Device and method for detecting instability of steel-structure pressing rod

Abstract

The invention provides a device and method for detecting the instability of a steel-structure pressing rod. The device comprises a magnetic shielding outer bracket ring, an inner bracket ring, a retractable magnetic memory detection pen and a power walking mechanism; the inner bracket ring is mounted in the magnetic shielding outer bracket ring; the power walking mechanism is mounted on an outer wall of a rear retaining ring at the rear end of the magnetic shielding outer bracket ring; the retractable magnetic memory detection pen is mounted in the inner bracket ring; the steel-structure pressing rod penetrates through the inner bracket ring; the power walking mechanism can walk on the steel-structure pressing rod; the retractable magnetic memory detection pen is used for detecting the steel-structure pressing rod. The retractable magnetic memory detection pen provided by the invention is provided with two three-dimensional magnetic memory sensors and a distance sensor in total and can realize complete and accurate acquisition of normal and tangential magnetic signals through annular free movement of the device; the detection of rod pieces with various types of sections can be realized, and accurate judgment on the stability of various types of members to be detected is guaranteed.

Description

technical field [0001] The invention belongs to the field of construction engineering, and mainly relates to the detection of a steel structure pressure bar, in particular to a device and method for detecting the instability of a steel structure pressure bar. Background technique [0002] In recent years, steel structures, especially high-rise and long-span steel structures, have been widely used and developed rapidly all over the world. With the improvement of steel smelting level, the strength of steel used in construction has been improved, and the components with smaller cross-sections Higher bearing capacity can be achieved, the components made are relatively slender, the plates that make up the components are wide and thin, and the analysis model and technology of the structure are becoming more and more refined, which makes the steel structure have a larger span, lighter weight and higher rigidity. Softer and more complex in shape. However, the actual structure is ve...

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a device and method for detecting the instability of steel structure compression bars, so as to solve the problem that the detection device in the prior art cannot move freely and cannot detect the axis of multi-section steel structures. The problem of detecting the instability of the compression member

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