Novel concrete strain gauge

Abstract

The invention provides a novel concrete strain gauge and relates to a stress strain measurement device in a civil structure. The novel concrete strain gauge comprises a shell, a temperature sensor, a strain force sensor and a cable. The shell is internally provided with the temperature sensor and the strain force sensor. The middle part of the shell is provided with the cable which is connected with the temperature sensor and the strain force sensor. According to the novel concrete strain gauge, the temperature sensor is added into a common concrete strain gauge, temperature compensation is facilitated, the accuracy and reliability of monitoring data are raised, and an engineering accident caused by the influence of environmental temperature factors is avoided.

Description

technical field [0001] The invention relates to a stress-strain measuring device inside a civil structure, in particular to a novel concrete strain gauge. Background technique [0002] Concrete strain gauges are generally embedded strain gauges, which are buried in concrete structures such as foundation piles, or tied to steel bars, and are used to measure the strain and stress of concrete and steel bars inside the structure. They are mainly used in bridges, roads, and railways. Stress and strain measurement inside concrete structures such as subways, tunnels, dams, foundation piles, etc., because they are used in different projects, the environment for stress and strain measurement will also be different, which affects the accuracy and reliability of stress and strain monitoring data One of the bigger factors is the temperature of the measurement environment. Different temperatures will make the data measured under the same stress condition deviate greatly, so that people...

AI Technical Summary

Problems solved by technology

[0002] Concrete strain gauges are generally embedded strain gauges, which are buried in concrete structures such as foundation piles, or tied to steel bars, and are used to measure the strain and stress of concrete and steel bars inside the structure. They are mainly used in bridges, roads, and railways. Stress and strain measurement inside concrete structures such as subways, tunnels, dams, foundation piles, etc., because they are used in different projects, the environment for stress and strain measurement will also be different, which affects the accuracy and reliability of stress and strain monitoring data One of the bigger factors is the temperature of the measurement environment. Different temperatures will make the data measured under the same stress condition deviate greatly, so that people cannot accurately obtain the stress-strain data inside the concrete structure, which affects people's understanding of the inside of the concrete structure. The judgment of stress, which leads to the occurrence of engineering accidents and the losses caused are huge

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