In the early years of the founding of the bridge construction project, with the improvement of the standards of today's society, the problems of the past bridge projects have become more and more prominent due to the backward technology, including improper construction, unreasonable design, insufficient load capacity, and aging corrosion. And the initial design function can not meet the current needs and other issues are obvious. Some of the old projects have been demolished and rebuilt, and some have been reinforced by historical significance and bridge projects that still have value in use.
In the bridge reinforcement projects, the application of prestressed building carbon fiber board technology is more popular. The bridge engineering of high-strength performance of carbon fiber board is used to improve the contradiction between the old bridge projects and the needs of today's society, and to increase its use value and reduce the pressure on the government's social engineering construction.
The prestressed building carbon fiber board technology reinforces the bearing capacity of the bridge projects. The operation method is convenient and simple, and the cost is low. No large-scale and high-strength operation is required. The following steps can be completed:
1. Preparation for tensioning: Do a good job of division of labor, prepare equipment (tensioning tools and anchoring devices, etc.) and cut carbon fiber sheets.
2. Measurement lofting: research good design drawings, and do the appropriate construction plan according to the plan construction.
3. Planting bars work: planting tendons (select reasonable planting methods according to different situations, pay attention to selecting the anti-humid heat aging certified planting bar adhesive), install anchors and tensioning tools, and cut the carbon fiber board in place.
4. Carbon fiber sheet tensioning: Graded loading of carbon fiber board, reasonable design of loading force to tension and control stress ratio.
5. Fix the tensioned carbon fiber board, according to the preliminary construction design plan.
6. After the tension is completed, the carbon plate protective layer of carbon fiber sheet is produced.
7. The anchor bolts are coated with adhesive, and after the metal parts are rust-proofed, the tensioned ends and the fixed end anchors are placed.
(Mankate prestressed carbon fiber board is used to reinforce the construction of a large bridge in Northeast China)
The above is a brief description of the operation of bridge reinforcement using prestressed building carbon fiber board technology. Prestressed reinforcement carbon fiber technology is one of the better options for strengthening projects such as bridges, buildings, subways, tunnel high-speed rails, chimneys and wharfs due to simple operation and low difficulty.
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(Editor: Nanjing Mankate, if you need to reprint, please indicate the source)
