Introduction of Rubber Bearing for Bridge:
The Rubber Bearing for Bridge also known as elastomeric bearings, are a critical component in modern bridge design. They are placed between the bridge superstructure (the deck and supporting beams) and the substructure (the piers and abutments) to allow for controlled movement and flexibility.
Rubber Bearing for Bridge are often used in applications where the bridge is expected to experience significant thermal expansion, seismic activity, or other types of movement. The curved shape and rotational capacity make them well-suited to handle these demanding bridge loading conditions.
| Selection parameters of rectangular plate rubber bearing specification series |
| Item | Plane size
la×lb(mm) | Maximum bearing pressure Rck(kN) | Total thickness of support t(mm) | Maximum displacement (mm) | Allowable corner tangent value tanθ (θ is rad) |
| Regardless of braking force Δt1 | Gauge braking force Δt2 | Warm areas | Cold areas | Coldest areas |
| 1 | 350×400 | 1326 | 69 | 22 | 30.8 | 0.0081 | 0.0069 | 0.0058 |
| 2 | 350×450 | 1496 | 69 | 22 | 30.8 | 0.0074 | 0.0064 | 0.0053 |
| 3 | 400×400 | 1251 | 69 | 22 | 30.8 | 0.0063 | 0.0054 | 0.005 |
| 4 | 400×450 | 1716 | 69 | 22 | 30.8 | 0.0057 | 0.005 | - |
| 5 | 450×450 | 1936 | 69 | 22 | 30.8 | 0.005 | - | - |
The bearing capacity of Rubber Bearing for Bridge depends on the following three situations:
(1) The rubber itself is crushed or cut;
(2) the compression deformation and shear deformation of rubber exceed the allowable use;
(3) When the support (concrete, steel plate or other) is pulled off by the outward reverse horizontal shear force of rubber or the contact surface of the support and rubber slips off each other.
Classification of Rubber Bearing for Bridges: round board type rectangular plate type
Scope of application: ordinary bridge rubber bearing is suitable for the span of less than 30 meters, small displacement of the bridge. Different plane shapes are suitable for different bridge spans, rectangular support for orthobridge; curved, diagonal and cylindrical piers.
At the same time, the sewage and grease should be cleaned, and the water in the pier and cap should be removed in time. When the silt or silicone grease is dried between the contact surface of the PTFE slide and the stainless steel plate, it should be cleaned up in time and new silicone grease should be injected.
In the daily inspection and maintenance of the bridge rubber bearing, should check whether the various parts of the support are kept complete and clean, and the garbage, snow and ice around the support should be eliminated in time to ensure the normal operation of the support.
Evercross Steel Bridges Overview :
| EVERCROSS STEEL BRIDGE SPECIFICATION |
EVERCROSS
STEEL BRIDGE | Bailey bridge(Compact-200, Compact-100, LSB, PB100, China-321,BSB)
Modular bridge( GWD, Delta, 450-type,etc),
Truss Bridge,Warren bridge,
Arch bridge, Plate bridge,Beam bridge,Box girder bridge,
Suspension bridge,Cable-stayed bridge,
Floating bridge,etc |
| DESIGN SPANS | 10M TO 300M Single span |
| CARRIAGE WAY | SINGLE LANE, DOUBLE LANES,MULTILANE,WALKWAY,ETC |
| LOADING CAPACITY | AASHTO HL93.HS15-44,HS20-44,HS25-44,
BS5400 HA+20HB,HA+30HB,
AS5100 Truck-T44,
IRC 70R Class A/B,
NATO STANAG MLC80/MLC110.
Truck-60T,Trailer-80/100Ton,etc |
| STEEL GRADE | EN10025 S355JR S355J0/EN10219 S460J0/EN10113 S460N/BS4360 Grade 55C
AS/NZS3678/3679/1163/Grade 350,
ASTM A572/A572M GR50/GR65
GB1591 GB355B/C/D/460C,etc |
| CERTIFICATES | ISO9001, ISO14001,ISO45001,EN1090,CIDB,COC,PVOC,SONCAP,etc |
| WELDING | AWS D1.1/AWS D1.5
AS/NZS 1554 or equivalent |
| BOLTS | ISO898,AS/NZS1252,BS3692 or equivalent |
| GALVANIZATION CODE | ISO1461
AS/NZS 4680
ASTM-A123,
BS1706
or equivalent
|
Key functions of Rubber Bearing for Bridge:
Accommodating thermal expansion and contraction
Supporting vertical loads
The rubber used in these bearings is typically neoprene or natural rubber, which provides the necessary flexibility, strength, and durability. Rubber bearings can be designed in various shapes, sizes, and configurations to match the specific requirements of each bridge project.
Product Tags:
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Rubber Bearing For Building Isolator Bridge Elastomeric Rubber Isolation Images
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