Finger bridge joint
Finger bridge joint
Finger bridge joint
Finger bridge joint
Finger bridge joint

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Displacement: 0-360mm

Accessories: Finger steel plate, Stainless sliding plate, Rubber waterproof, Anchors & Bolts.


Finger type bridge expansion joint contains steel edge profiles, featuring connection surfaces for deck waterproofing membranes, which are connected to the bridge deck by anchor loops. Finger Joints are cantilevered or simply supported steel tooth expansion joints. They are composed of pairs of independent elements with parallel teeth provided in lengths from 3 feet to full roadway widths. Finger Joints are used to provide support to vehicles as they travel across bridge expansion joint openings. They create an effective seal at the joint opening, preventing water and deleterious materials from contacting the steel support girders and bearings below.

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Features


1. Waterproof, dustproof, shockproof, used in all kinds of bridge structures, large expansion amount.

2. A smooth transition for vehicular traffic resulting in low noise

3. Ease of maintenance with a small crew and minimal lane closure time

4. Can be supplied with integral self-cleaning closed cell foam seals or a durable neoprene trough to channel water away from the structure

5. Be replaced without the need for excavation of the anchorage system

6. Can be supplied in three foot lengths to permit ease of installation without the need for heavy lifting equipment

7. Can be fabricated to meet bridge deck skews

8. Lasts the life of the bridge deck under normal circumstances

9. Can be supplied with post tensioned anchors into concrete headers, cast into concrete blockouts, or bolted to existing steel members 


Specifications



Type

C

h

Anchor bolt

b

H

Surface layer height

SF-80

80

28

M18x180

740

33

120

SF-100

100

28

M18x180

800

33

120

SF-120

120

30

M18x180

860

35

120

SF-140

140

30

M18x180

920

35

120

SF-160

160

30

M18x180

980

35

120

SF-180

180

32

M20x200

1080

37

120

SF-200

200

32

M20x200

1140

37

150

SF-220

220

32

M20x200

1200

37

150

SF-240

240

34

M22x220

1260

39

150

SF-260

260

34

M22x220

1320

39

150

SF-280

280

34

M22x220

1380

39

150

SF-300

300

36

M24x240

1480

41

150

SF-320

320

36

M24x240

1540

41

150

SF-340

340

38

M24x240

1600

43

150

SF-360

360

38

M24x240

1660

43

150




Applications


Sliding finger type bridge expansion joints are suitable for use under heavy traffic, and mainly applied to the device with 20-320mm expansion. Their special doweled connection system makes them particularly useful where the impact on the main structure should be minimised. The system is designed on a modular basis, allowing individual finger plates to be quickly replaced as required. Finger type joints are still specified on many bridge projects due to proven long-term structural performance. These joint systems are also convenient to install on bridge rehabilitation projects requiring a shallow joint depth and/or staged construction.


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