Bentonite Waterstop
Vulcanized rubber hydrophilic waterstop
Rubber Waterstop
EPDM Tunnel Segment Gaskets
Concrete canvas
Two-component polysulfide sealant
Concrete Cloth (GCCM)
Elastomeric bridge joint
Finger type bridge joint
Modular expansion joint
Asphaltic joint plug
Laminated bearing pads
Elastomeric Neoprene bearing pad
Address: 2-2911, Taiyi Shangcheng, Taocheng Dist., Hengshui, Hebei, China (Mainland)
Tel: 86-0318-6666807
Mobile Phone: 86-18831898808
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E-mail: hongruiboya@shuanglinrubber.com
Laminated bearing pad is also called Elastomeric Laminated bearing, which is vulcanized by rubber layers and steel sheets.
This type of bearings is highly resistant against vibration and the shocking from the moving load to the span and pier of the bridge. It can bear high vertical load and shift the pressure reliably from the superstructure to the piers. Its elasticity is high enough to suit the rotation of the beam end to fit horizontal displacement.
Rectangle Shape Round Shape
Fixed type Movable type
Other shapes in EN1337-3
Physical and mechanical properties of elastomer:
|
Characteristics |
Requirements |
|||
|
CR |
NR |
EPDM |
||
|
Hardness |
60±5 |
60±5 |
60±5 |
|
|
Tensile strength / MPa |
17.0 |
18.0 |
15.0 |
|
|
Elongation at break / % |
400 |
450 |
350 |
|
|
Brittle temperature ℃ |
-40 |
-50 |
-60 |
|
|
Compression set % |
15 |
30 |
25 |
|
|
Ozone resistance Elongation: 20% Temperature: 40℃ |
100x10 -8
|
25x10 -8
|
100x10 -8
|
|
|
No crack |
No crack |
No crack |
||
|
Accelerated aging |
Condition ℃ x h |
100x70 |
70x168 |
100x70 |
|
Elongation Strength change rate % ≤ |
15 |
15 |
15 |
|
|
Tensile Strength change rate % ≤ |
40 |
20 |
40 |
|
|
Hardness change |
0-10 |
-5-10 |
0-10 |
|
|
Bond strength of elastomer and steel |
10 |
10 |
10 |
|
|
Bond strength of elastomer and PTFE |
7 |
7 |
7 |
|
Performance requirements of Complete bearings:
|
Item |
Index | |
|
Ultimate compression strength Rd /MPa |
≥70 |
|
|
Compression modulus of elasticity E1/ MPa |
E±Ex30% |
|
|
Shear modulus of elasticity G1 / MPa |
G±Gx15% |
|
|
Shear modulus of elasticity after aging G2 / MPa |
G1±G1x15% |
|
|
Tangent angle tan A |
Concrete bridge |
≥1/300 |
|
Steel bridge |
≥1/500 |
|
|
Friction coefficient for elastomer and steel μ with silicone grease |
≤0.03 |
|
Plate type bearings compression modulus of elasticity E
And bearing form factor S should be calculated as : E=5.4GS 2
E- plate bearing compression modulus, MPa
G - plate bearing shear modulus, MPa
S - plate bearing form factor
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