Carbon fiber composite rod used on intelligent steel strand and preparation method

Abstract

The invention discloses a carbon fiber composite rod used on intelligent steel strand and a preparation method. The carbon fiber composite rod comprises an optical fiber, and composite carbon fibers are arranged outside the optical fiber. The composite carbon fibers are composed of a plurality of carbon fiber bundles attached with resins and additives. The preparation method comprises steps: firstly, the carbon fiber bundles and the optical fiber are placed respectively; secondly, the carbon fiber bundles and the optical fiber are dragged respectively to go through a synthesis device; thirdly, power-on is carried out, and the device is heated; fourthly, the carbon fiber bundles and the optical fiber are dragged to move. The beneficial effects are that the carbon fiber composite rod has good tensile strength and flexibility and replaces a core cable of a pre-stress steel strand; a light time domain reflectometer is connected, the stress state of the pre-stress steel strand can be monitored in real time, real-time measurement of the pre-stress steel strand is achieved, and the usage safety of the pre-stress steel strand is raised; the carbon fiber composite rod is helpful to achieve real-time monitoring and intelligent management of a whole bridge or building.

Description

technical field [0001] The invention relates to a carbon fiber composite rod, in particular to a carbon fiber composite rod used on an intelligent steel strand and a preparation method thereof. Background technique [0002] In bridge and railway foundation components, steel strands are widely used as the carrier of concrete components. Each steel strand is composed of multiple steel wires twisted, and each steel strand is in tension during use. The existing technology cannot monitor the change of the tensile stress of each steel strand during use. When one of the steel strands has an installation error or a sudden large stress state, so that its working tensile stress exceeds its yield stress, the steel strand The stranded wire will be in the state of yield and tension. When the deformation value exceeds the limit, the maximum bearing stress of the steel stranded wire will decrease sharply and breakage will occur. Since one of the steel strands loses its working ability, t...

AI Technical Summary

Problems solved by technology

The existing technology cannot monitor the change of the tensile stress of each steel strand during use. When one of the steel strands has an installation error or a sudden large stress state, so that its working tensile stress exceeds its yield stress, the steel strand The stranded wire will be in a state of yield and tension. When the deformation value exceeds the limit, the maximum bearing stress of this steel strand will decrease sharply and breakage will occur.

As one of the steel strands loses its working ability, the working stress of the other steel strands increases, which greatly increases the risk of the overall steel strand breaking and endangers the safety of the entire bridge, roadbed and other buildings.

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