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Strip Seal Expansion Joints Accommodate Up to 80 mm Movement
Strip seal expansion joints for movements of up to 80 mm are expansion joints made of a single set of structural steel, rubber sealing strips and dowel rods. According to the cross-sectional shape, they are divided into 5 types, including GQF-C, GQF-F, GQF-E, GQF-Z and GQF-RG. Being fully anchored within the depth of the road surfacing, strip seal expansion joints can prevent roads from cracking caused by climatic change.
In order to meet the requirements of the bridge deformation, strip seal expansion joints are usually set at each end of the bridge, between ends of the beam and abutment or on the hinge joints of the bridge. They are applied with rubber noise weaken board which can help to increase movement and reduce noise from over-passing traffic by up to 80%.
Structure
Strip seal expansion joints are consisted of countersunk screws, edge beam, rubber strip seal and dowel rods.
This is a diagram of the structure of GQF-F type single gap joint.
SGJ-1: All parts of the strip seal expansion joints working together can make an excellent system.
Specification
Rubber material: chloroprene rubber (CR) or natural rubber (NR).
Head Type: Straight or bending.
Cross-sectional shape: GQF-C, GQF-F, GQF-E, GQF-Z and GQF-RG.
This is the strip seal expansion joints with straight head.
SGJ-2: Strip seal expansion joints with straight headThis is the strip seal expansion joints with up head.
SGJ-3: Strip seal expansion joints with up head
The cross-sectional shape of single gap joint is C type.
SGJ-4: GQF-C strip seal expansion jointsThe cross-sectional shape of single gap joint is F type.
SGJ-5: GQF-F strip seal expansion jointsThe cross-sectional shape of single gap joint is E type.
SGJ-6: GQF-E strip seal expansion joints
This is a Z shaped strip seal expansion joints.
SGJ-7: GQF-G strip seal expansion jointsThis is a RG shaped strip seal expansion joints.
SGJ-8: GQF-RG strip seal expansion joints
Table 1: Specification of Strip Seal Expansion Joints
Item Displacement
(mm) Expansion resistance
(kN/m)
Horizontal displacement Vertical displacement Horizontal shear displacement Compression Longitudinal shearing
GQF-C30 30 ± 12 ± 20 ≤ 4 ≤ 6
GQF-C50 50
GQF-C60 60
GQF-C80 80
GQF-F30 30 ± 12 ± 20 ≤ 4 ≤ 6
GQF-F50 50
GQF-F60 60
GQF-F80 80
GQF-E80 80 ± 12 ± 20 ≤ 4 ≤ 6
GQF-Z80 80 ± 12 ± 20 ≤ 4 ≤ 6
Note: Strip seal expansion joints in other dimensions can be manufactured upon your request.
Features
Strip seal expansion joints are retractable and solid on both directions parallel and perpendicular to the bridge axis to ensure vehicles runs smoothly and no noise.
Strip seal expansion joints can prevent rainwater permeation and dirt clogging.
Strip seal expansion joints are simple and easy to install, check, maintain and clean.
High strength, can withstand the weight of vehicles and pedestrians.
This is a single gap joint.
SGJ-9: Strip seal expansion joints are retractable through the middle slotThis is a single gap joint with simple structure.
SGJ-10: Simple single gap joint is easy to install
Application
Strip seal expansion joints are suitable for kinds of bridges which are curved, slope, skew and wide. They can also perform well on both new-built bridges and bridges have been built, both asphalt and concrete bridge surface. It also can be used in the highway.
Having a limited depth of the structure and being able to be installed quickly, strip seal expansion joints are extremely well-positioned to replace the damaged one in a restoration project.
A worker is installing the strip seal expansion joints in the bridge.
SGJ-11: Strip seal expansion joints installed in end of bridgeThe side of bridge is being built with strip seal expansion joints.
SGJ-12: Strip seal expansion joints used in end of expressway
This is a bridge has been completed with strip seal expansion joints.
SGJ-13: Strip seal expansion joints are used in connection of bridgesMany cars are passing through on highway that is constructed with strip seal expansion joints.
SGJ-14: Strip seal expansion joints are installed in highway
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