Mesh division device for void detection of steel shell concrete
A grid division and concrete technology, applied in the application field of radioisotope technology, can solve the problems of grid size error, low efficiency of manual grid division, detection efficiency and accuracy difficult to meet rapid detection, etc., to achieve high test accuracy and avoid effect of influence
Active Publication Date: 2022-03-25
NANJING HYDRAULIC RES INST +1
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Problems solved by technology
However, due to the impact of the structure of typical detection units, the detection grid layout is generally irregular, resulting in low efficiency of manual grid division and prone to grid size errors
[0005] In addition, the scale calculation method is not suitable for large-scale repetitive typical detection unit grid division. In practical applications, there may be thousands of typical detection units in the void detection object of steel shell concrete structure, and the same type of detection The number of units may also be hundreds or even thousands, making it difficult to meet the requirements of on-site rapid detection in terms of detection efficiency and accuracy
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[0028] The present invention will be described in further detail below with reference to the accompanying drawings and specific preferred embodiments.
[0029] The steel shell concrete void detection grid division device of the present application is mainly used for the detection grid division of the typical detection unit 40 in the steel shell concrete.
[0030] A typical inspection unit has embedded parts, and the embedded parts include T-ribs 53 , partitions (not shown in the figure), pouring holes 51 and exhaust holes 52 . Due to the existence of the embedded parts, the background water content in the typical detection unit becomes uneven. In order to avoid the influence of the embedded parts on the thermal neutron detector test, when dividing the grid lines, try to make the embedded parts as small as possible. It is located under the grid line, not in the middle of the detection grid, that is, the grid line division is unevenly divided.
[0031] like figure 1 As shown, ...
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The invention discloses a grid division device for void detection of steel shell concrete, which comprises a frame, pillars and grid lines; the frame includes two horizontal bars and two vertical bars; the horizontal bars and the vertical bars are evenly arranged along their respective length directions There are several line penetrations; four pillars are placed at the four top corners of a typical detection unit; the height of each pillar is not lower than the maximum exposed height of both pouring holes and vent holes; grid lines Including horizontal and vertical lines perpendicular to each other, the distance between two adjacent horizontal and vertical lines can be adjusted; the pouring hole is located directly below the intersection point, and the T rib is located directly below the horizontal or longitudinal lines. According to the size of the typical detection unit, the application can stretch and adjust the size of the stainless steel frame to meet the requirements of the plane length and width of the detection unit; according to the characteristics of the typical detection unit structure, the S-shaped traversal mode with vertical and horizontal dimensions can be selected to complete the empty detection object. Flexible assembly of various detection grids with different typical detection units.
Description
technical field [0001] The invention relates to the application field of radioisotope technology, in particular to a grid dividing device for detecting voids in steel shell concrete. Background technique [0002] For some steel shell-concrete structures such as large-scale water conservancy and hydropower, submarine tunnels, bridges, and construction projects, there are often void defects between the concrete and the steel plate lining during the pouring construction process, which affects the safety and durability of the structure. . [0003] The applicant applied for an invention patent application with the application number CN109342463A on November 29, 2018. The name of its invention is "a steel shell-concrete void detection device", which cleverly utilizes the content of hydrogen atoms in concrete to determine fast According to the principle of neutron moderation and deceleration, the metal standard plate and the organic material standard plate are clamped and stacked ...
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IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 刘国庆范子武陈伟乐宋神友吴时强赵洪波金文良夏丰勇顾昊孟令超王琅琅程和森
Owner NANJING HYDRAULIC RES INST