Damage diagnosis equipment for truss structure

Abstract

The invention discloses damage diagnosis equipment for truss structure, which comprises wireless strain sensors, a wireless data acquisition instrument and a rod damage state diagnostor, wherein the wireless strain sensors are mounted at the middle parts of rods; the wireless data acquisition instrument can regularly acquire strain values of the rods under the same dynamic conditions of the truss structure and transmit the strain values to the rod damage state diagnostor; and the rod damage state diagnostor comprises a strain variance ratio module, a comparison and diagnosis output module and a voltage-stabilizing module. According to the method disclosed by the invention, only the one set of wireless data acquisition instrument and the plurality of wireless strain sensors are required, the operation is easy to implement, micro damage can be detected, and long-term monitoring of normal operation state of the truss structure is realized. The technical scheme provided by the invention is simple in structure, low in cost, easy to operate and implement, can detect the micro damage, and can monitor the normal operation state of the truss structure for a long term.

Description

technical field [0001] The invention belongs to the field of structure damage diagnosis of the civil engineering discipline, and relates to a truss structure damage diagnosis device. Background technique [0002] Truss structures are widely used in many industrial and civil buildings, such as space roof trusses, tower cranes, transmission towers, truss bridges, etc. Due to the increase in service life and the influence of environmental corrosion and disaster loads, the truss structure will inevitably be damaged. It is necessary to make timely and accurate diagnosis of the damage in the structure in order to facilitate maintenance and reinforcement to avoid catastrophic consequences. [0003] Most of the traditional damage diagnosis methods or devices use visible local experimental methods, such as ultrasonic methods, magnetic field methods, temperature field methods, and various devices using these methods. However, the above method or device has the following defects: firs...

AI Technical Summary

Problems solved by technology

However, the above method or device has the following defects: first, it is required to know the location of the damage in advance, and second, it is required that the equipment at the detected part can be reached, so the predictability is poor, the workload is high and the cost is high, and it is not suitable for large civil engineering structures. injury diagnosis

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