The added value of Freyssinet solutions
- T-joint for small budget and small stroke < 40 mm
- Under ballast joint for medium stroke < 150mm
- TW joint for medium stroke < 150mm
- Ballast retaining joint for stroke > 150mm
- Height-adjustable joint for ballast retaining joint
- Adjustable joint opening for under ballast and ballast retaining joints
- Simple and robust design
- Metal parts protected by galvanization or metallisation (except for TW elastomeric joint)
Tailor-made design and manufacturing to cover all uses and the most extreme operating conditions.
Allows the bridge structure to be jacked up without dismantling.
Project management by Freyssinet including design, technical support, manufacturing, testing, implementation, on-site adjustments and quality management.
Our range of expansion joints for railway bridges
T-joint
The T-joint is a supported joint for gaps < 150mm and stroke of +/-20mm.
It consists of a steel plate in contact with the deck on one side and the bridge abutment on the other side with a perpendicular (T-shaped) welding plate. The plate can also be equipped with expansion anchors.
It is installed at a fixed point on the deck, with a length appropriate to the gap to be bridged.
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Long design life, robustness
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Various corrosion protection options
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Easy to install, maintenance free
TW joint (3 types)
The TW joint, used as a sub-ballast joint, is made of rubber, vulcanized to the internal metal structure. It is anchored to the slab by chemical anchors so that movement is achieved by deformation of the rubber parts for the TW60/130 and by sliding of the components for the other types.
Accessories available: plastic caps and centering rings for fixings; drain tubes, flashings.
Longitudinal movement absorption:
- 50 mm (± 25 mm) to 100 mm (± 50 mm) in service condition, 50 mm to 150 mm in seismic condition.
Vertical movement absorption:
- 40 mm for TW60/130 model, 50 mm for other models.
Longitudinal movement absorption:
- 50 mm (± 25 mm) to 100 mm (± 50 mm) in service condition, 50 mm to 150 mm in seismic condition.
Vertical movement absorption:
- 40 mm for TW60/130 model, 50 mm for other models.
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Longitudinal movement absorption
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Vertical movement absorption
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Watertightness
Sub-ballast joint
This joint is designed for medium expansion length railway structures (60 to 100m), where the variation of the space between the deck and the abutments is such that the ballast layer must not be interrupted.
It consists of
It consists of
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(1) a metal cover fixed to the deck
(2) a metal part called a "knife" on which the cover slides
(3) a metal plate fixed to the back wall which holds the knife.
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Longitudinal movement absorption: 0 to 150mm
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Vertical movement absorption: from -10mm to +10mm
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Jacking of the structure without dismantling
Ballast retaining joint
Designed for large expansion length railway structures, where the variation of the space between the deck and the abutments is such that the ballast layer must be interrupted.
It includes
Longitudinal movement absorption: from 0mm up to 900 mm.
Vertical movement absorption: from -50mm to +50mm.
It includes
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(1) a metal angle with a sequence of stiffeners, fixed on either side of the joint
(2) an adjustable vertical plate, according to the profile of the ballast
(3) an elastomeric joint cover to prevent ballast from entering the joint
(4) a chain of metal springs supporting the joint cover
(5) pre-stressed anchors nailing the angles to the structure.
Longitudinal movement absorption: from 0mm up to 900 mm.
Vertical movement absorption: from -50mm to +50mm.
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Railway bridges with expansion > 150m
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Prevents ballast from entering the joint gap
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Setting possibilities: 200mm in height,
100mm longitudinally
T-joint
The T-joint is a supported joint for gaps < 150mm and stroke of +/-20mm.
It consists of a steel plate in contact with the deck on one side and the bridge abutment on the other side with a perpendicular (T-shaped) welding plate. The plate can also be equipped with expansion anchors.
It is installed at a fixed point on the deck, with a length appropriate to the gap to be bridged.
-
Long design life, robustness
-
Various corrosion protection options
-
Easy to install, maintenance free
TW joint (3 types)
The TW joint, used as a sub-ballast joint, is made of rubber, vulcanized to the internal metal structure. It is anchored to the slab by chemical anchors so that movement is achieved by deformation of the rubber parts for the TW60/130 and by sliding of the components for the other types.
Accessories available: plastic caps and centering rings for fixings; drain tubes, flashings.
Longitudinal movement absorption:
- 50 mm (± 25 mm) to 100 mm (± 50 mm) in service condition, 50 mm to 150 mm in seismic condition.
Vertical movement absorption:
- 40 mm for TW60/130 model, 50 mm for other models.
Longitudinal movement absorption:
- 50 mm (± 25 mm) to 100 mm (± 50 mm) in service condition, 50 mm to 150 mm in seismic condition.
Vertical movement absorption:
- 40 mm for TW60/130 model, 50 mm for other models.
-
Longitudinal movement absorption
-
Vertical movement absorption
-
Watertightness
Sub-ballast joint
This joint is designed for medium expansion length railway structures (60 to 100m), where the variation of the space between the deck and the abutments is such that the ballast layer must not be interrupted.
It consists of
It consists of
-
(1) a metal cover fixed to the deck
(2) a metal part called a "knife" on which the cover slides
(3) a metal plate fixed to the back wall which holds the knife.
-
Longitudinal movement absorption: 0 to 150mm
-
Vertical movement absorption: from -10mm to +10mm
-
Jacking of the structure without dismantling
Ballast retaining joint
Designed for large expansion length railway structures, where the variation of the space between the deck and the abutments is such that the ballast layer must be interrupted.
It includes
Longitudinal movement absorption: from 0mm up to 900 mm.
Vertical movement absorption: from -50mm to +50mm.
It includes
-
(1) a metal angle with a sequence of stiffeners, fixed on either side of the joint
(2) an adjustable vertical plate, according to the profile of the ballast
(3) an elastomeric joint cover to prevent ballast from entering the joint
(4) a chain of metal springs supporting the joint cover
(5) pre-stressed anchors nailing the angles to the structure.
Longitudinal movement absorption: from 0mm up to 900 mm.
Vertical movement absorption: from -50mm to +50mm.
-
Railway bridges with expansion > 150m
-
Prevents ballast from entering the joint gap
-
Setting possibilities: 200mm in height,
100mm longitudinally
Other type of expansion joints
Road expansion joints
Expansion joints for road bridges ensure the continuity of the road surface and its load bearing capacity while guaranteeing the freedom of movement of the structure.
As a specialist in structures and bridges, we give top priority to the robustness of our joints.
Expansion joints
Freyssinet has been installing expansion joints all over the world for more than 50 years, on road and railway bridge decks as well as buildings. As a specialist, Freyssinet offers a full range of proven solutions. We propose thorough inspections and designs to determine the correct type of joint for your structure, followed by an expert installation and qualified maintenance services.
Contact us
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