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(China) Jiaxing-Shaoxing Sea Bridge Adopts Digital Bolt Monitoring Technology
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2022-03-18
Jiaxing-Shaoxing Sea Bridge is the first in China to use a digital monitoring technology on high-strength hinge bolts. Sixteen bolts on the bridge were selected for real-time monitoring to analyze the load bearing of 1,300 bolts for the safety of the bridge.
The managing director of the bridge said, "It's very crucial for the safety of the bridge to know if these 1,300 bolts are in the safe range. We used to rely on the torque method and angle method conducted by experienced people to inspect and determine the bolts' preload. They knocked on the structure, using sound, tone, state of appearance and other factors to determine if they have to adjust the fastening of the bolts. However, this is a high-cost and low-efficiency manual check that is way below the requirements for building a bridge that will last 100 years."
"A bridge in service is subject to the influence of passing vehicles and wind that causes deviation in the bolts' fastening, and could affect the safety of the bridge in worst-case scenarios." Jiaxing-Shaoxing Sea Bridge was monitored once per year in the past, and now by utilizing digital monitoring, real-time checks can be performed on the bridge to improve data accuracy.
Every move of the monitored 16 bolts are visualized digitally to provide clear and scientific data on bolt fastening and reference to the load bearing of other bolts.
(China) Jiaxing-Shaoxing Sea Bridge
Digital Bolt Monitoring Technology
bolt fastening
浙江嘉紹大橋
數位化螺栓監測技術
2022-03-18
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