Non-reinforced bearings can be used in many construction and civil engineering applications to support concrete and steel structures, and where a simple, low-cost rubber separation strip is capable of carrying compressive loads, while at the same time providing translational movement and rotational capacity. Plain pad bearings have a large and varied range of possible applications though these bearings are more typically used in prefabricated structures.
Characteristics:
Non-reinforced elastomer bearings ensure a controlled load distribution and enable stress-free horizontal movements as well as twisting in supports.
They prevent excessive load eccentricities and edge compression.
At the same time, unevenness and deviations from parallelism in bedding surfaces are compensated.
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Laminated bearing with PTFE sheet bonded on the elastomer:a virgin PTFE layer is bonded to the elastomer to reduce the friction coefficient with the stainless steel welded to the top steel plate. designed as a free sliding bearing in longitudinal and transversal directions(type DF) Fitted as a fixed bearing in longitudinal or transversal directions by means of steel guides (Type DG)
Tetrafluoro plate type rubber bearing suits to bridges with large span,several spans in continuous,with simply supported beam and continuous plates structure,and large displacement.It can still used as the sliding block in pushing of continuous beam and cross sliding of T-shaped beam.The applications of rectangular and circular tetrafluoro plate type rubber bearing are the same with rectangular and circular general plate type rubber bearing,separately.
Dacheng laminated bearings with simple reinforcement are made up of multiple elastomer layers separated by reinforcing steel plates ,sulfurized and moulded together.can be manufactured in a rectangular or circular shape to meet individual engineering requirements.
General laminated bearings suits to bridges with span less than 30m and small displacement.Different flat shape suits to different bridge span structures :orthogonal bridges adopt rectangular bearing;curvilinear bridges,oblique crossing bridges and cylindrical pier bridges adopt circular bearing.
Dacheng Laminated bearing with external steel plates can be vulcanised directly onto elastomeric bearings with simple reinforcement during production, so securing the bearings to the structure with mechanical fastenings and reducing the risk of slippage. Dacheng can produce various types of bearings depending on the fastening method specified Elastomeric bearings with two external plates and holes or threaded holes for plain anchor bars, for use on in situ cast concrete structures. use on metal structures, or as an anti-lift device; in this latter case, suitable anchor bars must be fitted to the bearings for anchoring purposes.
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