A cable meter protection device for monitoring the tensile stress of prestressed steel bars

Abstract

The invention discloses a wire rope extensometer protective device for monitoring tension stress of prestressed reinforcement. Blocks are arranged at two ends of a columnar hollow tube body of the wire rope extensometer protective device for the monitoring tension stress of the prestressed reinforcement, thru holes are further formed in the blocks, helical reinforcement and helical mechanical nicks are arranged on the outer surface of the tube body to enhance anchoring of the tube body and concrete. By means of the wire rope extensometer protective device for the monitoring tension stress of the prestressed reinforcement, the key technical problem of monitoring the tension stress of the prestressed reinforcement inside a prestressed concrete member with a vibration wire type wire rope extensometer is solved, the use of the vibration wire type wire rope extensometer enables monitoring data to have the advantages of being stable and reliable, and thus long-term monitoring is guaranteed. The wire rope extensometer protective device for the monitoring tension stress of the prestressed reinforcement is small in size, low in weight and high in strength and stiffness, the wire rope extensometer protective device, thus a protective effect to a sensor is achieved, thus the wire rope extensometer can stretch freely and move in a small range inside the concrete member, thus monitoring to the tension stress of the prestressed reinforcement is achieved, and entire stress performance of a structure is influenced lightly.

Description

technical field [0001] The invention relates to a protection device for a wire gauge, in particular to a wire gauge protection device for monitoring the tensile stress of prestressed steel bars. Background technique [0002] Prestressed concrete structure is a very important structural form in civil engineering. The application of prestressed concrete covers various aspects in the field of civil engineering, such as large public buildings, long-span bridge structures and large water conservancy and power facilities. These buildings occupy an important position in the country's economic production. If there are structural problems during service, it may cause engineering accidents and cause adverse social impacts. Therefore, it is particularly necessary to carry out corresponding health monitoring work during the construction and service phases of important prestressed concrete structures. [0003] Structural health monitoring technology has become a hot spot in the field o...

AI Technical Summary

Problems solved by technology

After the concrete sets and hardens, it will limit the expansion and contraction of the cable gauge, thus making it useless

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