansion/contraction and deflection capabilities, used in pipelines buried underground.
NOTE Subsidence is not the effects of an earthquake or a sinkhole.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Earthquake-resistant design
4.1 Seismic hazards to buried pipelines
4.2 Qualitative design considerations
4.2.1 General
4.2.2 Where high earthquake resistance is needed
4.3 Design procedure
4.4 Earthquake resistance calculations and safety checking
4.5 Calculation of earthquake resistance — Response displacement method
4.5.1 General
4.5.2 Design earthquake motion
4.5.3 Horizontal displacement amplitude of ground
4.5.4 Pipe body stress
4.5.5 Expansion/contraction of joint in pipe axis direction
4.5.6 Joint deflection angle
5 Design for ground deformation by earthquake
5.1 General
5.2 Evaluation of possibility of liquefaction
5.3 Checking basic resistance
6 Design for ground subsidence in soft ground (e.g. reclaimed ground)
6.1 Calculating ground subsidence
6.2 Basic safety checking
7 Pipeline system design
7.1 Pipeline components
7.2 Countermeasures for large ground deformation such as liquefaction
Annex A (informative) Example of earthquake resistance calculation
Annex B (informative) Relationship between seismic intensity scales and ground surface acceleration
Annex C (informative) Example of calculation of liquefaction resistance coefficient value
Annex D (informative) Checking pipeline resistance to ground deformation
Annex E (informative) Example of ground subsidence calculation
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Earthquake-resistant design
4.1 Seismic hazards to buried pipelines
4.2 Qualitative design considerations
4.2.1 General
4.2.2 Where high earthquake resistance is needed
4.3 Design procedure
4.4 Earthquake resistance calculations and safety checking
4.5 Calculation of earthquake resistance — Response displacement method
4.5.1 General
4.5.2 Design earthquake motion
4.5.3 Horizontal displacement amplitude of ground
4.5.4 Pipe body stress
4.5.5 Expansion/contraction of joint in pipe axis direction
4.5.6 Joint deflection angle
5 Design for ground deformation by earthquake
5.1 General
5.2 Evaluation of possibility of liquefaction
5.3 Checking basic resistance
6 Design for ground subsidence in soft ground (e.g. reclaimed ground)
6.1 Calculating ground subsidence
6.2 Basic safety checking
7 Pipeline system design
7.1 Pipeline components
7.2 Countermeasures for large ground deformation such as liquefaction
Annex A (informative) Example of earthquake resistance calculation
Annex B (informative) Relationship between seismic intensity scales and ground surface acceleration
Annex C (informative) Example of calculation of liquefaction resistance coefficient value
Annex D (informative) Checking pipeline resistance to ground deformation
Annex E (informative) Example of ground subsidence calculation
Bibliography