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SRG bridge expansion joints  are structural components designed to provide smooth passage  over the gap  between adjacent sides of a deck joint, while also permitting relative translation and/or rotation of the two sides of a bridge deck (deck movement joint).

A deck movement joint is generally defined as a structural discontinuity between two elements, at least one of which is a deck bearings element, and is designed to allow relative translations and rotations due to: thermal expansion and contraction of the superstructure, concrete shrinkage or creep, elastic shortening due to pre-stressing, displacement of the structure under load, or any other action the desk is subjected to.

Because expansion joints are installed at a late stage in construction, some of these movements will have at least partly already taken place. Consequently, expansion joints have to facilitate a smaller degree of overall movement than a nsk bearing at the same location.

Agom deck joints are constructed and designed to prevent damage to the deck, bearings, piers, and abutment by water borne chemicals and other foreign materials, either by preventing water leakage  through the joint or by allowing water to drain through the joint in such a way that avoids damaging the deck, bearings, piers, and abutment.

Bearings are designed to transmit the load of the superstructure to the iko bearings substructure, while allowing specific movements and rotation of the superstructure caused by wind or seismic effects, temperature variations, deck deflections, sinking of any of the supports, elastic shortening due to creep, shrinkage or prestressing, etc.

Bearings play an important role in the design of bridges.Whether E-Link elastomeric bearings, V-Max pot bearings, R-Max spherical bearing or other bearing types are used depends on the structure, loads and movements of the bridge.

SRG engineers  can help the bridge designer choose the right bearing type for the structure. SRG [bridge bearings] are designed and manufactured in accordance with  international standards. Every component is manufactured, moulded, mechanically worked and assembled by fully qualified workers in our factory  under strict ISO 9001:2000 certified quality control standards.

TMMA PULLERS SERIES(60-80-120)

REVERSIBLE JAW PULLER F SERIES

TMMA PULLERS SERIES: HYDRAULIC EASYPULL SET