Bridge Movement Profiles and Bearings & Slab Joint
وعاء محامل للجسور Pot Bearings
Technical Specifications
Pot bearings are designed to carry
combinations of the vertical loads, horizontal loads, longitudinal and
transversal movements and rotations. These type of bearings can carry very high
loads which are over 50.000 kN A completely encased natural rubber pad is
positioned in a steel pot. Under high pressure the pad behaves like a liquid.
The elasticity of the rubber allows tilting movement (rotation) of the piston
in the horizontal axis. Depending on whether the bearing is fixed, guided
sliding or a free sliding, pot bearings accommodate vertical loads and
corresponding horizontal forces as well as movements in longitudinal or
transversal directions.
Fixed Type, These bearings consist of a pot / piston assembly within
which an elastomeric disc is encapsulated and fitted with an anti-extrusion
sealing device. Under load this encapsulated elastomeric disc acts in a similar
manner to a nuncompress-ible confined fluid, enabling the pot and piston to
rotate relative to each other. These bearings enable rotation in any direction
while at the structure is constrained horizontally. The function of the pot and
piston parts are for fixing and securing the bearings to the bridge structure.
Free sliding type, Identical in construction to the fixed bearings,
these multi-directional devices are fitted with a virgin PTFE sheet in contact
with an austenitic steelplate, enabling the bearing to slide in all directions.
Guided Sliding type, Guided Sliding devices are identical in
construction to free sliding bearings but are also fitted with one or more
guides to limit the bearings movement to only one direction.
محامل مرنة , محامل كروية , وعاء محامل , محامل الجسر, العزلات الزلزالية
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