Prestress FRP and high-strength steel wire rope combined wood beam reinforcing device and method

Abstract

The invention relates to a prestress FRP and high-strength steel wire rope combined wood beam reinforcing device and method. The device comprises FRP cloth pasted to the bottom face of a log beam in the length direction, a middle supporting piece is installed in the middle of the log beam, end reinforcing anchoring pieces are installed at the two ends of the log beam correspondingly, a plurality of layers of FRP hoops are pasted on the log beam and located between the middle supporting piece and the end part reinforcing anchoring pieces at intervals in the length direction, and high-strength steel wire ropes with the two ends connected to the corresponding end part reinforcing anchoring pieces are arranged on the two sides of the middle supporting piece correspondingly. The device and themethod overcome the defects of rigidity, bearing capacity and the like of flexural members such as wood beams in actual engineering, and meanwhile, through combined use of a prestress steel wire ropeand the FRP cloth, the safety reserve is improved, two defense lines are provided for the damaged wood beams, and the ductility is improved.

Description

technical field [0001] The invention relates to a device and method for reinforcing wooden beams combined with prestressed FRP and high-strength steel wire ropes. Background technique [0002] In order to respond to the general requirements of industrial prosperity, ecological livability, rural civilization, effective governance, and affluent life put forward by the rural revitalization strategy, to promote rural economic development and build beautiful villages, we must carry out necessary maintenance and reinforcement of traditional residential buildings. [0003] For traditional residential buildings, the main structural system is a wood frame load-bearing structure system, and the load-bearing materials used are basically wood; wood is a natural and naturally degradable green organic material (this is also its advantage as a healthy and environmentally friendly natural material. ), easy to be corroded by microorganisms such as wood rot fungi and termites, etc., causing e...

AI Technical Summary

Problems solved by technology

For the relatively new type of FRP reinforcement, it is a passive reinforcement method that needs to be deformed to a certain extent to play a role, and often does not increase the stiffness of the component much. Although the utilization rate and stiffness of the material performance can be improved by applying prestress, But the process is often complicated, especially for members with similar circular cross-sections

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