Prestress member capable of being monitored, prestress loss monitoring method and manufacturing method

Abstract

The invention discloses a prestress member capable of being monitored, a prestress loss monitoring method and a manufacturing method. The prestress member capable of being monitored comprises a prestress member body, long-gauge-distance carbon fiber strain sensing units, an electronic tag unit, a micro circuit board and a prestress member surface output port. Each long-gauge-distance carbon fiberstrain sensing unit arranged on the surface of a prestress reinforcing bar comprises at least one long-gauge-distance carbon fiber strain sensing element distributed on the surface of the reinforcingbar in the axial direction of the reinforcing bar; after parallel connection of the micro circuit board in the prestress member, signals of the long-gauge-distance carbon fiber strain sensing units are obtained from the prestress member surface output port; built-in electronic tags are also used, so that production information, use conditions, directions, positions and other information of the prestress member are conveniently read, the requirements for real-time positioning, tracking and monitoring of the prestress member are met, and therefore intelligent fine management can be achieved in the using process of the prestress member.

Description

technical field [0001] The invention relates to a monitorable prestressed component and a method for monitoring the prestressed loss of the component, which integrates high-durability long-gauge carbon fiber sensing technology and radio frequency (RFID) technology to realize prestressed components in the field of civil engineering from Intelligent and refined management from the production link to the use link. Background technique [0002] Because prestressing technology has the advantages of reducing component size, saving materials, and reducing self-weight, prestressed concrete components have been widely used in many civil engineering projects such as large bridges, roads, and prefabricated buildings. The tension of prestressed components is the main parameter that determines the bending resistance and bearing capacity of components, so the quality management in the process of prestressed components is particularly important. In addition, when prestressed components ar...

AI Technical Summary

Problems solved by technology

However, due to the bending deformation of the component after the prestress is placed, the anchorage and the end of the structure will be offset, thus affecting the measurement accuracy of the pressure sensor

In addition, the external pressure sensor is easily affected by the outside world, such as air humidity, temperature thermal expansion, etc., and the problem of sensor failure or separation from the structure occurs, so it is difficult to meet the requirements of long-term monitoring projects

Images