Bridge & Structural Post-Tensioning Solution
Applications
1. Cast-in-Situ Box Girders
Post-tensioning applied longitudinally and transversely in cast-in-place concrete box girders for highways, urban viaducts, and overpass bridges — creating a monolithic, continuous structure.
2. Precast Segmental Box Girders
Precast segments manufactured off-site and delivered to the project, then assembled and post-tensioned together on-site — ideal for tight schedules or restricted site access.
3. Continuous Rigid-Frame Bridges
Long-span rigid-frame bridges built using cantilever casting combined with post-tensioning, with each segment tensioned and anchored progressively.
4. Bridge Strengthening & External PT
External post-tensioning for rehabilitating and strengthening existing bridges — increasing load capacity and extending service life without major structural modifications.
5. Curved & Special-Shape Structures
Post-tensioning inherently adaptable to curved alignments, making it the preferred solution for ramps, curved overpasses, and other geometrically complex structures.
Core Product Range
YCW Series Multi-Strand Jacks
Through-hole post-tensioning jacks for all types of multi-strand anchorage systems. High-strength steel, compact structure, short overall length — requires less strand protrusion, saving material and cost.
70B – 200B · 200mm strokeZB Series Electric Oil Pumps
Ultra-high-pressure electric pumps with swashplate axial piston design — the dedicated power units for post-tensioning jacks. Rated up to 50MPa, offering reversible operation and simple controls.
ZB4-500 · ZB4-600Prestressing Anchorage Systems
Complete 4-component anchor sets (anchor plate, wedges, bearing plate, spiral reinforcement) — manufactured to GB/T 14370 national standards and compliant with international FIP requirements.
M15 · M13 · M18 · M22Why Choose XQV’s Post-Tensioning Solution
From jacks and pumps to anchorage systems and grouting equipment — complete product portfolio from one source.
YCW jack and ZB pump combination, with optional intelligent tensioning for accurate and reliable force application.
ISO 9001 certified, manufactured to GB/T 14370 and compliant with international FIP post-tensioning requirements.
Products widely used in railway, highway, and bridge projects — including high-speed rail box girders and expressway bridges.
Annual production capacity of 20 million anchor units and 2,000 sets of equipment — batch orders and fast delivery.
Key Technical Considerations for Bridge Post-Tensioning
| Consideration | Recommendation |
|---|---|
| Tensioning sequence | Follow symmetrical, balanced sequence to avoid eccentric loading and structural distortion |
| Strand elongation | Measure actual elongation vs. calculated — tolerance within ±6% per specification |
| Anchor set loss | Account for wedge draw-in (typically 3–6mm) in tensioning calculations |
| Grouting timing | Grout within 24–48 hours after tensioning to prevent strand corrosion |
| Grout quality | Use high-speed mixer, control water-cement ratio, ensure bubble-free grout |
Liuzhou Xuanqiao Prestressing Force Machinery Co., Ltd.
Address：Block A-10-4, Hebiao Industrial Park, Yufeng District, Liuzhou City, Guangxi
Postal Code：545000
Customer service hotline:
+86 0772-2169908
+86 19101251623（Mr.Kong）
Technical Phone Number：
+86 18775155422 (Mr. Zhou)
whatsapp:+86 19101251623
Fax：+86 0772-2169908
email: info@lzxqv.com
Website：www.xqvglobal.com
Bridge & Structural Post-Tensioning Solution
Applications
1. Cast-in-Situ Box Girders
Post-tensioning applied longitudinally and transversely in cast-in-place concrete box girders for highways, urban viaducts, and overpass bridges — creating a monolithic, continuous structure.
2. Precast Segmental Box Girders
Precast segments manufactured off-site and delivered to the project, then assembled and post-tensioned together on-site — ideal for tight schedules or restricted site access.
3. Continuous Rigid-Frame Bridges
Long-span rigid-frame bridges built using cantilever casting combined with post-tensioning, with each segment tensioned and anchored progressively.
4. Bridge Strengthening & External PT
External post-tensioning for rehabilitating and strengthening existing bridges — increasing load capacity and extending service life without major structural modifications.
5. Curved & Special-Shape Structures
Post-tensioning inherently adaptable to curved alignments, making it the preferred solution for ramps, curved overpasses, and other geometrically complex structures.
Core Product Range
YCW Series Multi-Strand Jacks
Through-hole post-tensioning jacks for all types of multi-strand anchorage systems. High-strength steel, compact structure, short overall length — requires less strand protrusion, saving material and cost.
70B – 200B · 200mm strokeZB Series Electric Oil Pumps
Ultra-high-pressure electric pumps with swashplate axial piston design — the dedicated power units for post-tensioning jacks. Rated up to 50MPa, offering reversible operation and simple controls.
ZB4-500 · ZB4-600Prestressing Anchorage Systems
Complete 4-component anchor sets (anchor plate, wedges, bearing plate, spiral reinforcement) — manufactured to GB/T 14370 national standards and compliant with international FIP requirements.
M15 · M13 · M18 · M22Why Choose XQV’s Post-Tensioning Solution
From jacks and pumps to anchorage systems and grouting equipment — complete product portfolio from one source.
YCW jack and ZB pump combination, with optional intelligent tensioning for accurate and reliable force application.
ISO 9001 certified, manufactured to GB/T 14370 and compliant with international FIP post-tensioning requirements.
Products widely used in railway, highway, and bridge projects — including high-speed rail box girders and expressway bridges.
Annual production capacity of 20 million anchor units and 2,000 sets of equipment — batch orders and fast delivery.
Key Technical Considerations for Bridge Post-Tensioning
| Consideration | Recommendation |
|---|---|
| Tensioning sequence | Follow symmetrical, balanced sequence to avoid eccentric loading and structural distortion |
| Strand elongation | Measure actual elongation vs. calculated — tolerance within ±6% per specification |
| Anchor set loss | Account for wedge draw-in (typically 3–6mm) in tensioning calculations |
| Grouting timing | Grout within 24–48 hours after tensioning to prevent strand corrosion |
| Grout quality | Use high-speed mixer, control water-cement ratio, ensure bubble-free grout |
Liuzhou Xuanqiao Prestressing Force Machinery Co., Ltd.
Address：Block A-10-4, Hebiao Industrial Park, Yufeng District, Liuzhou City, Guangxi
Postal Code：545000
Customer service hotline:
+86 0772-2169908
+86 19101251623（Mr.Kong）
Technical Phone Number：
+86 18775155422 (Mr. Zhou)
whatsapp:+86 19101251623
Fax：+86 0772-2169908
email: info@lzxqv.com
Website：www.xqvglobal.com
