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Juding method for for measuring effictiveness of large size structure surface contour curve roughness coefficient

A technology of roughness coefficient and contour curve, which is applied in the direction of measuring devices, instruments, etc., can solve the problem that the measurement validity of the roughness coefficient of the contour curve of large-scale structural surfaces cannot be judged, so as to achieve maximum implementation value and social and economic benefits, and avoid ineffectiveness workload effect

Inactive Publication Date: 2007-10-10
ZHEJIANG COLLEGE OF CONSTR
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Problems solved by technology

[0003] The task of the present invention is to overcome the shortcomings of the prior art that the measurement effectiveness of the roughness coefficient of the large-scale structural surface profile curve cannot be judged, and consider the irregularity of the peak-valley undulation shape of the large-scale structural surface profile curve and the sampling length and the wavelength of the profile curve undulation shape The relationship between the structure surface roughness coefficient statistical measurement data of a large number of samples is used as the discrimination standard to provide a suitable method for judging the validity of the roughness coefficient measurement of the large-scale structure surface profile curve.

Method used

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  • Juding method for for measuring effictiveness of large size structure surface contour curve roughness coefficient

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Embodiment 1

[0015] Referring to attached drawings 1-2, Fig. 1 shows the surface contour curve of structural surface with regular ups and downs. Taking point A as the reference point, select the contour curves with lengths of 10cm, 20cm, 30cm, 40cm and 50cm respectively, and measure the JRC 10 、JRC 20 、JRC 30 、JRC 40 and JRC 50 18.92, 15.87, 13.22, 12.53, 11.98 respectively, in line with JRC 10 >JRC 30 , and JRC 20 >JRC 40 , JRC 30 >JRC 50 Therefore, it is possible to measure the roughness coefficient of the structural surface with a larger sampling length and analyze the size effect of the roughness coefficient of the large-scale structural surface;

[0016] Fig. 2 is the surface contour curve of the undulating and irregular structural surface. Taking point B as the reference point, the contour curves with lengths of 10cm, 20cm, 30cm, 40cm and 50cm are selected respectively, and the contour curves with lengths of 10cm and 20cm are selected at a single undulating peak Inside, the ...

Embodiment 2

[0018] The research work of the inventor on the measurement of the roughness coefficient of the rock mass structural surface began in 1988. The research shows that the roughness coefficient of the rock mass structural surface has the characteristics of anisotropy, inhomogeneity and size effect. In order to evaluate the anisotropic characteristics of the roughness coefficient of the structural surface of rock mass, directional measurement of the roughness coefficient of the structural surface is required; in order to evaluate the heterogeneity characteristics of the roughness coefficient of the structural surface of the rock mass, it is necessary to carry out statistics Measurement; in order to evaluate the size effect characteristics of the roughness coefficient of the rock mass structural surface, it is necessary to carry out directional statistical measurement of the roughness coefficient of the large-scale structural surface. Due to the limitations of measuring instruments ...

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Abstract

A method for judging measurement effectiveness of outline curve roughness coefficient on large dimension structure surface includes selecting measurement reference point on outline curve of large dimension structure surface, setting the sampling length interval to be 10cm; separately measuring roughness coefficient of JRC10, JRC20, JRC30, JRC40 and JRC50 of structure surface outline curve as per sampling length of 10cm, 20cm, 30cm, 40cm and 50cm; carrying out measurement effectiveness judgment according to measured result and confirming that measurement is effective when JRC10>JRC30 JRC20>JRC40 and JRC30>JRC50 or otherwise confirming that measurement is not effective.

Description

(1) Technical field [0001] The invention relates to a method for judging the validity of measuring the roughness coefficient of a large-scale structural surface contour curve, which is suitable for judging whether the measurement result is valid when measuring the roughness coefficient on the large-scale structural surface contour curve. (2) Background technology [0002] Before the present invention is made, there is no method for judging the validity of measuring the roughness coefficient of the contour curve of the large-scale structural surface. Due to the irregularity of the peak and valley fluctuations of the contour curve of the large-scale structural surface, when measuring the roughness coefficient of the structural surface with different sampling lengths from a certain measurement reference point, the measurement result of the roughness coefficient may be contrary to the objective law. That is, the structural surface roughness coefficient of the small sampling leng...

Claims

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Application Information

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IPC IPC(8): G01B21/30
Inventor 杜时贵
Owner ZHEJIANG COLLEGE OF CONSTR
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