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Steel roof truss damage diagnosis device

A technology of steel roof truss and diagnostic device, which is applied to instruments, scientific instruments, analysis of solids using sonic/ultrasonic/infrasonic waves, etc. Easy-to-use effects

Inactive Publication Date: 2012-08-22
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the existing technology of engineering practice, only a few low-order frequency parameters can be collected, which cannot meet the needs of damage diagnosis of steel roof truss structures in many cases.

Method used

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Embodiment Construction

[0020] The implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 as shown, figure 1 It is a schematic diagram of the additional mass block in the present invention. The additional quality blocks include two identical square iron plates 1 and four identical mounting screws 2. During installation, the two iron plates sandwich the steel roof truss nodes symmetrically and are fixed with four mounting screws. Two iron plates and four mounting screws together form an additional mass. In the present embodiment, the side length of the square iron plate 1 of the additional mass block is 500 mm, and the thickness is 20 mm. Four mounting holes are provided at the four corners of the iron plate, and the mounting holes are threaded holes, all of which are 16 mm in diameter. round hole. The mounting screw 2 is cylindrical, with a length of 500 mm and a diameter of 16 mm. Therefore, the ...

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Abstract

The invention discloses a steel roof truss damage diagnosis device, which comprises a detachable additional mass block, a dynamic data acquisition system and an intelligent processor. The additional mass block can be used for symmetrically and fixedly clamping a steel roof truss joint, the dynamic data acquisition system can be used for measuring low-order inherent frequency information of vibration of a steel roof truss after mass is added, and the intelligent processor is provided with a steel roof truss damage diagnosis program module and can output damage parameters by means of inputting the measured frequency information. By the aid of the technical scheme, the steel roof truss damage diagnosis device has the advantages that operation is convenient, the additional mass block can be reused, the device is simple, implementation cost is low, normal work of the steel roof truss is unaffected, and the like. Sufficient frequency information can be acquired to meet the need of damage diagnosis, and the steel roof truss damage diagnosis device is easy in operation, convenient in carrying and multi-point acquisition and high in detection and diagnosis accuracy.

Description

technical field [0001] The invention belongs to the structural damage diagnosis field of civil engineering discipline, and relates to a steel roof truss damage diagnostic device. Background technique [0002] Steel roof truss structures are widely used in many industrial and civil buildings. Due to the increase in service life and the influence of environmental corrosion and disaster loads, steel roof truss collapse accidents have occurred from time to time, and it is urgent to make a timely diagnosis of the damage to facilitate maintenance and reinforcement to avoid catastrophic consequences. [0003] The traditional damage diagnosis methods are mostly visible local experimental methods, such as ultrasonic methods, magnetic field methods, and temperature field methods. These methods generally require the location of the damage to be known in advance and the equipment to be detected can be reached, so the workload is high and the cost is high, and it is not suitable for dam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/12G01N29/22
Inventor 杨秋伟孙斌祥杨丽君
Owner SHAOXING UNIVERSITY
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