Assembled prestressed carbon fiber plate tensioned anchorage system, and anchorage method thereof

Abstract

The invention discloses an assembled prestressed carbon fiber plate tensioned anchorage system, and an anchorage method thereof. The assembled prestressed carbon fiber plate tensioned anchorage system comprises a tensioning assembly, a tensioning end anchorage device, two anchorage plates and a fixing end anchorage device, wherein the two ends of a carbon fiber plate are respectively fixed on a to-be-strengthened steel girder through the tensioning end anchorage device and the fixing end anchorage device, the anchorage plates are coated on the carbon fiber plate and pretensioned together with the steel girder, the tensioning assembly is connected with the tensioning end anchorage device, the carbon fiber plate is pretentioned by applying jacking force to a counter-force frame through the tensioning assembly, and after the tensioning of the carbon fiber plate is completed, the carbon fiber plate is fastened on the steel girder by the anchorage plates through locking pieces. The assembled prestressed carbon fiber plate tensioned anchorage system has the beneficial effects that after strengthening is completed, the anchorage devices and the tensioning assembly can be removed from a steel structure, and only the carbon fiber plate and the anchorage plates on the two ends are left, so that the economy is good. The carbon fiber plate is fit with the surface of the steel structure through a steering block, and adhesion strengthening is formed by utilizing special epoxy glue, thus being beneficial to overall stress of the structure.

Description

[0001] Field [0002] The invention belongs to the technical field of structural reinforcement, is applicable to the reinforcement design and construction of steel structures and steel-concrete composite structures, and relates to an assembled prestressed carbon fiber plate tension anchor system and an anchor method. Background technique [0003] Carbon fiber material is a lightweight structural material with excellent performance. It was first used in the aerospace field and is currently widely used in civil structures. As a reinforcement material, its technical indicators have been developed from non-prestressed reinforcement directly attached to the surface of the structure to prestressed reinforcement with a large amount of reinforcement and high material utilization. According to literature research, the limitation of the existing prestressed carbon fiber reinforcement technology is that it only strengthens concrete structures, and there are very few systematic studies on...

AI Technical Summary

Problems solved by technology

Compared with the carbon fiber plate reinforcement method, the paste steel plate reinforcement method, which is widely used at present, has many disadvantages such as low strength, heavy weight, and easy corrosion.

Images