Contact Info
- Tel: +86-311-87813582
- Fax: +86-311-87829648
- Email: Kaiwork@126.com
- Whatsapp: +86 86 138 3318 2035
- Add: No.345, Youyi North Street, Shijiazhuang City, Hebei Province, China.
Heavy-Duty Infrastructure Hydraulic Grade. Engineered specifically for large-scale bridge construction, segmental box girders, and heavy civil engineering, our multi-strand post-tensioning hydraulic jack combines massive tonnage capacity with precision center-hole stress distribution, delivering ultimate tensioning reliability, structural safety, and job-site performance for global mega-projects.
Multi-Strand Post-Tensioning Hydraulic Jack | Heavy-Duty Bridge Construction Stressing System
​Designed for simultaneous multi-strand tensioning and heavy structural anchoring under extreme bridge construction conditions. Every hydraulic unit adheres to strict mechanical and pressure benchmarks.
|
Technical Parameter |
Specification Value |
Governing Standard / Design |
|
Available Tonnage Capacities |
650 kN to 10,000 kN (Customizable Multi-Strand Ranges) |
ISO / CE Heavy Hydraulic Standards |
|
Compatible Strand Configurations |
2 to 37 Strands (12.7 mm / 15.24 mm PC Strands) |
ASTM A416 / ISO 6934-4 |
|
Max Working Hydraulic Pressure |
50 MPa to 63 MPa (7,250 to 9,100 psi) |
High-Pressure Heavy-Duty Design |
|
Piston Stroke / Travel |
200 mm to 400 mm (Optimized for Multi-Tendon Pull) |
Precision Stressing Stroke |
|
Operation Type |
Double-Acting Hydraulic Advance & Return |
Synchronized Hydraulic Control |
|
Structure & Portability |
Heavy-Duty Alloy Steel Cylinder with Crane Lifting Lugs |
Rigorous Job-Site Durability |
· ​Massive Multi-Strand Tonnage Range: Engineered to simultaneously tension multi-wire tendon groups, drastically cutting down stressing cycles on large bridge box girders and massive post-tensioned structures.
· ​Precision Center-Hole Design: Ensures symmetrical force distribution around the anchorage head, eliminating eccentric loading and guaranteeing uniform slip-free wedge seating.
· ​Double-Acting Hydraulic Control: Features active hydraulic retraction for both advance and return strokes, allowing fast, effortless resetting even under long hose runs and deep bridge anchor recesses.
· ​Full Hydraulic Traceability & Safety: Equipped with integrated safety over-pressure relief valves, burst-proof heavy-duty cylinders, and certified pressure testing, ensuring absolute security on high-altitude bridge piers.
​Engineered for critical load-bearing structural operations across major bridge and civil infrastructure projects:
· ​Highways & Railway Bridges: Continuous cast-in-place box girders, precast segmental bridges, extradosed bridges, and arch bridge tie-backs.
· ​Specialized Infrastructure: Nuclear containment vessels, large-span industrial roofs, heavy structural marine platforms, and dam stabilization anchors.
· ​Heavy Civil Foundations: Deep foundation anchor testing and massive geotechnical load-bearing structures.
​Q: How many strands can a multi-strand post-tensioning jack accommodate?
A: We offer a comprehensive range of multi-strand jacks designed to accommodate anywhere from 2 strands up to 37 strands (15.24 mm / 0.6" standard), matched precisely to your project's anchor head design.
​Q: What type of hydraulic power pack is required to drive these heavy jacks?
A: These jacks are designed to operate in tandem with our heavy-duty, high-flow electric hydraulic pump stations rated up to 63 MPa, featuring multi-circuit control valves for precise synchronization.
​Q: What is the standard export packaging and transport safety?
A: Each heavy-duty hydraulic jack is securely mounted and sealed inside a reinforced, heavy-duty wooden export crate with dedicated lifting brackets to ensure absolute protection during international ocean or land transit.
