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Measuring device and measuring method for axial-distribution data of section of rusted steel bar

A measuring device and a technology for axial distribution are applied in the field of measuring devices for the axial distribution data of corroded steel bar sections, which can solve the problems of test cost and threshold increase, and achieve the effects of high detection efficiency, simple test equipment and high detection accuracy.

Active Publication Date: 2014-12-10
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the test results of this invention are very accurate, the testing equipment requires the use of tensile testing machines and computers, which greatly increases the test cost and threshold

Method used

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  • Measuring device and measuring method for axial-distribution data of section of rusted steel bar
  • Measuring device and measuring method for axial-distribution data of section of rusted steel bar
  • Measuring device and measuring method for axial-distribution data of section of rusted steel bar

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Effect test

Embodiment 2

[0076] The difference between implementation example 2 and implementation example 1 is that gears are directly used for transmission. Compared with example 1, chain transmission is directly used. The gear meshing transmission has the characteristics of high transmission efficiency, low noise, and small footprint. However, the direct use of gear meshing transmission has relatively high requirements for lubricity.

[0077] The measuring device of embodiment 3 of the present invention corroded steel bar section axial distribution data is as Figure 4 As shown, Embodiment 3 adopts a two-stage gear reduction mechanism. Compared with Embodiment 2, the second small gear 20 and the second large gear 21 are added, the structure is more compact, the transmission ratio is larger, and the measurement accuracy is higher.

Embodiment 4

[0080] The reduction mechanism of embodiment 4 is a worm gear reducer. Compared with embodiments 1-3, the reduction ratio of the worm gear reducer is large, the volume is small, and it can be self-locking; because the reduction ratio of the worm gear reducer is large, the index The distance between the disc indexing holes or the ratchet teeth can be increased, which is convenient for control and operation during testing.

[0081] The measuring device for the cross-section axial distribution data of corroded steel bars according to the present invention is simple in operation, low in test threshold and cost, high in detection efficiency and high in detection accuracy, and can accurately obtain data on the axial distribution of corroded steel bar cross-sections.

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Abstract

The invention discloses a measuring device and a measuring method for axial-distribution data of a rusted steel bar. The measuring device comprises a weighing instrument, a clamp, a container for containing liquid and a steel bar lifting device, wherein the steel bar lifting device comprises a speed reducing mechanism, a winding drum, a steel wire, an indexing mechanism and the clamp; the winding drum is arranged on an output shaft of the speed reducing mechanism; the steel wire is wound on the winding drum; the lower end of the steel wire is connected with the clamp; and the indexing mechanism is arranged on an input shaft of the speed reducing mechanism. The container is arranged on the weighing instrument, the upper end of the measured steel bar is clamped by the clamp, the steel bar droops vertically, the lower end of the steel bar is inserted into the liquid in the container, and the measured section of the steel bar is positioned above liquid level in the container; when the indexing mechanism rotates by unit scale, the steel bar falls by a displacement interval value, and the corresponding weighing value corresponding to the displacement interval value is obtained from the weighing instrument. The measuring device disclosed by the invention has the advantages that the testing equipment is simple, the detection efficiency is high and the detection accuracy is high.

Description

[technical field] [0001] The invention relates to steel bar corrosion measurement, in particular to a measuring device and method for axial distribution data of corroded steel bar section. [Background technique] [0002] In the field of civil engineering, steel bars and concrete are currently the most widely used building materials in the world. A large number of building structures are made of reinforced concrete. However, due to concrete carbonation and chloride corrosion, steel bars are corroded and the structure is reduced. Therefore, the research on the corrosion of steel bars is a durability problem that needs to be solved urgently in engineering. [0003] The remaining section has a direct influence on its bearing capacity. The parameter currently relevant to the remaining section is the corrosion rate. At present, most of the methods for measuring the corrosion rate of steel bars adopt the method stipulated in "Test Methods for Long-term Performance and Durability ...

Claims

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Application Information

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IPC IPC(8): G01N5/00
Inventor 李大望官晓涛邢锋朱正谋李龙元宋志坚
Owner SHENZHEN UNIV
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