Technical guide - Laminated elastomeric bearings
Use on bridges, viaducts and similar structures
This technical guide is mainly intended for bridge designers. The contents should enable them to design laminated elastomeric bearings with a view to using them on bridges, viaducts and similar structures.
This technical guide is mainly intended for bridge designers. The contents should enable them to design laminated elastomeric bearings with a view to using them on bridges, viaducts and similar structures.
The documents principally includes the following:
* A brief description of the various types of laminated elastomeric bearings and any specific related equipment,
* The main regulations and standards,
* The design criteria based on draft regulations drawn up by the CEN (European Committee for Standardization),
* The principle of controls for the CE marking,
* A design methodology for a bridge project with application examples.
Lastly, it is supplemented by a series of appendixes on the design of this type of bearing in seismic zones, on the durability of laminated elastomeric bearings with sliding planes and examples of clauses to be included in performance specifications.
Contents
Foreword
Chapter 1 - Introduction
1.1 – Why replace the 2000 guide?
1.2 – Scope and content
1.3 – Application of the standard NF EN 1337-3 in the French national context
1.4 – Scope
1.5 – Notations and symbols
Chapter 2 - Composition and description
2.1 – General principles of composition
2.2 – Component parts
2.3 – Manufacturing methods
Chapter 3 – Behaviour and dimensioning
3.1 - Introduction
3.2 – The characteristics of bearings
3.3 – Dimensioning bearings
3.4 – Dimensioning verifications
Chapter 4 – Design principles for a structure with bearings
4.1 – General points – The regulatory context
4.2 - Dimensioning
4.3 – Calculating horizontal force on support heads on a structure with standard bearings
4.4 - Calculating horizontal force on a structure with sliding bearings
Chapter 5 - Controls
5.1 – General principles
5.2 – Production controls prior to CE marking
5.3 – Controls on reception
5.4 – Controls on installation
5.5 – Controls of behaviour in service
Chapter 6 – The pre-dimensioning and verification program
Appendix 1 – Calculations for laminated elastomeric bearings for use in seismic zones
A1-1 – Regulatory framework
A1-2 – Design combinations and direction accumulation
A1-3 - Dynamic calculation model
A1-4 – Using a behaviour factor
A1-5 - Recommendations
A1-6 – Further construction measures
Appendix 2 – The durability of laminated elastomeric bearings with a sliding plane
A2-1 – The characteristic quantity of the functioning of a sliding bearing
A2-2 – Measures to be taken at the design stage
A2-3 – Measures to be taken at the manufacturing stage
A2-4 – Measures to be taken as part of the monitoring process
A2-5 - Conclusion
Appendix 3 - Table of dimensions
Appendix 4 – Assisitance with drafting Particular Technical Clauses (CCTP).
A4.1 - Examples of clauses to be included in the chapter "quality of materials"
A4.2 - Examples of clauses to be included in the chapter "design principle”
A4.3 - Examples of clauses to be included in the chapter "implementation"
Bibliography
General documents
Standards
Bibliography specific to Appendix 1
