Seismic restrainer systems for bridges & viaducts
Shear key and hold down bars are a special application of Post-Tensioning smooth bar systems where a full assembly acts as a permanent seismic restrainer for the connection of elevated metro/roads precast segments. The core accessories of the system are:
- High tensile bar with threaded ends.
- Swivel nuts.
- Swivel plates.
- Corrosion protection accessories.
Dextra can also provide the jacking service, consult us for more information.
Product Features
- High ductility, fatigue resistance, impact resistance.
- Full traceability and individual bar labelling.
- Ready-to-install conditions: delivered as pre-assembled sets with factory-injected grease in HDPE duct.
- Sea-worthy packing.
- Project engineering support by Dextra dedicated Bar Systems Engineering team.
Full system
Dextra provides a full comprehensive system including rod, plane and nuts.
Clean solution
No grouting, no chemical. Only high-pressure water is required to expand the tube.
Instant support
Once expanded, the tube provides its full support, letting you continue the excavation right away.
Related Projects
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Expertise
At every moment of your customer journey, Dextra teams dedicate themselves to the production of smart construction solutions that allow our customers to reach higher productivity and safety levels on their construction sites.
Dextra holds physical stocks on several continents, complemented in each country by the local inventories of our distributors. With this extended network, Dextra makes sure our products are always at reach no matter where our partners are.
For solutions that require to be customized, Dextra can also go beyond our standard delivery times and offer accelerated delivery schemes. Consult us for more information.
From 3 major industrial sites located in Bangkok (Thailand), Guangzhou (China), and Pune (India), Dextra completely owns its manufacturing facilities and processes. This allows us to have complete control over the timing of our operations and the quality of the solutions produced.
An independently accredited material testing laboratory, accredited to ISO-IEC17025, is located at Dextra’s main Bangkok factory, allowing the testing of material and products.
Dextra aims to supply products that exceed the most demanding international technical approvals and it is our goal to create maximum customer satisfaction by complying with our clients’ needs and specified requirements.