CEN/TC 167/WG 1 - Revision of EN 1337

This Part of this European Standard deals with the requirements for the design and manufacture of Guide Bearings and Restraint Bearings.
Guide Bearings and Restraint Bearings are not intended to transmit vertical loads but they may be combined in one unit with bearings in accordance. EN 1337-1:2000, Table 1.
NOTE 1   Guide Bearings and Restraint Bearings are shown in EN 1337-1:2000, Table 1, No. 8.1 and 8.2. For combined bearings see EN 1337-1:2000, Table 1, bearing Nos. 1.2, 1.3, 1.6, 1.7, 1.8., 3.1, 4.1, 4.2, 4.3, 7.1, 7.3, and 7.4 with restraints and Nos. 1.5, 1.7, 2.2, 3.3, 3.4, 5.2, 6.2 and 7.3 with guides.
NOTE 2   Examples of combined bearings are given in Annex B.
The minimum operating temperature depends on the materials’ properties used at the required temperature and the limitations given in the referenced parts of this European Standard.
NOTE 3   In certain circumstances the bearings described in this part of this European Standard may be required to operate in a plane inclined to the horizontal. In such circumstances the terms "vertical" and "horizontal" should be interpreted appropriately.

This European Standard applies to the inspection and main-tenance of bearings designed in accord-ance with EN 1337-1, when used in the construction of bridges or struc-tures requiring similar bearing sys-tems. It presupposes the existence of guidelines for the regular inspection of the whole structure during its service life.
It may also be used as appropriate for the inspection and maintenance of bearings designed and/or installed before the intro-duction of this European Standard.
This European Standard specifies the aspects of each type of bearing that shall be inspected and recorded. It does not specify permissible values. For these reference shall be made to the relevant parts of this European Standard and to the drawings and design calculations for the bearing and the structure.
NOTE 1   Attention is drawn to the par-ticular necess-ity for regular inspection and main-ten-ance of bearings as, with-out such inspection and mainten-ance, premature failure may occur.
NOTE 2   National regulations may exist on the subjects covered by this European Standard and, therefore, they prevail on it.

This European Standard is applicable to structural bearings, whether used in bridges or in other structures. This European Standard does not cover: a) bearings that transmit moments as a primary function; b) bearings that resist uplift; c) bearings for moving bridges; d) concrete hinges; e) seismic devices. Although it is not intended to regulate temporary bearings, this standard may be used as a guide in this case (temporary bearings are bearings used during construction or repair and maintenance of structures).

This standard is applicable to the transport, storage and installation of bearings used in the construction of bridges or of structures requireing comparable bearing systems.

This document specifies rules for the design, testing and manufacture of fixed and sliding pot bearings.
It is applicable to pot bearings:
-   with elastomeric pads made from natural rubber (NR) or chloroprene rubber (CR) up to 1 500 mm diameter,
-   with pot and piston made from ferrous materials,
-   with seals tested for different accumulated slide paths due to rotations between piston and pot of a) 500 m, b) 1 000 m or c) 2 000 m,
-   with seals made from specific austenitic steel, brass, POM or carbon filled PTFE,
-   subjected to operating temperature ranges between -25 °C and +50 °C or -40 °C and +50 °C,
-   subjected to operating temperatures up to +70 °C for repeated periods of less than 8 h.
This document will be used in conjunction with prEN 1337-1:2018 and other relevant parts of the prEN 1337 series.

This document specifies rules for the design, testing and manufacture of guide bearings and restraint bearings. It is applicable to bearings, which transmit loads in x- and y-plane according to prEN 1337-1:2018 only.
This document will be used in conjunction with the relevant parts of the prEN 1337 series.

This document specifies rules for the design, testing and manufacture of sliding elements which are not structural bearings but only parts of them for combination with structural bearings as defined in other parts of this European Standard.
It is applicable to:
-   flat and curved sliding elements made of polytetrafluoroethylene (PTFE), lubricant and austenitic steel or chromium plated surfaces or anodized aluminium,
-   sliding elements for guides made of PTFE or composite bearing materials, lubricant and austenitic steel,
-   PTFE surfaces with a circumscribing circle diameter of single or multiple PTFE sheets larger than 75 mm and smaller than 1 500 mm,
-   PTFE surface temperatures between –35 °C and +50 °C and
-   steel to steel sliding surfaces.
Additional requirements for curved sliding elements used in spherical and cylindrical PTFE bearings are covered by prEN 1337-7:2018.
Sliding elements for use as temporary devices during construction, for example during launching of the superstructure, and sliding elements not permanently in contact, other than guides, are not covered within this document, because the required performance and conditions may deviate considerably.
This document will be used in conjunction with the relevant parts of this standard series.

This document specifies rules for the design, manufacture and testing and of spherical and cylindrical sliding PTFE bearings.
It is applicable to spherical and cylindrical sliding bearings with an included angle up to 60° for spherical and 75° for cylindrical sliding bearings.
This document will be used in conjunction with the relevant parts of this standard series.

This document specifies rules for the design, testing and manufacture of single and multiple roller bearings in which the roller axis is horizontal and movements are perpendicular to the roller axis.
It is applicable to roller bearings with rollers and roller plates made from carbon steel or cast steel or stainless steel.
Roller bearings can be combined with sliding elements, guides and bearings as specified in other parts of this European Standard.
This document is applicable to bearings with monolithic rollers and roller plates not subjected to surface hardening, included through welding.
This document will be used in conjunction with prEN 1337-1:2018 and other relevant parts of the prEN 1337 series.

This document specifies rules for the design, testing and manufacture of point and line rocker bearings.
It is applicable to rocker bearings manufactured from carbon steel or cast steel or cast iron or stainless steel.
This document will be used in conjunction with the relevant parts of this standard series.

This document specifies general rules for design, manufacturing, protection, transport, storage, installation, and inspection of structural bearings for use in bridges and other structures, e.g. buildings.
This document does not give rules for:
-   bearings subjected to uplift forces;
-   bearings for the specific moving function of moveable bridges (for example bascule bridges, lift bridges, etc.);
-   concrete hinges;
-   levelling pads.
It can be used for guidance in the case of temporary bearings and the principles can be applied to the design and manufacture of other types of structural bearings not included in this European Standard.
If bearings are used as or as part of anti-seismic devices with the aim of modifying the dynamic response of the structure, EN 15129 also applies.
This document will be used in conjunction with the other relevant parts of the prEN 1337 series.

This document specifies rules for the design, testing and manufacture of laminated elastomeric bearings, elastomeric plain pad bearings, elastomeric strip bearings and sliding elastomeric bearings.
It is applicable to laminated and plain pad bearings:
-   of rectangular and circular shape in plan with a rectangular cross-section, with dimensions in plan up to 1 200 mm,
-   subjected to temperatures between -25 °C and +50 °C or between -40 °C and +50 °C,
-   subjected to temperatures below -25 °C due to climate changes,
-   subjected to temperatures up to 70 °C for repeated periods of less than 8 h.
This document will be used in conjunction with prEN 1337-1:2018 and other relevant parts of the EN 1337 series.

This part of this European Standard specifies general rules for design, manufacturing, protection, transport, storage, installation, and inspection of structural bearings for use in bridges and other structures, e.g. buildings.
This European Standard does not give rules for
-   bearings subjected to uplift;
-   bearings for the specific moving function of moveable bridges (for example bascule bridges, lift bridges etc);
-   concrete hinges.
It may be used for guidance in the case of temporary bearings and the principles may be applied to the design and manufacture of other types of structural bearings not included in this European Standard.
If bearings are used as or as part of anti-seismic devices with the aim of modifying the dynamic response of the structure, EN 15129 also applies.
NOTE   The informative Annex H may give background information.