NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 19203 : 2018 Hot-dip galvanized and zinc-aluminium coated high tensile steel wire for bridge cables — Specifications (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

It is applicable to elastomeric seismic isolators used to provide bridges with protection from earthquake damage. The isolators covered consist of alternate elastomeric layers and reinforcing steel plates, which are placed between a superstructure and its substructure to provide both flexibility for decoupling structural systems from ground motion and damping capability to reduce displacement at the isolation interface and the transmission of energy from the ground into the structure at the isolation frequency.

It is applicable to elastomeric seismic isolators used to provide bridges with protection from earthquake damage. The isolators covered consist of alternate elastomeric layers and reinforcing steel plates which are placed between a superstructure and its substructure to provide both flexibility for decoupling structural systems from ground motion and damping capability to reduce displacement at the isolation interface and the transmission of energy from the ground into the structure at the isolation frequency.

Designs and details for new road bridges address structural integrity by considering the following:

—    the use of continuity and redundancy to provide one or more alternate paths;

—    structural members and bearing seat widths that are resistant to damage or instability; and

—    external protection systems to minimize the effects of reasonably conceived severe loads.

Designs and details for new road bridges address structural integrity by considering the following:

—    the use of continuity and redundancy to provide one or more alternate paths;

—    structural members and bearing seat widths that are resistant to damage or instability; and

—    external protection systems to minimize the effects of reasonably conceived severe loads.

— the objectives of the dynamic tests,

— the techniques for data analysis and system identification,

— the modelling of the bridge, and

— evaluation of the measured data.

The dynamic tests considered in ISO 18649:2004 do not replace static tests.

ISO 18649:2004 gives guidance on the assessment of measurements carried out over the life cycle of the bridge. The stages of the life cycle that are considered are

— during construction and prior to commissioning,

— during commissioning trials,

— during specified periods throughout the life of the bridge, and

— immediately prior to decommissioning the bridge.

ISO 18649:2004 is applicable to road, rail and pedestrian bridges and viaducts (both during construction and operation) and also to other works, provided that they justify its application. The application of this International Standard to special structures (cable-stayed or suspension bridges) requires specific tests that take into account the particular characteristics of the work.

ISO 14963:2003 provides general criteria for dynamic tests. These can supply information on the dynamic behaviour of a structure that can serve as a basis for condition monitoring or system identification. The dynamic tests detailed in ISO 14963:2003 do not replace static tests.

The tests may seek to define all of the dynamic characteristics of each mode of vibration examined (i.e. frequency, stiffness, mode shape and damping) and their non-linear variation with amplitude of motion.

ISO 14963:2003 is applicable to road, rail and pedestrian bridges and viaducts (both during construction and operation) and also to other works (or types of works), provided that their particular structure justifies its application.

The application of ISO 14963:2003 to special structures (stayed or suspension bridges) requires specific tests which take into account the particular characteristics of the work.