Bridge Bearing Bolting Solutions: 99% Load Accuracy for Mega-Infrastructure Projects

The Business & Technical Challenge

· Business Pain Point: During a major cable-stayed bridge construction, ensuring the absolute reliability of high-strength bolts connecting massive deck segments to bearing supports was paramount. Any future failure would be catastrophic and astronomically expensive to repair.
· Technical Challenge: The bolts were exceptionally long and required immense, perfectly even preload to prevent stress concentration. Traditional multi-jackbolt tensioners were slow and could not provide real-time, verifiable load data for quality assurance.
Our Custom-Engineered Solution
Yifex engineered a set of extra-long stroke hydraulic nuts with integrated load verification rings. We supplied a full digital Installation Quality Assurance Pack, including calibrated pump settings and a detailed checklist for each bolt. Our team supported the project with 24/7 remote technical backing throughout the installation phase.
The Measurable Results
· 99% Documented Load Accuracy for every single bolt, providing unparalleled QA records.
· Eliminated Risk of Joint Slippage or Fatigue Failure in the primary structure.
· Streamlined Inspector Approval with clear, data-driven installation reports.
· Project Completed On Schedule, with no delays attributed to the bolting process.
Customer Testimonial
“The safety margin on this project was zero. Yifex’s solution provided the verifiable precision we required. Their remote support was our engineering safety net during round-the-clock operations.”
— Project Director, International Infrastructure Consortium