A method for measuring and inspecting the radius of the inner wall of the curved roof of the assembled channel

An inspection method and technology of an arc-shaped top plate are applied in the field of measurement and inspection of fabricated channels, which can solve the problem that the radius cannot be directly measured, and achieve the effect of small amount of measurement data and simple operation and calculation.

Active Publication Date: 2016-08-24
ANHUI TRANSPORTATION INVESTMENT GRP
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The radius of the inner wall of the curved roof of the prefabricated channel is an important section linear parameter, but the radius cannot be directly measured. Therefore, it is necessary to propose a method for measuring and inspecting the radius of the inner wall of the curved roof of the prefabricated channel.

Method used

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  • A method for measuring and inspecting the radius of the inner wall of the curved roof of the assembled channel
  • A method for measuring and inspecting the radius of the inner wall of the curved roof of the assembled channel
  • A method for measuring and inspecting the radius of the inner wall of the curved roof of the assembled channel

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Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1: measured α 1 = α 2 = 45°, L O = 1.400m, L 1 =1.200m, first assume L O ﹥R, put the data into the formula (1), get R=0.9285m, which is in line with the assumption, so R=0.9285m.

Embodiment 2

[0031] Embodiment 2: measured α 1 = α 2 = 60°, L O = 1.000m, L 1 =1.200m, first assume L O ﹥R, put the data into formula (1), get R=1.55m, which does not meet the assumption, so it should be calculated according to formula (2). Substituting the data into the formula (2), obtain R=1.1375m.

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Abstract

The invention relates to an assembly type channel arc top plate inner wall radius measuring and testing method. The assembly type channel arc top plate inner wall radius measuring and testing method includes the following steps of using a total station meter placed on a base plate to aim at a peak point A, a leftmost end point B and a rightmost end point C, measuring an angle alpha<1> formed by an OA link line and an OB link line and an angle alpha<2> formed by the OA link line and an OC link line through a measuring center O of the total station meter, repeatedly adjusting the position of the total station meter on the base plate to enable the angle alpha<1> to equal the angle alpha<2> so that the location of the total station meter on a medial axis of a channel is guaranteed, measuring a distance L<0> between the measuring center O of the total station meter and a point A and a distance L<1> between the measuring center O of the total station meter and a point B, and finally, substituting the measured alpha<1>, the distance L<0> and the distance L<1> into a given equation to obtain an actual top plate inner wall radius value R. The assembly type channel arc top plate inner wall radius measuring and testing method is capable of accurately and conveniently testing whether top plate line types meet original design requirements.

Description

technical field [0001] The invention belongs to the technical field of measurement and inspection of assembled passageways after construction, and in particular relates to a method for measuring and inspecting the radius of the inner wall of the curved top plate of the assembled passageway. Background technique [0002] After the prefabricated channel is installed, it is necessary to measure the line shape of the section to ensure that the line shape is smooth and well stressed. The radius of the inner wall of the curved roof of the prefabricated channel is an important section linear parameter, but the radius cannot be directly measured. Therefore, it is necessary to propose a method for measuring and inspecting the radius of the inner wall of the curved roof of the prefabricated channel. Contents of the invention [0003] The purpose of the present invention is to provide a method for measuring and inspecting the radius of the inner wall of the arc-shaped roof of the ass...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/255
Inventor 陈发根杨晓光胡可郑建中曹光伦左敦礼张其云王宏斌马祖桥王胜斌董阁吴刚席进阮欣潘家升杨牧盘杨新苏陈维平赵可肖唐军孙海鹏
Owner ANHUI TRANSPORTATION INVESTMENT GRP
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