H-MAX BEARINGS AGOM INTERNATIONAL SRL Via Mesero, 12 – 20010 Ossona (MI) – Italy - www.agom.it PH.: +39 02 9029111 – FAX: +39 02 9010201 – [email protected]

H-Max bearings Agom H-Max bearings are designed to carry horizontal loads, allow longitudinal or transversal movements and rotations and they are used in steel and concrete road and railway bridges. Depending on whether the bearing is fixed or guided sliding, Agom H-Max bearings accommodate horizontal forces, as well as movements in longitudinal or transversal directions. Agom H-Max bearings can carry very high horizontal loads and in case of special design they can take also uplift vertical loads typically due to overturning effects due to high horizontal transversal Fixed H-Max HLBF These bearings...

International standards Agom H-Max bearings are designed and manufactured in accordance with the requirements of a wide range of international standards (European EN1337.8, British BS 5400, Italian CNR 10018, German DIN 4141, French SETRA B.T.4. and American AASHTO). Every single component is mechanically worked and assembled by fully qualified and trained workers at the Agom factory under strict ISO 9001:2008 accredited quality control standards. Quality of the materials Austenitic steel sheet The austenitic steel used for sliding surfaces is X5CrNiMo17-12-2 in accordance with EN 10088-2 1.4401...

Comprehensive Labelling All the bearings are provided with a metal label detailing the proprieties of the bearings: • • • • • bearing type maximum horizontal loads rotation order number date of manufacture The top face of the bearing gives information on the type of the bearing, the direction of the axis of the bridge, the presetting (if any), the position. Agom H-Max Bearings accessories Dust protection The dust protection around the sliding plate ensure the cleaning of the sliding surfaces to minimize the friction during sliding and guarantee the durability of the sliding material. Corrosion...

Guidelines for the design of a structure with Agom H-Max bearings In this section a simple guideline for the design of a structure equipped with Agom bearing is presented, the design procedure is summarized in the following steps: 1. Selection of the structure static link scheme (fixed and movable support bearings) Calculation of the loads (horizontal) on the bearings according to the fixity scheme Calculation of the bearing rotations and movements Insert all the bearing design data in to the bearing design table (example table B.1 of the EN1337-1 code attached at the end of the document) Using...

DESIGN OF A STRUCTURE WITH H-Max BEARINGS SELECTION OF THE STRUCTURE STATIC LINK SCHEME (FIXED AND MOVABLE BEARINGS) CALCULATION OF THE HORIZONTAL LOADS ON THE BEARINGS ACCORDING TO THE SELECTED FIXITY SCHEME CALCULATION OF THE BEARINGS ROTATIONS AND MOVEMENTS FILL IN THE BEARINGS DESIGN TABLE DATA (EXAMPLE TABLE B.1 OF EN1337-1 CODE) USE THE H-MAX BEARING DRAWINGS IUSSUED BY AGOM TO DESGIN THE STRCTURE INFERFACE UNDER AND ABOVE THE BEARING IF NECESSARY, DESIGN THE SLOPED WEDGE TO BE PLACED BETWEEN STRUCTURE AND BEARING

Advantages of using Agom H-Max The Agom H-Max bearings fulfil the following requirements: Transmit the horizontal loads with in practise no limitation of the design load NO LIMITS HORIZONTAL LOADS Allow rotation as per a spherical hinge. Standard design is for rotation of ±0.01 rad or ±0.02 rad No limitation for of horizontal displacement Suitable for all structures steel and concrete bridges and buildings High durability and easy maintenance Since each device is specifically designed for each project, it can be suitably NO LIMITS HORIZONTAL DISPLACEMENT HIGH DURABILITY NO MAINTAINANCE adapted...

Handling and storage installation and maintenance This manual gives the main list of the most important operations to correctly install the AGOM bridge bearings. Under control of the Engineer who designed the bridge, bearings must be installed by expert workers, with precision to meet the bridge and bearing design criteria. Inappropriate handling, storage and installation will have an adverse effect on the bearing life, usually estimated in more than 50 years providing right maintenance. AGOM structural bearings are manufactured to close tolerances by skilled technicians working in clean conditions....

Installation The installation procedure of the bearings generally depends on the structure type. The main steps are: 1. Check before installation. In order to avoid placements mistakes of the bearings, all the technical and description data, printed on the label, shall be checked and compared with the ones showed in the shop drawings. 2. Casting of the substructures. Substructures shall reach a level about 30 mm lower then the final level. In order to install the bearings suitable voids spaces must be provided to insert the bearing lower anchor bars. An easy way to leave the voids is to use corrugated...

4. Casting of the superstructure – cast-in-situ superstructure Superstructure formwork must be arranged around the bearing upper steel plate and sealed with adhesive tape or foam to avoid concrete leakage during casting. The formwork must be arranged in a suitable way to avoid embedding of the bearing upper plate into concrete to avoid bearing embedding compromising the eventual future replacement. The formwork must be supported at the design level during concrete pouring. Formwork placing and concrete pouring When the concrete has reached adequate resistance the supports and formwork have to...

Removal of transport devices The transport devices, normally painted red should only be removed when the bearing is properly installed and ready for operation. Any tapped holes exposed after removal of transportation brackets etc (coloured red) should be sealed with self-vulcanizing silicon sealant. Maintenance of Bearings The service life of a bearing is usually exstimated in more than 50 years. The most important thing to assure such a long life time is a correct and careful maintenance of the bearing, that is usually installed in a severe environment. The requested bearing inspection and maintenance...